okd/playbooks/common/openshift-cluster/upgrades/upgrade_control_plane.yml

---
###############################################################################
# Upgrade Masters
###############################################################################
- name: Evaluate additional groups for upgrade
  hosts: localhost
  connection: local
  become: no
  tasks:
  - name: Evaluate etcd_hosts_to_backup
    add_host:
      name: "{{ item }}"
      groups: etcd_hosts_to_backup
    with_items: "{{ groups.oo_etcd_to_config if groups.oo_etcd_to_config is defined and groups.oo_etcd_to_config | length > 0 else groups.oo_first_master }}"
    changed_when: False

# If facts cache were for some reason deleted, this fact may not be set, and if not set
# it will always default to true. This causes problems for the etcd data dir fact detection
# so we must first make sure this is set correctly before attempting the backup.
- name: Set master embedded_etcd fact
  hosts: oo_masters_to_config
  roles:
  - openshift_facts
  tasks:
  - openshift_facts:
      role: master
      local_facts:
        embedded_etcd: "{{ groups.oo_etcd_to_config | default([]) | length == 0 }}"
        debug_level: "{{ openshift_master_debug_level | default(openshift.common.debug_level | default(2)) }}"

- name: Upgrade and backup etcd
  include: ./etcd/main.yml

# Create service signer cert when missing. Service signer certificate
# is added to master config in the master_config_upgrade hook.
- name: Determine if service signer cert must be created
  hosts: oo_first_master
  tasks:
  - name: Determine if service signer certificate must be created
    stat:
      path: "{{ openshift.common.config_base }}/master/service-signer.crt"
    register: service_signer_cert_stat
    changed_when: false

- include: create_service_signer_cert.yml

# Set openshift_master_facts separately. In order to reconcile
# admission_config's, we currently must run openshift_master_facts and
# then run openshift_facts.
- name: Set OpenShift master facts
  hosts: oo_masters_to_config
  roles:
  - openshift_master_facts

# The main master upgrade play. Should handle all changes to the system in one pass, with
# support for optional hooks to be defined.
- name: Upgrade master
  hosts: oo_masters_to_config
  vars:
    openshift_master_ha: "{{ groups.oo_masters_to_config | length > 1 }}"
  serial: 1
  handlers:
  - include: ../../../../roles/openshift_master/handlers/main.yml
    static: yes
  roles:
  - openshift_facts
  post_tasks:

  # Run the pre-upgrade hook if defined:
  - debug: msg="Running master pre-upgrade hook {{ openshift_master_upgrade_pre_hook }}"
    when: openshift_master_upgrade_pre_hook is defined

  - include: "{{ openshift_master_upgrade_pre_hook }}"
    when: openshift_master_upgrade_pre_hook is defined

  - include: rpm_upgrade.yml component=master
    when: not openshift.common.is_containerized | bool

  - include_vars: ../../../../roles/openshift_master_facts/vars/main.yml

  - include: upgrade_scheduler.yml

  - include: "{{ master_config_hook }}"
    when: master_config_hook is defined

  - include_vars: ../../../../roles/openshift_master/vars/main.yml

  - name: Update systemd units
    include: ../../../../roles/openshift_master/tasks/systemd_units.yml

  - name: Check for ca-bundle.crt
    stat:
      path: "{{ openshift.common.config_base }}/master/ca-bundle.crt"
    register: ca_bundle_stat
    failed_when: false

  - name: Check for ca.crt
    stat:
      path: "{{ openshift.common.config_base }}/master/ca.crt"
    register: ca_crt_stat
    failed_when: false

  - name: Migrate ca.crt to ca-bundle.crt
    command: mv ca.crt ca-bundle.crt
    args:
      chdir: "{{ openshift.common.config_base }}/master"
    when: ca_crt_stat.stat.isreg and not ca_bundle_stat.stat.exists

  - name: Link ca.crt to ca-bundle.crt
    file:
      src: "{{ openshift.common.config_base }}/master/ca-bundle.crt"
      path: "{{ openshift.common.config_base }}/master/ca.crt"
      state: link
    when: ca_crt_stat.stat.isreg and not ca_bundle_stat.stat.exists

  # Run the upgrade hook prior to restarting services/system if defined:
  - debug: msg="Running master upgrade hook {{ openshift_master_upgrade_hook }}"
    when: openshift_master_upgrade_hook is defined

  - include: "{{ openshift_master_upgrade_hook }}"
    when: openshift_master_upgrade_hook is defined

  - include: ../../openshift-master/restart_hosts.yml
    when: openshift.common.rolling_restart_mode == 'system'

  - include: ../../openshift-master/restart_services.yml
    when: openshift.common.rolling_restart_mode == 'services'

  # Run the post-upgrade hook if defined:
  - debug: msg="Running master post-upgrade hook {{ openshift_master_upgrade_post_hook }}"
    when: openshift_master_upgrade_post_hook is defined

  - include: "{{ openshift_master_upgrade_post_hook }}"
    when: openshift_master_upgrade_post_hook is defined

  - set_fact:
      master_update_complete: True

##############################################################################
# Gate on master update complete
##############################################################################
- name: Gate on master update
  hosts: localhost
  connection: local
  become: no
  tasks:
  - set_fact:
      master_update_completed: "{{ hostvars
                                 | oo_select_keys(groups.oo_masters_to_config)
                                 | oo_collect('inventory_hostname', {'master_update_complete': true}) }}"
  - set_fact:
      master_update_failed: "{{ groups.oo_masters_to_config | difference(master_update_completed) }}"
  - fail:
      msg: "Upgrade cannot continue. The following masters did not finish updating: {{ master_update_failed | join(',') }}"
    when: master_update_failed | length > 0

###############################################################################
# Reconcile Cluster Roles, Cluster Role Bindings and Security Context Constraints
###############################################################################

- name: Reconcile Cluster Roles and Cluster Role Bindings and Security Context Constraints
  hosts: oo_masters_to_config
  roles:
  - { role: openshift_cli }
  vars:
    origin_reconcile_bindings: "{{ deployment_type == 'origin' and openshift_version | version_compare('1.0.6', '>') }}"
    ent_reconcile_bindings: true
    openshift_docker_hosted_registry_network: "{{ hostvars[groups.oo_first_master.0].openshift.common.portal_net }}"
    # Another spot where we assume docker is running and do not want to accidentally trigger an unsafe
    # restart.
    skip_docker_role: True
  tasks:
  - name: Reconcile Cluster Roles
    command: >
      {{ openshift.common.client_binary }} adm --config={{ openshift.common.config_base }}/master/admin.kubeconfig
      policy reconcile-cluster-roles --additive-only=true --confirm -o name
    register: reconcile_cluster_role_result
    changed_when:
    - reconcile_cluster_role_result.stdout != ''
    - reconcile_cluster_role_result.rc == 0
    run_once: true

  - name: Reconcile Cluster Role Bindings
    command: >
      {{ openshift.common.client_binary }} adm --config={{ openshift.common.config_base }}/master/admin.kubeconfig
      policy reconcile-cluster-role-bindings
      --exclude-groups=system:authenticated
      --exclude-groups=system:authenticated:oauth
      --exclude-groups=system:unauthenticated
      --exclude-users=system:anonymous
      --additive-only=true --confirm -o name
    when: origin_reconcile_bindings | bool or ent_reconcile_bindings | bool
    register: reconcile_bindings_result
    changed_when:
    - reconcile_bindings_result.stdout != ''
    - reconcile_bindings_result.rc == 0
    run_once: true

  - name: Reconcile Jenkins Pipeline Role Bindings
    command: >
      {{ openshift.common.client_binary }} adm --config={{ openshift.common.config_base }}/master/admin.kubeconfig policy reconcile-cluster-role-bindings system:build-strategy-jenkinspipeline --confirm -o name
    run_once: true
    register: reconcile_jenkins_role_binding_result
    changed_when:
    - reconcile_jenkins_role_binding_result.stdout != ''
    - reconcile_jenkins_role_binding_result.rc == 0
    when: openshift.common.version_gte_3_4_or_1_4  | bool

  - name: Reconcile Security Context Constraints
    command: >
      {{ openshift.common.client_binary }} adm policy reconcile-sccs --confirm --additive-only=true -o name
    register: reconcile_scc_result
    changed_when:
    - reconcile_scc_result.stdout != ''
    - reconcile_scc_result.rc == 0
    run_once: true

  - set_fact:
      reconcile_complete: True

##############################################################################
# Gate on reconcile
##############################################################################
- name: Gate on reconcile
  hosts: localhost
  connection: local
  become: no
  tasks:
  - set_fact:
      reconcile_completed: "{{ hostvars
                                 | oo_select_keys(groups.oo_masters_to_config)
                                 | oo_collect('inventory_hostname', {'reconcile_complete': true}) }}"
  - set_fact:
      reconcile_failed: "{{ groups.oo_masters_to_config | difference(reconcile_completed) }}"
  - fail:
      msg: "Upgrade cannot continue. The following masters did not finish reconciling: {{ reconcile_failed | join(',') }}"
    when: reconcile_failed | length > 0

- name: Upgrade Docker on dedicated containerized etcd hosts
  hosts: oo_etcd_to_config:!oo_nodes_to_upgrade
  serial: 1
  any_errors_fatal: true
  roles:
  - openshift_facts
  tasks:
  - include: docker/upgrade.yml
    when: l_docker_upgrade is defined and l_docker_upgrade | bool and not openshift.common.is_atomic | bool

- name: Drain and upgrade master nodes
  hosts: oo_masters_to_config:&oo_nodes_to_upgrade
  # This var must be set with -e on invocation, as it is not a per-host inventory var
  # and is evaluated early. Values such as "20%" can also be used.
  serial: "{{ openshift_upgrade_nodes_serial | default(1) }}"
  any_errors_fatal: true

  pre_tasks:
  - name: Load lib_openshift modules
    include_role:
      name: lib_openshift

  # TODO: To better handle re-trying failed upgrades, it would be nice to check if the node
  # or docker actually needs an upgrade before proceeding. Perhaps best to save this until
  # we merge upgrade functionality into the base roles and a normal config.yml playbook run.
  - name: Mark node unschedulable
    oadm_manage_node:
      node: "{{ openshift.node.nodename | lower }}"
      schedulable: False
    delegate_to: "{{ groups.oo_first_master.0 }}"
    retries: 10
    delay: 5
    register: node_unschedulable
    until: node_unschedulable|succeeded

  - name: Drain Node for Kubelet upgrade
    command: >
      {{ hostvars[groups.oo_first_master.0].openshift.common.admin_binary }} drain {{ openshift.node.nodename | lower }} --force --delete-local-data --ignore-daemonsets
    delegate_to: "{{ groups.oo_first_master.0 }}"

  roles:
  - lib_openshift
  - openshift_facts
  - docker
  - openshift_node_upgrade

  post_tasks:
  - name: Set node schedulability
    oadm_manage_node:
      node: "{{ openshift.node.nodename | lower }}"
      schedulable: True
    delegate_to: "{{ groups.oo_first_master.0 }}"
    retries: 10
    delay: 5
    register: node_schedulable
    until: node_schedulable|succeeded
    when: node_unschedulable|changed