Removing application(s) makes scheduled backups fail when it was included

Bug
1

I think I have found an issue I would consider a bug as it cripples the backups.

Scenario to reproduce:

  1. Install at least an additional application
  2. Include it in a backup schedule
  3. Make sure backup is created according to schedule
  4. Remove application
  5. Observe backup failure notifications

Expected:

  1. Removed application should be removed from backup schedule automatically upon removal
  2. Backups should continue w/o backup of removed application as before.
2

with a warning status instead of Completed or Error and with a specific message into the notification body lil “was not able to backup %Container% - not present”

3

This was the email message. I repeatedly got every 3h or so

Screenshot_2026-08-25-19-08-07-02_e307a3f9df9f380ebaf106e1dc980bb6
Screenshot_2026-08-25-19-08-07-02_e307a3f9df9f380ebaf106e1dc980bb6912×1044 144 KB

4

If I might tag onto this, really, you should be able to configure “back up all installed applications.” If you later install new ones, they’ll be backed up; if you later remove one (or more), the backup will include only what’s installed. And that would address this specific issue too.

5

I can’t reproduce the issue, after removing an app it’s not available in the backup schedule and it’s not included in the backup anymore.

Please check the system logs, select cluster logs and search for “runagent” to find more details about the error.

Example log output:

2026-08-25T19:55:01+02:00 [1::runagent] checkmk3: starting backup 1 at Tue Aug 25 17:55:01 2026
2026-08-25T19:55:04+02:00 [1:checkmk3:runagent] Repository is present at path 9a76e875-0120-5d64-b642-c20ef85a3c92/checkmk/31645f3b-a2a2-4f42-9777-fef4c13f115a
2026-08-25T19:55:05+02:00 [1:checkmk3:runagent] using parent snapshot 5f68208d
2026-08-25T19:55:05+02:00 [1:checkmk3:runagent] processed 1507 files, 11.497 MiB in 0:01
2026-08-25T19:55:05+02:00 [1:checkmk3:runagent] Files:           2 new,     8 changed,  1497 unmodified
2026-08-25T19:55:05+02:00 [1:checkmk3:runagent] Added to the repository: 99.495 KiB (21.383 KiB stored)
2026-08-25T19:55:05+02:00 [1:checkmk3:runagent] Dirs:            0 new,    19 changed,   416 unmodified
2026-08-25T19:55:05+02:00 [1:checkmk3:runagent] snapshot 86931544 saved
2026-08-25T19:55:08+02:00 [1::runagent] ----------------------------------------------------------------------------------------------------------
2026-08-25T19:55:08+02:00 [1::runagent] keep 3 snapshots:
2026-08-25T19:55:08+02:00 [1::runagent] 86931544  2026-08-25 17:55:04  node1                   last snapshot  /srv/state/environment    11.497 MiB
2026-08-25T19:55:08+02:00 [1::runagent] 5f68208d  2026-08-25 17:51:13  node1                   last snapshot  /srv/state/environment    11.493 MiB
2026-08-25T19:55:08+02:00 [1::runagent] 3 snapshots
2026-08-25T19:55:08+02:00 [1::runagent] 043ad551  2026-07-17 19:01:05  node1                   last snapshot  /srv/state/environment    11.070 MiB
2026-08-25T19:55:08+02:00 [1::runagent] Applying Policy: keep 5 latest snapshots
2026-08-25T19:55:08+02:00 [1::runagent]                                                                       /srv/volumes/checkmk-app
2026-08-25T19:55:08+02:00 [1::runagent] ID        Time                 Host        Tags        Reasons        Paths                     Size
2026-08-25T19:55:09+02:00 [1::runagent] checkmk3: backup 1 completed
2026-08-25T19:55:09+02:00 [1::runagent] Backup 1 completed successfully