Hi, is it save to upgrade a multi server installtion direct from 3.2.12p1 to 3.3.0p2? If so, what sequence of installation the master, member and mirror server is the best? Best regards cmks
Don't be alarmed if you get errors about ISPC not being able to write data to tables on not yet updated nodes after you have updated the master. Those errors should disappear when the node is updated too.
It's best to enable maintenance mode during the update; this will lock out any clients that might be logged in, preventing them from making changes during the update process. When maintenance mode is enabled, only administrators can log in to the ISPConfig GUI.
