I am trying to setup a caching only name server on mail gateway and wondering if I am doing it right. Here is what I have done on RHEL 5.4.
Installed RPMs:
caching-nameserver-9.3.6-4.P1
bind-libs-9.3.6-4.P1
bind-utils-9.3.6-4.P1
bind-chroot-9.3.6-4.P1
bind-9.3.6-4.P1
I have never touched the file /etc/named.caching-nameserver.conf as it says: "DO NOT EDIT THIS FILE - use system-config-bind or use an editor to create named.conf - edits to this file will be lost on caching-nameserver package upgrade."
Created the /var/named/chroot/etc/named.conf
file with the following:
Code:
options {
listen-on port 53 { 127.0.0.1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
// My primary, secondary DNS servers
forwarders {203.90.12.33; 203.90.18.21;};
forward first;
// maximum time (in seconds) for which the server will cache
// positive answers
// set to four hours.
max-cache-ttl 14400;
allow-query { localhost; };
allow-query-cache { localhost; };
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
view localhost_resolver {
match-clients { localhost; };
match-destinations { localhost; };
recursion yes;
include "/etc/named.rfc1912.zones";
};
- created a symlink and changed ownership of named.conf: ln -sf /var/named/chroot/etc/named.conf /etc/named.conf && chown root:named /var/named/chroot/etc/named.conf
- here is my /etc/resolv.conf output:
search mydomain.com
nameserver 127.0.0.1
Everything is working fine: I can resolve DNS queries using 127.0.0.1 as my DNS server.
Have I done the setup correctly? Anything I am missing?
Thanks.
