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
(cherry picked from commit dea5ae0569
)
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parent
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@ -98,6 +98,19 @@
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tags:
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- bar_create_recover_image
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- name: Galera desync the MySQL node
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shell: |
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set -o pipefail
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{{ tripleo_container_cli }} exec {{ tripleo_backup_and_restore_mysql_container }} bash -c "mysql -p -u root \
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-p{{ mysql_password.stdout }} --execute 'SET GLOBAL wsrep_desync = ON'"
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when:
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- mysql_password.stderr is defined
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- enabled_galera
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- tripleo_backup_and_restore_enable_snapshots|bool or not tripleo_backup_and_restore_service_manager|bool
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tags:
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- bar_create_recover_image
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no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
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- name: MySQL Grants backup
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shell: |
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set -o pipefail
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@ -124,6 +137,19 @@
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- bar_create_recover_image
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no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
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- name: Galera sync the MySQL node
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shell: |
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set -o pipefail
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{{ tripleo_container_cli }} exec {{ tripleo_backup_and_restore_mysql_container }} bash -c "mysql -p -u root \
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-p{{ mysql_password.stdout }} --execute 'SET GLOBAL wsrep_desync = OFF'"
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when:
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- mysql_password.stderr is defined
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- enabled_galera
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- tripleo_backup_and_restore_enable_snapshots|bool or not tripleo_backup_and_restore_service_manager|bool
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tags:
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- bar_create_recover_image
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no_log: "{{ tripleo_backup_and_restore_hide_sensitive_logs | bool }}"
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- name: Pause mysql.
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command: "{{ tripleo_container_cli }} pause {{ tripleo_backup_and_restore_mysql_container }}"
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when:
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