I’ve been running HA in an ESXi virtual machine now for about 8 months without a problem but about two weeks ago I noticed that the server was experiencing higher than usual load and I finally got around to looking into it and found that the culprit is my HA instance which had unusually high CPU usage.
So I checked with top to see the processes and which might be using the CPU and it turns out it’s CoreDNS that has CPU usage between 50-100%
This just randomly seems to have happened. I did not do any updates at the time when the CPU usage increased, but I have since then updated both HA Core and OS (yesterday) without any effect.
Any tips on how to fix this or further troubleshooting I should do?
I am very unfamiliar with CoreDNS so am a bit lost as to where to start