Is JON able to roll back the patch?

Solution Unverified - Updated -

Environment

  • Red Hat JBoss Operations Network (JON)
    • 2.4.x
  • Red Hat JBoss patch content feed applied

Issue

  • I applied a patch via JON but it does not work.  Is JON able to roll back the patch?

Resolution

  • There is no roll-back or revert function in JON as such. However, when a patch is applied, the files that were changed are backed up. The backup contains a name similar to <real-name>-<date-time>.rej. So, for example, if run.jar was replaced by the CP08 patch, then a backup would have been created in the same folder and named run.jar-20110630-0330.rej (or similar). What this could mean is that the process could be undone in a manual way:

    1. Shutdown the EAP instance;
    2. Make a complete backup of <JBOSS_HOME> folder;
    3. Undo any configuration or application updates that have been done as part of the manual steps from the upgrade;
    4. Move the backup file over the top of the updated file.

  • Alternatively, if a backup of <JBOSS_HOME> was done prior to applying the patch, a backup of the current <JBOSS_HOME> could be performed and then delete <JBOSS_HOME> and restore from the backup that was done prior to applying the patch.

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