Testing of the clustered instance

To perform cluster testing, we are going to take you through a sequence of events. In the following event, we only plan to use two Tomcat instances—tomcatnode1 and tomcatnode2. We will cover the following sequence of events:

1. 1. Start tomcatnode1.

2. 2. Start tomcatnode2 (wait for node 1 to start completely).

3. 3. Node 1 crashes.

4. 4. Node 2 takes over the user session of node 1 to node 2.

5. 5. Start node 1 (wait for node 1 to start completely).

6. 6. Node 2 and node 1 are in running state.

Now we have a good scenario with us, we will walk through how the entire process works:

1. 1. Start instance 1: tomcatnode1 starts up using the standard startup sequence. When the host object is created, a cluster object is associated with it. Tomcat asks the cluster class (in this case SimpleTcpCluster) to create a manager for the cluster and the cluster class will start up a membership service.

   Note

   The membership service is a mechanism in the cluster instance through the cluster domain,...