okd/playbooks/openshift-logging/private/config.yml

---
- name: Logging Install Checkpoint Start
  hosts: all
  gather_facts: false
  tasks:
  - name: Set Logging install 'In Progress'
    run_once: true
    set_stats:
      data:
        installer_phase_logging:
          title: "Logging Install"
          playbook: "playbooks/openshift-logging/config.yml"
          status: "In Progress"
          start: "{{ lookup('pipe', 'date +%Y%m%d%H%M%SZ') }}"

# Normally we only collect this information for our master group entries
# we want to also collect this for nodes so we can match group entries to nodes
- name: Get common IP facts when necessary
  hosts: oo_nodes_to_config:!oo_masters
  gather_facts: false
  tasks:
  - name: Gather Cluster facts
    openshift_facts:
      role: common
      local_facts:
        ip: "{{ openshift_ip | default(None) }}"

- name: Verify and collect ES hosts
  hosts: oo_first_master
  gather_facts: false
  tasks:
  - when: openshift_logging_install_logging | default(false) | bool
    block:
    - assert:
        that: openshift_logging_es_nodeselector is defined
        msg: "A node selector is required for Elasticsearch pods, please specify one with openshift_logging_es_nodeselector"

    - name: Ensure that ElasticSearch has nodes to run on
      import_role:
        name: openshift_control_plane
        tasks_from: ensure_nodes_matching_selector.yml
      vars:
        openshift_master_ensure_nodes_selector: "{{ openshift_logging_es_nodeselector | map_to_pairs }}"
        openshift_master_ensure_nodes_service: Elasticsearch

    - command: >
        {{ openshift_client_binary }}
        --config={{ openshift.common.config_base }}/master/admin.kubeconfig
        get nodes
        -l {{ openshift_logging_es_nodeselector | map_to_pairs }}
        -o jsonpath={.items[*].status.addresses[?(@.type==\"InternalIP\")].address}
      register: openshift_logging_es_hosts

    - when: openshift_logging_use_ops | default(false) | bool
      block:
      - assert:
          that: openshift_logging_es_ops_nodeselector is defined
          msg: "A node selector is required for Elasticsearch Ops pods, please specify one with openshift_logging_es_ops_nodeselector"

      - name: Ensure that ElasticSearch Ops has nodes to run on
        import_role:
          name: openshift_control_plane
          tasks_from: ensure_nodes_matching_selector.yml
        vars:
          openshift_master_ensure_nodes_selector: "{{ openshift_logging_es_ops_nodeselector | map_to_pairs }}"
          openshift_master_ensure_nodes_service: "Elasticsearch Ops"

      - command: >
          {{ openshift_client_binary }}
          --config={{ openshift.common.config_base }}/master/admin.kubeconfig
          get nodes
          -l {{ openshift_logging_es_ops_nodeselector | map_to_pairs }}
          -o jsonpath={.items[*].status.addresses[?(@.type==\"InternalIP\")].address}
        register: openshift_logging_es_ops_hosts

    - set_fact:
        openshift_logging_elasticsearch_hosts: "{{ ( openshift_logging_es_hosts.stdout.split(' ') | default([]) + (openshift_logging_es_ops_hosts.stdout.split(' ') if openshift_logging_es_ops_hosts.stdout is defined else []) ) | unique }}"

    #- name: Debug groups
    #  debug:
    #    var: groups
    #- name: Debug hostvars
    #  debug:
    #    var: hostvars

    # Check to see if the collected ip from the openshift facts above matches our node back to a
    # group entry in our inventory so we can maintain our group variables when updating the sysctl
    # files for specific nodes based on <node>.status.addresses[@.type==InternalIP].address
    - name: Evaluate oo_elasticsearch_nodes
      add_host:
        name: "{{ item }}"
        groups: oo_elasticsearch_nodes
        ansible_ssh_user: "{{ g_ssh_user | default(omit) }}"
        ansible_become: "{{ g_sudo | default(omit) }}"
      with_items: "{{ groups.get('oo_nodes_to_config', groups['all']) }}"
      changed_when: no
      run_once: true
      delegate_to: localhost
      connection: local
      when: hostvars[item].get('openshift',{}).get('common',{}).get('ip', None) in openshift_logging_elasticsearch_hosts

- name: Update vm.max_map_count for ES 5.x
  hosts: oo_elasticsearch_nodes
  gather_facts: false
  tasks:
  - when: openshift_logging_install_logging | default(false) | bool
    block:
    - name: Checking vm max_map_count value
      command:
        cat /proc/sys/vm/max_map_count
      register: _vm_max_map_count

    - name: Updating vm.max_map_count value
      sysctl:
        name: vm.max_map_count
        value: 262144
        sysctl_file: "/etc/sysctl.d/99-elasticsearch.conf"
        reload: yes
      when:
      - _vm_max_map_count.stdout | default(0) | int < 262144 | int

- name: Remove created 99-elasticsearch sysctl
  hosts: all
  gather_facts: false
  tasks:
  - when: not openshift_logging_install_logging | default(false) | bool
    file:
      state: absent
      name: /etc/sysctl.d/99-elasticsearch.conf

- name: OpenShift Aggregated Logging
  hosts: oo_first_master
  roles:
  - openshift_logging

- name: Logging Install Checkpoint End
  hosts: all
  gather_facts: false
  tasks:
  - name: Set Logging install 'Complete'
    run_once: true
    set_stats:
      data:
        installer_phase_logging:
          status: "Complete"
          end: "{{ lookup('pipe', 'date +%Y%m%d%H%M%SZ') }}"