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Update documentation to show how to update minio config fields (#6301) 

- with recent commit 1fb2e9ef95, config
can no longer be updated by editing config.json. This is because config
has been migrated inside the minio backend. Update documentation on
how to set/get configuration using mc admin config command.
This commit is contained in:
poornas 2018-08-20 13:37:10 -07:00 committed by kannappanr
parent 7d7e21aebb
commit 8b2801bd46
5 changed files with 110 additions and 38 deletions
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112
docs/bucket/notifications/README.md
View File

@ -30,7 +30,7 @@ Install RabbitMQ from [here](https://www.rabbitmq.com/).
### Step 1: Add AMQP endpoint to Minio ### Step 1: Add AMQP endpoint to Minio
The default location of Minio server configuration file is ``~/.minio/config.json``. The AMQP configuration is located in the `amqp` key under the `notify` 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. The Minio server configuration file is stored on the backend in json format. The AMQP configuration is located in the `amqp` key under the `notify` 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.
| Parameter | Type | Description | | Parameter | Type | Description |
|:---|:---|:---| |:---|:---|:---|
@ -67,9 +67,14 @@ An example configuration for RabbitMQ is shown below:
} }
} }
``` ```
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment in json format, and save it locally.
After updating the configuration file, 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. ```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
After updating the AMQP configuration in /tmp/myconfig , 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.
```sh
$ mc admin config set myminio < /tmp/myconfig
```
Minio supports all the exchanges available in [RabbitMQ](https://www.rabbitmq.com/). For this setup, we are using ``fanout`` exchange. Minio supports all the exchanges available in [RabbitMQ](https://www.rabbitmq.com/). For this setup, we are using ``fanout`` exchange.
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. 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.
@ -145,7 +150,7 @@ Install an MQTT Broker from [here](https://mosquitto.org/).
### Step 1: Add MQTT endpoint to Minio ### Step 1: Add MQTT endpoint to Minio
the default location of Minio server configuration file is ``~./minio/config.json``. The MQTT configuration is location in the `mqtt` key under the `notify` top-level 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. The Minio server configuration file is stored on the backend in json format. The MQTT configuration is located in the `mqtt` key under the `notify` top-level 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.
| Parameter | Type | Description | | Parameter | Type | Description |
@ -173,8 +178,14 @@ An example configuration for MQTT is shown below:
} }
} }
``` ```
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment in json format, and save it locally.
After updating the configuration file, restart the Minio sever 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. ```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
After updating the MQTT configuration in /tmp/myconfig , 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.
```sh
$ mc admin config set myminio < /tmp/myconfig
```
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. 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.
@ -257,7 +268,7 @@ Minio requires a 5.x series version of Elasticsearch. This is the latest major r
### Step 2: Add Elasticsearch endpoint to Minio ### Step 2: Add Elasticsearch endpoint to Minio
The default location of Minio server configuration file is ``~/.minio/config.json``. The Elasticsearch configuration is located in the `elasticsearch` key under the `notify` top-level 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. The Minio server configuration file is stored on the backend in json format. The Elasticsearch configuration is located in the `elasticsearch` key under the `notify` top-level 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.
| Parameter | Type | Description | | Parameter | Type | Description |
|:---|:---|:---| |:---|:---|:---|
@ -281,7 +292,14 @@ An example of Elasticsearch configuration is as follows:
If Elasticsearch has authentication enabled, the credentials can be supplied to Minio via the `url` parameter formatted as `PROTO://USERNAME:PASSWORD@ELASTICSEARCH_HOST:PORT`. If Elasticsearch has authentication enabled, the credentials can be supplied to Minio via the `url` parameter formatted as `PROTO://USERNAME:PASSWORD@ELASTICSEARCH_HOST:PORT`.
After updating the configuration file, 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. To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment in json format, and save it locally.
```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
After updating the Elasticsearch configuration in /tmp/myconfig , 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 < /tmp/myconfig
```
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. 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.
@ -397,7 +415,7 @@ The steps below show how to use this notification target in `namespace` and `acc
### Step 1: Add Redis endpoint to Minio ### Step 1: Add Redis endpoint to Minio
The default location of Minio server configuration file is ``~/.minio/config.json``. 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. 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.
| Parameter | Type | Description | | Parameter | Type | Description |
|:---|:---|:---| |:---|:---|:---|
@ -419,8 +437,14 @@ An example of Redis configuration is as follows:
} }
} }
``` ```
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment in json format, and save it locally.
After updating the configuration file, 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 get myminio/ > /tmp/myconfig
```
After updating the Redis configuration in /tmp/myconfig , 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 < /tmp/myconfig
```
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. 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.
@ -475,7 +499,7 @@ Install NATS from [here](http://nats.io/).
### Step 1: Add NATS endpoint to Minio ### Step 1: Add NATS endpoint to Minio
The default location of Minio server configuration file is ``~/.minio/config.json``. Update the NATS configuration block in ``config.json`` as follows: The NATS configuration block in ``config.json`` is as follows:
``` ```
"nats": { "nats": {
@ -498,9 +522,14 @@ The default location of Minio server configuration file is ``~/.minio/config.jso
} }
}, },
``` ```
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment in json format, and save it locally.
Restart Minio server to reflect config changes. ``bucketevents`` is the subject used by NATS in this example. ```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
After updating the NATS configuration in /tmp/myconfig , 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 < /tmp/myconfig
```
Minio server also supports [NATS Streaming mode](http://nats.io/documentation/streaming/nats-streaming-intro/) that offers additional functionality like `Message/event persistence`, `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: Minio server also supports [NATS Streaming mode](http://nats.io/documentation/streaming/nats-streaming-intro/) that offers additional functionality like `Message/event persistence`, `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:
``` ```
@ -658,7 +687,7 @@ Minio requires PostgreSQL version 9.5 or above. Minio uses the [`INSERT ON CONFL
### Step 2: Add PostgreSQL endpoint to Minio ### Step 2: Add PostgreSQL endpoint to Minio
The default location of Minio server configuration file is ``~/.minio/config.json``. The PostgreSQL configuration is located in the `postgresql` key under the `notify` top-level 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. The Minio server configuration file is stored on the backend in json format. The PostgreSQL configuration is located in the `postgresql` key under the `notify` top-level 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.
| Parameter | Type | Description | | Parameter | Type | Description |
|:---|:---|:---| |:---|:---|:---|
@ -691,9 +720,14 @@ An example of PostgreSQL configuration is as follows:
``` ```
Note that for illustration here, we have disabled SSL. In the interest of security, for production this is not recommended. 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 file for the minio deployment in json format, and save it locally.
After updating the configuration file, 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 get myminio/ > /tmp/myconfig
```
After updating the Postgres configuration in /tmp/myconfig , 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 < /tmp/myconfig
```
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. 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.
@ -755,7 +789,7 @@ Minio requires MySQL version 5.7.8 or above. Minio uses the [JSON](https://dev.m
### Step 2: Add MySQL server endpoint configuration to Minio ### Step 2: Add MySQL server endpoint configuration to Minio
The default location of Minio server configuration file is ``~/.minio/config.json``. The MySQL configuration is located in the `mysql` key under the `notify` top-level 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. The Minio server configuration file is stored on the backend in json format. The MySQL configuration is located in the `mysql` key under the `notify` top-level 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.
| Parameter | Type | Description | | Parameter | Type | Description |
|:---|:---|:---| |:---|:---|:---|
@ -785,9 +819,14 @@ An example of MySQL configuration is as follows:
} }
} }
``` ```
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment in json format, and save it locally.
After updating the configuration file, restart the Minio server to put the changes into effect. The server will print a line like `SQS ARNs: arn:minio:sqs::1:mysql` at start-up if there were no errors. ```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
After updating the MySQL configuration in /tmp/myconfig , 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:mysql` at start-up if there were no errors.
```sh
$ mc admin config set myminio < /tmp/myconfig
```
Note that, you can add as many MySQL server endpoint configurations as needed by providing an identifier (like "1" in the example above) for the MySQL instance and an object of per-server configuration parameters. Note that, you can add as many MySQL server endpoint configurations as needed by providing an identifier (like "1" in the example above) for the MySQL instance and an object of per-server configuration parameters.
@ -842,7 +881,7 @@ Minio requires Kafka version 0.10 or 0.9. Internally Minio uses the [Shopify/sar
### Step 2: Add Kafka endpoint to Minio ### Step 2: Add Kafka endpoint to Minio
The default location of Minio server configuration file is ``~/.minio/config.json``. Update the kafka configuration block in ``config.json`` as follows: The Minio server configuration file is stored on the backend in json format. Update the kafka configuration block in ``config.json`` as follows:
``` ```
"kafka": { "kafka": {
@ -853,9 +892,14 @@ The default location of Minio server configuration file is ``~/.minio/config.jso
} }
} }
``` ```
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment in json format, and save it locally.
Restart Minio server to reflect config changes. ``bucketevents`` is the topic used by kafka in this example. ```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
After updating the Kafka configuration in /tmp/myconfig , 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 < /tmp/myconfig
```
### Step 3: Enable bucket notification using Minio client ### 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. 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.
@ -895,7 +939,7 @@ kafkacat -b localhost:9092 -t bucketevents
### Step 1: Add Webhook endpoint to Minio ### Step 1: Add Webhook endpoint to Minio
The default location of Minio server configuration file is ``~/.minio/config.json``. Update the Webhook configuration block in ``config.json`` as follows The Minio server configuration file is stored on the backend in json format. Update the Webhook configuration block in ``config.json`` as follows
``` ```
"webhook": { "webhook": {
@ -904,8 +948,14 @@ The default location of Minio server configuration file is ``~/.minio/config.jso
"endpoint": "http://localhost:3000/" "endpoint": "http://localhost:3000/"
} }
``` ```
Here the endpoint is the server listening for webhook notifications. Save the file 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. To update the configuration, use `mc admin config get` command to get the current configuration file for the minio deployment in json format, and save it locally.
```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
After updating the webhook configuration in /tmp/myconfig , 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 file 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 < /tmp/myconfig
```
### Step 2: Enable bucket notification using Minio client ### 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. 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.

22
docs/config/README.md
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@ -1,9 +1,11 @@
# Minio Server `config.json` (v23) Guide [![Slack](https://slack.minio.io/slack?type=svg)](https://slack.minio.io) [![Go Report Card](https://goreportcard.com/badge/minio/minio)](https://goreportcard.com/report/minio/minio) [![Docker Pulls](https://img.shields.io/docker/pulls/minio/minio.svg?maxAge=604800)](https://hub.docker.com/r/minio/minio/) [![codecov](https://codecov.io/gh/minio/minio/branch/master/graph/badge.svg)](https://codecov.io/gh/minio/minio) # Minio Server `config.json` (v27) Guide [![Slack](https://slack.minio.io/slack?type=svg)](https://slack.minio.io) [![Go Report Card](https://goreportcard.com/badge/minio/minio)](https://goreportcard.com/report/minio/minio) [![Docker Pulls](https://img.shields.io/docker/pulls/minio/minio.svg?maxAge=604800)](https://hub.docker.com/r/minio/minio/) [![codecov](https://codecov.io/gh/minio/minio/branch/master/graph/badge.svg)](https://codecov.io/gh/minio/minio)
Minio server stores all its configuration data in `${HOME}/.minio/config.json` file by default. Following sections provide detailed explanation of each fields and how to customize them. A complete example of `config.json` is available [here](https://raw.githubusercontent.com/minio/minio/master/docs/config/config.sample.json) Minio server stored all its configuration data in `${HOME}/.minio/config.json` file by default.For all releases beyond minio.RELEASE.2017-08-05T00-00-53Z, the configuration data will be migrated to the Minio's backend directory. All configuration changes can be made using [`mc admin config` get/set commands](https://github.com/minio/mc/blob/master/docs/minio-admin-complete-guide.md). Following sections provide detailed explanation of each fields and how to customize them. A complete example of `config.json` is available [here](https://raw.githubusercontent.com/minio/minio/master/docs/config/config.sample.json)
## Configuration Directory ## Configuration Directory
The default configuration directory is `${HOME}/.minio`. You can override the default configuration directory using `--config-dir` command-line option. Minio server generates a new `config.json` with auto-generated access credentials when its started for the first time. The default configuration directory is `${HOME}/.minio`. Till the release `RELEASE.2018-08-02T23-11-36Z` , Minio server configuration file (`config.json`) was stored in the configuration directory. However for releases beyond `RELEASE.2018-08-18T03-49-57Z`, the configuration file (only), has been migrated to the backend storage directory.
You can override the default configuration directory using `--config-dir` command-line option. Please note that this won't have an effect on the `config.json` file as it is always stored on the backend storage, along with data. Minio server generates a new `config.json` with auto-generated access credentials when its started for the first time.
```sh ```sh
minio server --config-dir /etc/minio /data minio server --config-dir /etc/minio /data
@ -21,10 +23,22 @@ $ tree ~/.minio
│   ├── CAs │   ├── CAs
│   ├── private.key │   ├── private.key
│   └── public.crt │   └── public.crt
└── config.json
``` ```
### Configuration Fields ### Configuration Fields
#### Editing Configuration Fields
For releases after minio.RELEASE.2017-08-05T00-00-53Z, configuration changes can be done using [mc]((https://docs.minio.io/docs/minio-client-quickstart-guide))
##### Get current configuration for Minio deployment
```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
##### Set current configuration for Minio deployment
```sh
$ mc admin config set myminio < /tmp/myconfig
```
The `mc admin` config API will evolve soon to be able to configure specific fields using get/set commands.
#### Version #### Version
|Field|Type|Description| |Field|Type|Description|
|:---|:---|:---| |:---|:---|:---|

2
docs/config/config.sample.json
View File

@ -1,5 +1,5 @@
{ {
"version": "26", "version": "28",
"credential": { "credential": {
"accessKey": "USWUXHGYZQYFYFFIT3RE", "accessKey": "USWUXHGYZQYFYFFIT3RE",
"secretKey": "MOJRH0mkL1IPauahWITSVvyDrQbEEIwljvmxdq03" "secretKey": "MOJRH0mkL1IPauahWITSVvyDrQbEEIwljvmxdq03"

8
docs/disk-caching/README.md
View File

@ -22,6 +22,14 @@ Disk caching can be enabled by updating the `cache` config settings for Minio se
}, },
``` ```
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio cluster in json format, and save it locally.
```sh
$ mc admin config get myminio/ > /tmp/myconfig
```
After updating the cache configuration in /tmp/myconfig , use `mc admin config set` command to update the configuration for the cluster.Restart the Minio server to put the changes into effect.
```sh
$ mc admin config set myminio < /tmp/myconfig
```
The cache settings may also be set through environment variables. When set, environment variables override any `cache` config settings for Minio server. Following example uses `/mnt/drive1`, `/mnt/drive2` ,`/mnt/cache1` ... `/mnt/cache3` for caching, with expiry upto 90 days while excluding all objects under bucket `mybucket` and all objects with '.pdf' as extension while starting a standalone erasure coded setup. Cache max usage is restricted to 80% of disk capacity in this example. The cache settings may also be set through environment variables. When set, environment variables override any `cache` config settings for Minio server. Following example uses `/mnt/drive1`, `/mnt/drive2` ,`/mnt/cache1` ... `/mnt/cache3` for caching, with expiry upto 90 days while excluding all objects under bucket `mybucket` and all objects with '.pdf' as extension while starting a standalone erasure coded setup. Cache max usage is restricted to 80% of disk capacity in this example.
```bash ```bash

4
docs/erasure/storage-class/README.md
View File

@ -72,12 +72,12 @@ export MINIO_STORAGE_CLASS_STANDARD=EC:3
export MINIO_STORAGE_CLASS_RRS=EC:2 export MINIO_STORAGE_CLASS_RRS=EC:2
``` ```
Storage class can also be set via `config.json` file. Refer [storage class](https://github.com/minio/minio/tree/master/docs/config#storage-class) for Storage class can also be set via `mc admin config` get/set commands to update the configuration. Refer [storage class](https://github.com/minio/minio/tree/master/docs/config#storage-class) for
more details. more details.
*Note* *Note*
- If `STANDARD` storage class is set via environment variables or `config.json` files, and `x-amz-storage-class` is not present in request metadata, Minio server will - If `STANDARD` storage class is set via environment variables or `mc admin config` get/set commands, and `x-amz-storage-class` is not present in request metadata, Minio server will
apply `STANDARD` storage class to the object. This means the data and parity disks will be used as set in `STANDARD` storage class. apply `STANDARD` storage class to the object. This means the data and parity disks will be used as set in `STANDARD` storage class.
- If storage class is not defined before starting Minio server, and subsequent PutObject metadata field has `x-amz-storage-class` present - If storage class is not defined before starting Minio server, and subsequent PutObject metadata field has `x-amz-storage-class` present