Adds pacemaker update_tasks for Pike minor update workflow

Adds update_tasks for the minor update workflow. These will be
collected into playbooks during an initial 'update init' heat
stack update and then invoked later by the operator as ansible
playbooks.

Current understanding/workflow:
 Step=1: stop the cluster on the updated node
 Step=2: Pull the latest image and retag the it pcmklatest
 Step=3: yum upgrade happens on the host
 Step=4: Restart the cluster on the node
 Step=5: Verification: test pacemaker services are running.

https://etherpad.openstack.org/p/tripleo-pike-updates-upgrades

Related-Bug: 1715557
Co-Authored-By: Damien Ciabrini <dciabrin@redhat.com>
Co-Authored-By: Sofer Athlan-Guyot <sathlang@redhat.com>
Change-Id: I101e0f5d221045fbf94fb9dc11a2f30706843806
(cherry picked from commit a953bda0ae615dc44d3e8a70aa7ab0160e26f3af)

2 files changed, 60 insertions, 0 deletions

diff --git a/docker/services/pacemaker/database/mysql.yaml b/docker/services/pacemaker/database/mysql.yaml
index 936272fa..39bbf42a 100644
--- a/docker/services/pacemaker/database/mysql.yaml
+++ b/docker/services/pacemaker/database/mysql.yaml
@@ -307,3 +307,33 @@ outputs:
         - name: Restart xinetd service after clustercheck removal
           tags: step2
           service: name=xinetd state=restarted
+      update_tasks:
+        - name: Get docker Mariadb image
+          set_fact:
+            docker_image: {get_param: DockerMysqlImage}
+            docker_image_latest: *mysql_image_pcmklatest
+          when: step == '2'
+        - name: Get previous Mariadb image id
+          shell: "docker images | awk '/mariadb.* pcmklatest/{print $3}'"
+          register: mariadb_image_id
+        - block:
+            - name: Get a list of container using Mariadb image
+              shell: "docker ps -q -f 'ancestor={{mariadb_image_id.stdout}}'"
+              register: mariadb_containers_to_destroy
+            # It will be recreated with the delpoy step.
+            - name: Remove any container using the same Mariadb image
+              shell: "docker rm -fv {{item}}"
+              with_items: "{{ mariadb_containers_to_destroy.stdout_lines }}"
+            - name: Remove previous Mariadb images
+              shell: "docker rmi -f {{mariadb_image_id.stdout}}"
+          when:
+            - step == '2'
+            - mariadb_image_id.stdout != ''
+        - name: Pull latest Mariadb images
+          command: "docker pull {{docker_image}}"
+          when: step == "2"
+        - name: Retag pcmklatest to latest Mariadb image
+          shell: "docker tag {{docker_image}} {{docker_image_latest}}"
+          when: step == "2"
+        # Got to check that pacemaker_is_active is working fine with bundle.
+        # TODO: pacemaker_is_active resource doesn't support bundle.
diff --git a/docker/services/pacemaker/database/redis.yaml b/docker/services/pacemaker/database/redis.yaml
index bcda4efc..fe69bb00 100644
--- a/docker/services/pacemaker/database/redis.yaml
+++ b/docker/services/pacemaker/database/redis.yaml
@@ -255,3 +255,33 @@ outputs:
         - name: Disable redis service
           tags: step2
           service: name=redis enabled=no
+      update_tasks:
+        - name: Get docker Redis image
+          set_fact:
+            docker_image: {get_param: DockerRedisImage}
+            docker_image_latest: *redis_image_pcmklatest
+          when: step == '2'
+        - name: Get previous Redis image id
+          shell: "docker images | awk '/redis.* pcmklatest/{print $3}'"
+          register: redis_image_id
+        - block:
+            - name: Get a list of container using Redis image
+              shell: "docker ps -q -f 'ancestor={{redis_image_id.stdout}}'"
+              register: redis_containers_to_destroy
+            # It will be recreated with the delpoy step.
+            - name: Remove any container using the same Redis image
+              shell: "docker rm -fv {{item}}"
+              with_items: "{{ redis_containers_to_destroy.stdout_lines }}"
+            - name: Remove previous Redis images
+              shell: "docker rmi -f {{redis_image_id.stdout}}"
+          when:
+            - step == '2'
+            - redis_image_id.stdout != ''
+        - name: Pull latest Redis images
+          command: "docker pull {{docker_image}}"
+          when: step == "2"
+        - name: Retag pcmklatest to latest Redis image
+          shell: "docker tag {{docker_image}} {{docker_image_latest}}"
+          when: step == "2"
+        # Got to check that pacemaker_is_active is working fine with bundle.
+        # TODO: pacemaker_is_active resource doesn't support bundle.