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tutorial:adm:server_os_updates [2019/12/16 15:26]
fiserp [Solving issues] 		tutorial:adm:server_os_updates [2019/12/16 15:33]
fiserp [Solving issues]
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 ==== Solving issues ==== ==== Solving issues ====
 For maintenance actions, it is necessary to: For maintenance actions, it is necessary to:
-  * Know how long each task will take.+  * Know how long each task will take and to measure the task duration when actually performing them.
     * If tasks take longer than expected, you know if you can match the maintenance window or not.     * If tasks take longer than expected, you know if you can match the maintenance window or not.
   * Know how long the whole maintenance will take (maintenance time **MT**).   * Know how long the whole maintenance will take (maintenance time **MT**).
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 Fortunately, in most cases it simply means restoring the snapshot of the virtual machine. After restoring the snapshot, you have to perform tests (with test use-cases) to confirm the rollback was performed correctly. Fortunately, in most cases it simply means restoring the snapshot of the virtual machine. After restoring the snapshot, you have to perform tests (with test use-cases) to confirm the rollback was performed correctly.
-In more complicated cases, restoring the IdM database or application WAR may be the way.+Minor issues can be generally resolved with the help of ``/boot`` and ``/etc`` backups you created before updating the OS. 
 + 
 +If IdM installation gets hit, you can debug the configuration or restore it from periodic backup. Since IdM is not installed from OS packages, this usually does not happen.
  • by fiserp