Let us
examine how to create configure and manage an application server cluster.
Step-1
Clusters à WebSphere application server
clusters à New
Step-2
Mention the
cluster name and click Next
Step-3
Mention the
name of the first cluster member, Select the node on which cluster needs to be
created, select the template for first cluster member and click Next.
Note:- Three
options are available for selecting the template. You can create the first
cluster member by selecting already available templates with the product. (The
templates available with the application server product). The other option to
create the first cluster member is by selecting already created server as a
template. ie The member will be created similar
to the existing application server. The last option is that you can convert the
existing application server itself as a cluster member.
Difference between second and third option is that in the
case of second option existing application server will not have any change but in
the case of third option existing server itself will be converted as a cluster
member.
Step-4
Mention the
next cluster member name, select the Node on which cluster member needs to be
created and click “Add Member”. The same step can be repeated for adding
further members as per requirement. Note that here you will not get any option
for selecting the template because the first cluster member will be the
baseline for all further members which you are adding to the cluster.
After adding
member, the member will be listed in the table at the bottom of the screen.
Click Next
after adding all the members.
Step-5
This will
take you to the summary screen where you can verify all the details. Click
Finish to create the cluster and the members.
Step-6
Save and
synchronize the nodes.
You can
notice the cluster name here and the cluster will be in stopped state.
With the
above step we have created a cluster “My Cluster” with two cluster members (FirstMember,SecondMember).
Now you can
click on “MyCluster” which will take you to below screen.
Click on
Details.
Start/Stop Cluster from admin console
– Method 2
Here you can
update the weight if you want. Also notice that the members will be in stop
state. Also you can select the members and start/stop it.
Start/Stop Cluster from admin console
– Method 2
To start/stop
the cluster you can go to Clusters à WebSphere application server
clusters à Select MyCluster and the click on start/stop.
Ripplestart:
Ripplestart will restart the cluster members one by one without any downtime,
ie it will stop one member start it and then proceed with the next member.
Start/Stop Cluster from admin console
– Method 3
Go to WebSphere application servers
in the console
you will get below screen select the cluster members and then start/stop the
same.
Below screen
will give you the cluster topology.
