Openshift Node OS Rolling Update

ocp-rolling-os.yml

- hosts: nodes
  serial: "20%"
  
  tasks:
  
  - name: make node unschedulable
    command: oc adm manage-node {{inventory_hostname}} --schedulable=false
    delegate_to: "{{groups.masters.0}}"
    retries: 10
    delay: 5
    register: node_schedulable_result
    until: node_schedulable_result|succeeded
  
  - name: drain node from OCP cluster
    command: oc adm drain {{inventory_hostname}} --force --ignore-daemonsets=true
    register: node_drain_result
    failed_when:
    - not (node_drain_result.stdout.find('already') != -1)
    - node_drain_result.rc != 0
    delegate_to: "{{groups.masters.0}}"
  
  - name: update os
    yum: 
      name: "*" 
      state: latest
      update_cache: yes
    
  - name: Check for reboot hint.
    shell: LAST_KERNEL=$(rpm -q --last kernel | awk 'NR==1{sub(/kernel-/,""); print $1}'); CURRENT_KERNEL=$(uname -r); if [ $LAST_KERNEL != $CURRENT_KERNEL ]; then echo 'reboot'; else echo 'no'; fi
    ignore_errors: true
    register: reboot_hint

  - name: Restart master system
    shell: sleep 2 && shutdown -r now "Machine restart after update"
    when: reboot_hint.stdout.find("reboot") != -1
    register: rebooting
    async: 1
    poll: 0
    ignore_errors: true
    become: yes

  - set_fact:
      wait_for_host: "{{ ansible_host }}"

  - name: Wait for master to restart
    local_action:
      module: wait_for
        host="{{ wait_for_host }}"
        state=started
        delay=10
        timeout=600
        port="{{ ansible_port | default(ansible_ssh_port | default(22,boolean=True),boolean=True) }}"
    become: no
    when: rebooting|changed
 
  - name: make node schedulable again
    command: oc adm manage-node {{inventory_hostname}} --schedulable=true
    delegate_to: "{{groups.masters.0}}"
    retries: 10
    delay: 5
    register: node_schedulable_result
    until: node_schedulable_result|succeeded

latest ver moved here: https://github.com/miticojo/openshift-utils