Specifications
Starting LifeKeeper
1. Make sure your IT department has opened the secure shell port on the corporate firewall
sufficiently to allow you to get behind the firewall. Often the machine IT allows you to get to is
not actually a machine in your cluster but an intermediate one from which you can get into the
cluster. This machine must be a Unix or Linux machine.
2. Make sure both the intermediate machine and the LifeKeeper server are running sshd (the
secure shell daemon) and that X11 port forwarding is enabled (this is usually the line
`X11Forwarding yes' in /etc/ssh/sshd_config, but if you are unsure, have your IT do this for
you.
3. From your Unix client in X, tunnel to the intermediate machine using:
ssh -X -C <intermediate machine>
The -C means `compress the traffic' and is often useful when coming in over slower internet
links.
4. From the intermediate machine, tunnel to the LifeKeeper server using:
ssh -X <LifeKeeper server>
You should not need to compress this time since the intermediate machine should have a
reasonably high bandwidth connection to the LifeKeeper server.
5. If all has gone well, when you issue the command:
echo $DISPLAY
it should be set to something like `localhost:10.0'. If it is not set, it is likely that X11
forwarding is disabled in one of the sshd config files.
6. Verify that you can pop up a simple xterm from the LifeKeeper server by issuing the command:
/usr/X11R6/bin/xterm
7. If the xterm appears, you're ready to run lkGUIapp on the LifeKeeper server using the
following command:
/opt/LifeKeeper/bin/lkGUIapp
8. Wait (and wait some more). Java uses a lot of graphics operations which take time to
propagate over a slow link (even with compression), but the GUI console should eventually
appear.
Starting LifeKeeper
All SPS software is installed in the directory /opt/LifeKeeper.
When you have completed all of the verification tasks, you are ready to start LifeKeeper on both
servers. This section provides information for starting the LifeKeeper server daemon processes. The
LifeKeeper GUI application is launched using a separate command and is described in Configuring
the LifeKeeper GUI. LifeKeeper provides a command line interface that starts and stops the
LifeKeeper daemon processes. These daemon processes must be running before you start the
LifeKeeper GUI.
210User Guide