Add the steps to reboot the computes after update.

This sequence implements reboot of the compute nodes after the update.

We have one instance created.  If the hypervisor being rebooted has
the instance that instance will be live-migrated to another hypervisor
before the reboot and migrated back to that original hypervisor after
the reboot.

Some basic sanity checks are performed after the reboot and before the
migration back to ensure that the necessary services are up and
running.

During the reboot we start two scripts. One monitors and log the
reboot of the hypervisors.  The other log where the instance is
currently running.  The log files can be found in
`~/ci-framework-data/tests/update/` in `reboot_server_status.log` and
`instance_placement.log` respectively.

A note about node evacuation.  We are still using node evaction from
the nova cli.  This command has not been ported to the openstack
cli. There's a discussion about it [on launchpad](https://bugs.launchpad.net/python-openstackclient/+bug/2055552).

The official documentation mention only the live-migration path, but
as we also use the live-migration in the test sequence that part is
covered.  We still expect customer to use the nova cli as it's way
more user friendly and is still currently working.

Closes: https://issues.redhat.com/browse/OSPRH-8937

roles/update/README.md

@@ -13,5 +13,6 @@ Role to run update
 * `cifmw_update_ping_loss_percent` : (Integer) Maximum percentage of ping loss accepted.  Default to `0`. Only relevant when `cifmw_update_ping_loss_second` is not 0.
 * `cifmw_update_control_plane_check`: (Boolean) Activate a continuous control plane testing. Default to `False`
 * `cifmw_update_openstackclient_pod_timeout`: (Integer) Maximum number of seconds to wait for the openstackclient Pod to be available during control plane testing, as it is being restarted during update.  Default to `10` seconds.
-
+* `cifmw_update_ansible_ssh_private_key_file`: (String) Define the path to the private key file used for the compute nodes.
+* `cifmw_update_wait_retries_reboot`: (Integer) Number of retries to wait for a compute node reboot. One retry is done every five seconds. Default to 60, so five minutes.
 ## Examples

roles/update/defaults/main.yml

@@ -38,6 +38,9 @@ cifmw_update_ping_start_script: "{{ cifmw_update_artifacts_basedir }}/l3_agent_s
 cifmw_update_ping_stop_script: "{{ cifmw_update_artifacts_basedir }}/l3_agent_stop_ping.sh"
 
 ## User facing
+cifmw_update_ansible_ssh_private_key_file: >-
+  "{{ ansible_ssh_private_key_file | default(ansible_user_dir ~ '/.ssh/id_cifw') }}"
+cifmw_update_wait_retries_reboot: 60
 
 cifmw_update_ping_test: false
 cifmw_update_create_volume: false

roles/update/molecule/default/prepare.yml

@@ -23,6 +23,14 @@
     cifmw_installyamls_repos: "{{ ansible_user_dir }}/src/github.com/openstack-k8s-operators/install_yamls"
     cifmw_install_yamls_defaults:
       NAMESPACE: openstack
+    cifmw_path: "{{ ansible_user_dir }}/.crc/bin:{{ ansible_user_dir }}/.crc/bin/oc:{{ ansible_user_dir }}/bin:{{ ansible_env.PATH }}"
+    cifmw_openshift_kubeconfig: "{{ ansible_user_dir  }}/.crc/machines/crc/kubeconfig"
+  pre_tasks:
+    - name: Ensure CRC is started
+      async: 1800
+      poll: 0
+      register: _crc_start
+      ansible.builtin.command: crc start
   roles:
     - role: test_deps
     - role: ci_setup
@@ -31,4 +39,12 @@
     - name: Set custom cifmw PATH reusable fact
       ansible.builtin.set_fact:
         cifmw_path: "{{ ansible_user_dir }}/.crc/bin:{{ ansible_user_dir }}/.crc/bin/oc:{{ ansible_user_dir }}/bin:{{ ansible_env.PATH }}"
+        cifmw_openshift_kubeconfig: "{{ ansible_user_dir }}/.crc/machines/crc/kubeconfig"
         cacheable: true
+    - name: Check for CRC status
+      ansible.builtin.async_status:
+        jid: "{{ _crc_start.ansible_job_id  }}"
+      register: _crc_status
+      until: _crc_status.finished
+      retries: 100
+      delay: 10

roles/update/tasks/main.yml

@@ -74,3 +74,6 @@
     - not cifmw_update_run_dryrun | bool
   ansible.builtin.shell: |
     {{ cifmw_update_artifacts_basedir }}/control_plane_test_stop.sh
+
+- name: Reboot the compute nodes
+  ansible.builtin.include_tasks: reboot_computes.yml

roles/update/tasks/reboot_computes.yml

@@ -0,0 +1,75 @@
+- name: Define command for OpenStack client interactions
+  ansible.builtin.set_fact:
+    cifmw_update_openstack_cmd: >-
+      oc rsh -n {{ cifmw_update_namespace }} openstackclient openstack
+
+- name: Register storage backend type
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.shell: >-
+    set -o pipefail;
+    {{ cifmw_update_openstack_cmd }} volume service list -f json |
+      jq -r -c '.[] | select(.Binary | contains("cinder-volume")) | .Host'
+  register: storage_backend
+
+- name: Get the list of OpenStack hypervisors
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.shell: |
+    {{ cifmw_update_openstack_cmd }} hypervisor list -f json
+  register: hypervisor_list
+  changed_when: false
+
+- name: Parse the hypervisor list to extract hostnames
+  ansible.builtin.set_fact:
+    hypervisor_hostnames: "{{ hypervisor_list.stdout | from_json | map(attribute='Hypervisor Hostname') | list }}"
+
+- name: Create a reboot monitor servers script
+  ansible.builtin.template:
+    src: "monitor_servers.sh.j2"
+    dest: "{{ cifmw_update_artifacts_basedir }}/monitor_servers.sh"
+    mode: "0775"
+
+- name: Start the monitor servers script
+  ansible.builtin.shell: |
+    nohup {{ cifmw_update_artifacts_basedir }}/monitor_servers.sh &> /dev/null &
+    echo $!
+  register: monitor_servers_job
+
+- name: Create a monitor placement monitor script
+  ansible.builtin.template:
+    src: "monitor_vm_placement.sh.j2"
+    dest: "{{ cifmw_update_artifacts_basedir }}/monitor_vm_placement.sh"
+    mode: "0775"
+
+- name: Start the monitor placement script
+  ansible.builtin.shell: |
+    nohup {{ cifmw_update_artifacts_basedir }}/monitor_vm_placement.sh &> /dev/null &
+    echo $!
+  register: monitor_placement_job
+
+- name: Iterate over each hypervisor for the reboot sequence
+  ansible.builtin.include_tasks: reboot_hypervisor.yml
+  loop: "{{ hypervisor_hostnames }}"
+  loop_control:
+    loop_var: hypervisor
+
+- name: Stop the monitor servers script if running
+  ansible.builtin.shell: |
+    if kill -0 {{ monitor_servers_job.stdout }} &>/dev/null; then
+      kill {{ monitor_servers_job.stdout }}
+    fi
+  register: kill_result
+  failed_when: kill_result.rc not in [0, 1] # We can still have a race
+                                            # between kill -0 and
+                                            # kill, even if unlikely.
+
+- name: Stop the monitor placement script if running
+  ansible.builtin.shell: |
+    if kill -0 {{ monitor_placement_job.stdout }} &>/dev/null; then
+      kill {{ monitor_placement_job.stdout }}
+    fi
+  register: kill_result
+  failed_when: kill_result.rc not in [0, 1]

roles/update/tasks/reboot_hypervisor.yml

@@ -0,0 +1,84 @@
+---
+- name: Extract short hostname from FQDN
+  ansible.builtin.set_fact:
+    cifmw_update_hypervisor_short_name: "{{ hypervisor.split('.')[0] }}"
+
+- name: Current stage
+  ansible.builtin.debug:
+    msg: "Rebooting {{ cifmw_update_hypervisor_short_name }}"
+
+- name: Define command for nova interaction
+  ansible.builtin.set_fact:
+    cifmw_update_bash_cmd: >-
+      oc rsh -n {{ cifmw_update_namespace }} openstackclient bash -c
+
+- name: Check active VMs on hypervisor
+  ansible.builtin.shell: >-
+    set -o pipefail;
+    {{ cifmw_update_openstack_cmd }} server list --all --host {{ hypervisor }} -f json
+    | jq -r -c '.[] | select(.Status | contains("ACTIVE") or contains("PAUSED")) | .ID'
+  register: active_vms
+  changed_when: false
+
+- name: Evacuate VMs if they are running
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.shell: >-
+    {{ cifmw_update_bash_cmd }} ". cloudrc &&
+    nova host-evacuate-live
+    {% if 'ceph' not in storage_backend.stdout %}
+    --block-migrate
+    {% endif %}
+    {{ hypervisor }}"
+  when: active_vms.stdout != ''
+  changed_when: true
+
+- name: Wait for compute node to get quiesced
+  ansible.builtin.shell: >-
+    set -o pipefail;
+    {{ cifmw_update_openstack_cmd }} server list --all --host {{ hypervisor }} -f json
+    | jq -r -c '[.[] | select(.Status |
+    contains("ACTIVE") or contains("PAUSED") or contains("MIGRATING"))]
+    | length'
+  register: compute_node_instances
+  until: compute_node_instances.stdout.find("0") > -1
+  retries: 30
+  delay: 5
+  when:
+    - active_vms.stdout != ''
+
+- name: Reboot the hypervisor using CR
+  ansible.builtin.include_tasks: reboot_hypervisor_using_cr.yml
+
+- name: Perform sanity checks post-reboot
+  ansible.builtin.include_tasks: reboot_hypervisor_sanity_checks.yml
+  vars:
+    current_hypervisor: "{{ hypervisor }}"
+
+- name: Current stage
+  ansible.builtin.debug:
+    msg: "Migrate back {{ item }} to {{ cifmw_update_hypervisor_short_name }}."
+  with_items: "{{ active_vms.stdout_lines }}"
+
+- name: Migrate back VMs post-reboot
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.shell: >-
+    set -o pipefail;
+    {{ cifmw_update_bash_cmd }} ". cloudrc &&
+    nova live-migration
+    {% if 'ceph' not in storage_backend.stdout %}
+    --block-migrate
+    {% endif %}
+    {{ item }} {{ hypervisor }}";
+    {{ cifmw_update_openstack_cmd }} server show {{ item }} -f json |
+    jq -r -c '. | .["OS-EXT-SRV-ATTR:host"]'
+  register: instance_migration_result
+  until: instance_migration_result.stdout.find(hypervisor) > -1
+  retries: 30
+  delay: 5
+  with_items: "{{ active_vms.stdout_lines }}"
+  when:
+    - active_vms.stdout != ''

roles/update/tasks/reboot_hypervisor_sanity_checks.yml

@@ -0,0 +1,50 @@
+---
+- name: Current stage
+  ansible.builtin.debug:
+    msg: |
+      Testing the status of the services for {{ current_hypervisor }} after reboot.
+
+- name: Verify nova-compute service
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.shell: >-
+    set -o pipefail;
+    {{ cifmw_update_openstack_cmd }} compute service list
+    --host {{ current_hypervisor }} -f json
+    | jq -r -c '.[]
+    | select(.Binary | contains("nova-compute")) | .State'
+  register: nova_compute_status
+  until: nova_compute_status.stdout == 'up'
+  retries: 30
+  delay: 5
+
+- name: Verify ovn-controller service
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.shell: >-
+    set -o pipefail;
+    {{ cifmw_update_openstack_cmd }} network agent list
+    --host {{ current_hypervisor }} -f json
+    | jq -r -c '.[]
+    | select(.Binary | contains("ovn-controller")) | .Alive'
+  register: ovn_controller_status
+  until: ovn_controller_status.stdout == 'true'
+  retries: 30
+  delay: 5
+
+- name: Verify networking-ovn-metadata-agent
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.shell: >-
+    set -o pipefail;
+    {{ cifmw_update_openstack_cmd }} network agent list
+    --host {{ current_hypervisor }} -f json
+    | jq -r -c '.[]
+    | select(.Binary | contains("neutron-ovn-metadata-agent")) | .Alive'
+  register: networking_ovn_metadata_status
+  until: networking_ovn_metadata_status.stdout == 'true'
+  retries: 30
+  delay: 5

roles/update/tasks/reboot_hypervisor_using_cr.yml

@@ -0,0 +1,62 @@
+---
+- name: Define command prefix for OpenShift operations
+  ansible.builtin.set_fact:
+    cifmw_update_oc_cmd_prefix: "oc -n {{ cifmw_update_namespace }}"
+
+- name: Fetch NodeSets for the OpenStackDataPlaneDeployment
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.shell: >-
+    set -o pipefail;
+    {{ cifmw_update_oc_cmd_prefix }} get openstackdataplanenodeset -o name
+    | awk -F'/' '{print "    - "  $2}'
+  register: cifmw_update_node_sets
+  changed_when: false
+
+- name: Construct date string for the CR name
+  ansible.builtin.set_fact:
+    cifmw_update_cr_date: "{{ lookup('pipe', 'date +%Y%m%d%H%S') }}"
+
+- name: Construct the CR name
+  ansible.builtin.set_fact:
+    cifmw_reboot_dep_name: >-
+      reboot-{{ cifmw_update_hypervisor_short_name }}-{{ cifmw_update_cr_date }}
+
+- name: Create the OpenStackDataPlaneDeployment CR YAML file
+  ansible.builtin.copy:
+    dest: "{{ cifmw_update_artifacts_basedir }}/{{ cifmw_reboot_dep_name }}.yaml"
+    content: |
+      apiVersion: dataplane.openstack.org/v1beta1
+      kind: OpenStackDataPlaneDeployment
+      metadata:
+        name: {{ cifmw_reboot_dep_name }}
+        namespace: {{ cifmw_update_namespace }}
+      spec:
+        nodeSets:
+      {{ cifmw_update_node_sets.stdout }}
+        servicesOverride:
+        - reboot-os
+        ansibleExtraVars:
+          edpm_reboot_strategy: force
+        ansibleLimit: {{ cifmw_update_hypervisor_short_name }}
+
+- name: Apply the OpenStackDataPlaneDeployment CR to trigger a reboot
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.command: >-
+    {{ cifmw_update_oc_cmd_prefix }}
+    create -f {{ cifmw_update_artifacts_basedir }}/{{ cifmw_reboot_dep_name }}.yaml
+
+- name: Check OpenStackDataPlaneDeployment status
+  environment:
+    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
+    PATH: "{{ cifmw_path }}"
+  ansible.builtin.command: >-
+    {{ cifmw_update_oc_cmd_prefix }}
+    get openstackdataplanedeployment {{ cifmw_reboot_dep_name }}
+  register: deployment_status
+  until: deployment_status.stdout.find('Setup complete') > -1
+  retries: "{{ cifmw_update_wait_retries_reboot }}"
+  delay: 5

roles/update/templates/monitor_servers.sh.j2

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+set -e
+
+# List of servers can be input as command line arguments or hardcoded here.
+servers=(
+{% for server in hypervisor_hostnames %}
+{{ server.split('.')[0] }}
+{% endfor %}
+)
+# or, for a hardcoded list: servers=("server1" "server2" ...)
+
+# Log file to store the status changes
+log_file="{{ cifmw_update_artifacts_basedir }}/reboot_server_status.log"
+
+# Function to check server status via SSH
+# TODO: ping always replies even if server is down.
+check_servers() {
+    for server in "${servers[@]}"; do
+        if ssh -i {{ cifmw_update_ansible_ssh_private_key_file }} -o BatchMode=yes -o ConnectTimeout=5 "$server" "exit" &> /dev/null; then
+            # Server is up
+            if [ "${server_status[$server]}" == "down" ]; then
+                echo "$(date '+%Y-%m-%d %H:%M:%S') - $server is UP" | tee -a "$log_file"
+                server_status[$server]="up"
+            fi
+        else
+            # Server is down
+            if [ "${server_status[$server]}" != "down" ]; then
+                echo "$(date '+%Y-%m-%d %H:%M:%S') - $server is DOWN" | tee -a "$log_file"
+                server_status[$server]="down"
+            fi
+        fi
+    done
+}
+
+# Initialize server status array
+declare -A server_status
+for server in "${servers[@]}"; do
+    server_status[$server]="unknown"
+done
+
+# Main loop to continuously check server status
+while true; do
+    check_servers
+    sleep 1  # Wait for 60 seconds before re-checking
+done

roles/update/templates/monitor_vm_placement.sh.j2

@@ -0,0 +1,23 @@
+#!/bin/bash
+# Log the instance hypervisor. Useful when tracking compute reboot.
+set -e
+
+export KUBECONFIG="{{ cifmw_openshift_kubeconfig }}"
+export PATH="{{ cifmw_path }}"
+
+log_file={{ cifmw_update_artifacts_basedir }}/instance_placement.log
+source_file={{ cifmw_update_artifacts_basedir }}/workload_suffix
+
+. "$source_file"
+
+instance_name="instance_${SUFFIX}"
+previous_hypervisor=""
+
+while true; do
+    current_hypervisor=$(oc rsh -n openstack openstackclient openstack server show "${instance_name}" -f json | jq -r -c '.["OS-EXT-SRV-ATTR:host"]')
+    if [[ "$current_hypervisor" != "$previous_hypervisor" ]]; then
+        echo "$(date) $instance_name $current_hypervisor" >> "$log_file"
+        previous_hypervisor="$current_hypervisor"
+    fi
+    sleep 1
+done