Docker and Ansible: running specific tasks on a dynamically defined host list

[Kamesh Sampath]

Hello,

I am running docker swarm with Ansible, my playbook deploys a docker image on specific node  using swarm, post that deployment I want to execute certain Ansible tasks on the host where the image is deployed (still running from the same playbook role), as I am using consul as my backend I am able to retrieve the host(s) where the image is deployed and used "add_host" to create a host group. 

I don't know how to trigger the tasks via "include" on that hosts. Any thoughts how to achieve that ?

Below are the references of the main.yml of the role and the include file.

Regards,

Kamesh

main.yml

---

- set_fact:

    portal_compose_dir: "{{ compose_configs_dir }}/{{app_name}}/portal"

  tags: [liferay]

- set_fact:

    liferay_home_dir: "{{liferay_base_dir}}/{{app_name}}"

  tags: [liferay]

- include: rollback.yml

  when: rollback_app is defined

- name: "Create Liferay Directories"

  file:

    dest: "{{ item }}"

    state: directory

  with_items:

    - "{{ portal_compose_dir }}"

  tags: [liferay]

- name: "Liferay App Swarm Filters"

  template:

    src: constraints.env.j2

    dest: "{{ portal_compose_dir }}/constraints.env"

  tags: [liferay]

- name: "Liferay Docker Compose"

  template:

    src: "liferay-compose.yml.j2"

    dest: "{{ portal_compose_dir }}/docker-compose.yml"

  tags: [liferay]

## TODO Refresh versions

- name: "Pull the Liferay App"

  shell: docker-compose pull lportal

  args: 

    chdir: "{{ portal_compose_dir}}"

  environment:

    DOCKER_HOST: "tcp://{{ ip }}:2376"

    DOCKER_CERT_PATH: "/home/{{ ansible_ssh_user }}/.docker"

    DOCKER_TLS_VERIFY: 1

    PATH: "{{ path }}"

  tags: [liferay]

- name: "Spin up Liferay Container"

  shell: docker-compose up -d --no-recreate lportal

  args: 

    chdir: "{{ portal_compose_dir }}"

  environment:

    DOCKER_HOST: "tcp://{{ ip }}:2376"

    DOCKER_CERT_PATH: "/home/{{ ansible_ssh_user }}/.docker"

    DOCKER_TLS_VERIFY: 1

    PATH: "{{ path }}"

  tags: [liferay]

- name: "Liferay Service Info"

  get_url: 

    url: "http://10.100.199.200/v1/catalog/service/lportal_{{app_name}} "

    dest: /tmp/liferay_service_info.json

  tags: [liferay-config]

- shell: "cat /tmp/liferay_service_info.json |  jq --raw-output '.[] | .Address ' "

  environment:

    PATH: "{{ path }}"

  register: liferay_hosts_info

  tags: [liferay-config]

- debug: var=liferay_hosts_info.stdout

  ignore_errors: true

  tags: [liferay-config]

- add_host: 

    groups: liferay_deployed_hosts

    name: "{{ liferay_hosts_info.stdout }}"

  tags: [liferay-config]

- include: deploy-portal-ext.yml

  tags: [liferay-config]

deploy-portal-ext.yml

---

- hosts: liferay_deployed_hosts

  remote_user: vagrant

  sudo: yes

  tasks:

  handlers:

 - name: "Create Liferay Directories"

    file:

      dest: "{{ item }}"

      state: directory

    with_items:

      - "{{ liferay_home_dir }}"

      - "{{ liferay_home_dir }}/www/html"

    tags: [liferay-config]

  - name: "Liferay Portal Configuration"

    template:

      src: portal-setup-wizard.properties.ctmpl.j2

      dest: "{{ portal_compose_dir }}/portal-setup-wizard.properties.ctmpl"

    tags: [liferay-config]

  - name: "Deploy Portal Ext Properties"

    shell: >

      consul-template \

        -consul "{{ip}}:8500" \

        -template "{{portal_compose_dir}}/portal-setup-wizard.properties.ctmpl:{{ liferay_home_dir}}/portal-setup-wizard.properties" \

        -once

    notify: restart liferay

    environment: 

      PATH: "{{ path }}"

    tags: [liferay-config]