Re: How are you monitoring ESXi hosts using Nagios XI
Posted: Wed Nov 12, 2025 6:26 pm
Hello,
I'm glad my explanation was able to help! As to the issue with entropyd being unknown when you specifically run the command for it, my hypothesis is that the plugin uses the .upper() python method on all subcommands. This is causing it to look for "ENTROPYD" instead of "entropyd" (as seen from the output from your 2nd command) thus why it works for TSM since its naturally all uppercase. When I dug into the plugin about why is returns OK for unknown and down I found that specific check has no logic to return any other status code. This means no matter what its hard coded to just return OK. I will write up issues for these I am unsure of when they will get patched, but if you have some coding knowledge and want to try and fix it yourself that is another option. Again these are my hypotheses from glancing at the code for a little bit, but I hope it gives you a little more insight on what's going on here.
- Caleb
I'm glad my explanation was able to help! As to the issue with entropyd being unknown when you specifically run the command for it, my hypothesis is that the plugin uses the .upper() python method on all subcommands. This is causing it to look for "ENTROPYD" instead of "entropyd" (as seen from the output from your 2nd command) thus why it works for TSM since its naturally all uppercase. When I dug into the plugin about why is returns OK for unknown and down I found that specific check has no logic to return any other status code. This means no matter what its hard coded to just return OK. I will write up issues for these I am unsure of when they will get patched, but if you have some coding knowledge and want to try and fix it yourself that is another option. Again these are my hypotheses from glancing at the code for a little bit, but I hope it gives you a little more insight on what's going on here.
- Caleb