Another difference:
[mysqld]
ssl-ca=...
ssl-cert=...
ssl-key=...
But this was added after the startup of the server, so the server runs w/o SSL support.
The mysql command connects without issue, but xtrabackup fails.
This is because xtrabackup reads the mysqld section and the mysql client(s) don't.
I don't think using ssl options from the mysqld section should be used when connecting as a client.
Another difference:
[mysqld]
ssl-ca=...
ssl-cert=...
ssl-key=...
But this was added after the startup of the server, so the server runs w/o SSL support.
The mysql command connects without issue, but xtrabackup fails.
This is because xtrabackup reads the mysqld section and the mysql client(s) don't.
I don't think using ssl options from the mysqld section should be used when connecting as a client.