[Release] Checkmk stable release 2.4.0p15

[_rb]

@foobar

Werk #18859: HTML email: Migrate old ‘From’ format

This is the fix for the problem mentioned in this thread:

Problem with Notification-Rule-Conversion when upgrading from CMK 2.3 -> 2.4p15

Hi, JFI: We experienced in 2 instances, that coming from CMK 2.3 that notification-rules weren’t properly converted (the notification-plugin-params got lost, messages from cmk-update-config for that appeared in the update.log ). We contacted support, which could reproduce the problem and informed the Devs to fix. So probably best to keep a copy of your notifications.mk or to make some screenshots before doing an upgrade/update, currently Micha

Investigation on this is still ongoing:

[Release] Checkmk stable release 2.4.0p15

Got Broken Notifications after update but got them fixed: Hi, we are using customised Notification Scripts for OpsGenie/Jira - after the Update from 2.4.0p13 to 2.4.0p15 (skipped p14 due to the BI Break) we observed, that no more OpsGenie Calls or Tickets in Jira are triggered, after some debugging we found, that in the Notification Rules the Select Parameters field was filled, but if you clicked on Edit the Fields where all empty [image] after we toggled the Parameters Field with an other r…

We could not reproduce the issue yet and @Gav is waiting for an answer from @Holger to get more details.