#!/bin/sh
echo This script will automatically configure your machine to run a
echo DNS server. It will completely destroy /etc/resolv.conf, and
echo either /etc/named.boot, or /etc/named.conf, as appropriate
echo It may also modify /etc/nsswitch.conf if neccessary.
echo "Continue? (y/n)"
read ans
if [ "$ans" != "y" -a "$ans" != "Y" ] ; then
echo Quitting
exit 0
fi
OSREV=`uname -r`
case OSREV in
5.3|5.4|5.5|5.6|5.7|5.8)
NAMEDCF=/etc/named.boot
;;
*)
NAMEDCF=/etc/named.conf
;;
esac
if [ -f /etc/resolv.conf ] ; then
cp /etc/resolv.conf /etc/resolv.conf.pre-config
echo copied /etc/resolv.conf to /etc/resolv.conf.pre-config
DOMAIN=`grep domain /etc/resolv.conf | awk '{print $2}'`
fi
if [ "$DOMAIN" = "" ] ; then
DOMAIN=`domainname`
fi
if [ "$DOMAIN" != "" ] ; then
echo domain $DOMAIN >/etc/resolv.conf
else
echo >/etc/resolv.conf
fi
echo nameserver 127.0.0.1 >>/etc/resolv.conf
echo Made /etc/resolv.conf
############################################################
#dump the old-style config file to stdout.
# It belongs in /etc/named.boot
############################################################
oldnamedcf(){
cat <<EOF
; This is the config file for an old BIND4.9.1 name demon
directory /etc/named
primary 0.0.127.in-addr.arpa named.local
cache . named.cache
EOF
}
############################################################
#dump the new-style config file to stdout.
# It belongs in /etc/named.conf
############################################################
namedcf()
{
cat <<EOF
options {
directory "/etc/named";
# use 127.0.0.1 if you are an isolated machine. Otherwise, either
# comment out the "listen-on" line entirely, or supply the appropriate
# internal or external address
listen-on { 127.0.0.1; };
};
zone "." in {
type hint;
file "named.cache";
};
zone "0.0.127.in-addr.arpa" in {
type master;
file "named.local";
};
EOF
}
############################################################
# This is the list of all "root" namesservers.
# Or in this case, enough of them for you to be okay
############################################################
dumpcache()
{
cat <<EOF
;The latest version of this file can always be found at
; ftp://FTP.RS.INTERNIC.NET/domain/named.root
;
. 3600000 IN NS A.ROOT-SERVERS.NET.
A.ROOT-SERVERS.NET. 3600000 A 198.41.0.4
. 3600000 NS B.ROOT-SERVERS.NET.
B.ROOT-SERVERS.NET. 3600000 A 128.9.0.107
. 3600000 NS C.ROOT-SERVERS.NET.
C.ROOT-SERVERS.NET. 3600000 A 192.33.4.12
. 3600000 NS D.ROOT-SERVERS.NET.
D.ROOT-SERVERS.NET. 3600000 A 128.8.10.90
. 3600000 NS E.ROOT-SERVERS.NET.
E.ROOT-SERVERS.NET. 3600000 A 192.203.230.10
. 3600000 NS F.ROOT-SERVERS.NET.
F.ROOT-SERVERS.NET. 3600000 A 192.5.5.241
EOF
}
############################################################
# This just makes the reverse-lookup for "localhost" work
# Put in named.local
############################################################
dumplocal()
{
cat <<EOF
;
; Loopback to convert 127.0.0.1 to localhost
;
@ IN SOA localhost. root.localhost. (
94112201 ; serial (yymmddxx)
86400 ; refresh every day
3600 ; retry every 1 hour
3600000 ; expire after 1000 hours
3600000 ; default ttl is 1000 hours
)
;
; Name Server
;
IN NS localhost
1 IN PTR localhost.
localhost. IN A 127.0.0.1
EOF
}
# Your /etc/nsswitch.conf may need tweaking. This routine takes
# care of the details
modswitch(){
hosts=`grep '^hosts:' /etc/nsswitch.conf`
hasdns=`echo $hosts | grep 'hosts:.*dns'`
notfoundcheck=`echo $hasdns | grep NOTFOUND`
hasnis=`echo $hosts | grep nisplus`
if [ "$hasnis" != "" ] ; then
echo ""
echo "****WARNING****: your nsswitch.conf has nisplus for hosts"
echo "please add 'dns' by hand to the hosts line"
echo "In my opinion, best placement is"
echo "hosts: files nisplus dns"
echo ""
return
fi
if [ "$hasdns" != "" -a "$notfoundcheck" = "" ] ; then
echo nsswitch.conf already okay
return
fi
sed 's/(hosts:.*)/hosts: files dns/' /etc/nsswitch.conf >/tmp/ns.$$
mv /tmp/ns.$$ /etc/nsswitch.conf
echo /etc/nswitch.conf updated
}
mkdir /etc/named
dumplocal >/etc/named/named.local
dumpcache >/etc/named/named.cache
if [ -f $NAMEDCF -a ! -f $NAMEDCF.bak ] ; then
cp $NAMEDCF $NAMEDCF.bak
echo copied $NAMEDCF to $NAMEDCF.bak
fi
if [ "$NAMEDCF" = "/etc/named.boot" ] ; then
oldnamedcf >$NAMEDCF
else
namedcf >$NAMEDCF
fi
modswitch
echo Restarting namedemon
kill `cat /etc/named.pid` 2>/dev/null
sleep 1
/usr/sbin/in.named
echo 'As soon as your internet link is up, you should be set to go!'
if [ "$NAMEDCF" = "/etc/named.conf" ] ; then
echo 'Please note: This script assumes you are setting up a single isolated'
echo 'machine. If this machine needs to allow others to query DNS through it,'
echo 'please read the comments in /etc/named.conf'
fi
echo ''
JavaScript
복사