Managing HP Serviceguard for Linux Ninth Edition, April 2009

IMPORTANT: Make sure you read the latest version of the HP Serviceguard Quorum
Server Release Notes before you proceed. You can find them at:
http://www.docs.hp.com -> High Availability -> Quorum Server. You
should also consult the Quorum Server white papers at the same location.
1. Remove the old quorum server system from the network.
2. Set up the new system and configure it with the old quorum server’s IP address
and hostname.
3. Install and configure the quorum server software on the new system. Be sure to
include in the new QS authorization file (for example, /usr/local/qs/conf/
qs_authfile) on all of the nodes that were configured for the old quorum server.
Refer to the qs(1) man page for details about configuring the QS authorization
file.
NOTE: The quorum server reads the authorization file at startup. Whenever you
modify the file qs_authfile, run the following command to force a re-read of
the file. For example on a Red Hat distribution:
/usr/local/qs/bin/qs -update
On a SUSE distribution:
/opt/qs/bin/qs -update
4. Start the quorum server as follows:
• Edit the /etc/inittab file to add the quorum server entries, as shown in
the latest version of the HP Serviceguard Quorum Server Version Release Notes.
• Use the init q command to run the quorum server.
Or
• Create a package in another cluster for the Quorum Server, as described in
the Release Notes for your version of Quorum Server. They can be found at
http://docs.hp.com ->High Availability ->Quorum Server.
5. All nodes in all clusters that were using the old quorum server will connect to the
new quorum server. Use the cmviewcl -v command from any cluster that is
using the quorum server to verify that the nodes in that cluster have connected to
the QS.
6. The quorum server log file on the new quorum server will show a log message
like the following for each cluster that uses the quorum server:
Request for lock /sg/<ClusterName> succeeded. New lock owners: N1, N2
7. To check that the quorum server has been correctly configured and to verify the
connectivity of a node to the quorum server, you can execute the following
command from your cluster nodes as follows:
Replacing a Failed Quorum Server System 277