Thomas
49d0f1a141
* docs: explain Podman socket setup * docs: clarify Podman runtime requirements * docs: complete Podman compose examples
115 lines
5.7 KiB
Plaintext
115 lines
5.7 KiB
Plaintext
---
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title: Environment variables
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tags:
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- Configuration
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- Docker
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- Advanced
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- Env
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- Environment variables
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- Variables
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- Database
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- Redis
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- Secrets
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---
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Homarr offers a few environment variables, which can be used to configure the container.
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:::info
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With docker you can add the `_FILE` suffix to any environment variable, which will read the value from a file.
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This is especially useful for [docker secrets](https://docs.docker.com/engine/swarm/secrets/#use-secrets-in-compose).
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:::
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## General
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:::warning
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Using the `PUID` and `PGID` will require you to set the correct permissions on the mounted volumes and if used the docker socket. See more in the [Running as a different user](/docs/advanced/running-as-different-user) documentation.
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:::
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| Environment Variable | Description | Possible values | Default |
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| ------------------------ | ----------- | --------------- | ------- |
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| ``PUID`` | User ID to run the container as | Any valid user ID | ``0`` |
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| ``PGID`` | Group ID to run the container as | Any valid group ID | ``0`` |
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| ``LOG_LEVEL`` | Log level to use | ``debug`` / ``info`` / ``warn`` / ``error`` | ``info`` |
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| ``NO_EXTERNAL_CONNECTION`` | Disables some requests that need internet connection | `true` or `false` | `false` |
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| ``ENABLE_DNS_CACHING`` | Enables dns caching. Enabled by default, but if you experience issues with IPv6 or static IPs, see [#4006](https://github.com/homarr-labs/homarr/issues/4006) or disable this flag | `true` or `false` | `true` |
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## Authentication
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See [Single Sign-On](/docs/advanced/single-sign-on) for more informations.
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## Security
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The `SECRET_ENCRYPTION_KEY` is required. If none is specified before starting the container, a random key will be shown in the error message and the container will exit.
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| Environment Variable | Description | Possible values | Default |
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| ------------------------ | ----------- | --------------- | ------- |
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| ``SECRET_ENCRYPTION_KEY`` | Secret used to encrypt secrets in database. | 64 character hex string | - |
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:::info
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A random secret can be generated by using the following command: `openssl rand -hex 32`
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:::
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## Docker
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| Environment Variable | Description | Possible values | Default |
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| ------------------------ | ----------- | --------------- | ------- |
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| ``DOCKER_HOSTNAMES`` | Comma-separated list of hostnames to connect to | For example `localhost,docker.example.com` | - |
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| ``DOCKER_PORTS`` | Comma-separated list of ports to connect to | For example `2375,2376` | - |
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| ``DOCKER_SOCKET_PATHS`` | Comma-separated list of mounted Docker-compatible socket paths. See the [Docker and Podman integration guide](/docs/integrations/docker) | For example `/var/run/docker.sock,/var/run/podman.sock` | - |
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## Database
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| Environment Variable | Description | Possible values | Default |
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| ------------------------ | ----------- | --------------- | ------- |
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| ``DB_DRIVER`` | Database driver to use. Currently `better-sqlite3` is used for sqlite, `mysql2` for mysql and `node-postgres` for postgresql | ``better-sqlite3`` / ``mysql2`` / ``node-postgres`` | ``better-sqlite3`` |
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| ``DB_DIALECT`` | Database dialect to use. | ``sqlite`` / ``mysql`` / ``postgresql`` | ``sqlite`` |
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| ``DB_URL`` | Database URL to connect to. | Any valid database URL | ``/appdata/db/db.sqlite`` |
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| ``DB_HOST`` | Database host to connect to. | Any valid database host | - |
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| ``DB_PORT`` | Database port to connect to. | Any valid database port | - |
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| ``DB_NAME`` | Database name to connect to. | Any valid database name | - |
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| ``DB_USER`` | Database user to connect with. | Any valid database user | - |
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| ``DB_PASSWORD`` | Database password to connect with. | Any valid database password | - |
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You can either use the url or host, port, name and credentials combined. The URL will be prioritized over the other values.
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## Redis
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By default Redis is running within the installation. (for example in Docker).
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However for example for K8s it can be useful to use an external Redis instance.
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:::note
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External redis is currently not supported with Proxmox Community Scripts
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:::
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| Environment Variable | Description | Possible values | Default |
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| ------------------------ | ----------- | --------------- | ------- |
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| `REDIS_IS_EXTERNAL` | Whether Redis is running externally. | `true` / `false` | `false` |
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| `REDIS_HOST` | Hostname of the Redis instance. | Any valid hostname | - |
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| `REDIS_PORT` | Port of the Redis instance. | Any valid port | `6379` |
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| `REDIS_USERNAME` | Username to connect to the Redis instance. | Any valid username | - |
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| `REDIS_PASSWORD` | Password to connect to the Redis instance. | Any valid password | - |
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| `REDIS_DATABASE_INDEX` | Select which database of your redis instance should be used. | Any numeric index | - |
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| `REDIS_TLS_CA` | CA certificate for Redis TLS connections. If a certificate is specified the connection will use TLS. | Any valid CA certificate | - |
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## Proxy
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| Environment Variable | Description | Possible values | Default |
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| ------------------------ | ----------- | --------------- | ------- |
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| ``HTTP_PROXY`` | HTTP proxy to use | Any valid HTTP proxy URL | - |
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| ``HTTPS_PROXY`` | HTTPS proxy to use | Any valid HTTPS proxy URL | - |
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| ``NO_PROXY`` | Comma separated list of hosts that should be excluded from proxying | Any valid hostnames | - |
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## Advanced deployments
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:::warning
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The advanced deployments environment variables should only be used if you know what you are doing.
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:::
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| Environment Variable | Description |
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| ------------------------ | ----------- |
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| ``DB_MIGRATIONS_DISABLED`` | Disable db migrations. For example for helm charts |
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