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Configuring your environment Setting environment variables for your Mastodon installation.
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30 admin

{{< hint style="warning" >}} This page is under construction. {{< /hint >}}

Mastodon uses environment variables as its configuration.

For convenience, it can read them from a flat file called .env.production in the Mastodon directory, but they can always be overridden by a specific process. For example, systemd service files can read environment variables from an EnvironmentFile or from inline definitions with Environment, so you can have different configuration parameters for specific services. They can also be specified when calling Mastodon from the command line.

Basic

Federation

  • LOCAL_DOMAIN
  • WEB_DOMAIN
  • ALTERNATE_DOMAINS

AUTHORIZED_FETCH

When set to true, Mastodon will stop inline-signing activities, and will require remote servers to authenticate when fetching public and unlisted toots.

This prevents blocked domains from fetching your public toots, at the cost of possibly increased computations, and broken compatibility with software that does not sign fetch requests (such as Mastodon prior to version 3.0).

Note that this mode cannot guarantee that bad actors do not access your public and unlisted toots, it merely makes it a bit more difficult.

WHITELIST_MODE

When set to true, Mastodon will restrict federation to whitelisted servers only, as well as disable public pages and some client APIs. Whitelist mode implies authorized fetch mode.

When switching an existing instance to whitelist mode, the following command should be used to remove any already existent data on non-whitelisted domains:

tootctl domain purge --whitelist-mode

Note that, while introduced in Mastodon 3.0, WHITELIST_MODE is broken on Mastodon 3.0 and 3.0.1.

Secrets

  • SECRET_KEY_BASE
  • OTP_SECRET
  • VAPID_PRIVATE_KEY
  • VAPID_PUBLIC_KEY

Deployment

  • RAILS_ENV
  • RAILS_SERVE_STATIC_FILES
  • RAILS_LOG_LEVEL
  • TRUSTED_PROXY_IP
  • SOCKET
  • PORT
  • NODE_ENV
  • BIND

Scaling options

  • WEB_CONCURRENCY
  • MAX_THREADS
  • PREPARED_STATEMENTS
  • STREAMING_API_BASE_URL
  • STREAMING_CLUSTER_NUM

Database connections

PostgreSQL

  • DB_HOST
  • DB_USER
  • DB_NAME
  • DB_PASS
  • DB_PORT
  • DATABASE_URL

Redis

  • REDIS_HOST
  • REDIS_PORT
  • REDIS_URL
  • REDIS_NAMESPACE
  • CACHE_REDIS_HOST
  • CACHE_REDIS_PORT
  • CACHE_REDIS_URL
  • CACHE_REDIS_NAMESPACE

ElasticSearch

  • ES_ENABLED
  • ES_HOST
  • ES_PORT
  • ES_PREFIX

StatsD

  • STATSD_ADDR
  • STATSD_NAMESPACE

Limits

  • SINGLE_USER_MODE
  • EMAIL_DOMAIN_WHITELIST
  • DEFAULT_LOCALE
  • MAX_SESSION_ACTIVATIONS
  • USER_ACTIVE_DAYS

E-mail

  • SMTP_SERVER
  • SMTP_PORT
  • SMTP_LOGIN
  • SMTP_PASSWORD
  • SMTP_FROM_ADDRESS
  • SMTP_DOMAIN
  • SMTP_DELIVERY_METHOD
  • SMTP_AUTH_METHOD
  • SMTP_CA_FILE
  • SMTP_OPENSSL_VERIFY_MODE
  • SMTP_ENABLE_STARTTLS_AUTO
  • SMTP_TLS

File storage

  • CDN_HOST
  • S3_ALIAS_HOST

Local file storage

  • PAPERCLIP_ROOT_PATH
  • PAPERCLIP_ROOT_URL

Amazon S3 and compatible

  • S3_ENABLED
  • S3_BUCKET
  • AWS_ACCESS_KEY_ID
  • AWS_SECRET_ACCESS_KEY
  • S3_REGION
  • S3_PROTOCOL
  • S3_HOSTNAME
  • S3_ENDPOINT
  • S3_SIGNATURE_VERSION

Swift

  • SWIFT_ENABLED
  • SWIFT_USERNAME
  • SWIFT_TENANT
  • SWIFT_PASSWORD
  • SWIFT_PROJECT_ID
  • SWIFT_AUTH_URL
  • SWIFT_CONTAINER
  • SWIFT_OBJECT_URL
  • SWIFT_REGION
  • SWIFT_DOMAIN_NAME
  • SWIFT_CACHE_TTL

External authentication

  • OAUTH_REDIRECT_AT_SIGN_IN

LDAP

  • LDAP_ENABLED
  • LDAP_HOST
  • LDAP_PORT
  • LDAP_METHOD
  • LDAP_BASE
  • LDAP_BIND_DN
  • LDAP_PASSWORD
  • LDAP_UID
  • LDAP_SEARCH_FILTER

PAM

  • PAM_ENABLED
  • PAM_EMAIL_DOMAIN
  • PAM_DEFAULT_SERVICE
  • PAM_CONTROLLED_SERVICE

CAS

  • CAS_ENABLED
  • CAS_URL
  • CAS_HOST
  • CAS_PORT
  • CAS_SSL
  • CAS_VALIDATE_URL
  • CAS_CALLBACK_URL
  • CAS_LOGOUT_URL
  • CAS_LOGIN_URL
  • CAS_UID_FIELD
  • CAS_CA_PATH
  • CAS_DISABLE_SSL_VERIFICATION
  • CAS_UID_KEY
  • CAS_NAME_KEY
  • CAS_EMAIL_KEY
  • CAS_NICKNAME_KEY
  • CAS_FIRST_NAME_KEY
  • CAS_LAST_NAME_KEY
  • CAS_LOCATION_KEY
  • CAS_IMAGE_KEY
  • CAS_PHONE_KEY

SAML

  • SAML_ENABLED
  • SAML_ACS_URL
  • SAML_ISSUER
  • SAML_IDP_SSO_TARGET_URL
  • SAML_IDP_CERT
  • SAML_IDP_CERT_FINGERPRINT
  • SAML_NAME_IDENTIFIER_FORMAT
  • SAML_CERT
  • SAML_PRIVATE_KEY
  • SAML_SECURITY_WANT_ASSERTION_SIGNED
  • SAML_SECURITY_WANT_ASSERTION_ENCRYPTED
  • SAML_SECURITY_ASSUME_EMAIL_IS_VERIFIED
  • SAML_ATTRIBUTES_STATEMENTS_UID
  • SAML_ATTRIBUTES_STATEMENTS_EMAIL
  • SAML_ATTRIBUTES_STATEMENTS_FULL_NAME
  • SAML_ATTRIBUTES_STATEMENTS_FIRST_NAME
  • SAML_ATTRIBUTES_STATEMENTS_LAST_NAME
  • SAML_UID_ATTRIBUTE
  • SAML_ATTRIBUTES_STATEMENTS_VERIFIED
  • SAML_ATTRIBUTES_STATEMENTS_VERIFIED_EMAIL

Hidden services

  • http_proxy
  • ALLOW_ACCESS_TO_HIDDEN_SERVICE

Other

  • SKIP_POST_DEPLOYMENT_MIGRATIONS