4.4.6. Installing Patches


This procedure should only be followed with the advice and guidance of a Continuent Support Engineer.

There are two ways we can patch the running environment, and the method chosen will depend on the severity of the patch and whether or not your use case would allow for a maintenance window

  • Upgrade using a full software update following the standard upgrade procedures

  • Use the patch command to patch just the files necessary

From time to time, Continuent may provide you with a patch to apply as a quicker way to fix small issues. Patched software will always be provided in a subsequent release so the manual patch method described here should only be used as a temporary measure to patch a live installation when a full software update may not immediately be possible

You will have been supplied with a file containing the patch, for the purpose of this example we will assume the file you have been given is called undeployallnostop.patch

  1. Place cluster into maintenance mode

  2. On each node of your installation:

    1. Copy the supplied patch file to the host

    2. From the installed directory (Typically this would be /opt/continuent) issue the following:

      shell> cd /opt/continuent/tungsten
      shell> patch -p1 -i undeployallnostop.patch

  3. Return cluster to automatic mode


If a tpm update --replace-release is issued from the original software staging directory, the manual patch applied above will be over-written and removed.

The manual patch method is a temporary approach to patching a running environment, but is not a total replacement for a proper upgrade.

Following a manual patch, you MUST plan to upgrade the staged software to avoid reverting to an unpatched system.

If in doubt, always check with a Continuent Support Engineer.