documentation related to wsrep_sst_auth can be confusing

[Frederic Descamps]

on http://www.percona.com/doc/percona-xtradb-cluster/resources.html, it states that "If you use rsync or xtrabackup SST, wsrep_sst_auth is not necessary unless your SST script makes use of it".

But if you use xtrabackup as SST method, it will use /usr/bin/wsrep_sst_xtrabackup provided in Percona-XtraDB-Cluster-server package. And this script also needs user password if you have a password for root@localhost.

So I don't think it depends only on the SST script used but also about the user grants on the system.

In the code of wsrep_sst_xtrabackup we can see that innobackupex uses it:

 if [ ${#AUTH[*]} -eq 2 ]; then
           INNOBACKUPEX_ARGS="${INNOBACKUPEX_ARGS} --password=${AUTH[1]}"
 fi

Cheers

[Alexey Kopytov (akopytov)]

Seems to be an XtraDB Cluster bug rather than an XtraBackup one?

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PXC-1228