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# Minio Server `config.json` (v18) 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
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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 5 to 20 characters in length. You may override this field with `MINIO_ACCESS_KEY` environment variable.|
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|``credential.secretKey`` | _string_ | Secret key of 8 to 40 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 ~/Photos
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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 `us-east-1`, which is same as AWS S3's default region. 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 ~/Photos
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```
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#### Browser
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|Field|Type|Description|
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|:---|:---|:---|
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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 ~/Photos
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```
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#### Logger
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|Field|Type|Description|
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|``logger ``| |Server logs errors and fatal messages via logger. You may enable one or more loggers at the same time.|
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|``logger.console``| |Send log messages to console.|
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|``logger.console.enable``| _bool_ | Enable or disable console logger. Default is set to _true_.|
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|``logger.file``| |Send log message to a file.|
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|``logger.file.enable``| _bool_ | Enable or disable file logger. Default is set to _false_.|
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|``logger.file.filename``| _string_ | Path and name of the log file. Example: _/var/log/minio.log_ |
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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.mqtt``| |[Configure to publish Minio events via MQTT target.](http://docs.minio.io/docs/minio-bucket-notification-guide#MQTT)|
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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.nats``| |[Configure to publish Minio events via NATS target.](http://docs.minio.io/docs/minio-bucket-notification-guide#NATS)|
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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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## Explore Further
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* [Minio Quickstart Guide](https://docs.minio.io/docs/minio-quickstart-guide)
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