Overcloud backup fails on desync Galera

Issue

openstack overcloud backup --inventory /home/stack/tripleo-inventory.yaml fails on Galera desync the MySQL node task.

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Here are the common uses of Markdown.

Code blocks

~~~
Code surrounded in tildes is easier to read
~~~

Links/URLs

[Red Hat Customer Portal](https://access.redhat.com)