kolla-ansible/ansible/roles/mariadb/tasks/recover_cluster.yml
caoyuan 5cd55bf236 Optimize reconfiguration for mariadb
Change-Id: I278609f9832955849bc9381120a1b260f5a03f1b
Partially-implements: blueprint better-reconfigure
2017-07-22 08:50:08 +08:00

79 lines
2.6 KiB
YAML

---
- fail:
msg: "MariaDB cluster was not found. Is your inventory correct?"
when: not has_cluster | bool
- name: Checking if and mariadb containers are running
kolla_docker:
name: "mariadb"
action: "get_container_state"
register: container_state
- fail:
msg: "There are running MariaDB nodes, please stop them first."
when: container_state.Running | bool
any_errors_fatal: True
- name: Cleaning up temp file on mariadb hosts
file: path=/tmp/kolla_mariadb_grastate.dat state=absent
changed_when: false
check_mode: no
- name: Cleaning up temp file on localhost
local_action: file path=/tmp/kolla_mariadb_recover_inventory_name state=absent
changed_when: false
check_mode: no
run_once: true
- block:
- name: Copying grastate.dat file from mariadb container
command: docker cp mariadb:/var/lib/mysql/grastate.dat /tmp/kolla_mariadb_grastate.dat
changed_when: false
- name: Print the content of grastate.dat file
command: cat /tmp/kolla_mariadb_grastate.dat
register: cat_grastate
changed_when: false
- name: Registering mariadb seqno variable
set_fact:
seqno: "{{ (cat_grastate.stdout|from_yaml).seqno }}"
changed_when: false
- name: Comparing seqno value on all mariadb hosts
shell: "if [[ {{ hostvars[inventory_hostname]['seqno'] }} -lt {{ hostvars[item]['seqno'] }} ]]; then echo {{ hostvars[item]['seqno'] }}; fi"
with_items: "{{ groups['mariadb'] }}"
changed_when: false
register: seqno_compare
- name: Writing hostname of host with the largest seqno to temp file
local_action: copy content={{ inventory_hostname }} dest=/tmp/kolla_mariadb_recover_inventory_name mode=0644
changed_when: false
when: seqno_compare.results | map(attribute='stdout') | join('') == ""
- name: Registering mariadb_recover_inventory_name from temp file
set_fact:
mariadb_recover_inventory_name: "{{ lookup('file', '/tmp/kolla_mariadb_recover_inventory_name') }}"
when:
- mariadb_recover_inventory_name is not defined
- set_fact:
bootstrap_host: "{{ mariadb_recover_inventory_name }}"
master_host: "{{ mariadb_recover_inventory_name }}"
changed_when: true
notify:
- Starting first MariaDB container
- restart slave mariadb
- restart master mariadb
- name: Cleaning up temp file on mariadb hosts
file: path=/tmp/kolla_mariadb_grastate.dat state=absent
changed_when: false
check_mode: no
- name: Cleaning up temp file on localhost
local_action: file path=/tmp/kolla_mariadb_recover_inventory_name state=absent
changed_when: false
check_mode: no
run_once: true