openstack
/
tripleo-ansible
Code Issues Proposed changes

Online backup of the galera database must desynchronize the node before backup 

This fix aims to desynchonize the current node of the galera database to
avoid receiving any writes or syncs from the master node while the
backup is being performed, ensuring the consistency of the dump.

This procedure is specified on the product manual [1].

[1] https://galeracluster.com/library/training/tutorials/galera-backup.html

Closes-Bug: #1934654

Change-Id: I879abd53a17402a0860557d8e0e31ab0c560fcd4
This commit is contained in:
Juan Larriba 2021-07-05 11:15:25 +02:00
parent dc35ecbcdd
commit dea5ae0569
1 changed files with 26 additions and 0 deletions
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26
tripleo_ansible/roles/backup_and_restore/tasks/db_backup.yml
View File

@ -98,6 +98,19 @@
tags:
- bar_create_recover_image
- name: Galera desync the MySQL node
shell: |
set -o pipefail
{{ tripleo_container_cli }} exec {{ tripleo_backup_and_restore_mysql_container }} bash -c "mysql -p -u root \
-p{{ mysql_password.stdout }} --execute 'SET GLOBAL wsrep_desync = ON'"
when:
- mysql_password.stderr is defined
- enabled_galera
- tripleo_backup_and_restore_enable_snapshots|bool or not tripleo_backup_and_restore_service_manager|bool
tags:
- bar_create_recover_image
no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
- name: MySQL Grants backup
shell: |
set -o pipefail
@ -124,6 +137,19 @@
- bar_create_recover_image
no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
- name: Galera sync the MySQL node
shell: |
set -o pipefail
{{ tripleo_container_cli }} exec {{ tripleo_backup_and_restore_mysql_container }} bash -c "mysql -p -u root \
-p{{ mysql_password.stdout }} --execute 'SET GLOBAL wsrep_desync = OFF'"
when:
- mysql_password.stderr is defined
- enabled_galera
- tripleo_backup_and_restore_enable_snapshots|bool or not tripleo_backup_and_restore_service_manager|bool
tags:
- bar_create_recover_image
no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
- name: Pause mysql.
command: "{{ tripleo_container_cli }} pause {{ tripleo_backup_and_restore_mysql_container }}"
when: