Latest Troubleshooting topics

Topic	Replies	Views	Activity
Troubleshooting FAQ This is a Wiki topic for troubleshooting Checkmk. Feel free to contribute! Template for troubleshooting posts Here is the post template that you can use to make your issue clearer to everyone. Just edit out the sample p…	0	5138	October 31, 2019
About the Troubleshooting category	0	1802	September 26, 2019
Suche nach Hosttags in 2.5	1	10	September 10, 2026
Capturing vs. non-capturing groups in process discovery	1	45	September 10, 2026
Rittal CMC Checks vanish after update to 2.5	1	15	September 10, 2026
Checks appearing where they shouldnt checkmk-appliance	18	200	September 9, 2026
Version mismatch in the UI	2	26	September 9, 2026
Deploying plugins from agent bakery logwatch	2	39	September 9, 2026
Acme Device SNMP Plugin Errors After 2.5 update checkmk-v2 , checkmk-v2-1 , checkmk-v2-2 , checkmk-v2-5	4	72	September 8, 2026
Internal Server Error: KeyError: 'notify_users'.	0	21	September 8, 2026
Missing the port specification checkbox in Service Monitoring Rules -> Network Interfaces and Switch Ports	6	55	September 8, 2026
Understanding agent timeouts and caching for mk-sql and other plug-ins	0	19	September 8, 2026
HW/SW Inventory is "updated" with identical values checkmk-v2-4	2	28	September 8, 2026
Oracle plugin sql check crashing after upgrade to checkmk 2.4 checkmk-raw	6	63	September 8, 2026
SNMP issue even snmp test is successful checkmk-raw	1	38	September 8, 2026
Testing CMK 2.5 - Windows host agent extremely slow checkmk-enterprise	3	54	September 8, 2026
Updated to 2.5.0p2 - Parsing of section qmail_stats/iis_app_pool_state failed checkmk-enterprise , robotmk	8	187	September 8, 2026
Agent Updater Error on Windows Server checkmk-enterprise	3	37	September 7, 2026
Interface graphs transiently disappear and Interfacexxxxx.xml size shrinks checkmk-raw , checkmk-v2-4	3	59	September 7, 2026
No oracle agent Data delivered to checkmk Server	9	100	September 7, 2026
Check_httpv2 cert check on own CA webservices: error trying to connect: invalid peer certificate: UnknownIssuer checkmk-raw , checkmk-v2	54	6955	September 4, 2026
Service check interval and notification checkmk-raw , notifications , checkmk-v2	4	63	September 4, 2026
Renamed site, now CheckMK URL appends domain.com to the requests.	0	25	September 4, 2026
Error "Item not found in monitoring data" when running local checks	2	117	September 2, 2026
Check_mk and Check_mk_discovery service always time out checkmk-raw	1	46	September 1, 2026
ALERT-to-OK Notifications sent with no previous OK-to-ALERT notification due to delay rules notifications	1	39	September 1, 2026
Special_ibmsvc - OpenSSL Version Mismatch Error on 2.5.0p10	7	104	August 31, 2026
NagVis hover popup missing service list and status after update to 2.4.0p30 nagvis	5	109	August 31, 2026
Problem with Veeam v13 backup check	2	95	August 29, 2026
Main Dashboard graph metrics missing after updating the Linux Agent to 2.4.0p35 checkmk-enterprise	3	54	August 28, 2026

Troubleshooting FAQ

This is a Wiki topic for troubleshooting Checkmk. Feel free to contribute! Template for troubleshooting posts Here is the post template that you can use to make your issue clearer to everyone. Just edit out the sample p…