[DRBD-user] DRBD Ingres issue
ipcopper.ph at gmail.com
Fri Dec 11 15:15:55 CET 2009
On Fri, Dec 11, 2009 at 6:00 PM, Mark Watts <m.watts at eris.qinetiq.com> 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 -->
>> [ingres at node2 ~]$ 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
> 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
> 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
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
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
> QinetiQ - Delivering customer-focused solutions
> GPG Key: http://www.linux-corner.info/mwatts.gpg
More information about the drbd-user