pt-online-schema-change does not allow to specify user to check slave if --recursion-method processlist or host is used

[Sveta Smirnova]

There is no way to specify custom user for pt-osc to check slave if recursion-method processlist or host is used.

This is feature request.

Suggested fix: add option --slave-user or similar

[Sveta Smirnova (svetasmirnova)]

Fix together with bug #1595912

[Sveta Smirnova (svetasmirnova)]

Why this feature is needed?

Currently if I have, say, two servers Master -> Slave I can have full privileged user with name, say, ptosc on master and less privileged user with same name on slave.

But if I have to switch master and slave (in case of failover, for example) I will end up with less privilege user on new master and would not be able to run pt-osc. Workaround for this situation: have highly privileged user on all servers for pt-osc, but this is security breach.

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PT-1366