Is it possible to change the hostnames in checkmk?
We have a few Azure ones that were created before I took over and I’d like to change these.
Hi,
sure you can rename hosts, but if you are having a lot of hosts and a long running site i would recommend to not do that.
In that case i would clone the hosts and delete the wrong ones instead, but be aware that you are losing historical and performance data.
look at the menu…
This looks great but I can’t find this. Where is this menu?
I found it! Thanks for the prompt.
If I re-name an azure host would all the rules update accordingly with that name?
That’s in the same sense if re-naming any host I guess.
This is an example of what is renamed when you rename a host
Renamed 1 host at the following places:
- Disovered services of the host
- Cached output of monitoring agent
- File with performance counter
- Folder
- Monitoring history entries (events and availability)
- Disovered host labels of the host
- History of hardware/software inventory
- Piggyback information for other hosts (23 times)
- The current monitoring state (including acknowledgements and downtimes)
- RRD databases with performance data
- RRD updates in journal of RRD Cache
- UUID links for TLS-encrypting agent communication
- Host and service configuration rule (2 times)
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to add to this, there are very few places (not often used) where the rename does afaik not work:
- notification rules explicitly filtering for one host
- overlapping clusters rule where the hostname is part of the rule value and not the rule condition
- any rules you might have that match the host with a regex - that regex is of course not changed
2 Likes
So basically what you’re saying is if I re-name a host the rules to which were applied to it will change also. i.e if it is used as an explicit host in a rule this will change also?
yes, with the exceptions that Gerd wrote