Intel_RAID_HA_Solution_RHEL_WhitePaper

Installation Intel® RAID High Availability Solution for Red Hat* Linux Systems White Paper

Intel Confidential Revision 1.0

2.9.5 Add a Cluster Service and Assign a Resource to the Service

Add a service to the cluster with the following command:

ccs -h HA02.SH --addservice web-service domain=example_01 name=web-

service recovery=relocate

Here web-service is service name, and example_01 is cluster failover domain name.

Assign resources to the service with command –-addsubservice, for example:

ccs -h HA02.SH --addsubservice web-service ip ref=192.168.144.200

ccs -h HA02.SH --addsubservice web-service clusterfs ref=example_fs

2.9.6 Create a Disk Quorum

The disk quorum allows the cluster manager to determine which nodes in the cluster are

dominant using a shared storage disk (block device) as the medium. A shared virtual drive of at

least 10MB will need to be configured for the disk quorum device.

Perform the following steps to make a disk quorum (qdisk):

1. Create or choose a small capacity Shared VD for the disk quorum (the example

assumes a RAID 0 VD with mounting at /dev/sdb with mr_qdisk as the quorum disk

name) by running the following command:

mkqdisk -c /dev/sdb -l mr_qdisk

Figure 13. Create a Disk Quorum

2. Check whether qdisk was created on both nodes by running the following command:

mkqdisk -L

3. Use the following command to configure your system for using a quorum disk:

ccs -h host --setquorumd [quorum d options]

Refer to the cluster schema at /usr/share/cluster/cluster.rng for a complete

list of quorum disk parameters.

For example:

ccs -h HA02.SH --setquorumd label=”mr_qdisk”