Create dnsmasq cluster.conf based on OpenShift inventory hostfile

dnsmasq-cluster-setup.yaml

---
- name: Configure dnsmasq
  hosts: all
  tasks:

  - name: Install dnsmasq
    yum:
      name: dnsmasq
      state: latest

  - name: Start and enable dnsmasq
    service:
      name: dnsmasq
      state: started
      enabled: yes

  - name: Create cluster.conf file
    lineinfile:
      line: "{{ item }}"
      state: present
      path: /tmp/cluster.conf
      create: yes
    with_items:
      - "host-record={{ ansible_nodename }},{{ ansible_default_ipv4.address }}"
    delegate_to: 127.0.0.1

  - name: Add console info to cluster.conf
    lineinfile:
      line: "{{ item }}"
      state: present
      path: /tmp/cluster.conf
    with_items:
      - "host-record={{ openshift_master_cluster_hostname }},{{ lookup('dig', '{{ openshift_master_cluster_hostname }}.') }}"
      - "host-record={{ openshift_master_cluster_public_hostname }},{{ lookup('dig', '{{ openshift_master_cluster_public_hostname }}.') }}"
    when: openshift_master_cluster_public_host is defined and openshift_master_cluster_hostname is defined
    delegate_to: 127.0.0.1

  - name: Copy created cluster.conf file
    copy:
      src: /tmp/cluster.conf
      dest: /etc/dnsmasq.d/cluster.conf
    notify: restart dnsmasq

  handlers:

    - name: restart dnsmasq
      service:
        name: dnsmasq
        state: restarted
        

This is an ansible playbook to create a dnsmasq cluster.conf file based on all of the nodes found in an OpenShift inventory host file.

Removed a task that copied a file that was assumed to not exist and added a 'when' condition to verify that the console names were defined.