On Fri, Dec 11, 2009 at 6:00 PM, Mark Watts <[email protected]> wrote: > On Fri, 2009-12-11 at 13:25 +0800, jan gestre wrote: >> Hi Guys, >> >> I'm trying to configure a HA cluster using DRBD and RHEL cluster >> suite, I'm currently in the DRBD stage wherein I'm testing the manual >> failover and I'm having problems/difficulties resolving this one. >> >> I've /dev/drbd0 on both node1 and node2 and it's mounted as primary on >> node1, I was able to install Ingres 9.3 on node1 using /dev/drbd0 as >> install location however when I try to mount it node2, I can't start >> Ingres --> >> >> [ing...@node2 ~]$ ingstart >> >> Ingres/ingstart >> >> No Ingres servers have been configured to start up. >> >> I hope someone here can help me out. > > > Are you running in Primary/Secondary mode or Primary/Primary?
node1 was running as Primary/Secondary before I demoted it as Secondary/Secondary > > If the former (which is most common), you'd need to make sure you've > flipped the mount point to node2 before you try anything. > I unmounted /dev/drbd0 on node1 after demoting it to secondary then promoted node2 to Primary. > Also, there's an assumption that anything not located on the shared > volume (anything in /etc for example) is also installed on the second > node. > > > For example, when we do this with MySQL or PostgreSQL, we install the > regular distro packages on both nodes, then manually move the database > directory to the shared storage and symlink it on both nodes. The > Secondary node will have a dangling symlink until the filesystem is > mounted, but this is OK since heartbeat will manage mounting the > filesystem and starting the database service in the correct order for > us. > It's easy if it's MySQL or PostgreSQL because you just move the database location but it's not like that with Ingres, it's treated as a third party software wherein the default install location is the /opt directory. In my case instead of the default I installed Ingres on the drbd partition (system files and database, it doesn't put files on /etc). I'm using as guide the Ingres HA cluster documentation wherein my shared drive is my drbd partition, the problem is I can't even get it to work manually much more automatically. > > -- > Mark Watts BSc RHCE MBCS > Senior Systems Engineer, Managed Services Manpower > www.QinetiQ.com > QinetiQ - Delivering customer-focused solutions > GPG Key: http://www.linux-corner.info/mwatts.gpg > _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user
