Error message:
Agent exited with code 1: HTTPSConnectionPool(host=‘192.168.11.65’, port=443): Max retries exceeded with url: /sdk (Caused by NewConnectionError(‘<urllib3.connection.HTTPSConnection object at 0x7f65a3868e00>: Failed to establish a new connection: [Errno 111] Connection refused’))
A few weeks ago I set up a new CheckMK server and added some of our workstations (Windows, Linux) as hosts. Everything worked fine. In the meantime I have been busy with other things and have only made a few adjustments from time to time.
Today I wanted to continue with the configuration and realised that the connection test fails for the three Linux hosts (Debian, Ubuntu). I am very sure that it worked last time. I have no idea what I should have changed in the meantime that would result in this. Very strangely, it also affects the connection to the agent of the CheckMK server itself.
I did some tests on the Checkmk server, which is also affected, and they were all ok.
sudo cmk-agent-ctl status → Agent responds correctly
sudo ss -tulpn | grep 6556 → Agent listens on port 6556
sudo systemctl status check-mk-agent.socket → also ok
Does anyone have any idea what could be causing this?
Many thanks in advance!
Type of agent:
Program: /omd/sites/neutron/share/check_mk/agents/special/agent_vsphere -u checkmk ‘-s=UwyDs#DW5’ -i hostsystem,virtualmachine,datastore,counters --direct --hostname lnx2 -P --spaces cut --no-cert-check 192.168.11.65
Process piggyback data from /omd/sites/neutron/tmp/check_mk/piggyback/lnx2
And there you have it: The special agent for monitoring a vSphere infrastructure is assigned to the host, overriding the default agent query on port 6556.
You need to refine the conditions in the rules for the vSphere monitoring.
