Ory Oathkeeper can be configured via environment variables. The environment variables take precedence over config file values. Nested paths get mapped to config values by putting an underscore

_

between every level. For example,

selfservice.flows.settings.ui_url

becomes

SELFSERVICE_FLOWS_SETTINGS_UI_URL=<value>

. Here's an example of how you can set an environment variable in a Unix-like system:

bash export SELFSERVICE_FLOWS_SETTINGS_UI_URL=<value>

In a Windows CMD, you can set an environment variable like this:

cmd set SELFSERVICE_FLOWS_SETTINGS_UI_URL=<value>

And in Windows Powershell:

powershell $Env:SELFSERVICE_FLOWS_SETTINGS_UI_URL = "<value>"

Please replace

<value>

with the actual value you want to set for the environment variable. For more information, you can refer to the [Ory documentation](https://www.ory.sh/docs/kratos/configuring) on configuring Ory Kratos, which also applies to Ory Oathkeeper.

In your Ory Oathkeeper configuration file (

config.yaml

), you can specify various settings such as the ports for the proxy and API, access rules, error handlers, mutators, authorizers, and authenticators. Here's an example of what you might put in your

config.yaml

file:

yaml serve:    proxy:     port: 4455 # run the proxy at port 4455    api:     port: 4456 # run the api at port 4456      access_rules:    repositories:    - file:///rules.json      errors:    fallback:    - json    handlers:     json:      enabled: true      config:       verbose: true     redirect:      enabled: true      config:       to: <https://www.ory.sh/docs>      mutators:    header:     enabled: true     config:      headers:       X-User: "{{ print .Subject }}"    noop:     enabled: true    id_token:     enabled: true     config:      issuer_url: <http://localhost:4455/>      jwks_url: file:///jwks.json      authorizers:    allow:     enabled: true    deny:     enabled: true      authenticators:    anonymous:     enabled: true     config:      subject: guest

This configuration file will run the proxy at port 4455, the API at port 4456, and enable the anonymous authenticator, the allow and deny authorizers, and the noop and id_token mutators. For more information, you can refer to the [Ory Oathkeeper configuration documentation](https://www.ory.sh/docs/oathkeeper/configure-deploy#configure).

In the Ory Oathkeeper configuration file (

config.yaml

), you can't directly implement environment variables. The configuration file is meant to hold static configuration values. However, you can use environment variables to override these static values when you run your application. Here's an example of how you can set an environment variable in a Unix-like system:

bash export ORY_OATHKEEPER_PROXY_PORT=4455

In a Windows CMD, you can set an environment variable like this:

cmd set ORY_OATHKEEPER_PROXY_PORT=4455

And in Windows Powershell:

powershell $Env:ORY_OATHKEEPER_PROXY_PORT = "4455"

In this example,

ORY_OATHKEEPER_PROXY_PORT

corresponds to the

serve.proxy.port

setting in the

config.yaml

file. The environment variable takes precedence over the value in the configuration file. For more information, you can refer to the [Ory documentation](https://www.ory.sh/docs/oathkeeper/cli/oathkeeper-serve#configuration) on configuring Ory Oathkeeper.