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diun/doc/configuration.md
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Configuration

Overview

There are two different ways to define static configuration options in Diun:

These ways are evaluated in the order listed above.

If no value was provided for a given option, a default value applies. Moreover, if an option has sub-options, and any of these sub-options is not specified, a default value will apply as well.

For example, the DIUN_PROVIDERS_DOCKER environment variable is enough by itself to enable the docker provider, even though sub-options like DIUN_PROVIDERS_DOCKER_ENDPOINT exist. Once positioned, this option sets (and resets) all the default values of the sub-options of DIUN_PROVIDERS_DOCKER.

Configuration file

You can define a configuration file through the option --config with the following content:

db:
  path: diun.db

watch:
  workers: 10
  schedule: "0 * * * *"
  firstCheckNotif: false

notif:
  amqp:
    host: localhost
    port: 5672
    username: guest
    password: guest
    queue: queue
  gotify:
    endpoint: http://gotify.foo.com
    token: Token123456
    priority: 1
    timeout: 10s
  mail:
    host: localhost
    port: 25
    ssl: false
    insecureSkipVerify: false
    from: diun@example.com
    to: webmaster@example.com
  rocketchat:
    endpoint: http://rocket.foo.com:3000
    channel: "#general"
    userID: abcdEFGH012345678
    token: Token123456
    timeout: 10s
  script:
      cmd: "myprogram"
      args:
        - "--anarg"
        - "another"
  slack:
    webhookURL: https://hooks.slack.com/services/ABCD12EFG/HIJK34LMN/01234567890abcdefghij
  teams:
    webhookURL: https://outlook.office.com/webhook/ABCD12EFG/HIJK34LMN/01234567890abcdefghij
  telegram:
    token: aabbccdd:11223344
    chatIDs:
      - 123456789
      - 987654321
  webhook:
    endpoint: http://webhook.foo.com/sd54qad89azd5a
    method: GET
    headers:
      content-type: application/json
      authorization: Token123456
    timeout: 10s

regopts:
  someregistryoptions:
    username: foo
    password: bar
    timeout: 20s
  onemore:
    username: foo2
    password: bar2
    insecureTls: true

providers:
  docker:
    watchStopped: true
  swarm:
    watchByDefault: true
  kubernetes:
    namespaces:
      - default
      - production
  file:
    directory: ./imagesdir

Reference

db

  • path: Path to Bolt database file where images manifests are stored. (default diun.db)

You can also use the following environment variables:

  • DIUN_DB_PATH

watch

  • workers: Maximum number of workers that will execute tasks concurrently. (default 10)
  • schedule: CRON expression to schedule Diun watcher. (default 0 * * * *)
  • firstCheckNotif: Send notification at the very first analysis of an image. (default false)

You can also use the following environment variables:

  • DIUN_WATCH_WORKERS
  • DIUN_WATCH_SCHEDULE
  • DIUN_WATCH_FIRSTCHECKNOTIF

notif

regopts

  • username: Registry username.
  • usernameFile: Use content of secret file as registry username if username not defined.
  • password: Registry password.
  • passwordFile: Use content of secret file as registry password if password not defined.
  • timeout: Timeout is the maximum amount of time for the TCP connection to establish. (default 10s)
  • insecureTls: Allow contacting docker registry over HTTP, or HTTPS with failed TLS verification. (default false)

You can also use the following environment variables:

  • DIUN_REGOPTS_<NAME>_USERNAME
  • DIUN_REGOPTS_<NAME>_USERNAMEFILE
  • DIUN_REGOPTS_<NAME>_PASSWORD
  • DIUN_REGOPTS_<NAME>_PASSWORDFILE
  • DIUN_REGOPTS_<NAME>_TIMEOUT
  • DIUN_REGOPTS_<NAME>_INSECURETLS

providers