The specifics of a procedure for testing your cluster configuration will depend on the high availability application you are running in the cluster, but in general you can check whether the application is running and whether it fails over as follows.
Verify that the service you created is running with the
clustat command, which you can run on either cluster node. In this example, the service
example_apache is running on
Cluster Status for exampleHA @ Thu Sep 29 12:17:39 2011
Member Status: Quorate
Member Name ID Status
------ ---- ---- ------
node1.example.com 1 Online, Local
node2.example.com 2 Online
Service Name Owner (Last) State
------ ---- ----- ------ -----
service:example_apache node-01.example.com started
Check whether the service is operational. How you do this depends on the application. For example, if you are running an Apache web server, point a browser to the URL you defined for the server to see if the display is correct.
Shut down the cluster software on the node on which the service is running, which you can determine from the
Click on the cluster name beneath luci page. This displays the nodes that constitute the cluster.
from the menu on the left side of the
Select the node you want to leave the cluster by clicking the check box for that node.
Select the function from the menu at the top of the page. This causes a message to appear at the top of the page indicating that the node is being stopped.
Refresh the page to see the updated status of the node.
clustat command again to see if the service is now running on the other cluster node. If it is, check again to see if the service is still operational. For example, if you are running an apache web server, check whether you can still display the website.
Make sure you have the node you disabled rejoin the cluster by returning to the cluster node display, selecting the node, and selecting .