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---
# TODO(bbezak): Remove in G/2026.1 release as Redis migration is no longer required
- name: Check if Redis is running
become: true
kolla_container_facts:
action: get_containers
container_engine: "{{ kolla_container_engine }}"
name:
- redis
check_mode: false
register: redis_container_facts
- name: Set migration flag if Redis is present
set_fact:
_valkey_migration: "{{ redis_container_facts.containers['redis'] is defined }}"
- name: Perform Redis to Valkey migration steps
when: redis_container_facts.containers['redis'] is defined
block:
- name: Set temporary Valkey migration vars
set_fact:
valkey_server_port: "6380"
valkey_sentinel_port: "26380"
valkey_sentinel_monitor_name: "kolla-temp"
- name: Set valkey master host to valkey[0]
set_fact:
valkey_master_host: "{{ groups['valkey'][0] }}"
redis_slave_hosts: "{{ groups['redis'][1:] }}"
run_once: true
- name: Start Valkey on temporary ports with temp sentinel monitor name
import_tasks: deploy.yml
- name: Wait for Valkey replication sync
become: true
delegate_to: "{{ valkey_master_host }}"
run_once: true
command: >-
{{ kolla_container_engine }} exec valkey_server
valkey-cli -h {{ api_interface_address }} -p {{ valkey_server_port }} info replication
register: valkey_replication
until: "'master_link_status:up' in valkey_replication.stdout"
retries: 30
delay: 2
- name: Set replica-priority=10 on valkey[0] to ensure it becomes master
become: true
delegate_to: "{{ valkey_master_host }}"
run_once: true
command: >-
{{ kolla_container_engine }} exec valkey_server valkey-cli
-h {{ api_interface_address }} -p {{ valkey_server_port }}
CONFIG SET replica-priority 10
- name: Set replica-priority=0 on other valkey nodes to prevent promotion
become: true
command: >-
{{ kolla_container_engine }} exec valkey_server valkey-cli
-h {{ api_interface_address }} -p {{ valkey_server_port }} CONFIG SET replica-priority 0
when: inventory_hostname != valkey_master_host
- name: Stop redis slaves (so they don't get promoted during failover)
become: true
kolla_container:
name: redis
action: stop_container
when: inventory_hostname in redis_slave_hosts
- name: Trigger Sentinel failover (using one of redis-sentinels)
become: true
delegate_to: "{{ valkey_master_host }}"
run_once: true
command: >-
{{ kolla_container_engine }} exec redis_sentinel redis-cli
-h {{ api_interface_address }}
-p {{ redis_sentinel_port }}
SENTINEL failover kolla
- name: Wait until Valkey becomes master
become: true
delegate_to: "{{ valkey_master_host }}"
run_once: true
command: >-
{{ kolla_container_engine }} exec valkey_server
valkey-cli -h {{ api_interface_address }} -p {{ valkey_server_port }} info replication
register: valkey_role
until: "'role:master' in valkey_role.stdout"
retries: 30
delay: 2
- name: Stop all Redis containers
become: true
kolla_container:
name: redis
action: stop_and_remove_container
when: inventory_hostname in groups['redis']
- name: Stop all Sentinel containers
become: true
kolla_container:
name: redis_sentinel
action: stop_and_remove_container
when: inventory_hostname in groups['redis']
- name: Remove Redis data volume
become: true
kolla_container:
action: remove_volume
name: redis
when: inventory_hostname in groups['redis']
# These tasks run always, regardless of Redis presence
- name: Reset Valkey port to default (6379) after migration
set_fact:
valkey_server_port: "6379"
valkey_sentinel_port: "26379"
valkey_sentinel_monitor_name: "kolla"
_valkey_migration: false
- name: Reconfigure/Redeploy Valkey on default ports
import_tasks: reconfigure.yml
- name: Verify Valkey responds on port 6379
import_tasks: check.yml
- import_tasks: check-containers.yml
- name: Flush handlers
meta: flush_handlers
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