This weekend’s power outage uncovered another challenge. Netmon01 is my primary conduit into LiM, from remote locations. If the primary DNS server is down, I can’t SSH in. I don’t understand why it doesn’t fall back on the secondary server? Regardless, I configured Netmon01 as a second Slave server to Liminf03. It allows queries only from the 10.1.10.0 network, and is not given out via DHCP.
This brings us to the next issue, if liminf03 is down, systems can’t get new leases (it’s the DHCP server). That leaves me wanting to configure Netmon01 as a backup DHCP server, but since it is my own personal system, I am hesitant.