189 lines
6.0 KiB
Markdown
189 lines
6.0 KiB
Markdown
---
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title: "Server"
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description: "Configuring the Server Settings."
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lead: "Authelia runs an internal webserver. This section describes how to configure and tune this."
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date: 2022-06-15T17:51:47+10:00
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draft: false
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images: []
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menu:
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configuration:
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parent: "miscellaneous"
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weight: 199200
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toc: true
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aliases:
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- /c/server
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- /docs/configuration/server.html
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---
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## Configuration
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```yaml
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server:
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host: 0.0.0.0
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port: 9091
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path: ""
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read_buffer_size: 4096
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write_buffer_size: 4096
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enable_pprof: false
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enable_expvars: false
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disable_healthcheck: false
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tls:
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key: ""
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certificate: ""
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client_certificates: []
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headers:
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csp_template: ""
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```
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## Options
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## host
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{{< confkey type="string" default="0.0.0.0" required="no" >}}
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Defines the address to listen on. See also [port](#port). Should typically be `0.0.0.0` or `127.0.0.1`, the former for
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containerized environments and the later for daemonized environments like init.d and systemd.
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Note: If utilising an IPv6 literal address it must be enclosed by square brackets and quoted:
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```yaml
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host: "[fd00:1111:2222:3333::1]"
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```
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### port
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{{< confkey type="integer" default="9091" required="no" >}}
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Defines the port to listen on. See also [host](#host).
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### path
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{{< confkey type="string " required="no" >}}
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Authelia by default is served from the root `/` location, either via its own domain or subdomain.
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Modifying this setting will allow you to serve Authelia out from a specified base path. Please note
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that currently only a single level path is supported meaning slashes are not allowed, and only
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alphanumeric characters are supported.
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__Example:__
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```yaml
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server:
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path: ""
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```
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*Works for https://auth.example.com/, https://example.com/, etc*.
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__Example:__
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```yaml
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server:
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path: authelia
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```
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*Works for https://auth.example.com/authelia/, https://example.com/authelia/, etc*.
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### asset_path
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{{< confkey type="string " required="no" >}}
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Authelia by default serves all static assets from an embedded filesystem in the Go binary.
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Modifying this setting will allow you to override and serve specific assets for Authelia from a specified path. All
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assets that can be overridden must be placed in the `asset_path`. The structure of this directory and the assets which
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can be overriden is documented in the
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[Sever Asset Overrides Reference Guide](../../reference/guides/server-asset-overrides.md).
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### read_buffer_size
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{{< confkey type="integer " default="4096" required="no" >}}
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Configures the maximum request size. The default of 4096 is generally sufficient for most use cases.
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### write_buffer_size
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{{< confkey type="integer " default="4096" required="no" >}}
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Configures the maximum response size. The default of 4096 is generally sufficient for most use cases.
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### enable_pprof
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{{< confkey type="boolean" default="false" required="no" >}}
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Enables the go pprof endpoints.
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### enable_expvars
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{{< confkey type="boolean" default="false" required="no" >}}
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Enables the go expvars endpoints.
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### disable_healthcheck
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{{< confkey type="boolean" default="false" required="no" >}}
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On startup Authelia checks for the existence of /app/healthcheck.sh and /app/.healthcheck.env and if both of these exist
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it writes the configuration vars for the healthcheck to the /app/.healthcheck.env file. In instances where this is not
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desirable it's possible to disable these interactions entirely.
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An example situation where this is the case is in Kubernetes when set security policies that prevent writing to the
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ephemeral storage of a container or just don't want to enable the internal health check.
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### tls
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Authelia typically listens for plain unencrypted connections. This is by design as most environments allow to
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security on lower areas of the OSI model. However it required, if you specify both the [tls key](#key) and
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[tls certificate](#certificate) options, Authelia will listen for TLS connections.
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The key must be generated by the administrator and can be done by following the
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[Generating an RSA Self Signed Certificate](../miscellaneous/guides.md#generating-an-rsa-self-signed-certificate)
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guide provided a self-signed certificate is fit for purpose. If a self-signed certificate is fit for purpose is beyond
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the scope of the documentation and if it is not fit for purpose we instead recommend generating a certificate signing
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request or obtaining a certificate signed by one of the many ACME certificate providers. Methods to achieve this are
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beyond the scope of this guide.
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#### key
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{{< confkey type="string" required="situational" >}}
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The path to the private key for TLS connections. Must be in DER base64/PEM format.
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#### certificate
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{{< confkey type="string" required="situational" >}}
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The path to the public certificate for TLS connections. Must be in DER base64/PEM format.
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#### client_certificates
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{{< confkey type="list(string)" required="situational" >}}
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The list of file paths to certificates used for authenticating clients. Those certificates can be root
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or intermediate certificates. If no item is provided mutual TLS is disabled.
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### headers
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#### csp_template
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{{< confkey type="string" required="no" >}}
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This customizes the value of the Content-Security-Policy header. It will replace all instances of `${NONCE}` with the
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nonce value of the Authelia react bundle. This is an advanced option to customize and you should do sufficient research
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about how browsers utilize and understand this header before attempting to customize it.
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For example, the default CSP template is `default-src 'self'; object-src 'none'; style-src 'self' 'nonce-${NONCE}'`.
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## Additional Notes
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### Buffer Sizes
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The read and write buffer sizes generally should be the same. This is because when Authelia verifies
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if the user is authorized to visit a URL, it also sends back nearly the same size response as the request. However
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you're able to tune these individually depending on your needs.
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### Asset Overrides
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If replacing the Logo for your Authelia portal it is recommended to upload a transparent PNG of your desired logo.
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Authelia will automatically resize the logo to an appropriate size to present in the frontend.
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