I am so much of a newbie that my first Raspi is purchased but not yet up and running. However, I am keen to use Pi-Hole on my home network, and am starting to think about configuration.
The setup is Virgin Hub 3.0 (spit), and currently there are 10 devices with DHCP leases - computers, phones, Wifi Extender, set-top box, ATA, and there will doubtless be others. There are two main people using the network - me, and my partner who is less techy than me and relies on the network for work - and we also have the occasional visitor device on the network.
So I understand I will need to disable DHCP on the Hub, and use the DHCP server on Pi-Hole. My concern is that the Raspi might crash due to SD card corruption when I am not around, leaving my partner unable to access DNS, and me in the dog house. I would also prefer to keep the IP address configuration as simple as possible, and all server-side.
I understand about using good quality SD cards with plenty of room, and a good power supply, but there is still the possibility of failure, and I was wondering about the best DHCP configuration to mitigate that risk.
From a bit of reading around, my thought is that it would be simple and robust to allocate all IP addresses dynamically, but give them a good long lease - maybe a month. In the case of the Raspi/Pi-Hole failing in some way, that would at least give me plenty of time to talk someone through connecting to the Virgin Hub from any existing client to reactive DHCP on the Hub - which should then give all clients access to Virgin's DNS servers and restore Internet access.
Does that sound like a sensible plan, or are there fatal flaws, or better alternatives? One thing I am unsure about is how the lease time might be implemented/interpreted on all the various devices on the network in the absence of the actual DHCP server,
Thanks for any help.