openstack/kolla-ansible
Code Issues Proposed changes

Negative seqno need to be considered when comparing seqno

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Need to consider Negative seqno to compare in some cases,
but the task does not support to do that, we need to make it work.

1.we use mariabackup to restore datas on control1, delete the
mariadb data on control2 and control3, and then use cluster recovery,
 as a result that the seqno of the other two nodes will be '-1'.

2. add one more control node into our existing mariadb cluster,
and then use cluster recovery, the seqno of the new node will be '-1'.

Change-Id: Ic1ac8656f28c3835e091637014f075ac5479d390
This commit is contained in:
fudunwei 2021-01-29 11:06:11 +08:00
parent 01c0c39fb0
commit 068f3fea50
1 changed files with 1 additions and 1 deletions
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2
ansible/roles/mariadb/tasks/recover_cluster.yml
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@ -74,7 +74,7 @@
shell: shell:
cmd: | cmd: |
if [[ ! -z {{ hostvars[inventory_hostname]['seqno'] }} && ! -z {{ hostvars[item]['seqno'] }} && if [[ ! -z {{ hostvars[inventory_hostname]['seqno'] }} && ! -z {{ hostvars[item]['seqno'] }} &&
{{ hostvars[inventory_hostname]['seqno'] }} =~ ^[0-9]+$ && {{ hostvars[item]['seqno'] }} =~ ^[0-9]+$ && {{ hostvars[inventory_hostname]['seqno'] }} =~ ^-?[0-9]+$ && {{ hostvars[item]['seqno'] }} =~ ^-?[0-9]+$ &&
{{ hostvars[inventory_hostname]['seqno'] }} -lt {{ hostvars[item]['seqno'] }} ]]; then echo {{ hostvars[item]['seqno'] }}; fi {{ hostvars[inventory_hostname]['seqno'] }} -lt {{ hostvars[item]['seqno'] }} ]]; then echo {{ hostvars[item]['seqno'] }}; fi
with_items: "{{ groups['mariadb'] }}" with_items: "{{ groups['mariadb'] }}"
register: seqno_compare register: seqno_compare