Hi, 2007/5/17, Rich <[EMAIL PROTECTED]>: > is there a functionality (or planned functionality) in bacula to allow > two or more server instances work in a way similar to a cluster ?
no, and maybe > that would probably include two separate instances of director, storage > daemon and database that would be able to share/sync information about > jobs and job data. that's likewise an active-active cluster then, or at least if one gets that far there's not much reason to stop short of it. but, this is a feature not even most of the highend backup utilities i know easily provide. > file daemons would probably have two director access configured, with a > way to set a "preferred" one, which would always contact particular > client, except in cases when the preferred one is down. > > with an older version of bacula i have now, failed first server would > require manual reconfiguring of all clients, and it also requires > syncing data separately from bacula. > > in case of geographically distributed servers there also is no way to > tell backup jobs to go to a particular server first, so there's > increased network traffic as well. > > i've searched documentation and mailing list archives, but best i could > find was about clustered services backup. if you search the archives you might be able to find an old mail inquiring about this; as far as i remember kern stated that at the moment this would require addition of a lot of table locking which isn't there. the database syncing itself is less of an issue, but the state information can't be shared at the moment. I'm taking a stake on using a cluster-aware filesystem beneath the bacula daemons for easy failover, but this is not able to deal with 'Geocluster'-Like scenarios either. Florian ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
