Ansible Concourse Resource

This is Ansible resource for Concourse to be able to execute Ansible playbooks from concourse.

This a pure Python implementation using the Ansible API. It does not use the binary commands and it defines an output plugin to send the ansible execution logs to stderr as it is required by concourse (see ansible/callbacks/concourse.py).

The ansible default configuration (in /etc/ansible) is defined in ansible folder.

Source Configuration

Parameters available to use in the resource definition. None of then are required, but probably you will need to setup private_key, remote_user and inventory:

• private_key: A string containing the ssh private key used for ssh connections.
• remote_user: Remote user used to establish a ssh connection.
• remote_pass : If private_key is not provided, password for remote_user.
• vault_password: Ansible vault password to access to encrypted files with variables.
• extra_vars: Key-value dictionary with variables used in the playbooks.
• inventory: Dictionary for inventory definition:
  • file: Defaults to inventory.ini file name for inventory.
  • path: Folder where the hosts inventory file will be created (if needed) and additional inventory files can be defined: group_vars and host_vars are. Defaults to inventory.
  • hosts: Ansible inventory definition specifying the hosts, hosts groups and variables.
  • executable: Path to a dynamic inventory executable.
• become: If true, execute playbooks as become_user. Usually not needed at this level.
• become_method: Ansible become method (defaults to sudo).
• become_user: User to run for privileged tasks (defaults to root).
• become_pass: Password in order to become becomer_user with become_method.
• ssh_common_args: ssh client additional arguments to establish ssh connections.
• forks: Number of parallel execution threads for hosts groups.
• tags: Limit playbook execution to only tasks tagged with this tags.
• skip_tags: Tasks of playbook with these tags will be skipped.

Behavior

check, in

Currently this resource only supports the put phase of a job plan, so these are effectively no-ops. This will likely change in the future.

out: Run an Ansible playbook

Run a an ansible playbook, sending the output to stderr by using a concourse stdout plugin (defined in the default configuration ansible/ansible.cfg).

The parameters are almost the same as the ones in source, except private_key and playbook (only in out).

Parameters

• src: Base folder where all the ansible resources are (inventory, playbook, ...)
• playbook: Playbook file name to execute.
• remote_user: Remote user used to establish a ssh connection.
• remote_pass : If private_key is not provided, password for remote_user.
• vault_password: Ansible vault password to access to encrypted files with variables.
• extra_vars: Key-value dictionary with variables used in the playbooks.
• inventory: Dictionary for inventory definition:
  • file: Defaults to inventory.ini file name for inventory.
  • path: Folder where the hosts inventory file will be created (if needed) and additional inventory files can be defined: group_vars and host_vars are. Defaults to inventory.
  • hosts: Ansible inventory definition specifying the hosts, hosts groups and variables.
  • executable: Path to a dynamic inventory executable.
• become: If true, execute playbooks as become_user. Usually not needed at this level.
• become_method: Ansible become method (defaults to sudo).
• become_user: User to run for privileged tasks (defaults to root).
• become_pass: Password in order to become becomer_user with become_method.
• ssh_common_args: ssh client additional arguments to establish ssh connections.
• forks: Number of parallel execution threads for hosts groups.
• tags: Limit playbook execution to only tasks tagged with this tags.
• skip_tags: Tasks of playbook with these tags will be skipped.

Example Pipeline

---
resource_types:
- name: ansible
  type: docker-image
  source:
    repository: platformengineering/concourse-ansible-resource

resources:
- name: ansible-playbook
  type: git
  source:
    uri: [email protected]:springerpe/repository.git
    branch: master
    private_key: {{github-private-key}}
- name: ansible-executor
  type: ansible
  source:
    private_key: {{ansible-private-key}}
    remote_user: ansible
    inventory:
      hosts:
        webservers: 
        - "host2.example.com"
        - "host3.example.com"
        atlanta:
            hosts:
            - "host1.example.com"
            - "host4.example.com"
            - "host5.example.com"
            vars:
              b: false
            children:
            - marietta
        marietta:
        - "host6.example.com"

jobs:
- name: run-ansible
  plan:
  - get: ansible-playbook
  - put: ansible-executor
    params:
      src: "ansible-playbook"
      playbook: "site.yml"

Another pipeline example:

---
resource_types:
- name: ansible
  type: docker-image
  source:
    repository: platformengineering/concourse-ansible-resource

resources:
- name: ansible-playbook
  type: git
  source:
    uri: [email protected]:springernature/ee-ansible-ironic-standalone.git
    branch: master
    private_key: |
        -----BEGIN RSA PRIVATE KEY-----
        ..................................................................
        -----END RSA PRIVATE KEY-----

- name: ansible-executor
  type: ansible
  source:
    private_key: {{ansible-private-key}}
    remote_user: {{ansible-remote-user}}
    vault_password: {{ansible-vault-password}}


jobs:
- name: run-ansible
  plan:
  - get: ansible-playbook
    params:
      submodules: all
  - put: ansible-executor
    params:
      src: "ansible-playbook"
      inventory:
        path: "inventory"
        file: "pe-prod-dogo-ironic-01.ini"
      playbook: "setup.yml"

Ansible playbook repo structure

This is an example of a playbook git repository:

.
├── playbook.yml
├── inventory
│   ├── static_inventory.ini
│   └── group_vars
│       └── group.yml
├── [roles]
│   ├── role1
│   └── role2
├── [tasks]
│   ├── task1.yml
│   └── task1.yml
├── [files]
│   └── file.bin
└── [vars]
    ├── secrets.yml
    └── other_vars.yml

Author

Jose Riguera [email protected] (c) 2017 Springer Nature Platform Engineering