Shortly after the upgrade to 2.4.0 the three graphs:
went missing and show no data anymore:
The machine has the host label cmk/check_mk_server:yes still correctly assigned and detected, the agent is running on the server.
omd status on the server lists everything as running
So no obvious problem is visible (to me) and it was working without such problems until 2.4.0.
The machine has the host label
cmk/check_mk_server:yesstill correctly assigned and detected, the agent is running on the server.
Is there also a āSite YOURSITE statisticsā service for this host?
I have got same issue. This started with latest Beta but I thought I did some something wrong.
In latest beta my checkmk server didnt recognised omd services anymore except āomd statusā
Yea the agent on the host your running checkmk needs to be 2.4 as well and needs to be working 100%
There are indeed a few checks missing, just like @ampfinger mentioned below thereās just the āomd statusā left:
Not sure how you can install the agent to ānot work 100%ā like also mentioned below.
If I downgrade to a 2.3.0 agent:
# apt install /root/check-mk-agent_2.3.0p31-1_all.deb
The checks reappear:
And as soon as I upgrade to a 2.4.0 agent:
# apt install /root/check-mk-agent_2.4.0-1_all.deb
They go missing again:
Hello @tgurr,
so we have the following situation?
site @ 2.3.0 && agent @ 2.3.0 site @ 2.4.0 && agent @ 2.3.0
site @ 2.4.0 && agent @ 2.4.0Which exact version(s) have you used for the site?
Sunny Greetings and thank you
Hartmut
Just to get full picture:
With agent 2.4.0b4 all services are available. After installing 2.4.0b5 (and final 2.4.0) agent they are going away.
Tested all betas and final 2.4.0 site versions.
Exactly, versions are like stated above
before the upgrade:
working: site 2.3.0_p27 + agent 2.3.0_p27
after the upgrade:
working: site 2.4.0 + agent 2.3.0_p31
not working: site 2.4.0 + agent 2.4.0
Additional info, comparing the agents and replacing the sections/functions section_omd() and section_omd_core() with the code from agent 2.3.0_p31 makes things work again, at least partially like the services are discovered again and the graphs are displayed, not sure if theyāre updated correctly as least for the third one:
Attaching the diff:
check_mk_agent_omd.diff.txt (6.7 KB)
So I suppose thereās something in the change in regards of those two functions, I didnāt compare 2.4.0b4 vs. 2.4.0b5 (yet).
Thank you, @tgurr and @ampfinger.
This looks like a bug. I will create an internal ticket to follow up on this.
We will keep you posted here.
Hi @tgurr and @ampfinger !
So far, we canāt reproduce this issue. Even in an upgrade scenario.
This means that you are currently our only source for debugging this 
The relevant change from 2.3 to 2.4 in the agent is this part (taken from your diff):
for sitedir in /omd/sites/*; do
- site_version="$(basename "$(realpath "${sitedir}/version")")"
site=${sitedir#/omd/sites/}
- for topic in "broker" "mknotifyd" "apache" "diskusage"; do
- script="/omd/versions/${site_version}/bin/cmk-monitor-${topic}"
- [ -x "${script}" ] && sudo --non-interactive --user="${site}" "${script}"
- done
So, for example for the omd diskusage Service, the agent calls sudo --non-interactive --user=<site_name> /omd/versions/<site_version>/bin/cmk-monitor-diskusage
This logic was completely different in the 2.3 agent.
The reason for this change is the new ability to run the agent under a non-root user.
May I kindly ask you to do some tests?
~/bin/cmk-monitor-diskusage exist on your 2.4 site?sudo --non-interactive --user=<site_name> /omd/versions/<site_version>/bin/cmk-monitor-diskusage (of course with correct site version and name inserted) work when called as root? Normally, root should be allowed to call every sudo command. Maybe some sudoers setting on your machine prevents the call from performing correctly?omd_diskusage section in there? The call of cmk-agent-ctl dump | grep "<<<omd_diskusage" -A10 should yield some output (more than just the section header)Thanks in advance!
Ah maybe I found the issue and I can reproduce it!
Iām running checkmk on proxmox in a lxc container. So far nothing special but I donāt have installed sudo because I donāt need it at the moment.
After installing sudo it works as before! Rechecked it with uninstalling sudo and boom - it stopped working.
So with installing sudo everything is fine.
Maybe there should be check before installing if sudo is installed?
More or less the same issue here, installed on Debian 12 via the regular packages:
check-mk-agent_2.4.0-1_all.deb
check-mk-enterprise-2.4.0_0.bookworm_amd64.deb
nothing pulled in sudo, after manually installing sudo
# apt install sudo
the graphs are shown and the services donāt go missing on discovery.
Thanks! Thatās very helpful.
exactly the same on my site (debian12) upgrade site and agent from 2.3 to 2.4 - no graphs
install sudo - graphs are back again
rg
Christian
The werk didnāt make it to p1 unfortunately. It will come with p2, hopefully next week then.
Thus, in the meantime, installing sudo is the simplest workaround.
Apologies.
I am also having an issue with those three graphs not displaying info. I am on a rhel9 machine, sudo is already there, but this only happens with one site. If I disable the site I can see the graphs, it I reenable it the graphs go away. If I sign into the site directly the graphs are not there either.