Category Archives: Unix

Solaris 10 DNS Oops! WTF?! Oh Yeah!

When building Solaris 10 servers in bulk.. That is 1 or more at a time. I usually don’t enable any sort of name resolution until later.

That’s the problem. When later rolls around, I’ve forgotten that I hadn’t enabled anything.

This would be fine and dandy if nslookup or host would let me know that my /etc/nsswitch.conf is only looking at files. It ignores that and goes strictly with what is in /etc/resolv.conf seemingly. So if that’s broke or incorrect it will, at least, tell you that.

Bind9: Master Only

Configuration for a master only DNS server.

1. WILL NOT answer queries
2. WILL NOT forward queries
3. WILL NOT perform recursion
4. WILL allow transfers from specified slaves

Zone and configuration files are backed up disk to disk via rsync.

Single point editing of our name space.

Single point of failure. If server is lost, updates to DNS cannot be made until another master is brought online.

options {
directory “/etc”;
pid-file “/var/run/named.pid”;
version “Windows 3.11”;
allow-query {“none”; };
allow-recursion {“none”; };
notify yes;
also-notify {
IPn.IPn.IPn.IPn;
};
allow-transfer {
IPn.IPn.IPn.IPn;
};
};