Werk #19858: proxmox_ve_backup_status: tolerate clock skew in backup age

Component	Checks & agents
Title	proxmox_ve_backup_status: tolerate clock skew in backup age
Date	Apr 23, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.6.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.5.0p1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

The Proxmox VE backup status check crashed with ValueError: Cannot render negative timespan when the monitored host's clock was slightly ahead of the monitoring site, pushing the computed backup age into negative territory.

The computed age is now clamped to zero so render.timespan keeps working across minor clock skew.

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