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AppSignal Elixir configuration options

The following list includes all configuration options with the name of the environment variable and the name of the key in the configuration file.


  • Value: Boolean true/false. Default: false

Whether AppSignal is active for this environment, can be true or false.


  • Value: String

Name of your application as it should be displayed on


  • Value: Boolean true/false. Default: false

Enable debug logging, this is usually only needed on request from support.

APPSIGNAL_ENABLE_HOST_METRICS / :enable_host_metrics

  • Value: Boolean true/false. Default: true

Set this to false to disable host metrics.


  • Value: String. Default: :dev

The AppSignal environment in which the configuration is stored.

Other valid values are :test and :prod.

This environment variable name for this config was renamed from APPSIGNAL_ENVIRONMENT to APPSIGNAL_APP_ENV after version 0.9.2.


  • Value: Array. Default: []

List of parameter keys that should be ignored using AppSignal filtering. Their values will be replaced with FILTERED when transmitted to AppSignal. You can configure this with a list of keys in the configuration file.


  • Value: String. Default: "".

If you require the agent to connect to the Internet via a proxy set the complete proxy URL in this configuration key.


  • Value: Array. Default: [].

List of actions that will be ignored, everything that happens including exceptions will not be transmitted to AppSignal.


  • Value: Array. Default: [].

List of error classes that will be ignored. Any error raised with this error type will not be transmitted to AppSignal.


  • Value: String. Default: /tmp/appsignal.log

Override the location of the path where the AppSignal log file will be written to.


  • Value: String. Default:

Configure the endpoint to send data to AppSignal.

APPSIGNAL_PUSH_API_KEY / :push_api_key

  • Value: String

The Push API key to authenticate with when sending data to AppSignal.

APP_REVISION / :revision

  • Value: String

Version (revision) of your application to register.

APPSIGNAL_RUNNING_IN_CONTAINER / :running_in_container

  • Value: Boolean true/false. Default: false

AppSignal expects to be running on the same machine between different deploys. Set this key to true if you use a container based deployment system such as Docker.

APPSIGNAL_WORKING_DIR_PATH / :working_dir_path

  • Value: String. Default: detected by agent

Override the location where the AppSignal Ruby gem can store temporary files. Use this is if the default location is not suitable.

If you are running multiple applications using AppSignal on the same server, use this configuration option to select different working directories for every AppSignal instance, otherwise the two instances could conflict with one another.

# config/config.exs
config :appsignal, :config,
  working_dir_path: "/tmp/project_1/"

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