JGroups Troubleshooting Techniques: Difference between revisions

From NovaOrdis Knowledge Base
Jump to navigation Jump to search
No edit summary
Line 26: Line 26:
:[[JGroups Protocol FD SOCK#VIEW_CHANGE|FD_SOCK VIEW_CHANGE reporting]]
:[[JGroups Protocol FD SOCK#VIEW_CHANGE|FD_SOCK VIEW_CHANGE reporting]]
</blockquote>
</blockquote>
=Practical Ways to Determine the Current View=
* [[JGroups Protocol GMS#Current_Group_Membership|Group Membership based on GMS log entries]]
* [[JGroups Protocol FD_SOCK#VIEW_CHANGE|Group Membership based on FD_SOCK VIEW_CHANGE log entries]]
* [[WildFly CLI - Obtaining the Current JGroups View|Current view obtained with the WildFly CLI]]

Revision as of 03:50, 5 March 2016

Internal

Verbose Logging

Suspend JVM Execution

A JVM running JGroups can be suspended from executing by sending the SIGSTOP signal into it:

kill -SIGSTOP <jvm-pid>

Execution can be later resumed by sending SIGCONT:

kill -SIGCONT <jvm-pid>

Also see SIGSTOP and SIGCONT.

Quickly Review View Changes

FD_SOCK VIEW_CHANGE reporting

Practical Ways to Determine the Current View