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Ansible Role: Dokku

Ansible Role

Version: 2019.04.3

This Ansible role helps install Dokku on Debian/Ubuntu variants. Apart from installing Dokku, it also provides various modules that can be used to interface with dokku from your own Ansible playbooks.

Table Of Contents

Requirements

Minimum Ansible Version: 2.2

Platform Requirements

Supported Platforms

  • Ubuntu: trusty
  • Ubuntu: utopic
  • Ubuntu: vivid
  • Ubuntu: wily
  • Ubuntu: xenial
  • Ubuntu: yakkety
  • Ubuntu: zesty
  • Ubuntu: artful
  • Ubuntu: bionic
  • Debian: wheezy
  • Debian: jessie
  • Debian: stretch
  • Debian: buster

Dependencies

  • Dokku version 0.16.1 (for library usage)

Role Variables

docker_apt_key_sig

  • default: 58118E89F3A912897C070ADBF76221572C52609D
  • type: string
  • description: apt.docker repository key signature

docker_apt_key_url

  • default: hkp://p80.pool.sks-keyservers.net:80
  • type: string
  • description: Location to retrieve the apt.docker key

docker_download_key_sig

  • default: 9DC858229FC7DD38854AE2D88D81803C0EBFCD88
  • type: string
  • description: download.docker repository key signature

docker_download_key_url

  • default: https://download.docker.com/linux/ubuntu/gpg
  • type: string
  • description: Location for download.docker key

dokku_daemon_install

  • default: True
  • type: boolean
  • description: Whether to install the dokku-daemon

dokku_daemon_version

  • default: f3b7b0ab1b6368d49e569de03af28e497ce0a0c9
  • type: string
  • description: Version of dokku-daemon to install

dokku_hostname

  • default: dokku.me
  • type: string
  • description: Hostname, used as vhost domain and for showing app URL after deploy

dokku_key_file

  • default: /root/.ssh/id_rsa.pub
  • type: string
  • description: Path on disk to an SSH key to add to the Dokku user (Will be ignored on dpkg-reconfigure)

dokku_manage_nginx

  • default: True
  • type: boolean
  • description: Whether we should manage the 00-default nginx site

dokku_plugins

  • default: {}
  • type: list
  • description: A list of plugins to install. The host must have network access to the install url, and git access if required. Plugins should be specified in the following format:
- name: postgres
  url: https://github.com/dokku/dokku-postgres.git

- name: redis
  url: https://github.com/dokku/dokku-redis.git

dokku_skip_key_file

  • default: false
  • type: string
  • description: Do not check for the existence of the dokku/key_file. Setting this to "true", will require you to manually add an SSH key later on.

dokku_users

  • default: None
  • type: list
  • description: A list of users who should have access to Dokku. This will not grant them generic SSH access, but rather only access as the dokku user. Users should be specified in the following format:
- name: Jane Doe
  username: jane
  ssh_key: JANES_PUBLIC_SSH_KEY
- name: Camilla
  username: camilla
  ssh_key: CAMILLAS_PUBLIC_SSH_KEY

dokku_version

  • default: 0.16.1
  • type: version
  • description: The version of Dokku to install

dokku_vhost_enable

  • default: true
  • type: string
  • description: Use vhost-based deployments (e.g., .dokku.me)

dokku_web_config

  • default: false
  • type: string
  • description: Use web-based config for hostname and keyfile

herokuish_version

  • default: 0.5.0
  • type: version
  • description: The version of herokuish to install

plugn_version

  • default: 0.3.0
  • type: version
  • description: The version of plugn to install

sshcommand_version

  • default: 0.7.0
  • type: version
  • description: The version of sshcommand to install

Libraries

dokku_app

Create or destroy dokku apps

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
state Choices:
  • present (default)
  • absent
The state of the app

Example

- name: Create a dokku app
  dokku_app:
    app: hello-world

- name: Delete that repo
  dokku_app:
    app: hello-world
    state: absent

dokku_certs

Manages ssl configuration for an app.

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
cert
required
Path to the ssl certificate
key
required
Path to the ssl certificate key
state Choices:
  • present (default)
  • absent
The state of the ssl configuration

Example

- name: Adds an ssl certificate and key to an app
  dokku_certs:
    app: hello-world
    key: /etc/nginx/ssl/hello-world.key
    cert: /etc/nginx/ssl/hello-world.crt

- name: Removes an ssl certificate and key from an app
  dokku_certs:
    app: hello-world
    state: absent

dokku_clone

Deploys a repository to an undeployed application

Requirements

  • the dokku-clone plugin

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
repository
required
Git repository url

Example

- name: clone a repo
  dokku_clone:
    app: hello-world
    repository: https://github.com/hello-world/hello-world.git

dokku_config

Manage environment variables for a given dokku application

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
config
required
Default: {} A map of environment variables where key => value

Example

- name: set KEY=VALUE
  dokku_config:
    app: hello-world
    config:
      KEY: VALUE_1
      KEY_2: VALUE_2

dokku_consul

Manage the consul configuration for a given dokku application

Requirements

  • the dokku-consul plugin (commercial)

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
endpoint Default: / The consul healthcheck endpoint
interval Default: 60s The consul healthcheck interval
state Choices:
  • present (default)
  • absent
The state of the consul integration
timeout
required
Default: 60s The consul healthcheck timeout

Example

- name: consul:enable hello-world
  dokku_consul:
    app: hello-world

- name: consul:enable hello-world with args
  dokku_consul:
    app: hello-world
    endpoint: /_status

- name: consul:disable hello-world
  dokku_consul:
    app: hello-world
    state: absent

dokku_docker_options

Manage docker-options for a given dokku application

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
option
required
A single docker option
phase Choices:
  • build
  • deploy
  • run
The phase in which to set the options
state Choices:
  • present (default)
  • absent
The state of the docker options

Example

- name: docker-options:add hello-world deploy
  dokku_docker_options:
    app: hello-world
    phase: deploy
    options:
        - "-v /var/run/docker.sock:/var/run/docker.sock"

- name: docker-options:remove hello-world deploy
  dokku_docker_options:
    app: hello-world
    phase: deploy
    options:
        - "-v /var/run/docker.sock:/var/run/docker.sock"
    state: absent

dokku_domains

Manages domains for a given application

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
domains
required
A list of domains
state Choices:
  • enable
  • disable
  • clear
  • present (default)
  • absent
The state of the application's domains

Example

- name: domains:add hello-world dokku.me
  dokku_domains:
    app: hello-world
    domains:
      - dokku.me

- name: domains:remove hello-world dokku.me
  dokku_domains:
    app: hello-world
    domains:
      - dokku.me
    state: absent

- name: domains:clear hello-world
  dokku_domains:
    app: hello-world
    state: clear

- name: domains:enable hello-world
  dokku_domains:
    app: hello-world
    state: enable

- name: domains:disable hello-world
  dokku_domains:
    app: hello-world
    state: disable

dokku_ecr

Manage the ecr configuration for a given dokku application

Requirements

  • the dokku-ecr plugin (commercial)

Parameters

Parameter Choices/Defaults Comments
account-id The ecr aws account-id
app
required
The name of the app
image-repo The image name to use when pushing to ecr
region Default: us-east-1 The ecr region
state Choices:
  • present (default)
  • absent
The state of the ecr integration

Example

- name: ecr:enable hello-world
  dokku_ecr:
    app: hello-world

- name: ecr:enable hello-world with args
  dokku_ecr:
    app: hello-world
    image-repo: prod-hello-world

- name: ecr:disable hello-world
  dokku_ecr:
    app: hello-world
    state: absent

dokku_git_sync

Manages syncing git code from a remote repository for an app

Requirements

  • the dokku-git-sync plugin (commercial)

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
remote The git remote url to use
state Choices:
  • present (default)
  • absent
The state of the git-sync integration

Example

- name: git-sync:enable hello-world
  dokku_git_sync:
    app: hello-world
    remote: [email protected]:hello-world/hello-world.git

- name: git-sync:disable hello-world
  dokku_git_sync:
    app: hello-world
    state: absent

dokku_global_cert

Manages global ssl configuration.

Requirements

  • the dokku-global-cert plugin

Parameters

Parameter Choices/Defaults Comments
cert
required
Path to the ssl certificate
key
required
Path to the ssl certificate key
state Choices:
  • present (default)
  • absent
The state of the ssl configuration

Example

- name: Adds an ssl certificate and key
  dokku_global_cert:
    key: /etc/nginx/ssl/global-hello-world.key
    cert: /etc/nginx/ssl/global-hello-world.crt

- name: Removes an ssl certificate and key
  dokku_global_cert:
    state: absent

dokku_service_link

Manage ports for a given dokku application

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
mappings
required
A list of port mappings
state Choices:
  • clear
  • present (default)
  • absent
The state of the port mappings

Example

- name: proxy:ports-add hello-world http:80:80
  dokku_service_link:
    app: hello-world
    mappings:
        - http:80:8080

- name: proxy:ports-remove hello-world http:80:80
  dokku_service_link:
    app: hello-world
    mappings:
        - http:80:8080
    state: absent

- name: proxy:ports-clear hello-world
  dokku_service_link:
    app: hello-world
    state: clear

dokku_proxy

Enable or disable the proxy for a dokku app

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
state Choices:
  • present (default)
  • absent
The state of the proxy

Example

- name: Enable the default proxy
  dokku_proxy:
    app: hello-world

- name: Disable the default proxy
  dokku_proxy:
    app: hello-world
    state: absent

dokku_registry

Manage the registry configuration for a given dokku application

Requirements

  • the dokku-registry plugin (commercial)

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
image Alternative to app name for image repository name
password The registry password (required for 'present' state)
server The registry server hostname (required for 'present' state)
state Choices:
  • present (default)
  • absent
The state of the registry integration
username The registry username (required for 'present' state)

Example

- name: registry:enable hello-world
  dokku_registry:
    app: hello-world
    password: password
    server: localhost:8080
    username: user

- name: registry:enable hello-world with args
  dokku_registry:
    app: hello-world
    image: other-image
    password: password
    server: localhost:8080
    username: user

- name: registry:disable hello-world
  dokku_registry:
    app: hello-world
    state: absent

dokku_service_create

Creates a given service

Parameters

Parameter Choices/Defaults Comments
name
required
The name of the service
service
required
The type of service to create

Example

- name: redis:create default
  dokku_service_create:
    name: default
    service: redis

dokku_service_link

Links and unlinks a given service to an application

Parameters

Parameter Choices/Defaults Comments
app
required
The name of the app
name
required
The name of the service
service
required
The type of service to link
state Choices:
  • present (default)
  • absent
The state of the service link

Example

- name: redis:link default hello-world
  dokku_service_link:
    app: hello-world
    name: default
    service: redis

- name: redis:unlink default hello-world
  dokku_service_link:
    app: hello-world
    name: default
    service: redis
    state: absent

dokku_storage

Manage storage for dokku applications

Parameters

Parameter Choices/Defaults Comments
app The name of the app
create_host_dir Default: False Whether to create the host directory or not
group Default: 32767 A group or gid that should own the created folder
mounts Default: [] A list of mounts to create, colon (:) delimited, in the format: host_dir:container_dir
state Choices:
  • present (default)
  • absent
The state of the service link
user Default: 32767 A user or uid that should own the created folder

Example

- name: mount a path
  dokku_storage:
    app: hello-world
    mounts:
      - /var/lib/dokku/data/storage/hello-world:/data

- name: mount a path and create the host_dir directory
  dokku_storage:
    app: hello-world
    mounts:
      - /var/lib/dokku/data/storage/hello-world:/data
    create_host_dir: true

- name: unmount a path
  dokku_storage:
    app: hello-world
    mounts:
      - /var/lib/dokku/data/storage/hello-world:/data
    state: absent

- name: unmount a path and destroy the host_dir directory (and contents)
  dokku_storage:
    app: hello-world
    mounts:
      - /var/lib/dokku/data/storage/hello-world:/data
    destroy_host_dir: true
    state: absent

Example Playbooks

Installing Dokku

---
- hosts: all
  roles:
    - dokku

Installing Plugins

---
- hosts: all
  roles:
    - dokku
  vars:
    dokku_plugins:
      - name: clone
        url: https://github.com/crisward/dokku-clone.git
      - name: postgres
        url: https://github.com/dokku/dokku-postgres.git

Deploying a simple word inflector

---
- hosts: all
  tasks:
    - name: dokku apps:create inflector
      dokku_app:
        app: inflector

    - name: dokku clone inflector
      dokku_clone:
        app: inflector
        repository: https://github.com/cakephp/inflector.cakephp.org

License

MIT License

See LICENSE.md for further details.

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