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1383 lines
79 KiB
Markdown
1383 lines
79 KiB
Markdown
# MinIO Bucket Notification Guide [](https://slack.min.io)
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Events occurring on objects in a bucket can be monitored using bucket event notifications. Event types supported by MinIO server are
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| Supported Event Types | | |
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| :---------------------- | ------------------------------------------ | ------------------------ |
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| `s3:ObjectCreated:Put` | `s3:ObjectCreated:CompleteMultipartUpload` | `s3:ObjectAccessed:Head` |
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| `s3:ObjectCreated:Post` | `s3:ObjectRemoved:Delete` | |
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| `s3:ObjectCreated:Copy` | `s3:ObjectAccessed:Get` | |
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Use client tools like `mc` to set and listen for event notifications using the [`event` sub-command](https://docs.min.io/docs/minio-client-complete-guide#events). MinIO SDK's [`BucketNotification` APIs](https://docs.min.io/docs/golang-client-api-reference#SetBucketNotification) can also be used. The notification message MinIO sends to publish an event is a JSON message with the following [structure](https://docs.aws.amazon.com/AmazonS3/latest/dev/notification-content-structure.html).
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Bucket events can be published to the following targets:
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| Supported Notification Targets | | |
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| :-------------------------------- | --------------------------- | ------------------------------- |
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| [`AMQP`](#AMQP) | [`Redis`](#Redis) | [`MySQL`](#MySQL) |
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| [`MQTT`](#MQTT) | [`NATS`](#NATS) | [`Apache Kafka`](#apache-kafka) |
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| [`Elasticsearch`](#Elasticsearch) | [`PostgreSQL`](#PostgreSQL) | [`Webhooks`](#webhooks) |
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| [`NSQ`](#NSQ) | | |
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## Prerequisites
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- Install and configure MinIO Server from [here](https://docs.min.io/docs/minio-quickstart-guide).
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- Install and configure MinIO Client from [here](https://docs.min.io/docs/minio-client-quickstart-guide).
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```
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$ mc admin config get myminio | grep notify
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notify_webhook publish bucket notifications to webhook endpoints
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notify_amqp publish bucket notifications to AMQP endpoints
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notify_kafka publish bucket notifications to Kafka endpoints
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notify_mqtt publish bucket notifications to MQTT endpoints
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notify_nats publish bucket notifications to NATS endpoints
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notify_nsq publish bucket notifications to NSQ endpoints
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notify_mysql publish bucket notifications to MySQL databases
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notify_postgres publish bucket notifications to Postgres databases
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notify_elasticsearch publish bucket notifications to Elasticsearch endpoints
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notify_redis publish bucket notifications to Redis datastores
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```
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> NOTE: '*' at the end of arg means its mandatory, '*' at the end of the values, means its the default value for the arg.
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<a name="AMQP"></a>
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## Publish MinIO events via AMQP
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Install RabbitMQ from [here](https://www.rabbitmq.com/).
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### Step 1: Add AMQP endpoint to MinIO
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The AMQP configuration is located under the sub-system `notify_amqp` top-level key. Create a configuration key-value pair here for your AMQP instance. The key is a name for your AMQP endpoint, and the value is a collection of key-value parameters described in the table below.
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```
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KEY:
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notify_amqp[:name] publish bucket notifications to AMQP endpoints
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ARGS:
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url* (url) AMQP server endpoint e.g. `amqp://myuser:mypassword@localhost:5672`
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exchange (string) name of the AMQP exchange
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exchange_type (string) AMQP exchange type
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routing_key (string) routing key for publishing
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mandatory (on|off) quietly ignore undelivered messages when set to 'off', default is 'on'
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durable (on|off) persist queue across broker restarts when set to 'on', default is 'off'
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no_wait (on|off) non-blocking message delivery when set to 'on', default is 'off'
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internal (on|off) set to 'on' for exchange to be not used directly by publishers, but only when bound to other exchanges
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auto_deleted (on|off) auto delete queue when set to 'on', when there are no consumers
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delivery_mode (number) set to '1' for non-persistent or '2' for persistent queue
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queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
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queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
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comment (sentence) optionally add a comment to this setting
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```
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Or environment variables
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```
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KEY:
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notify_amqp[:name] publish bucket notifications to AMQP endpoints
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ARGS:
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MINIO_NOTIFY_AMQP_ENABLE* (on|off) enable notify_amqp target, default is 'off'
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MINIO_NOTIFY_AMQP_URL* (url) AMQP server endpoint e.g. `amqp://myuser:mypassword@localhost:5672`
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MINIO_NOTIFY_AMQP_EXCHANGE (string) name of the AMQP exchange
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MINIO_NOTIFY_AMQP_EXCHANGE_TYPE (string) AMQP exchange type
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MINIO_NOTIFY_AMQP_ROUTING_KEY (string) routing key for publishing
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MINIO_NOTIFY_AMQP_MANDATORY (on|off) quietly ignore undelivered messages when set to 'off', default is 'on'
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MINIO_NOTIFY_AMQP_DURABLE (on|off) persist queue across broker restarts when set to 'on', default is 'off'
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MINIO_NOTIFY_AMQP_NO_WAIT (on|off) non-blocking message delivery when set to 'on', default is 'off'
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MINIO_NOTIFY_AMQP_INTERNAL (on|off) set to 'on' for exchange to be not used directly by publishers, but only when bound to other exchanges
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MINIO_NOTIFY_AMQP_AUTO_DELETED (on|off) auto delete queue when set to 'on', when there are no consumers
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MINIO_NOTIFY_AMQP_DELIVERY_MODE (number) set to '1' for non-persistent or '2' for persistent queue
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MINIO_NOTIFY_AMQP_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
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MINIO_NOTIFY_AMQP_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
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MINIO_NOTIFY_AMQP_COMMENT (sentence) optionally add a comment to this setting
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```
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MinIO supports persistent event store. The persistent store will backup events when the AMQP broker goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
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To update the configuration, use `mc admin config get notify_amqp` command to get the current configuration for `notify_amqp`.
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```sh
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$ mc admin config get myminio/ notify_amqp
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notify_amqp:1 delivery_mode="0" exchange_type="" no_wait="off" queue_dir="" queue_limit="0" url="" auto_deleted="off" durable="off" exchange="" internal="off" mandatory="off" routing_key=""
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```
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Use `mc admin config set` command to update the configuration for the deployment.Restart the MinIO server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::1:amqp` at start-up if there were no errors.
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An example configuration for RabbitMQ is shown below:
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```sh
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$ mc admin config set myminio/ notify_amqp:1 exchange="bucketevents" exchange_type="fanout" mandatory="false" no_wait="false" url="amqp://myuser:mypassword@localhost:5672" auto_deleted="false" delivery_mode="0" durable="false" internal="false" routing_key="bucketlogs"
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```
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MinIO supports all the exchanges available in [RabbitMQ](https://www.rabbitmq.com/). For this setup, we are using `fanout` exchange.
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Note that, you can add as many AMQP server endpoint configurations as needed by providing an identifier (like "1" in the example above) for the AMQP instance and an object of per-server configuration parameters.
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### Step 2: Enable bucket notification using MinIO client
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We will enable bucket event notification to trigger whenever a JPEG image is uploaded or deleted `images` bucket on `myminio` server. Here ARN value is `arn:minio:sqs::1:amqp`. To understand more about ARN please follow [AWS ARN](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) documentation.
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```
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mc mb myminio/images
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mc event add myminio/images arn:minio:sqs::1:amqp --suffix .jpg
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mc event list myminio/images
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arn:minio:sqs::1:amqp s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
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```
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### Step 3: Test on RabbitMQ
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The python program below waits on the queue exchange `bucketevents` and prints event notifications on the console. We use [Pika Python Client](https://www.rabbitmq.com/tutorials/tutorial-three-python.html) library to do this.
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```py
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#!/usr/bin/env python
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import pika
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connection = pika.BlockingConnection(pika.ConnectionParameters(
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host='localhost'))
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channel = connection.channel()
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channel.exchange_declare(exchange='bucketevents',
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exchange_type='fanout')
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result = channel.queue_declare(exclusive=False)
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queue_name = result.method.queue
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channel.queue_bind(exchange='bucketevents',
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queue=queue_name)
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print(' [*] Waiting for logs. To exit press CTRL+C')
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def callback(ch, method, properties, body):
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print(" [x] %r" % body)
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channel.basic_consume(callback,
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queue=queue_name,
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no_ack=False)
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channel.start_consuming()
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```
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Execute this example python program to watch for RabbitMQ events on the console.
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```py
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python rabbit.py
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```
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Open another terminal and upload a JPEG image into `images` bucket.
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```
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mc cp myphoto.jpg myminio/images
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```
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You should receive the following event notification via RabbitMQ once the upload completes.
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```py
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python rabbit.py
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'{"Records":[{"eventVersion":"2.0","eventSource":"aws:s3","awsRegion":"","eventTime":"2016–09–08T22:34:38.226Z","eventName":"s3:ObjectCreated:Put","userIdentity":{"principalId":"minio"},"requestParameters":{"sourceIPAddress":"10.1.10.150:44576"},"responseElements":{},"s3":{"s3SchemaVersion":"1.0","configurationId":"Config","bucket":{"name":"images","ownerIdentity":{"principalId":"minio"},"arn":"arn:aws:s3:::images"},"object":{"key":"myphoto.jpg","size":200436,"sequencer":"147279EAF9F40933"}}}],"level":"info","msg":"","time":"2016–09–08T15:34:38–07:00"}'
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```
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<a name="MQTT"></a>
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## Publish MinIO events MQTT
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Install an MQTT Broker from [here](https://mosquitto.org/).
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### Step 1: Add MQTT endpoint to MinIO
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The MQTT configuration is located as `notify_mqtt` key. Create a configuration key-value pair here for your MQTT instance. The key is a name for your MQTT endpoint, and the value is a collection of key-value parameters described in the table below.
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```
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KEY:
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notify_mqtt[:name] publish bucket notifications to MQTT endpoints
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ARGS:
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broker* (uri) MQTT server endpoint e.g. `tcp://localhost:1883`
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topic* (string) name of the MQTT topic to publish
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username (string) MQTT username
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password (string) MQTT password
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qos (number) set the quality of service priority, defaults to '0'
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keep_alive_interval (duration) keep-alive interval for MQTT connections in s,m,h,d
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reconnect_interval (duration) reconnect interval for MQTT connections in s,m,h,d
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queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
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queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
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comment (sentence) optionally add a comment to this setting
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```
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or environment variables
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```
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KEY:
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notify_mqtt[:name] publish bucket notifications to MQTT endpoints
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ARGS:
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MINIO_NOTIFY_MQTT_ENABLE* (on|off) enable notify_mqtt target, default is 'off'
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MINIO_NOTIFY_MQTT_BROKER* (uri) MQTT server endpoint e.g. `tcp://localhost:1883`
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MINIO_NOTIFY_MQTT_TOPIC* (string) name of the MQTT topic to publish
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MINIO_NOTIFY_MQTT_USERNAME (string) MQTT username
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MINIO_NOTIFY_MQTT_PASSWORD (string) MQTT password
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MINIO_NOTIFY_MQTT_QOS (number) set the quality of service priority, defaults to '0'
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MINIO_NOTIFY_MQTT_KEEP_ALIVE_INTERVAL (duration) keep-alive interval for MQTT connections in s,m,h,d
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MINIO_NOTIFY_MQTT_RECONNECT_INTERVAL (duration) reconnect interval for MQTT connections in s,m,h,d
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MINIO_NOTIFY_MQTT_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
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MINIO_NOTIFY_MQTT_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
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MINIO_NOTIFY_MQTT_COMMENT (sentence) optionally add a comment to this setting
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```
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MinIO supports persistent event store. The persistent store will backup events when the MQTT broker goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
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To update the configuration, use `mc admin config get` command to get the current configuration.
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```sh
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$ mc admin config get myminio/ notify_mqtt
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notify_mqtt:1 broker="" password="" queue_dir="" queue_limit="0" reconnect_interval="0s" keep_alive_interval="0s" qos="0" topic="" username=""
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```
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Use `mc admin config set` command to update the configuration for the deployment. Restart the MinIO server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::1:mqtt` at start-up if there were no errors.
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```sh
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$ mc admin config set myminio notify_mqtt:1 broker="tcp://localhost:1883" password="" queue_dir="" queue_limit="0" reconnect_interval="0s" keep_alive_interval="0s" qos="1" topic="minio" username=""
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```
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MinIO supports any MQTT server that supports MQTT 3.1 or 3.1.1 and can connect to them over TCP, TLS, or a Websocket connection using `tcp://`, `tls://`, or `ws://` respectively as the scheme for the broker url. See the [Go Client](http://www.eclipse.org/paho/clients/golang/) documentation for more information.
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Note that, you can add as many MQTT server endpoint configurations as needed by providing an identifier (like "1" in the example above) for the MQTT instance and an object of per-server configuration parameters.
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### Step 2: Enable bucket notification using MinIO client
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We will enable bucket event notification to trigger whenever a JPEG image is uploaded or deleted `images` bucket on `myminio` server. Here ARN value is `arn:minio:sqs::1:mqtt`.
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```
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mc mb myminio/images
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mc event add myminio/images arn:minio:sqs::1:mqtt --suffix .jpg
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mc event list myminio/images
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arn:minio:sqs::1:amqp s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
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```
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### Step 3: Test on MQTT
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The python program below waits on mqtt topic `/minio` and prints event notifications on the console. We use [paho-mqtt](https://pypi.python.org/pypi/paho-mqtt/) library to do this.
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```py
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#!/usr/bin/env python3
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from __future__ import print_function
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import paho.mqtt.client as mqtt
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# This is the Subscriber
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def on_connect(client, userdata, flags, rc):
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print("Connected with result code "+str(rc))
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# qos level is set to 1
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client.subscribe("minio", 1)
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def on_message(client, userdata, msg):
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print(msg.payload)
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# client_id is a randomly generated unique ID for the mqtt broker to identify the connection.
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client = mqtt.Client(client_id="myclientid",clean_session=False)
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client.on_connect = on_connect
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client.on_message = on_message
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client.connect("localhost",1883,60)
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client.loop_forever()
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```
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Execute this example python program to watch for MQTT events on the console.
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```py
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python mqtt.py
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```
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Open another terminal and upload a JPEG image into `images` bucket.
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```
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mc cp myphoto.jpg myminio/images
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```
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You should receive the following event notification via MQTT once the upload completes.
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```py
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python mqtt.py
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{“Records”:[{“eventVersion”:”2.0",”eventSource”:”aws:s3",”awsRegion”:”",”eventTime”:”2016–09–08T22:34:38.226Z”,”eventName”:”s3:ObjectCreated:Put”,”userIdentity”:{“principalId”:”minio”},”requestParameters”:{“sourceIPAddress”:”10.1.10.150:44576"},”responseElements”:{},”s3":{“s3SchemaVersion”:”1.0",”configurationId”:”Config”,”bucket”:{“name”:”images”,”ownerIdentity”:{“principalId”:”minio”},”arn”:”arn:aws:s3:::images”},”object”:{“key”:”myphoto.jpg”,”size”:200436,”sequencer”:”147279EAF9F40933"}}}],”level”:”info”,”msg”:””,”time”:”2016–09–08T15:34:38–07:00"}
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```
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<a name="Elasticsearch"></a>
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## Publish MinIO events via Elasticsearch
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Install [Elasticsearch](https://www.elastic.co/downloads/elasticsearch) server.
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This notification target supports two formats: _namespace_ and _access_.
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When the _namespace_ format is used, MinIO synchronizes objects in the bucket with documents in the index. For each event in the MinIO, the server creates a document with the bucket and object name from the event as the document ID. Other details of the event are stored in the body of the document. Thus if an existing object is over-written in MinIO, the corresponding document in the Elasticsearch index is updated. If an object is deleted, the corresponding document is deleted from the index.
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When the _access_ format is used, MinIO appends events as documents in an Elasticsearch index. For each event, a document with the event details, with the timestamp of document set to the event's timestamp is appended to an index. The ID of the documented is randomly generated by Elasticsearch. No documents are deleted or modified in this format.
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The steps below show how to use this notification target in `namespace` format. The other format is very similar and is omitted for brevity.
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### Step 1: Ensure minimum requirements are met
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MinIO requires a 5.x series version of Elasticsearch. This is the latest major release series. Elasticsearch provides version upgrade migration guidelines [here](https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-upgrade.html).
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||
### Step 2: Add Elasticsearch endpoint to MinIO
|
||
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||
The Elasticsearch configuration is located in the `notify_elasticsearch` key. Create a configuration key-value pair here for your Elasticsearch instance. The key is a name for your Elasticsearch endpoint, and the value is a collection of key-value parameters described in the table below.
|
||
|
||
```
|
||
KEY:
|
||
notify_elasticsearch[:name] publish bucket notifications to Elasticsearch endpoints
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||
|
||
ARGS:
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url* (url) Elasticsearch server's address, with optional authentication info
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index* (string) Elasticsearch index to store/update events, index is auto-created
|
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format* (namespace*|access) 'namespace' reflects current bucket/object list and 'access' reflects a journal of object operations, defaults to 'namespace'
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queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
|
||
queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
|
||
comment (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
or environment variables
|
||
|
||
```
|
||
KEY:
|
||
notify_elasticsearch[:name] publish bucket notifications to Elasticsearch endpoints
|
||
|
||
ARGS:
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||
MINIO_NOTIFY_ELASTICSEARCH_ENABLE* (on|off) enable notify_elasticsearch target, default is 'off'
|
||
MINIO_NOTIFY_ELASTICSEARCH_URL* (url) Elasticsearch server's address, with optional authentication info
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MINIO_NOTIFY_ELASTICSEARCH_INDEX* (string) Elasticsearch index to store/update events, index is auto-created
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MINIO_NOTIFY_ELASTICSEARCH_FORMAT* (namespace*|access) 'namespace' reflects current bucket/object list and 'access' reflects a journal of object operations, defaults to 'namespace'
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MINIO_NOTIFY_ELASTICSEARCH_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
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MINIO_NOTIFY_ELASTICSEARCH_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
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||
MINIO_NOTIFY_ELASTICSEARCH_COMMENT (sentence) optionally add a comment to this setting
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||
```
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||
For example: `http://localhost:9200` or with authentication info `http://elastic:MagicWord@127.0.0.1:9200`.
|
||
|
||
MinIO supports persistent event store. The persistent store will backup events when the Elasticsearch broker goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
|
||
|
||
If Elasticsearch has authentication enabled, the credentials can be supplied to MinIO via the `url` parameter formatted as `PROTO://USERNAME:PASSWORD@ELASTICSEARCH_HOST:PORT`.
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||
|
||
To update the configuration, use `mc admin config get` command to get the current configuration.
|
||
|
||
```sh
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||
$ mc admin config get myminio/ notify_elasticsearch
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||
notify_elasticsearch:1 queue_limit="0" url="" format="namespace" index="" queue_dir=""
|
||
```
|
||
|
||
Use `mc admin config set` command to update the configuration for the deployment. Restart the MinIO server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::1:elasticsearch` at start-up if there were no errors.
|
||
|
||
```sh
|
||
$ mc admin config set myminio notify_elasticsearch:1 queue_limit="0" url="http://127.0.0.1:9200" format="namespace" index="minio_events" queue_dir=""
|
||
```
|
||
|
||
Note that, you can add as many Elasticsearch server endpoint configurations as needed by providing an identifier (like "1" in the example above) for the Elasticsearch instance and an object of per-server configuration parameters.
|
||
|
||
### Step 3: Enable bucket notification using MinIO client
|
||
|
||
We will now enable bucket event notifications on a bucket named `images`. Whenever a JPEG image is created/overwritten, a new document is added or an existing document is updated in the Elasticsearch index configured above. When an existing object is deleted, the corresponding document is deleted from the index. Thus, the rows in the Elasticsearch index, reflect the `.jpg` objects in the `images` bucket.
|
||
|
||
To configure this bucket notification, we need the ARN printed by MinIO in the previous step. Additional information about ARN is available [here](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html).
|
||
|
||
With the `mc` tool, the configuration is very simple to add. Let us say that the MinIO server is aliased as `myminio` in our mc configuration. Execute the following:
|
||
|
||
```
|
||
mc mb myminio/images
|
||
mc event add myminio/images arn:minio:sqs::1:elasticsearch --suffix .jpg
|
||
mc event list myminio/images
|
||
arn:minio:sqs::1:elasticsearch s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
|
||
```
|
||
|
||
### Step 4: Test on Elasticsearch
|
||
|
||
Upload a JPEG image into `images` bucket.
|
||
|
||
```
|
||
mc cp myphoto.jpg myminio/images
|
||
```
|
||
|
||
Use curl to view contents of `minio_events` index.
|
||
|
||
```
|
||
$ curl "http://localhost:9200/minio_events/_search?pretty=true"
|
||
{
|
||
"took" : 40,
|
||
"timed_out" : false,
|
||
"_shards" : {
|
||
"total" : 5,
|
||
"successful" : 5,
|
||
"failed" : 0
|
||
},
|
||
"hits" : {
|
||
"total" : 1,
|
||
"max_score" : 1.0,
|
||
"hits" : [
|
||
{
|
||
"_index" : "minio_events",
|
||
"_type" : "event",
|
||
"_id" : "images/myphoto.jpg",
|
||
"_score" : 1.0,
|
||
"_source" : {
|
||
"Records" : [
|
||
{
|
||
"eventVersion" : "2.0",
|
||
"eventSource" : "minio:s3",
|
||
"awsRegion" : "",
|
||
"eventTime" : "2017-03-30T08:00:41Z",
|
||
"eventName" : "s3:ObjectCreated:Put",
|
||
"userIdentity" : {
|
||
"principalId" : "minio"
|
||
},
|
||
"requestParameters" : {
|
||
"sourceIPAddress" : "127.0.0.1:38062"
|
||
},
|
||
"responseElements" : {
|
||
"x-amz-request-id" : "14B09A09703FC47B",
|
||
"x-minio-origin-endpoint" : "http://192.168.86.115:9000"
|
||
},
|
||
"s3" : {
|
||
"s3SchemaVersion" : "1.0",
|
||
"configurationId" : "Config",
|
||
"bucket" : {
|
||
"name" : "images",
|
||
"ownerIdentity" : {
|
||
"principalId" : "minio"
|
||
},
|
||
"arn" : "arn:aws:s3:::images"
|
||
},
|
||
"object" : {
|
||
"key" : "myphoto.jpg",
|
||
"size" : 6474,
|
||
"eTag" : "a3410f4f8788b510d6f19c5067e60a90",
|
||
"sequencer" : "14B09A09703FC47B"
|
||
}
|
||
},
|
||
"source" : {
|
||
"host" : "127.0.0.1",
|
||
"port" : "38062",
|
||
"userAgent" : "MinIO (linux; amd64) minio-go/2.0.3 mc/2017-02-15T17:57:25Z"
|
||
}
|
||
}
|
||
]
|
||
}
|
||
}
|
||
]
|
||
}
|
||
}
|
||
```
|
||
|
||
This output shows that a document has been created for the event in Elasticsearch.
|
||
|
||
Here we see that the document ID is the bucket and object name. In case `access` format was used, the document ID would be automatically generated by Elasticsearch.
|
||
|
||
<a name="Redis"></a>
|
||
|
||
## Publish MinIO events via Redis
|
||
|
||
Install [Redis](http://redis.io/download) server. For illustrative purposes, we have set the database password as "yoursecret".
|
||
|
||
This notification target supports two formats: _namespace_ and _access_.
|
||
|
||
When the _namespace_ format is used, MinIO synchronizes objects in the bucket with entries in a hash. For each entry, the key is formatted as "bucketName/objectName" for an object that exists in the bucket, and the value is the JSON-encoded event data about the operation that created/replaced the object in MinIO. When objects are updated or deleted, the corresponding entry in the hash is also updated or deleted.
|
||
|
||
When the _access_ format is used, MinIO appends events to a list using [RPUSH](https://redis.io/commands/rpush). Each item in the list is a JSON encoded list with two items, where the first item is a timestamp string, and the second item is a JSON object containing event data about the operation that happened in the bucket. No entries appended to the list are updated or deleted by MinIO in this format.
|
||
|
||
The steps below show how to use this notification target in `namespace` and `access` format.
|
||
|
||
### Step 1: Add Redis endpoint to MinIO
|
||
|
||
The MinIO server configuration file is stored on the backend in json format.The Redis configuration is located in the `redis` key under the `notify` top-level key. Create a configuration key-value pair here for your Redis instance. The key is a name for your Redis endpoint, and the value is a collection of key-value parameters described in the table below.
|
||
|
||
```
|
||
KEY:
|
||
notify_redis[:name] publish bucket notifications to Redis datastores
|
||
|
||
ARGS:
|
||
address* (address) Redis server's address. For example: `localhost:6379`
|
||
key* (string) Redis key to store/update events, key is auto-created
|
||
format* (namespace*|access) 'namespace' reflects current bucket/object list and 'access' reflects a journal of object operations, defaults to 'namespace'
|
||
password (string) Redis server password
|
||
queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
|
||
queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
|
||
comment (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
or environment variables
|
||
|
||
```
|
||
KEY:
|
||
notify_redis[:name] publish bucket notifications to Redis datastores
|
||
|
||
ARGS:
|
||
MINIO_NOTIFY_REDIS_ENABLE* (on|off) enable notify_redis target, default is 'off'
|
||
MINIO_NOTIFY_REDIS_KEY* (string) Redis key to store/update events, key is auto-created
|
||
MINIO_NOTIFY_REDIS_FORMAT* (namespace*|access) 'namespace' reflects current bucket/object list and 'access' reflects a journal of object operations, defaults to 'namespace'
|
||
MINIO_NOTIFY_REDIS_PASSWORD (string) Redis server password
|
||
MINIO_NOTIFY_REDIS_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
|
||
MINIO_NOTIFY_REDIS_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
|
||
MINIO_NOTIFY_REDIS_COMMENT (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
MinIO supports persistent event store. The persistent store will backup events when the Redis broker goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
|
||
|
||
To update the configuration, use `mc admin config get` command to get the current configuration.
|
||
|
||
```sh
|
||
$ mc admin config get myminio/ notify_redis
|
||
notify_redis:1 address="" format="namespace" key="" password="" queue_dir="" queue_limit="0"
|
||
```
|
||
|
||
Use `mc admin config set` command to update the configuration for the deployment.Restart the MinIO server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::1:redis` at start-up if there were no errors.
|
||
|
||
```sh
|
||
$ mc admin config set myminio/ notify_redis:1 address="127.0.0.1:6379" format="namespace" key="bucketevents" password="yoursecret" queue_dir="" queue_limit="0"
|
||
```
|
||
|
||
Note that, you can add as many Redis server endpoint configurations as needed by providing an identifier (like "1" in the example above) for the Redis instance and an object of per-server configuration parameters.
|
||
|
||
### Step 2: Enable bucket notification using MinIO client
|
||
|
||
We will now enable bucket event notifications on a bucket named `images`. Whenever a JPEG image is created/overwritten, a new key is added or an existing key is updated in the Redis hash configured above. When an existing object is deleted, the corresponding key is deleted from the Redis hash. Thus, the rows in the Redis hash, reflect the `.jpg` objects in the `images` bucket.
|
||
|
||
To configure this bucket notification, we need the ARN printed by MinIO in the previous step. Additional information about ARN is available [here](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html).
|
||
|
||
With the `mc` tool, the configuration is very simple to add. Let us say that the MinIO server is aliased as `myminio` in our mc configuration. Execute the following:
|
||
|
||
```
|
||
mc mb myminio/images
|
||
mc event add myminio/images arn:minio:sqs::1:redis --suffix .jpg
|
||
mc event list myminio/images
|
||
arn:minio:sqs::1:redis s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
|
||
```
|
||
|
||
### Step 3: Test on Redis
|
||
|
||
Start the `redis-cli` Redis client program to inspect the contents in Redis. Run the `monitor` Redis command. This prints each operation performed on Redis as it occurs.
|
||
|
||
```
|
||
redis-cli -a yoursecret
|
||
127.0.0.1:6379> monitor
|
||
OK
|
||
```
|
||
|
||
Open another terminal and upload a JPEG image into `images` bucket.
|
||
|
||
```
|
||
mc cp myphoto.jpg myminio/images
|
||
```
|
||
|
||
In the previous terminal, you will now see the operation that MinIO performs on Redis:
|
||
|
||
```
|
||
127.0.0.1:6379> monitor
|
||
OK
|
||
1490686879.650649 [0 172.17.0.1:44710] "PING"
|
||
1490686879.651061 [0 172.17.0.1:44710] "HSET" "minio_events" "images/myphoto.jpg" "{\"Records\":[{\"eventVersion\":\"2.0\",\"eventSource\":\"minio:s3\",\"awsRegion\":\"\",\"eventTime\":\"2017-03-28T07:41:19Z\",\"eventName\":\"s3:ObjectCreated:Put\",\"userIdentity\":{\"principalId\":\"minio\"},\"requestParameters\":{\"sourceIPAddress\":\"127.0.0.1:52234\"},\"responseElements\":{\"x-amz-request-id\":\"14AFFBD1ACE5F632\",\"x-minio-origin-endpoint\":\"http://192.168.86.115:9000\"},\"s3\":{\"s3SchemaVersion\":\"1.0\",\"configurationId\":\"Config\",\"bucket\":{\"name\":\"images\",\"ownerIdentity\":{\"principalId\":\"minio\"},\"arn\":\"arn:aws:s3:::images\"},\"object\":{\"key\":\"myphoto.jpg\",\"size\":2586,\"eTag\":\"5d284463f9da279f060f0ea4d11af098\",\"sequencer\":\"14AFFBD1ACE5F632\"}},\"source\":{\"host\":\"127.0.0.1\",\"port\":\"52234\",\"userAgent\":\"MinIO (linux; amd64) minio-go/2.0.3 mc/2017-02-15T17:57:25Z\"}}]}"
|
||
```
|
||
|
||
Here we see that MinIO performed `HSET` on `minio_events` key.
|
||
|
||
In case, `access` format was used, then `minio_events` would be a list, and the MinIO server would have performed an `RPUSH` to append to the list. A consumer of this list would ideally use `BLPOP` to remove list items from the left-end of the list.
|
||
|
||
<a name="NATS"></a>
|
||
|
||
## Publish MinIO events via NATS
|
||
|
||
Install NATS from [here](http://nats.io/).
|
||
|
||
### Step 1: Add NATS endpoint to MinIO
|
||
|
||
MinIO supports persistent event store. The persistent store will backup events when the NATS broker goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
|
||
|
||
```
|
||
KEY:
|
||
notify_nats[:name] publish bucket notifications to NATS endpoints
|
||
|
||
ARGS:
|
||
address* (address) NATS server address e.g. '0.0.0.0:4222'
|
||
subject* (string) NATS subscription subject
|
||
username (string) NATS username
|
||
password (string) NATS password
|
||
token (string) NATS token
|
||
tls (on|off) set to 'on' to enable TLS
|
||
tls_skip_verify (on|off) trust server TLS without verification, defaults to "on" (verify)
|
||
ping_interval (duration) client ping commands interval in s,m,h,d. Disabled by default
|
||
streaming (on|off) set to 'on', to use streaming NATS server
|
||
streaming_async (on|off) set to 'on', to enable asynchronous publish
|
||
streaming_max_pub_acks_in_flight (number) number of messages to publish without waiting for ACKs
|
||
streaming_cluster_id (string) unique ID for NATS streaming cluster
|
||
cert_authority (string) path to certificate chain of the target NATS server
|
||
client_cert (string) client cert for NATS mTLS auth
|
||
client_key (string) client cert key for NATS mTLS auth
|
||
queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
|
||
queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
|
||
comment (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
or environment variables
|
||
```
|
||
KEY:
|
||
notify_nats[:name] publish bucket notifications to NATS endpoints
|
||
|
||
ARGS:
|
||
MINIO_NOTIFY_NATS_ENABLE* (on|off) enable notify_nats target, default is 'off'
|
||
MINIO_NOTIFY_NATS_ADDRESS* (address) NATS server address e.g. '0.0.0.0:4222'
|
||
MINIO_NOTIFY_NATS_SUBJECT* (string) NATS subscription subject
|
||
MINIO_NOTIFY_NATS_USERNAME (string) NATS username
|
||
MINIO_NOTIFY_NATS_PASSWORD (string) NATS password
|
||
MINIO_NOTIFY_NATS_TOKEN (string) NATS token
|
||
MINIO_NOTIFY_NATS_TLS (on|off) set to 'on' to enable TLS
|
||
MINIO_NOTIFY_NATS_TLS_SKIP_VERIFY (on|off) trust server TLS without verification, defaults to "on" (verify)
|
||
MINIO_NOTIFY_NATS_PING_INTERVAL (duration) client ping commands interval in s,m,h,d. Disabled by default
|
||
MINIO_NOTIFY_NATS_STREAMING (on|off) set to 'on', to use streaming NATS server
|
||
MINIO_NOTIFY_NATS_STREAMING_ASYNC (on|off) set to 'on', to enable asynchronous publish
|
||
MINIO_NOTIFY_NATS_STREAMING_MAX_PUB_ACKS_IN_FLIGHT (number) number of messages to publish without waiting for ACKs
|
||
MINIO_NOTIFY_NATS_STREAMING_CLUSTER_ID (string) unique ID for NATS streaming cluster
|
||
MINIO_NOTIFY_NATS_CERT_AUTHORITY (string) path to certificate chain of the target NATS server
|
||
MINIO_NOTIFY_NATS_CLIENT_CERT (string) client cert for NATS mTLS auth
|
||
MINIO_NOTIFY_NATS_CLIENT_KEY (string) client cert key for NATS mTLS auth
|
||
MINIO_NOTIFY_NATS_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
|
||
MINIO_NOTIFY_NATS_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
|
||
MINIO_NOTIFY_NATS_COMMENT (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment.
|
||
|
||
```sh
|
||
$ mc admin config get myminio/ notify_nats
|
||
notify_nats:1 password="yoursecret" streaming_max_pub_acks_in_flight="10" subject="" address="0.0.0.0:4222" token="" username="yourusername" ping_interval="0" queue_limit="0" tls="off" tls_skip_verify="off" streaming_async="on" queue_dir="" streaming_cluster_id="test-cluster" streaming_enable="on"
|
||
```
|
||
|
||
Use `mc admin config set` command to update the configuration for the deployment.Restart MinIO server to reflect config changes. `bucketevents` is the subject used by NATS in this example.
|
||
|
||
```sh
|
||
$ mc admin config set myminio notify_nats:1 password="yoursecret" streaming_max_pub_acks_in_flight="10" subject="" address="0.0.0.0:4222" token="" username="yourusername" ping_interval="0" queue_limit="0" tls="off" streaming_async="on" queue_dir="" streaming_cluster_id="test-cluster" streaming_enable="on"
|
||
```
|
||
|
||
MinIO server also supports [NATS Streaming mode](http://nats.io/documentation/streaming/nats-streaming-intro/) that offers additional functionality like `At-least-once-delivery`, and `Publisher rate limiting`. To configure MinIO server to send notifications to NATS Streaming server, update the MinIO server configuration file as follows:
|
||
|
||
Read more about sections `cluster_id`, `client_id` on [NATS documentation](https://github.com/nats-io/nats-streaming-server/blob/master/README.md). Section `maxPubAcksInflight` is explained [here](https://github.com/nats-io/stan.go#publisher-rate-limiting).
|
||
|
||
### Step 2: Enable bucket notification using MinIO client
|
||
|
||
We will enable bucket event notification to trigger whenever a JPEG image is uploaded or deleted from `images` bucket on `myminio` server. Here ARN value is `arn:minio:sqs::1:nats`. To understand more about ARN please follow [AWS ARN](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) documentation.
|
||
|
||
```
|
||
mc mb myminio/images
|
||
mc event add myminio/images arn:minio:sqs::1:nats --suffix .jpg
|
||
mc event list myminio/images
|
||
arn:minio:sqs::1:nats s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
|
||
```
|
||
|
||
### Step 3: Test on NATS
|
||
|
||
If you use NATS server, check out this sample program below to log the bucket notification added to NATS.
|
||
|
||
```go
|
||
package main
|
||
|
||
// Import Go and NATS packages
|
||
import (
|
||
"log"
|
||
"runtime"
|
||
|
||
"github.com/nats-io/nats.go"
|
||
)
|
||
|
||
func main() {
|
||
|
||
// Create server connection
|
||
natsConnection, _ := nats.Connect("nats://yourusername:yoursecret@localhost:4222")
|
||
log.Println("Connected")
|
||
|
||
// Subscribe to subject
|
||
log.Printf("Subscribing to subject 'bucketevents'\n")
|
||
natsConnection.Subscribe("bucketevents", func(msg *nats.Msg) {
|
||
|
||
// Handle the message
|
||
log.Printf("Received message '%s\n", string(msg.Data)+"'")
|
||
})
|
||
|
||
// Keep the connection alive
|
||
runtime.Goexit()
|
||
}
|
||
```
|
||
|
||
```
|
||
go run nats.go
|
||
2016/10/12 06:39:18 Connected
|
||
2016/10/12 06:39:18 Subscribing to subject 'bucketevents'
|
||
```
|
||
|
||
Open another terminal and upload a JPEG image into `images` bucket.
|
||
|
||
```
|
||
mc cp myphoto.jpg myminio/images
|
||
```
|
||
|
||
The example `nats.go` program prints event notification to console.
|
||
|
||
```
|
||
go run nats.go
|
||
2016/10/12 06:51:26 Connected
|
||
2016/10/12 06:51:26 Subscribing to subject 'bucketevents'
|
||
2016/10/12 06:51:33 Received message '{"EventType":"s3:ObjectCreated:Put","Key":"images/myphoto.jpg","Records":[{"eventVersion":"2.0","eventSource":"aws:s3","awsRegion":"","eventTime":"2016-10-12T13:51:33Z","eventName":"s3:ObjectCreated:Put","userIdentity":{"principalId":"minio"},"requestParameters":{"sourceIPAddress":"[::1]:57106"},"responseElements":{},"s3":{"s3SchemaVersion":"1.0","configurationId":"Config","bucket":{"name":"images","ownerIdentity":{"principalId":"minio"},"arn":"arn:aws:s3:::images"},"object":{"key":"myphoto.jpg","size":56060,"eTag":"1d97bf45ecb37f7a7b699418070df08f","sequencer":"147CCD1AE054BFD0"}}}],"level":"info","msg":"","time":"2016-10-12T06:51:33-07:00"}
|
||
```
|
||
|
||
If you use NATS Streaming server, check out this sample program below to log the bucket notification added to NATS.
|
||
|
||
```go
|
||
package main
|
||
|
||
// Import Go and NATS packages
|
||
import (
|
||
"fmt"
|
||
"runtime"
|
||
|
||
"github.com/nats-io/stan.go"
|
||
)
|
||
|
||
func main() {
|
||
|
||
var stanConnection stan.Conn
|
||
|
||
subscribe := func() {
|
||
fmt.Printf("Subscribing to subject 'bucketevents'\n")
|
||
stanConnection.Subscribe("bucketevents", func(m *stan.Msg) {
|
||
|
||
// Handle the message
|
||
fmt.Printf("Received a message: %s\n", string(m.Data))
|
||
})
|
||
}
|
||
|
||
|
||
stanConnection, _ = stan.Connect("test-cluster", "test-client", stan.NatsURL("nats://yourusername:yoursecret@0.0.0.0:4222"), stan.SetConnectionLostHandler(func(c stan.Conn, _ error) {
|
||
go func() {
|
||
for {
|
||
// Reconnect if the connection is lost.
|
||
if stanConnection == nil || stanConnection.NatsConn() == nil || !stanConnection.NatsConn().IsConnected() {
|
||
stanConnection, _ = stan.Connect("test-cluster", "test-client", stan.NatsURL("nats://yourusername:yoursecret@0.0.0.0:4222"), stan.SetConnectionLostHandler(func(c stan.Conn, _ error) {
|
||
if c.NatsConn() != nil {
|
||
c.NatsConn().Close()
|
||
}
|
||
_ = c.Close()
|
||
}))
|
||
if stanConnection != nil {
|
||
subscribe()
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
}()
|
||
}))
|
||
|
||
// Subscribe to subject
|
||
subscribe()
|
||
|
||
// Keep the connection alive
|
||
runtime.Goexit()
|
||
}
|
||
|
||
```
|
||
|
||
```
|
||
go run nats.go
|
||
2017/07/07 11:47:40 Connected
|
||
2017/07/07 11:47:40 Subscribing to subject 'bucketevents'
|
||
```
|
||
|
||
Open another terminal and upload a JPEG image into `images` bucket.
|
||
|
||
```
|
||
mc cp myphoto.jpg myminio/images
|
||
```
|
||
|
||
The example `nats.go` program prints event notification to console.
|
||
|
||
```
|
||
Received a message: {"EventType":"s3:ObjectCreated:Put","Key":"images/myphoto.jpg","Records":[{"eventVersion":"2.0","eventSource":"minio:s3","awsRegion":"","eventTime":"2017-07-07T18:46:37Z","eventName":"s3:ObjectCreated:Put","userIdentity":{"principalId":"minio"},"requestParameters":{"sourceIPAddress":"192.168.1.80:55328"},"responseElements":{"x-amz-request-id":"14CF20BD1EFD5B93","x-minio-origin-endpoint":"http://127.0.0.1:9000"},"s3":{"s3SchemaVersion":"1.0","configurationId":"Config","bucket":{"name":"images","ownerIdentity":{"principalId":"minio"},"arn":"arn:aws:s3:::images"},"object":{"key":"myphoto.jpg","size":248682,"eTag":"f1671feacb8bbf7b0397c6e9364e8c92","contentType":"image/jpeg","userDefined":{"content-type":"image/jpeg"},"versionId":"1","sequencer":"14CF20BD1EFD5B93"}},"source":{"host":"192.168.1.80","port":"55328","userAgent":"MinIO (linux; amd64) minio-go/2.0.4 mc/DEVELOPMENT.GOGET"}}],"level":"info","msg":"","time":"2017-07-07T11:46:37-07:00"}
|
||
```
|
||
|
||
<a name="PostgreSQL"></a>
|
||
|
||
## Publish MinIO events via PostgreSQL
|
||
|
||
Install [PostgreSQL](https://www.postgresql.org/) database server. For illustrative purposes, we have set the "postgres" user password as `password` and created a database called `minio_events` to store the events.
|
||
|
||
This notification target supports two formats: _namespace_ and _access_.
|
||
|
||
When the _namespace_ format is used, MinIO synchronizes objects in the bucket with rows in the table. It creates rows with two columns: key and value. The key is the bucket and object name of an object that exists in MinIO. The value is JSON encoded event data about the operation that created/replaced the object in MinIO. When objects are updated or deleted, the corresponding row from this table is updated or deleted respectively.
|
||
|
||
When the _access_ format is used, MinIO appends events to a table. It creates rows with two columns: event_time and event_data. The event_time is the time at which the event occurred in the MinIO server. The event_data is the JSON encoded event data about the operation on an object. No rows are deleted or modified in this format.
|
||
|
||
The steps below show how to use this notification target in `namespace` format. The other format is very similar and is omitted for brevity.
|
||
|
||
### Step 1: Ensure minimum requirements are met
|
||
|
||
MinIO requires PostgreSQL version 9.5 or above. MinIO uses the [`INSERT ON CONFLICT`](https://www.postgresql.org/docs/9.5/static/sql-insert.html#SQL-ON-CONFLICT) (aka UPSERT) feature, introduced in version 9.5 and the [JSONB](https://www.postgresql.org/docs/9.4/static/datatype-json.html) data-type introduced in version 9.4.
|
||
|
||
### Step 2: Add PostgreSQL endpoint to MinIO
|
||
|
||
The PostgreSQL configuration is located in the `notify_postgresql` key. Create a configuration key-value pair here for your PostgreSQL instance. The key is a name for your PostgreSQL endpoint, and the value is a collection of key-value parameters described in the table below.
|
||
|
||
```
|
||
KEY:
|
||
notify_postgres[:name] publish bucket notifications to Postgres databases
|
||
|
||
ARGS:
|
||
connection_string* (string) Postgres server connection-string
|
||
table* (string) DB table name to store/update events, table is auto-created
|
||
format* (namespace*|access) 'namespace' reflects current bucket/object list and 'access' reflects a journal of object operations, defaults to 'namespace'
|
||
host (hostname) Postgres server hostname (used only if `connection_string` is empty)
|
||
port (port) Postgres server port, defaults to `5432` (used only if `connection_string` is empty)
|
||
username (string) database username (used only if `connection_string` is empty)
|
||
password (string) database password (used only if `connection_string` is empty)
|
||
database (string) database name (used only if `connection_string` is empty)
|
||
queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
|
||
queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
|
||
comment (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
or environment variables
|
||
```
|
||
KEY:
|
||
notify_postgres[:name] publish bucket notifications to Postgres databases
|
||
|
||
ARGS:
|
||
MINIO_NOTIFY_POSTGRES_ENABLE* (on|off) enable notify_postgres target, default is 'off'
|
||
MINIO_NOTIFY_POSTGRES_CONNECTION_STRING* (string) Postgres server connection-string
|
||
MINIO_NOTIFY_POSTGRES_TABLE* (string) DB table name to store/update events, table is auto-created
|
||
MINIO_NOTIFY_POSTGRES_FORMAT* (namespace*|access) 'namespace' reflects current bucket/object list and 'access' reflects a journal of object operations, defaults to 'namespace'
|
||
MINIO_NOTIFY_POSTGRES_HOST (hostname) Postgres server hostname (used only if `connection_string` is empty)
|
||
MINIO_NOTIFY_POSTGRES_PORT (port) Postgres server port, defaults to `5432` (used only if `connection_string` is empty)
|
||
MINIO_NOTIFY_POSTGRES_USERNAME (string) database username (used only if `connection_string` is empty)
|
||
MINIO_NOTIFY_POSTGRES_PASSWORD (string) database password (used only if `connection_string` is empty)
|
||
MINIO_NOTIFY_POSTGRES_DATABASE (string) database name (used only if `connection_string` is empty)
|
||
MINIO_NOTIFY_POSTGRES_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
|
||
MINIO_NOTIFY_POSTGRES_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
|
||
MINIO_NOTIFY_POSTGRES_COMMENT (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
MinIO supports persistent event store. The persistent store will backup events when the PostgreSQL connection goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
|
||
|
||
Note that for illustration here, we have disabled SSL. In the interest of security, for production this is not recommended.
|
||
To update the configuration, use `mc admin config get` command to get the current configuration.
|
||
|
||
```sh
|
||
$ mc admin config get myminio notify_postgres
|
||
notify_postgres:1 password="" port="" queue_dir="" connection_string="" host="" queue_limit="0" table="" username="" database="" format="namespace"
|
||
```
|
||
|
||
Use `mc admin config set` command to update the configuration for the deployment. Restart the MinIO server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::1:postgresql` at start-up if there were no errors.
|
||
|
||
```sh
|
||
$ mc admin config set myminio notify_postgres:1 password="password" port="5432" queue_dir="" connection_string="sslmode=disable" host="127.0.0.1" queue_limit="0" table="bucketevents" username="postgres" database="minio_events" format="namespace"
|
||
```
|
||
|
||
Note that, you can add as many PostgreSQL server endpoint configurations as needed by providing an identifier (like "1" in the example above) for the PostgreSQL instance and an object of per-server configuration parameters.
|
||
|
||
### Step 3: Enable bucket notification using MinIO client
|
||
|
||
We will now enable bucket event notifications on a bucket named `images`. Whenever a JPEG image is created/overwritten, a new row is added or an existing row is updated in the PostgreSQL configured above. When an existing object is deleted, the corresponding row is deleted from the PostgreSQL table. Thus, the rows in the PostgreSQL table, reflect the `.jpg` objects in the `images` bucket.
|
||
|
||
To configure this bucket notification, we need the ARN printed by MinIO in the previous step. Additional information about ARN is available [here](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html).
|
||
|
||
With the `mc` tool, the configuration is very simple to add. Let us say that the MinIO server is aliased as `myminio` in our mc configuration. Execute the following:
|
||
|
||
```
|
||
# Create bucket named `images` in myminio
|
||
mc mb myminio/images
|
||
# Add notification configuration on the `images` bucket using the MySQL ARN. The --suffix argument filters events.
|
||
mc event add myminio/images arn:minio:sqs::1:postgresql --suffix .jpg
|
||
# Print out the notification configuration on the `images` bucket.
|
||
mc event list myminio/images
|
||
mc event list myminio/images
|
||
arn:minio:sqs::1:postgresql s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
|
||
```
|
||
|
||
### Step 4: Test on PostgreSQL
|
||
|
||
Open another terminal and upload a JPEG image into `images` bucket.
|
||
|
||
```
|
||
mc cp myphoto.jpg myminio/images
|
||
```
|
||
|
||
Open PostgreSQL terminal to list the rows in the `bucketevents` table.
|
||
|
||
```
|
||
$ psql -h 127.0.0.1 -U postgres -d minio_events
|
||
minio_events=# select * from bucketevents;
|
||
|
||
key | value
|
||
--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
||
images/myphoto.jpg | {"Records": [{"s3": {"bucket": {"arn": "arn:aws:s3:::images", "name": "images", "ownerIdentity": {"principalId": "minio"}}, "object": {"key": "myphoto.jpg", "eTag": "1d97bf45ecb37f7a7b699418070df08f", "size": 56060, "sequencer": "147CE57C70B31931"}, "configurationId": "Config", "s3SchemaVersion": "1.0"}, "awsRegion": "", "eventName": "s3:ObjectCreated:Put", "eventTime": "2016-10-12T21:18:20Z", "eventSource": "aws:s3", "eventVersion": "2.0", "userIdentity": {"principalId": "minio"}, "responseElements": {}, "requestParameters": {"sourceIPAddress": "[::1]:39706"}}]}
|
||
(1 row)
|
||
```
|
||
|
||
<a name="MySQL"></a>
|
||
|
||
## Publish MinIO events via MySQL
|
||
|
||
Install MySQL from [here](https://dev.mysql.com/downloads/mysql/). For illustrative purposes, we have set the root password as `password` and created a database called `miniodb` to store the events.
|
||
|
||
This notification target supports two formats: _namespace_ and _access_.
|
||
|
||
When the _namespace_ format is used, MinIO synchronizes objects in the bucket with rows in the table. It creates rows with two columns: key_name and value. The key_name is the bucket and object name of an object that exists in MinIO. The value is JSON encoded event data about the operation that created/replaced the object in MinIO. When objects are updated or deleted, the corresponding row from this table is updated or deleted respectively.
|
||
|
||
When the _access_ format is used, MinIO appends events to a table. It creates rows with two columns: event_time and event_data. The event_time is the time at which the event occurred in the MinIO server. The event_data is the JSON encoded event data about the operation on an object. No rows are deleted or modified in this format.
|
||
|
||
The steps below show how to use this notification target in `namespace` format. The other format is very similar and is omitted for brevity.
|
||
|
||
### Step 1: Ensure minimum requirements are met
|
||
|
||
MinIO requires MySQL version 5.7.8 or above. MinIO uses the [JSON](https://dev.mysql.com/doc/refman/5.7/en/json.html) data-type introduced in version 5.7.8. We tested this setup on MySQL 5.7.17.
|
||
|
||
### Step 2: Add MySQL server endpoint configuration to MinIO
|
||
|
||
The MySQL configuration is located in the `notify_mysql` key. Create a configuration key-value pair here for your MySQL instance. The key is a name for your MySQL endpoint, and the value is a collection of key-value parameters described in the table below.
|
||
|
||
```
|
||
KEY:
|
||
notify_mysql[:name] publish bucket notifications to MySQL databases. When multiple MySQL server endpoints are needed, a user specified "name" can be added for each configuration, (e.g."notify_mysql:myinstance").
|
||
|
||
ARGS:
|
||
dsn_string* (string) MySQL data-source-name connection string
|
||
table* (string) DB table name to store/update events, table is auto-created
|
||
format* (namespace*|access) 'namespace' reflects current bucket/object list and 'access' reflects a journal of object operations, defaults to 'namespace'
|
||
host (hostname) MySQL server hostname (used only if `dsn_string` is empty)
|
||
port (port) MySQL server port (used only if `dsn_string` is empty)
|
||
username (string) database username (used only if `dsn_string` is empty)
|
||
password (string) database password (used only if `dsn_string` is empty)
|
||
database (string) database name (used only if `dsn_string` is empty)
|
||
queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
|
||
queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
|
||
comment (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
or environment variables
|
||
```
|
||
KEY:
|
||
notify_mysql[:name] publish bucket notifications to MySQL databases
|
||
|
||
ARGS:
|
||
MINIO_NOTIFY_MYSQL_ENABLE* (on|off) enable notify_mysql target, default is 'off'
|
||
MINIO_NOTIFY_MYSQL_DSN_STRING* (string) MySQL data-source-name connection string
|
||
MINIO_NOTIFY_MYSQL_TABLE* (string) DB table name to store/update events, table is auto-created
|
||
MINIO_NOTIFY_MYSQL_FORMAT* (namespace*|access) 'namespace' reflects current bucket/object list and 'access' reflects a journal of object operations, defaults to 'namespace'
|
||
MINIO_NOTIFY_MYSQL_HOST (hostname) MySQL server hostname (used only if `dsn_string` is empty)
|
||
MINIO_NOTIFY_MYSQL_PORT (port) MySQL server port (used only if `dsn_string` is empty)
|
||
MINIO_NOTIFY_MYSQL_USERNAME (string) database username (used only if `dsn_string` is empty)
|
||
MINIO_NOTIFY_MYSQL_PASSWORD (string) database password (used only if `dsn_string` is empty)
|
||
MINIO_NOTIFY_MYSQL_DATABASE (string) database name (used only if `dsn_string` is empty)
|
||
MINIO_NOTIFY_MYSQL_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
|
||
MINIO_NOTIFY_MYSQL_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
|
||
MINIO_NOTIFY_MYSQL_COMMENT (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
`dsn_string` is optional, if not specified, the connection information specified by the `host`, `port`, `user`, `password` and `database` parameters are used.
|
||
|
||
MinIO supports persistent event store. The persistent store will backup events if MySQL connection goes offline and then replays the stored events when the broken connection comes back up. The event store can be configured by setting a directory path in `queue_dir` field, and the maximum number of events, which can be stored in a `queue_dir`, in `queue_limit` field. For example, `queue_dir` can be set to `/home/events` and `queue_limit` can be set to `1000`. By default, the `queue_limit` is set to `10000`.
|
||
|
||
Before updating the configuration, let's start with `mc admin config get` command to get the current configuration.
|
||
|
||
```sh
|
||
$ mc admin config get myminio/ notify_mysql
|
||
notify_mysql:myinstance table="" database="" format="namespace" password="" port="" queue_dir="" queue_limit="0" username="" dsn_string="" host=""
|
||
```
|
||
|
||
Use `mc admin config set` command to update MySQL notification configuration for the deployment.
|
||
|
||
```sh
|
||
$ mc admin config set myminio notify_mysql:myinstance table="minio_images" database="miniodb" format="namespace" password="" port="3306" queue_dir="" queue_limit="0" username="root" dsn_string="" host="172.17.0.1"
|
||
```
|
||
|
||
Note that, you can add as many MySQL server endpoint configurations as needed by providing an identifier (like "myinstance" in the example above) for each MySQL instance desired.
|
||
|
||
Restart the MinIO server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::myinstance:mysql` at start-up, if there are no errors.
|
||
|
||
### Step 3: Enable bucket notification using MinIO client
|
||
|
||
We will now setup bucket notifications on a bucket named `images`. Whenever a JPEG image object is created/overwritten, a new row is added or an existing row is updated in the MySQL table configured above. When an existing object is deleted, the corresponding row is deleted from the MySQL table. Thus, the rows in the MySQL table, reflect the `.jpg` objects in the `images` bucket.
|
||
|
||
To configure this bucket notification, we need the ARN printed by MinIO in the previous step. Additional information about ARN is available [here](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html).
|
||
|
||
With the `mc` tool, the configuration is very simple to add. Let us say that the MinIO server is aliased as `myminio` in our mc configuration. Execute the following:
|
||
|
||
```
|
||
# Create bucket named `images` in myminio
|
||
mc mb myminio/images
|
||
# Add notification configuration on the `images` bucket using the MySQL ARN. The --suffix argument filters events.
|
||
mc event add myminio/images arn:minio:sqs::myinstance:mysql --suffix .jpg
|
||
# Print out the notification configuration on the `images` bucket.
|
||
mc event list myminio/images
|
||
arn:minio:sqs::myinstance:mysql s3:ObjectCreated:*,s3:ObjectRemoved:*,s3:ObjectAccessed:* Filter: suffix=”.jpg”
|
||
```
|
||
|
||
### Step 4: Test on MySQL
|
||
|
||
Open another terminal and upload a JPEG image into `images` bucket:
|
||
|
||
```
|
||
mc cp myphoto.jpg myminio/images
|
||
```
|
||
|
||
Open MySQL terminal and list the rows in the `minio_images` table.
|
||
|
||
```
|
||
$ mysql -h 172.17.0.1 -P 3306 -u root -p miniodb
|
||
mysql> select * from minio_images;
|
||
+--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|
||
| key_name | value |
|
||
+--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|
||
| images/myphoto.jpg | {"Records": [{"s3": {"bucket": {"arn": "arn:aws:s3:::images", "name": "images", "ownerIdentity": {"principalId": "minio"}}, "object": {"key": "myphoto.jpg", "eTag": "467886be95c8ecfd71a2900e3f461b4f", "size": 26, "sequencer": "14AC59476F809FD3"}, "configurationId": "Config", "s3SchemaVersion": "1.0"}, "awsRegion": "", "eventName": "s3:ObjectCreated:Put", "eventTime": "2017-03-16T11:29:00Z", "eventSource": "aws:s3", "eventVersion": "2.0", "userIdentity": {"principalId": "minio"}, "responseElements": {"x-amz-request-id": "14AC59476F809FD3", "x-minio-origin-endpoint": "http://192.168.86.110:9000"}, "requestParameters": {"sourceIPAddress": "127.0.0.1:38260"}}]} |
|
||
+--------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|
||
1 row in set (0.01 sec)
|
||
|
||
```
|
||
|
||
<a name="apache-kafka"></a>
|
||
|
||
## Publish MinIO events via Kafka
|
||
|
||
Install Apache Kafka from [here](http://kafka.apache.org/).
|
||
|
||
### Step 1: Ensure minimum requirements are met
|
||
|
||
MinIO requires Kafka version 0.10 or 0.9. Internally MinIO uses the [Shopify/sarama](https://github.com/Shopify/sarama/) library and so has the same version compatibility as provided by this library.
|
||
|
||
### Step 2: Add Kafka endpoint to MinIO
|
||
|
||
MinIO supports persistent event store. The persistent store will backup events when the kafka broker goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
|
||
|
||
```
|
||
KEY:
|
||
notify_kafka[:name] publish bucket notifications to Kafka endpoints
|
||
|
||
ARGS:
|
||
brokers* (csv) comma separated list of Kafka broker addresses
|
||
topic (string) Kafka topic used for bucket notifications
|
||
sasl_username (string) username for SASL/PLAIN or SASL/SCRAM authentication
|
||
sasl_password (string) password for SASL/PLAIN or SASL/SCRAM authentication
|
||
tls_client_auth (string) clientAuth determines the Kafka server's policy for TLS client auth
|
||
sasl (on|off) set to 'on' to enable SASL authentication
|
||
tls (on|off) set to 'on' to enable TLS
|
||
tls_skip_verify (on|off) trust server TLS without verification, defaults to "on" (verify)
|
||
client_tls_cert (path) path to client certificate for mTLS auth
|
||
client_tls_key (path) path to client key for mTLS auth
|
||
queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
|
||
queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
|
||
comment (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
or environment variables
|
||
```
|
||
KEY:
|
||
notify_kafka[:name] publish bucket notifications to Kafka endpoints
|
||
|
||
ARGS:
|
||
MINIO_NOTIFY_KAFKA_ENABLE* (on|off) enable notify_kafka target, default is 'off'
|
||
MINIO_NOTIFY_KAFKA_BROKERS* (csv) comma separated list of Kafka broker addresses
|
||
MINIO_NOTIFY_KAFKA_TOPIC (string) Kafka topic used for bucket notifications
|
||
MINIO_NOTIFY_KAFKA_SASL_USERNAME (string) username for SASL/PLAIN or SASL/SCRAM authentication
|
||
MINIO_NOTIFY_KAFKA_SASL_PASSWORD (string) password for SASL/PLAIN or SASL/SCRAM authentication
|
||
MINIO_NOTIFY_KAFKA_TLS_CLIENT_AUTH (string) clientAuth determines the Kafka server's policy for TLS client auth
|
||
MINIO_NOTIFY_KAFKA_SASL (on|off) set to 'on' to enable SASL authentication
|
||
MINIO_NOTIFY_KAFKA_TLS (on|off) set to 'on' to enable TLS
|
||
MINIO_NOTIFY_KAFKA_TLS_SKIP_VERIFY (on|off) trust server TLS without verification, defaults to "on" (verify)
|
||
MINIO_NOTIFY_KAFKA_CLIENT_TLS_CERT (path) path to client certificate for mTLS auth
|
||
MINIO_NOTIFY_KAFKA_CLIENT_TLS_KEY (path) path to client key for mTLS auth
|
||
MINIO_NOTIFY_KAFKA_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
|
||
MINIO_NOTIFY_KAFKA_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
|
||
MINIO_NOTIFY_KAFKA_COMMENT (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
To update the configuration, use `mc admin config get` command to get the current configuration.
|
||
|
||
```sh
|
||
$ mc admin config get myminio/ notify_kafka
|
||
notify_kafka:1 tls_skip_verify="off" queue_dir="" queue_limit="0" sasl="off" sasl_password="" sasl_username="" tls_client_auth="0" tls="off" brokers="" topic="" client_tls_cert="" client_tls_key=""
|
||
```
|
||
|
||
Use `mc admin config set` command to update the configuration for the deployment. Restart the MinIO server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::1:kafka` at start-up if there were no errors.`bucketevents` is the topic used by kafka in this example.
|
||
|
||
```sh
|
||
$ mc admin config set myminio notify_kafka:1 tls_skip_verify="off" queue_dir="" queue_limit="0" sasl="off" sasl_password="" sasl_username="" tls_client_auth="0" tls="off" client_tls_cert="" client_tls_key="" brokers="localhost:9092,localhost:9093" topic="bucketevents"
|
||
```
|
||
|
||
### Step 3: Enable bucket notification using MinIO client
|
||
|
||
We will enable bucket event notification to trigger whenever a JPEG image is uploaded or deleted from `images` bucket on `myminio` server. Here ARN value is `arn:minio:sqs::1:kafka`. To understand more about ARN please follow [AWS ARN](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) documentation.
|
||
|
||
```
|
||
mc mb myminio/images
|
||
mc event add myminio/images arn:minio:sqs::1:kafka --suffix .jpg
|
||
mc event list myminio/images
|
||
arn:minio:sqs::1:kafka s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
|
||
```
|
||
|
||
### Step 4: Test on Kafka
|
||
|
||
We used [kafkacat](https://github.com/edenhill/kafkacat) to print all notifications on the console.
|
||
|
||
```
|
||
kafkacat -C -b localhost:9092 -t bucketevents
|
||
```
|
||
|
||
Open another terminal and upload a JPEG image into `images` bucket.
|
||
|
||
```
|
||
mc cp myphoto.jpg myminio/images
|
||
```
|
||
|
||
`kafkacat` prints the event notification to the console.
|
||
|
||
```
|
||
kafkacat -b localhost:9092 -t bucketevents
|
||
{
|
||
"EventName": "s3:ObjectCreated:Put",
|
||
"Key": "images/myphoto.jpg",
|
||
"Records": [
|
||
{
|
||
"eventVersion": "2.0",
|
||
"eventSource": "minio:s3",
|
||
"awsRegion": "",
|
||
"eventTime": "2019-09-10T17:41:54Z",
|
||
"eventName": "s3:ObjectCreated:Put",
|
||
"userIdentity": {
|
||
"principalId": "AKIAIOSFODNN7EXAMPLE"
|
||
},
|
||
"requestParameters": {
|
||
"accessKey": "AKIAIOSFODNN7EXAMPLE",
|
||
"region": "",
|
||
"sourceIPAddress": "192.168.56.192"
|
||
},
|
||
"responseElements": {
|
||
"x-amz-request-id": "15C3249451E12784",
|
||
"x-minio-deployment-id": "751a8ba6-acb2-42f6-a297-4cdf1cf1fa4f",
|
||
"x-minio-origin-endpoint": "http://192.168.97.83:9000"
|
||
},
|
||
"s3": {
|
||
"s3SchemaVersion": "1.0",
|
||
"configurationId": "Config",
|
||
"bucket": {
|
||
"name": "images",
|
||
"ownerIdentity": {
|
||
"principalId": "AKIAIOSFODNN7EXAMPLE"
|
||
},
|
||
"arn": "arn:aws:s3:::images"
|
||
},
|
||
"object": {
|
||
"key": "myphoto.jpg",
|
||
"size": 6474,
|
||
"eTag": "430f89010c77aa34fc8760696da62d08-1",
|
||
"contentType": "image/jpeg",
|
||
"userMetadata": {
|
||
"content-type": "image/jpeg"
|
||
},
|
||
"versionId": "1",
|
||
"sequencer": "15C32494527B46C5"
|
||
}
|
||
},
|
||
"source": {
|
||
"host": "192.168.56.192",
|
||
"port": "",
|
||
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0"
|
||
}
|
||
}
|
||
]
|
||
}
|
||
```
|
||
|
||
<a name="webhooks"></a>
|
||
|
||
## Publish MinIO events via Webhooks
|
||
|
||
[Webhooks](https://en.wikipedia.org/wiki/Webhook) are a way to receive information when it happens, rather than continually polling for that data.
|
||
|
||
### Step 1: Add Webhook endpoint to MinIO
|
||
|
||
MinIO supports persistent event store. The persistent store will backup events when the webhook goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
|
||
|
||
To update the configuration, use `mc admin config get` command to get the current configuration.
|
||
|
||
```
|
||
KEY:
|
||
notify_webhook[:name] publish bucket notifications to webhook endpoints
|
||
|
||
ARGS:
|
||
endpoint* (url) webhook server endpoint e.g. http://localhost:8080/minio/events
|
||
auth_token (string) opaque string or JWT authorization token
|
||
queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
|
||
queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
|
||
comment (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
or environment variables
|
||
```
|
||
KEY:
|
||
notify_webhook[:name] publish bucket notifications to webhook endpoints
|
||
|
||
ARGS:
|
||
MINIO_NOTIFY_WEBHOOK_ENABLE* (on|off) enable notify_webhook target, default is 'off'
|
||
MINIO_NOTIFY_WEBHOOK_ENDPOINT* (url) webhook server endpoint e.g. http://localhost:8080/minio/events
|
||
MINIO_NOTIFY_WEBHOOK_AUTH_TOKEN (string) opaque string or JWT authorization token
|
||
MINIO_NOTIFY_WEBHOOK_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
|
||
MINIO_NOTIFY_WEBHOOK_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
|
||
MINIO_NOTIFY_WEBHOOK_COMMENT (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
```sh
|
||
$ mc admin config get myminio/ notify_webhook notify_webhook:1 queue_limit="0" endpoint="" queue_dir=""
|
||
```
|
||
|
||
Use `mc admin config set` command to update the configuration for the deployment. Here the endpoint is the server listening for webhook notifications. Save the settings and restart the MinIO server for changes to take effect. Note that the endpoint needs to be live and reachable when you restart your MinIO server.
|
||
|
||
```sh
|
||
$ mc admin config set myminio notify_webhook:1 queue_limit="0" endpoint="http://localhost:3000" queue_dir=""
|
||
```
|
||
|
||
### Step 2: Enable bucket notification using MinIO client
|
||
|
||
We will enable bucket event notification to trigger whenever a JPEG image is uploaded to `images` bucket on `myminio` server. Here ARN value is `arn:minio:sqs::1:webhook`. To learn more about ARN please follow [AWS ARN](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html) documentation.
|
||
|
||
```
|
||
mc mb myminio/images
|
||
mc mb myminio/images-thumbnail
|
||
mc event add myminio/images arn:minio:sqs::1:webhook --event put --suffix .jpg
|
||
```
|
||
|
||
Check if event notification is successfully configured by
|
||
|
||
```
|
||
mc event list myminio/images
|
||
```
|
||
|
||
You should get a response like this
|
||
|
||
```
|
||
arn:minio:sqs::1:webhook s3:ObjectCreated:* Filter: suffix=".jpg"
|
||
```
|
||
|
||
### Step 3: Test with Thumbnailer
|
||
|
||
We used [Thumbnailer](https://github.com/minio/thumbnailer) to listen for MinIO notifications when a new JPEG file is uploaded (HTTP PUT). Triggered by a notification, Thumbnailer uploads a thumbnail of new image to MinIO server. To start with, download and install Thumbnailer.
|
||
|
||
```
|
||
git clone https://github.com/minio/thumbnailer/
|
||
npm install
|
||
```
|
||
|
||
Then open the Thumbnailer config file at `config/webhook.json` and add the configuration for your MinIO server and then start Thumbnailer by
|
||
|
||
```
|
||
NODE_ENV=webhook node thumbnail-webhook.js
|
||
```
|
||
|
||
Thumbnailer starts running at `http://localhost:3000/`. Next, configure the MinIO server to send notifications to this URL (as mentioned in step 1) and use `mc` to set up bucket notifications (as mentioned in step 2). Then upload a JPEG image to MinIO server by
|
||
|
||
```
|
||
mc cp ~/images.jpg myminio/images
|
||
.../images.jpg: 8.31 KB / 8.31 KB ┃▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓┃ 100.00% 59.42 KB/s 0s
|
||
```
|
||
|
||
Wait a few moments, then check the bucket’s contents with mc ls — you will see a thumbnail appear.
|
||
|
||
```
|
||
mc ls myminio/images-thumbnail
|
||
[2017-02-08 11:39:40 IST] 992B images-thumbnail.jpg
|
||
```
|
||
|
||
<a name="NSQ"></a>
|
||
|
||
## Publish MinIO events to NSQ
|
||
|
||
Install an NSQ Daemon from [here](https://nsq.io/). Or use the following Docker
|
||
command for starting an nsq daemon:
|
||
|
||
```
|
||
docker run --rm -p 4150-4151:4150-4151 nsqio/nsq /nsqd
|
||
```
|
||
|
||
### Step 1: Add NSQ endpoint to MinIO
|
||
|
||
MinIO supports persistent event store. The persistent store will backup events when the NSQ broker goes offline and replays it when the broker comes back online. The event store can be configured by setting the directory path in `queue_dir` field and the maximum limit of events in the queue_dir in `queue_limit` field. For eg, the `queue_dir` can be `/home/events` and `queue_limit` can be `1000`. By default, the `queue_limit` is set to 10000.
|
||
|
||
To update the configuration, use `mc admin config get` command to get the current configuration for `notify_nsq`.
|
||
|
||
```
|
||
KEY:
|
||
notify_nsq[:name] publish bucket notifications to NSQ endpoints
|
||
|
||
ARGS:
|
||
nsqd_address* (address) NSQ server address e.g. '127.0.0.1:4150'
|
||
topic* (string) NSQ topic
|
||
tls (on|off) set to 'on' to enable TLS
|
||
tls_skip_verify (on|off) trust server TLS without verification, defaults to "on" (verify)
|
||
queue_dir (path) staging dir for undelivered messages e.g. '/home/events'
|
||
queue_limit (number) maximum limit for undelivered messages, defaults to '10000'
|
||
comment (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
or environment variables
|
||
```
|
||
KEY:
|
||
notify_nsq[:name] publish bucket notifications to NSQ endpoints
|
||
|
||
ARGS:
|
||
MINIO_NOTIFY_NSQ_ENABLE* (on|off) enable notify_nsq target, default is 'off'
|
||
MINIO_NOTIFY_NSQ_NSQD_ADDRESS* (address) NSQ server address e.g. '127.0.0.1:4150'
|
||
MINIO_NOTIFY_NSQ_TOPIC* (string) NSQ topic
|
||
MINIO_NOTIFY_NSQ_TLS (on|off) set to 'on' to enable TLS
|
||
MINIO_NOTIFY_NSQ_TLS_SKIP_VERIFY (on|off) trust server TLS without verification, defaults to "on" (verify)
|
||
MINIO_NOTIFY_NSQ_QUEUE_DIR (path) staging dir for undelivered messages e.g. '/home/events'
|
||
MINIO_NOTIFY_NSQ_QUEUE_LIMIT (number) maximum limit for undelivered messages, defaults to '10000'
|
||
MINIO_NOTIFY_NSQ_COMMENT (sentence) optionally add a comment to this setting
|
||
```
|
||
|
||
```sh
|
||
$ mc admin config get myminio/ notify_nsq
|
||
notify_nsq:1 nsqd_address="" queue_dir="" queue_limit="0" tls_enable="off" tls_skip_verify="off" topic=""
|
||
```
|
||
|
||
Use `mc admin config set` command to update the configuration for the deployment. Restart the MinIO server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::1:nsq` at start-up if there were no errors.
|
||
|
||
```sh
|
||
$ mc admin config set myminio notify_nsq:1 nsqd_address="127.0.0.1:4150" queue_dir="" queue_limit="0" tls_enable="off" tls_skip_verify="on" topic="minio"
|
||
```
|
||
|
||
Note that, you can add as many NSQ daemon endpoint configurations as needed by providing an identifier (like "1" in the example above) for the NSQ instance and an object of per-server configuration parameters.
|
||
|
||
### Step 2: Enable bucket notification using MinIO client
|
||
|
||
We will enable bucket event notification to trigger whenever a JPEG image is uploaded or deleted `images` bucket on `myminio` server. Here ARN value is `arn:minio:sqs::1:nsq`.
|
||
|
||
```
|
||
mc mb myminio/images
|
||
mc event add myminio/images arn:minio:sqs::1:nsq --suffix .jpg
|
||
mc event list myminio/images
|
||
arn:minio:sqs::1:nsq s3:ObjectCreated:*,s3:ObjectRemoved:* Filter: suffix=”.jpg”
|
||
```
|
||
|
||
### Step 3: Test on NSQ
|
||
|
||
The simplest test is to download `nsq_tail` from [nsq github](https://github.com/nsqio/nsq/releases)
|
||
|
||
```
|
||
./nsq_tail -nsqd-tcp-address 127.0.0.1:4150 -topic minio
|
||
```
|
||
|
||
Open another terminal and upload a JPEG image into `images` bucket.
|
||
|
||
```
|
||
mc cp gopher.jpg myminio/images
|
||
```
|
||
|
||
You should receive the following event notification via NSQ once the upload completes.
|
||
|
||
```
|
||
{"EventName":"s3:ObjectCreated:Put","Key":"images/gopher.jpg","Records":[{"eventVersion":"2.0","eventSource":"minio:s3","awsRegion":"","eventTime":"2018-10-31T09:31:11Z","eventName":"s3:ObjectCreated:Put","userIdentity":{"principalId":"21EJ9HYV110O8NVX2VMS"},"requestParameters":{"sourceIPAddress":"10.1.1.1"},"responseElements":{"x-amz-request-id":"1562A792DAA53426","x-minio-origin-endpoint":"http://10.0.3.1:9000"},"s3":{"s3SchemaVersion":"1.0","configurationId":"Config","bucket":{"name":"images","ownerIdentity":{"principalId":"21EJ9HYV110O8NVX2VMS"},"arn":"arn:aws:s3:::images"},"object":{"key":"gopher.jpg","size":162023,"eTag":"5337769ffa594e742408ad3f30713cd7","contentType":"image/jpeg","userMetadata":{"content-type":"image/jpeg"},"versionId":"1","sequencer":"1562A792DAA53426"}},"source":{"host":"","port":"","userAgent":"MinIO (linux; amd64) minio-go/v6.0.8 mc/DEVELOPMENT.GOGET"}}]}
|
||
```
|