Re: [Bacula-users] clustered bacula servers
On 2007.05.17. 23:52, Florian Heigl wrote: 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. i haven't verified this, but i was told tivoli does this ;) 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. quite useful feature also would be the ability to set preferred server for cases when services are geographically distributed alongside backup servers. i'll try to submit a correct feature request as martin suggested (even though this probably is worst time to do so :) ) Florian -- Rich - 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
[Bacula-users] clustered bacula servers
is there a functionality (or planned functionality) in bacula to allow two or more server instances work in a way similar to a cluster ? 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. 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. -- Rich - 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
Re: [Bacula-users] clustered bacula servers
On Thu, 17 May 2007 13:23:46 +0300, Rich said: is there a functionality (or planned functionality) in bacula to allow two or more server instances work in a way similar to a cluster ? I don't think so, but you could submit it http://www.bacula.org/?page=feature-request. 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. 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. I don't think clients would need to be reconfigured. The Director Name in the bacula-fd.conf is arbibrary (can be different from the hostname), so a new Director can be started on a different machine with the original name. You could use admin jobs to schedule the syncing of data. __Martin - 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
Re: [Bacula-users] clustered bacula servers
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
