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a3e806ed61
This PR adds disk based edge caching support for minio server. Cache settings can be configured in config.json to take list of disk drives, cache expiry in days and file patterns to exclude from cache or via environment variables MINIO_CACHE_DRIVES, MINIO_CACHE_EXCLUDE and MINIO_CACHE_EXPIRY Design assumes that Atime support is enabled and the list of cache drives is fixed. - Objects are cached on both GET and PUT/POST operations. - Expiry is used as hint to evict older entries from cache, or if 80% of cache capacity is filled. - When object storage backend is down, GET, LIST and HEAD operations fetch object seamlessly from cache. Current Limitations - Bucket policies are not cached, so anonymous operations are not supported in offline mode. - Objects are distributed using deterministic hashing among list of cache drives specified.If one or more drives go offline, or cache drive configuration is altered - performance could degrade to linear lookup. Fixes #4026
118 lines
6.4 KiB
Markdown
118 lines
6.4 KiB
Markdown
# Minio Server `config.json` (v22) Guide [](https://slack.minio.io) [](https://goreportcard.com/report/minio/minio) [](https://hub.docker.com/r/minio/minio/) [](https://codecov.io/gh/minio/minio)
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Minio server stores all its configuration data in `${HOME}/.minio/config.json` file by default. Following sections provide detailed explanation of each fields and how to customize them. A complete example of `config.json` is available [here](https://raw.githubusercontent.com/minio/minio/master/docs/config/config.sample.json)
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## Configuration Directory
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The default configuration directory is `${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.
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```sh
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minio server --config-dir /etc/minio /data
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```
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### Certificate Directory
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TLS certificates are stored under ``${HOME}/.minio/certs`` directory. You need to place certificates here to enable `HTTPS` based access. Read more about [How to secure access to Minio server with TLS](http://docs.minio.io/docs/how-to-secure-access-to-minio-server-with-tls).
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Following is the directory structure for Minio server with TLS certificates.
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```sh
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$ tree ~/.minio
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/home/user1/.minio
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├── certs
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│ ├── CAs
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│ ├── private.key
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│ └── public.crt
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└── config.json
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```
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### Configuration Fields
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#### Version
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|Field|Type|Description|
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|``version``|_string_| `version` determines the configuration file format. Any older version will be automatically be migrated to the latest version upon startup. [DO NOT EDIT THIS FIELD MANUALLY]|
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#### Credential
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|Field|Type|Description|
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|``credential``| | Auth credential for object storage and web access.|
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|``credential.accessKey`` | _string_ | Access key of minimum 3 characters in length. You may override this field with `MINIO_ACCESS_KEY` environment variable.|
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|``credential.secretKey`` | _string_ | Secret key of minimum 8 characters in length. You may override this field with `MINIO_SECRET_KEY` environment variable.|
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Example:
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```sh
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export MINIO_ACCESS_KEY=admin
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export MINIO_SECRET_KEY=password
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minio server /data
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```
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#### Region
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|Field|Type|Description|
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|``region``| _string_ | `region` describes the physical location of the server. By default it is set to ``. You may override this field with `MINIO_REGION` environment variable. If you are unsure leave it unset.|
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Example:
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```sh
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export MINIO_REGION="my_region"
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minio server /data
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```
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#### Browser
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|Field|Type|Description|
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|``browser``| _string_ | Enable or disable access to web UI. By default it is set to `on`. You may override this field with ``MINIO_BROWSER`` environment variable.|
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Example:
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```sh
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export MINIO_BROWSER=off
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minio server /data
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```
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### Domain
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|Field|Type|Description|
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|``domain``| _string_ | Enable virtual-host-style requests i.e http://bucket.mydomain.com/object|
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By default, Minio supports path-style requests which look like http://mydomain.com/bucket/object. MINIO_DOMAIN environmental variable (or `domain` in config.json) can be used to enable virtual-host-style requests. If the request `Host` header matches with `(.+).mydomain.com` then the mattched pattern `$1` is used as bucket and the path is used as object. More information on path-style and virtual-host-style [here](http://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAPI.html)
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Example:
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```sh
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export MINIO_DOMAIN=mydomain.com
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minio server /data
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```
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### Storage Class
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|Field|Type|Description|
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|``storageclass``| | Set storage class for configurable data and parity, as per object basis.|
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|``storageclass.standard`` | _string_ | Value for standard storage class. It should be in the format `EC:Parity`, for example to set 4 disk parity for standard storage class objects, set this field to `EC:4`.|
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|``storageclass.rrs`` | _string_ | Value for reduced redundancy storage class. It should be in the format `EC:Parity`, for example to set 3 disk parity for reduced redundancy storage class objects, set this field to `EC:3`.|
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By default, parity for objects with standard storage class is set to `N/2`, and parity for objects with reduced redundancy storage class objects is set to `2`. Read more about storage class support in Minio server [here](https://github.com/minio/minio/blob/master/docs/erasure/storage-class/README.md).
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### Cache
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|Field|Type|Description|
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|``drives``| _[]string_ | List of drives|
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|``exclude`` | _[]string_ | List of wildcard patterns for prefixes to exclude from cache |
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|``expiry`` | _int_ | Days to cache expiry |
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#### Notify
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|Field|Type|Description|
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|``notify``| |Notify enables bucket notification events for lambda computing via the following targets.|
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|``notify.amqp``| |[Configure to publish Minio events via AMQP target.](http://docs.minio.io/docs/minio-bucket-notification-guide#AMQP)|
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|``notify.nats``| |[Configure to publish Minio events via NATS target.](http://docs.minio.io/docs/minio-bucket-notification-guide#NATS)|
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|``notify.elasticsearch``| |[Configure to publish Minio events via Elasticsearch target.](http://docs.minio.io/docs/minio-bucket-notification-guide#Elasticsearch)|
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|``notify.redis``| |[Configure to publish Minio events via Redis target.](http://docs.minio.io/docs/minio-bucket-notification-guide#Redis)|
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|``notify.postgresql``| |[Configure to publish Minio events via PostgreSQL target.](http://docs.minio.io/docs/minio-bucket-notification-guide#PostgreSQL)|
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|``notify.kafka``| |[Configure to publish Minio events via Apache Kafka target.](http://docs.minio.io/docs/minio-bucket-notification-guide#apache-kafka)|
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|``notify.webhook``| |[Configure to publish Minio events via Webhooks target.](http://docs.minio.io/docs/minio-bucket-notification-guide#webhooks)|
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|``notify.mysql``| |[Configure to publish Minio events via MySql target.](https://docs.minio.io/docs/minio-bucket-notification-guide#MySQL)|
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|``notify.mqtt``| |[Configure to publish Minio events via MQTT target.](http://docs.minio.io/docs/minio-bucket-notification-guide#MQTT)|
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## Explore Further
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* [Minio Quickstart Guide](https://docs.minio.io/docs/minio-quickstart-guide)
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