4.4. Testing the resource configuration

Procedure

1. The following command puts node z1.example.com in standby mode.

   [root@z1 ~]# pcs node standby z1.example.com

2. After putting node z1 in standby mode, check the cluster status. Note that the resources should now all be running on z2.

   [root@z1 ~]# pcs status
   Cluster name: my_cluster
   Last updated: Wed Jul 31 17:16:17 2013
   Last change: Wed Jul 31 17:18:34 2013 via crm_attribute on z1.example.com
   Stack: corosync
   Current DC: z2.example.com (2) - partition with quorum
   Version: 1.1.10-5.el7-9abe687
   2 Nodes configured
   6 Resources configured
   
   Node z1.example.com (1): standby
   Online: [ z2.example.com ]
   
   Full list of resources:
   
    myapc	(stonith:fence_apc_snmp):	Started z1.example.com
    Resource Group: apachegroup
        my_lvm	(ocf::heartbeat:LVM-activate):	Started z2.example.com
        my_fs	(ocf::heartbeat:Filesystem):	Started z2.example.com
        VirtualIP	(ocf::heartbeat:IPaddr2):	Started z2.example.com
        Website	(ocf::heartbeat:apache):	Started z2.example.com

   The web site at the defined IP address should still display, without interruption.

3. To remove z1 from standby mode, enter the following command.

   [root@z1 ~]# pcs node unstandby z1.example.com

   참고

   Removing a node from standby mode does not in itself cause the resources to fail back over to that node. This will depend on the resource-stickiness value for the resources. For information about the resource-stickiness meta attribute, see Configuring a resource to prefer its current node.