Performing controlled failover of SIP applications

You can take an active application out of the loop via a controlled failover.

Before you begin

SipContainerMBean is used to initiate a server quiesce through wsadmin (command line interface). This MBean is used to set the container's weight to 0, which prevents new messages from being routed to it.

WebSphere® Application Server PMI is used to monitor the server's active sessions. The remaining active sessions can be watched by enabling a counter on the server being quiesced. The server can be shut down once the number of active sessions reaches an acceptable level. A script can be written to monitor active sessions and shut down the server when an acceptable threshold is achieved.

About this task

Quiescing a single server

  1. On an ND machine, start the wsadmin utility:
    1. Go to <nd_installation_path>/bin
    2. Run the command: ./setupCmdLine.sh
    3. Run the command: ./wsadmin.sh
    4. Verify that received: wsadmin>
  2. Run the command: set scBean [$AdminControl queryNames type=SipContainerMBean,process=<server name>,*]
  3. Run the command: $AdminControl invoke $scBean quiesce true

From the admin console, command line or scripts

Use the following commands to stop application servers from the admin console, command line or scripts:
  • Stop: Quiesces the application server. The sessions will failover to another server. It is important to manually quiesce the server on shutdown.
  • Immediate Stop: Stops the server, but bypasses the normal server quiesce process that supports in-flight requests to complete before shutting down the entire server process. This shutdown mode is faster than the normal server stop processing, but some application clients can receive exceptions.
  • Terminate: Deletes the application server process. Use this if immediate stop fails to stop the server.



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Last updated: Oct 20, 2010 7:53:43 PM CDT
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