Insights
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OMD Labs Edition Not Affected by Recent Nagios XI Vulnerabilities
Tuesday, November 04, 2025 in Insights
OMD Labs Edition Not Affected by Recent Nagios XI Vulnerabilities Several vulnerabilities were recently disclosed in Nagios XI: CVE-2025-34286 – Remote Code Execution in the Core Config Manager (CCM) CVE-2025-34284 – Command Injection in the WinRM …
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Labs Repository GPG Key Rotation
Thursday, August 21, 2025 in Insights
Starting on August 18 2025 all .deb and .rpm files in the labs repository will use the GPG-KEY-4096 instead of the old RPM-GPG-KEY. For consistency all existing rpm and deb files have been resigned to use the new key as well. File Size ID Old …
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Tunnel SSH into an OMD server. Proof of Concept
Thursday, July 31, 2025 in Insights
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Tunneling SSH over WebSocket with GOST in an OMD server: In this blog post, we’ll walk through a proof-of-concept (POC) setup for tunneling SSH traffic over WebSocket using the GOST tool. This configuration runs inside an OMD (Open Monitoring …
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Coshsh can keep a secret
Thursday, July 17, 2025 in Insights
Coshsh, as a generator for monitoring config files, needs to know which hosts and applications make up an enterprise’s IT landscape. Usually, it fetches this information by querying a CMDB’s API. Access is typically granted by presenting …
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Forwarding Windows Eventlogs to Loki with Alloy
Thursday, February 27, 2025 in Insights
Forwarding Windows Eventlogs to a central log console In system monitoring, logs are a valuable source for detecting upcoming or existing issues. Especially for Windows, collecting all logs in one place has not been easy. Forwarding Windows event …
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Duplicate users in the Grafana database
Monday, February 10, 2025 in Insights
This issue occurred on an OMD 5.40 system running Grafana 10.4.2. A customer reported that embedded Grafana panels in the Service Detail View of Thruk were not working. Instead of a graph, they were presented with the Grafana login page. In the …
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Replacing NSClient++: A Comparison of Current Alternatives
Monday, January 13, 2025 in Insights
Many of you have probably wondered how to best replace NSClient++ with a modern tool. René Gau from ASFINAG has written a bachelor’s thesis on this very topic, providing a detailed analysis of the pros and cons of the most relevant alternatives. …
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missing perl module Digest::SHA1 under Rocky 9
Friday, January 10, 2025 in Insights
Some of you might have followed the instructions at https://labs.consol.de/repo/testing/#_9 to install the labs.consol.de repository. If you’re using a minimal setup of Rocky Linux 9, you might encounter this error message: # yum install …
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Removing old Naemon logfiles
Wednesday, June 05, 2024 in Insights
In an OMD environment Naemon writes its logfile to var/naemon/naemon.log. At midnight a logrotate job moves the logfile to the folder var/naemon/archive, renaming naemon.log to naemon.log-YYYMMDD. By default none of the archived logs is ever deleted. …
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Replacing check_http by check_curl - Lessons Learned
Friday, July 28, 2023 in Insights
In a customer’s installation we had the problem, that an http-check (using the plugin check_http) could not successfully connect to a website. $ check_http -H cts-freq.cloud -t 120 --ssl -u "/" --ssl --onredirect follow -vvv CRITICAL - …