Ansible Role mastodon

This role installs and configures Mastodon, a federated microblogging platform, as Podman containers.

Mandatory Requirements

• Enable the PostgreSQL repository. This can be done using the linuxfabrik.lfops.repo_postgresql role.

• Install the PostgreSQL server. This can be done using the linuxfabrik.lfops.postgresql_server role.

• Create a PostgreSQL user for Mastodon. This can be done using the linuxfabrik.lfops.postgresql_server role.

• Install Redis. This can be done using the linuxfabrik.lfops.repo_remi and linuxfabrik.lfops.redis role.

• Enable the Elasticsearch repository (optional). This can be done using the linuxfabrik.lfops.repo_elasticsearch role.

• Install Elasticsearch (optional). This can be done using the linuxfabrik.lfops.elasticsearch role.

• On RHEL-compatible systems, enable the EPEL repository. This can be done using the linuxfabrik.lfops.repo_epel role.

• Install Apache HTTPd. This can be done using the linuxfabrik.lfops.apache_httpd role.

If you use the „Setup Mastodon“ Playbook, this is automatically done for you (you still have to take care of providing the required versions).

• Make sure the container can access the databases:

# PostgreSQL
postgresql_server__conf_listen_addresses:
  - 'localhost'
  - 'fqdn.example.com' # Allow access from container. Make sure the DNS entry (or /etc/hosts) points to the correct ip (not 127.)

# Redis
redis__conf_bind: 'fqdn.example.com' # Allow access from container. Make sure the DNS entry (or /etc/hosts) points to the correct ip (not 127.)

# Elasticsearch (if needed)
elasticsearch__network_host: 'fqdn.example.com' # Allow access from container. Make sure the DNS entry (or /etc/hosts) points to the correct ip (not 127.)

Optional Requirements

• It is recommended to set Storage=presistent in /etc/systemd/journald.conf to allow the user to use journalctl --user. This can be done using the linuxfabrik.lfops.systemd_journald role.

• If the host should act as a Postfix MTA, make sure it is listening on the IP address so that the container can reach it. This can be done using the linuxfabrik.lfops.postfix role.

Tags

mastodon

• Installs and configures Mastodon.

• Triggers: none.

mastodon:configure

• Deploys Mastodon configuration files.

• Triggers: none.

mastodon:containers

• Deploys Mastodon containers.

• Triggers: none.

mastodon:deploy_search

• Deploys the Elasticsearch indices.

• Triggers: none.

mastodon:users

• Creates Mastodon users.

• Triggers: none.

Mandatory Role Variables

mastodon__active_record_encryption_deterministic_key

• Generate with bundle exec rails db:encryption:init. Changing this will result in data loss and other issues.

• Type: String.

mastodon__active_record_encryption_key_derivation_salt

• Generate with bundle exec rails db:encryption:init. Changing this will result in data loss and other issues.

• Type: String.

mastodon__active_record_encryption_primary_key

• Generate with bundle exec rails db:encryption:init. Changing this will result in data loss and other issues.

• Type: String.

mastodon__domain

• This is the unique identifier of your server in the network. This cannot be safely changed later. It has to be the public domain name the server is running under.

• Type: String.

mastodon__otp_secret

• Generate with bundle exec rails secret. Changing this will break two-factor authentication.

• Type: String.

mastodon__postgresql_login

• The user account for accessing the PostgreSQL database.

• Type: Dictionary.

• Subkeys:

  • username:

    • Mandatory. Username.

    • Type: String.

  • password:

    • Mandatory. Password.

    • Type: String.

  • state:

    • Mandatory. State of the user.

    • Type: String.

mastodon__secret_key_base

• Generate with bundle exec rails secret. Changing this will break all active browser sessions.

• Type: String.

mastodon__vapid_private_key

• Generate with bundle exec rails mastodon:webpush:generate_vapid_key. Changing this will break push notifications.

• Type: String.

mastodon__vapid_public_key

• Generate with bundle exec rails mastodon:webpush:generate_vapid_key. Changing this will break push notifications.

• Type: String.

Note: Secrets can be easily generated without installing Mastodon and Ruby locally by running the bundle commands in a temporary container, e.g. podman run --rm mastodon/mastodon:latest bundle exec rails secret.

Example:

# mandatory
mastodon__active_record_encryption_deterministic_key: 'insecure_DO_NOT_USE_IN_PRODUCTION_Sml8YNpgR5KhSgbuDu2E2Ib2U3S4laEi'
mastodon__active_record_encryption_key_derivation_salt: 'insecure_DO_NOT_USE_IN_PRODUCTION_EnLFYG1GPMQq32Q3SD5ai0FkyxvKsq4h'
mastodon__active_record_encryption_primary_key: 'insecure_DO_NOT_USE_IN_PRODUCTION_NQtf5CQ0ttTfT7qCbxhrbVKqlNTgxIEW'
mastodon__domain: 'example.com'
mastodon__otp_secret: 'insecure_DO_NOT_USE_IN_PRODUCTION_b07d3de935e63a5caa30b687f876e042a6d9f93902aebcfb880fa3ae30449f27df5e8f2dfec6e8a21ad25166a2337b711fb964bdd2389ca4fd06c40bd0cac924'
mastodon__postgresql_login:
  username: 'mastodon'
  password: 'linuxfabrik'
  state: 'present'
mastodon__secret_key_base: 'insecure_DO_NOT_USE_IN_PRODUCTION_565c24702495cfa599cae4a31d843016f020a8548b169500a4eb64eeb8f29745fe02778dd5b7690c84f627f24da24bb3855cc56800a4a752831ce61970561a95'
mastodon__vapid_private_key: 'insecure_DO_NOT_USE_IN_PRODUCTION_06bsp_1VMSn6fsLC41qoV_Qobgk6ptrrpCQkrsxHOAk='
mastodon__vapid_public_key: 'insecure_DO_NOT_USE_IN_PRODUCTION_BIKa90fBBxJ_iXZDYI6lB6lvoIXN_NfZ44wyC-j_QKEPhq-LaPXc0x-E_PKVjsrv0iBhGMcaWbYYHrKLSbN_pHY='

Optional Role Variables

mastodon__container_enabled

• Enables or disables the service, analogous to systemctl enable/disable.

• Type: Bool.

• Default: true

mastodon__container_state

• Changes the state of the service, analogous to systemctl start/stop/restart/reload. Possible options: started, stopped, restarted, reloaded.

• Type: String.

• Default: 'started'

mastodon__elasticsearch_enabled

• Whether Elasticsearch support is enabled.

• Type: Bool.

• Default: true

mastodon__elasticsearch_host

• The host on which Elasticsearch is reachable.

• Type: String.

• Default: 'host.containers.internal'

mastodon__elasticsearch_port

• The port on which Elasticsearch is reachable.

• Type: Number.

• Default: 9200

mastodon__ip_retention_period

• How long Mastodon should retain records of IPs (in seconds). Make sure to modify the scheduling of ip_cleanup_scheduler in config/sidekiq.yml to be less than daily if you lower this below two days (172800).

• Type: Number.

• Default: 31556952

mastodon__ldap_base

• The base distinguised name for the LDAP search.

• Type: String.

• Default: ''

mastodon__ldap_bind_dn

• The bind distinguished name to authenticate against the LDAP server.

• Type: String.

• Default: ''

mastodon__ldap_enabled

• Whether to enable the LDAP integration.

• Type: Bool.

• Default: false

mastodon__ldap_host

• The host on which LDAP is reachable.

• Type: String.

• Default: ''

mastodon__ldap_mail

• The LDAP attribute which Mastodon should use as the account e-mail address.

• Type: String.

• Default: 'mail'

mastodon__ldap_method

• The method to connect to the LDAP server. Possible options: 'start_tls', 'simple_tls'.

• Type: String.

• Default: 'start_tls'

mastodon__ldap_password

• The password for the LDAP bind distinguished name.

• Type: String.

• Default: ''

mastodon__ldap_port

• The port on which LDAP is reachable.

• Type: Number.

• Default: 389

mastodon__ldap_search_filter

• LDAP search filter for mapping users. Mastodon %<uid>s with mastodon__ldap_uid, %<mail>s with mastodon__ldap_mail and %s<email>s with the e-mail address to look up.

• Type: String.

• Default: '(|(%<uid>s=%<email>s)(%<mail>s=%<email>s))'

mastodon__ldap_tls_no_verify

• Whether Mastodon should not verify SSL connections to the LDAP server (e.g. when using self-signed certificates).

• Type: Bool.

• Default: true

mastodon__ldap_uid

• The LDAP attribute which Mastodon should use as the account username.

• Type: String.

• Default: 'uid'

mastodon__ldap_uid_conversion_enabled

• Mastodon does not allow certain characters in usernames. Enable automatic conversion of usernames that do not conform.

• Type: Bool.

• Default: true

mastodon__postgresql_db_name

• The name of the PostgreSQL database.

• Type: String.

• Default: 'mastodon_production'

mastodon__postgresql_host

• The host on which PostgreSQL is reachable.

• Type: String.

• Default: 'host.containers.internal'

mastodon__postgresql_port

• The port on which PostgreSQL is reachable.

• Type: Number.

• Default: 5432

mastodon__redis_host

• The host on which Redis is reachable.

• Type: String.

• Default: 'host.containers.internal'

mastodon__redis_password

• The password for the Redis instance, if authentication is enabled.

• Type: String.

• Default: ''

mastodon__redis_port

• The port on which Redis is reachable.

• Type: Number.

• Default: 6379

mastodon__session_retention_period

• How long Mastodon should retain records of sessions (in seconds).

• Type: Number.

• Default: 31556952

mastodon__smtp_auth_method

• How Mastodon should authenticate against the SMTP server. Possible options: 'none' no authentication, 'plain' authentication with plaintext password, 'login' authentication with base64 encoded password, 'cram_md5'.

• Type: String.

• Default: 'none'

mastodon__smtp_from_address

• The from address Mastodon should use when sending email notifications.

• Type: String.

• Default: ''

mastodon__smtp_login

• The login for the SMTP server Mastodon should use in order to send email notifications.

• Type: String.

• Default: ''

mastodon__smtp_openssl_verify_mode

• How Mastodon should verify/enforce SSL connections to the SMTP server. Possible options: 'none', 'peer', 'client_once', 'fail_if_no_peer_cert'.

• Type: String.

• Default: 'none'

mastodon__smtp_password

• The password for the SMTP server Mastodon should use in order to send email notifications.

• Type: String.

• Default: ''

mastodon__smtp_port

• The port Mastodon should use in order to send email notifications.

• Type: Number.

• Default: 25

mastodon__smtp_server

• The SMTP server Mastodon should use in order to send email notifications.

• Type: String.

• Default: 'host.containers.internal'

mastodon__streaming_port

• The port on which the Mastodon streaming service will be available.

• Type: Number.

• Default: 4000

mastodon__user_home_directory

• The home directory of the user running Mastodon.

• Type: String.

• Default: '/opt/mastodon'

mastodon__users__host_var / mastodon__users__group_var

• A list of dictionaries containing Mastodon users. For the usage in host_vars / group_vars (can only be used in one group at a time).

• Type: List of dictionaries.

• Default: []

• Subkeys:

  • username:

    • Mandatory. The username of the Mastodon user.

    • Type: String.

  • email:

    • Mandatory. The email of the Mastodon user.

    • Type: String.

  • approve:

    • Optional. Approve the user. Otherwise the user may need to be approved manually in the webgui before being able to log in.

    • Type: Bool.

    • Default: false

  • confirm:

    • Optional. Confirm the users email address. No email confirmation message will be sent to the user.

    • Type: Bool.

    • Default: false

  • role:

    • Optional. Role of the user.

    • Type: String.

    • Default: unset

mastodon__version

• Which Mastodon version to install. Have a look at the available releases.

• Type: String.

• Default: 'latest'

mastodon__web_domain

• To install Mastodon on mastodon.example.com in such a way it can serve @alice@example.com, set mastodon__local_domain to example.com and mastodon__web_domain to mastodon.example.com. This also requires additional configuration on the server hosting example.com to redirect requests from https://example.com/.well-known/webfinger to https://mastodon.example.com/.well-known/webfinger.

• Type: String.

• Default: unset

mastodon__web_port

• The port on which the Mastodon web service will be available.

• Type: Number.

• Default: 3000

Example:

# optional
mastodon__container_enabled: true
mastodon__container_state: 'started'
mastodon__elasticsearch_enabled: true
mastodon__elasticsearch_host: 'elasticsearch.example.com'
mastodon__elasticsearch_port: 9200
mastodon__ip_retention_period: 172800
mastodon__ldap_base: 'dc=example,dc=com'
mastodon__ldap_bind_dn: 'uid=freeipa-reader,cn=sysaccounts,cn=etc,dc=example,dc=com'
mastodon__ldap_enabled: true
mastodon__ldap_host: 'id.example.com'
mastodon__ldap_mail: 'mail'
mastodon__ldap_method: 'simple_tls'
mastodon__ldap_password: 'linuxfabrik'
mastodon__ldap_port: 636
mastodon__ldap_search_filter: '(&(|(%<uid>s=%<email>s)(%<mail>s=%<email>s))(objectclass=inetorgperson)(memberof=cn=mastodon_user_group,cn=groups,cn=accounts,dc=example,dc=com))'
mastodon__ldap_tls_no_verify: true
mastodon__ldap_uid: 'uid'
mastodon__ldap_uid_conversion_enabled: false
mastodon__postgresql_db_name: 'mastodon-example'
mastodon__postgresql_host: 'db.example.com'
mastodon__postgresql_port: 5432
mastodon__redis_host: 'redis.example.com'
mastodon__redis_password: 'linuxfabrik'
mastodon__redis_port: 6379
mastodon__session_retention_period: 172800
mastodon__smtp_auth_method: 'login'
mastodon__smtp_from_address: 'noreply@example.com'
mastodon__smtp_login: 'mastodon'
mastodon__smtp_openssl_verify_mode: false
mastodon__smtp_password: 'linuxfabrik'
mastodon__smtp_port: 25
mastodon__smtp_server: 'mail.example.com'
mastodon__streaming_port: 8081
mastodon__user_home_directory: '/opt/Mastodon'
mastodon__users__host_var:
  - name: 'owner'
    email: 'owner@example.com'
    approve: true
    confirm: true
    role: 'Owner'
mastodon__version: 'v4.3.9'
mastodon__web_domain: 'social.example.com'
mastodon__web_port: 8080

License

The Unlicense

Author Information

Linuxfabrik GmbH, Zurich