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tutorial:adm:server_os_updates [2019/12/17 07:46] fiserp [Performing the OS update] |
tutorial:adm:server_os_updates [2019/12/17 07:49] fiserp [Solving issues] |
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- Perform the update | - Perform the update | ||
- Begin the maintenance. | - Begin the maintenance. | ||
+ | - Disable monitoring system notifications. | ||
- (If you use hot snapshots, make one.) | - (If you use hot snapshots, make one.) | ||
- Make sure no user or external application can access the IdM. | - Make sure no user or external application can access the IdM. | ||
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- (If there were changes to the database (e.g. PostgreSQL major version upgrade), make a backup of the upgraded database.) | - (If there were changes to the database (e.g. PostgreSQL major version upgrade), make a backup of the upgraded database.) | ||
- Allow users to access the IdM. | - Allow users to access the IdM. | ||
+ | - Enable monitoring system notifications. | ||
- End the maintenance. | - End the maintenance. | ||
- Wrap-up | - Wrap-up | ||
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* Know how long (at worst) the whole rollback will take (rollback time **RT**). | * Know how long (at worst) the whole rollback will take (rollback time **RT**). | ||
* Have a maintenance window that spans at least **MT**+**RT** with some extra time **ET**. | * Have a maintenance window that spans at least **MT**+**RT** with some extra time **ET**. | ||
- | * You are not able to safely perform the maintenance in shorter window, there is simply not enough time. If something goes wrong, you need at most **RT** time to perform the rollback! | + | * You are not able to safely perform the maintenance in shorter window, there is simply not enough time. If something goes wrong, you will need **RT** time to perform the rollback! |
* If you do not have any **ET**, if anything goes wrong you have to perform rollback procedure. Therefore, **ET** gives you some time you can spend on solving the issue so you can carry on with updates. | * If you do not have any **ET**, if anything goes wrong you have to perform rollback procedure. Therefore, **ET** gives you some time you can spend on solving the issue so you can carry on with updates. | ||