Every month or so all my devices lose internet and the only way to connect them all back is to disconnect them from the DNS server that Pihole is running.
I set my Pihole to have a static IP but for some reason after around a month or maybe longer, it just fails. This has happened 4 times over the last while and the only fix is to essentially uninstall everything on my Pihole, disable it, and then reconfigure it from scratch again.
I’m not sure what’s going on so any help would be appreciated.
For infrastructure critical services I recommend reservations on the DHCP server and then set static assignment on the device for the IP reserved in DHCP. This way if the device ever fails over to DHCP for any reason the IP will not change. I'll usually also leave some small address space outside the DHCP scope available for static assignment if needed, usually at the front and usually around 20 IPs max as it's easier to let DHCP do the heavy lifting.
Static IPs are important on infra critical devices if you ever find yourself in a situation where the DHCP services are not available, you don't want them to be a single point of failure.
Just my 2 cents.