I'm having trouble getting my CentOS 5.5 EC2 instances (both i386 and x86_64) to properly populate resolv.conf after booting. No matter what I do, I end up with the default EC2 resolv.conf:
; generated by /sbin/dhclient-script
search compute-1.internal
nameserver 172.16.0.23
What I really want to do is set my own search domain and prepend two nameservers. First, I tried adding /etc/dhclient.conf:
prepend domain-name "mydomain.ec2 "
prepend domain-name-server 1.2.3.4
prepend domain-name-server 1.2.3.5
That didn't work. So I also tried placing the dhclient.conf file in /etc/dhcp/ and /etc/dhcp3. Neither worked. So I also tried creating /etc/dhclient-enter-hooks and overriding the _make_resolv_conf()_ method to prevent dhclient-script from overwriting resolv.conf:
make_resolv_conf() {
;
}
That had no impact either.
The only solution I have come up with is to add an extra init script that rewrites resolv.conf. That works, but I'd really like to do this the "right" way. What am I doing wrong?