For a large cell, multiple coordinators are recommended.
Before you begin
Before you change the number of core group coordinators for
a cell:
- Make sure that you are familiar with the content of the topic Core group coordinator.
- Determine the number of coordinators for the core group. A general
guideline is approximately one coordinator per 20 core group members.
About this task
Change the number of core group coordinators only if:
- IBM® support instructs you to do so.
- You are directed to do so as part of the installation process
for another WebSphere® product.
- The coordinator process is consuming abnormally high amounts of
memory or CPU resources.
- You are scaling up the number of servers in a cell.
To change the number of core group coordinators for a core
group:
Procedure
- In the administrative console, click , and select an existing core group.
- In the Number of coordinators field, specify the
number of coordinators that you want for this core group.
- Click OK, and then click Save.
- Click Synchronize changes with nodes and then click Save again to save your changes.
- If you need to change the list of preferred coordinator
servers, click Preferred coordinator servers and then add or
delete the appropriate application servers from the list of preferred
coordinator servers.
- Click OK and then clickReview.
- Select Synchronize changes with nodes, and then
click Save.
Results
Your changes take effect immediately after synchronization
completes. The members of the core group pick up these changes dynamically.