Handle empty passwords in wsrep_sst scripts

[Raghavendra D Prabhu]

As the title says, handle it.

[Raghavendra D Prabhu (raghavendra-prabhu)]

"
        if [ "${AUTH[0]}" != "(null)" ]; then
           INNOBACKUPEX_ARGS="${INNOBACKUPEX_ARGS} --user=${AUTH[0]}"
        fi

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

"

I think the above can be removed. If there is any user/pass required it should be passed through my.cnf.

It should be removable for mysqldump too IMO. mysqldump doesn't even take empty password. Also, if required it can be passed through [mysqldump] in my.cnf.

If both those aren't required, what is the point of wsrep_sst_auth?

[Raghavendra D Prabhu (raghavendra-prabhu)]

Some people may want to use a different user for innobackupex in
root:root 600 file which is !included. So, credentials for the
SST user can be put there.

So, I guess the settings can stay.

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PXC-1357