[Release] Checkmk stable release 2.4.0p12

Dear friends of Checkmk,

the new stable release 2.4.0p12 of Checkmk is ready for download.

This stable release ships with 19 changes affecting all editions of Checkmk,
5 changes for the Enterprise editions, 0 Cloud Edition specific and
1 Managed Services Edition specific changes.

Changes in all Checkmk Editions:

BI

  • 18569 FIX: BI: fix aggregation not found error for temp files…
  • 18362 FIX: Prevent Race-Condition where aggregations could be compiled twice…

Checks & agents

  • 18627 New check plug-in: Enviromux SEMS E2D…
  • 18524 OTel: Restrict cardinality of services…
  • 18568 FIX: Jolokia: handle missing metrics in agent output…
  • 18153 FIX: MKP tool: Fix IndexError: tuple index out of range…
  • 18131 FIX: Stop extreme network switch temperature check from crashing…
  • 18268 FIX: agent_prometheus: fix missing --config argument error…
  • 18532 FIX: mk-sql plugin preserve case for piggyback data…

HW/SW Inventory

  • 18049 FIX: HW/SW Inventory: Rework housekeeping job…
    NOTE: Please refer to the migration notes!

Notifications

  • 18089 FIX: Notification test: Respect exceptions in timeperiods…
  • 18088 FIX: Pushover: Use priority if configured…

Other components

  • 16730 FIX: Remove HostAddress validator…
    NOTE: Please refer to the migration notes!

Site management

  • 18152 FIX: omd cp/rename: Do not crash due to AUTOMATION_HELPER_SOCKET…

User interface

  • 18672 FIX: Alignment of y-axis labels in case graph range does not start/end at zero…
  • 18648 FIX: Fix possible loop if dashboard is cloned…
  • 18673 FIX: Improve Perf-O-Meters showing network interface throughputs…
  • 18361 FIX: Re-enabled bookmark support for parent/child topology
  • 18565 FIX: Unbreak graph selection dropdown in performance graph dashlets…

Changes in the Checkmk Enterprise Edition:

Agent Bakery

  • 18278 FIX: Agent updater/non-root agent: Lockfile race condition…

Checks & agents

  • 18589 FIX: Extension packages: Consider newly installed bakery plugins when baking…
  • 18590 FIX: Extension packages: slightly adjust file description…

Metrics system

  • 18564 FIX: Correct number of objects in title of combined graphs…

Setup

  • 17887 Support Diagnostics: Add DCD infos to the dump…

Changes in the Checkmk Cloud Edition:

NO CHANGES

Changes in the Checkmk Cloud (SaaS):

NO CHANGES

Changes in the Checkmk Managed Services Edition:

Checks & agents

  • 18356 OTel: Extend disk usage monitoring to include OTel data storage…

You can download Checkmk from our download page: Download Checkmk for free | Checkmk

List of all changes: Werks

We greatly thank you for using Checkmk and wish you a successful monitoring,

Your Checkmk Team

Hi all!
Maybe useful for somebody, recently updated my PROD to this version and I had high CPU spikes on random intervals. My PROD and TEST environments have only one difference RHEL 9.6 on PROD and RHEL 9.4 on TEST.
So, after downgrading the OS of PROD to 9.4 solved it.
Maybe something specific to my setup, maybe not. Only friendly hint is somebody has that issue.
Thanks everyone and have a good day!

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