https://wiki.archlinux.org/index.php/BIND
sudo pacman -S bind
nameserver 127.0.0.1
We are using domain: `webhostsunshine.com`, therefore:
in `/var/named/webhostsunshine.com.zone` put:
“` $TTL 7200 ; domain.tld @ IN SOA ns01.webhostsunshine.com. postmaster.webhostsunshine.com. ( 2007011601 ; Serial 28800 ; Refresh 1800 ; Retry 604800 ; Expire - 1 week 86400 ) ; Minimum IN NS ns01 IN NS ns02 ns01 IN A 0.0.0.0 ns02 IN A 0.0.0.0 localhost IN A 127.0.0.1 @ IN MX 10 mail imap IN CNAME mail smtp IN CNAME mail @ IN A 0.0.0.0 www IN A 0.0.0.0 mail IN A 0.0.0.0 @ IN TXT “v=spf1 mx” bkkdell IN A 192.168.1.44 aspire_one IN A 192.168.1.45 ss9 IN A 192.168.1.46 nexus4 IN A 192.168.1.47 “`
“` zone “webhostsunshine.com” IN { type master; file “webhostsunshine.com.zone”; allow-update { none; }; notify no; }; “`
$ sudo systemctl enable named.service $ sudo systemctl start named.service
https://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.2/html/Deployment_Guide/s2-bind-useful-websites.html http://www.redhat.com/mirrors/LDP/HOWTO/DNS-HOWTO.html http://tldp.org/HOWTO/DNS-HOWTO.html
This document shows how to setup a basic DNS server for your own private lab. This is very important for anyone running a lab and especially important for any one running a ‘private cloud’, as you will be creating many hosts and keeping track of them requires you use DNS.
yum -y install bind* caching-nameserver
three files: named.conf, forward and reverse zone files.
vi /var/named/chroot/etc/named.conf
“` acl good-hosts { 192.168.8.0/24; };
options { directory “/var/named”; dump-file “/var/named/data/cache_dump.db”; statistics-file “/var/named/data/named_stats.txt”; listen-on port 53 { 127.0.0.1; any; }; allow-query { good-hosts; }; allow-recursion { good-hosts; }; };
// // a caching only nameserver config // controls { inet 127.0.0.1 allow { localhost; } keys { rndckey; }; };
zone “.” IN { type hint; file “named.ca”; };
include “/etc/rndc.key”;
zone “ftravers.com” { type master; allow-query { 192.168.8.0/24; }; allow-update { none; }; file “ftravers.com.zone”; };
zone “8.168.192.in-addr.arpa” IN { type master; file “ftravers.com.rev.zone”; allow-update { none; }; allow-query { 192.168.8.0/24; }; }; logging{ channel simple_log { file “/var/log/bind.log” versions 3 size 5m; severity info; print-time yes; print-severity yes; print-category yes; }; category default{ simple_log; }; }; “` bind.log file will be found in: /var/named/chroot/var/log/bind.log
$ tail -f /var/log/messages
then
$ tail -f /var/named/chroot/var/log/bind.log
Ensure permissions are correct:
-rw-r----- 1 root named 1115 Jan 29 2010 ftravers.com.rev.zone -rw-r----- 1 root named 1109 Jan 29 2010 ftravers.com.zone
name -> ip
Zone file example: vi /var/named/chroot/var/named/ftravers.com.zone
; Zone File for ftravers.com $TTL 14400 @ IN SOA dns.ftravers.com. hostmast.ftravers.com. ( 2006102400 ; serial, todays date + todays serial # 14400 ; refresh, seconds 7200 ; retry, seconds 3600000 ; expire, seconds 86400 ; minimum, seconds ) ;
ftravers.com. 14400 IN NS dns ; xp 14400 IN A 192.168.8.119 man 14400 IN A 192.168.8.120 ucm3 14400 IN A 192.168.8.122 wls 14400 IN A 192.168.8.125 wls1032 14400 IN A 192.168.8.126 bpel 14400 IN A 192.168.8.127 proddb 14400 IN A 192.168.8.129 db112 14400 IN A 192.168.8.130 oas 14400 IN A 192.168.8.132 dns 14400 IN A 192.168.8.133 wlsdev 14400 IN A 192.168.8.136 x61 14400 IN A 192.168.8.99 hp2 14400 IN A 192.168.8.98 hp4 14400 IN A 192.168.8.104 nas 14400 IN A 192.168.8.200 ftp 14400 IN CNAME nas.ftravers.com.
ip -> name
Zone file example: /var/named/chroot/var/named/ftravers.com.rev.zone
; Reverse Zone File for ftravers.com - 8.168.192.in-addr.arpa. $TTL 14400 @ 14440 IN SOA dns.ftravers.com. hostmaster.ftravers.com. ( 2006102400 14400 7200 3600000 86400 ) ; IN NS dns.ftravers.com. 119 IN PTR xp.ftravers.com. 120 IN PTR man.ftravers.com. 122 IN PTR ucm3.ftravers.com. 129 IN PTR proddb.ftravers.com. 130 IN PTR db112.ftravers.com. 132 IN PTR oas.ftravers.com. 133 IN PTR dns.ftravers.com. 99 IN PTR x61.ftravers.com. 98 IN PTR hp2.ftravers.com. 104 IN PTR hp4.ftravers.com. 200 IN PTR nas.ftravers.com.
Since the server1 and server2 names do not end in a trailing period (.), the $ORIGIN domain is placed after them, expanding them to server1.example.com and server2.example.com.
service named restart
From ubuntu goto `/etc/resolv.conf`
The following describes how to setup a DNS server inside of Oracle. This example is the hong kong office. The first thing you need to do is understand about getting IP Addresses. In most cases you’ll need to understand that you are working in an environment where IP addresses are given out by a DHCP server. That is they are dynamic. However, you can just plug your machine in, find out what IP address it got, then take that info and use it in your DNS server. So for example, on my laptop, I’m plugged into the network, and my ipaddress is:
oracle@oracle-laptop:~$ ifconfig eth0 Link encap:Ethernet HWaddr 00:1f:16:21:93:76 inet addr:10.179.252.142 Bcast:10.179.252.255 Mask:255.255.255.0 …
So I see it is: `10.179.252.142` since this was freely handed out by DHCP, I can also take that IP and just give it to one of my servers.
Establish the following: gateway, netmask.
for gateway do: `traceroute google.com`, the firts line returned (starts with a one ) has an ipaddress…thats your gateway address.
ifconfig will return your netmask, its the ip address following `Mask:` above.
You’ll need these when you are setting up the static networking for the servers you add to your DNS setup.
Now when you 7
The second thing I need to do is make up a domain. Lets call it githklab for GIT-HK-Lab, so the full domain can be: githklab, not githklab.com or githklab.oracle.com, or githklab.hk.oracle.com…simply githklab
So our first file, `/var/named/chroot/etc/named.conf`, will look like:
acl good-hosts { any; }; options { directory “/var/named”; dump-file “/var/named/data/cache_dump.db”; statistics-file “/var/named/data/named_stats.txt”; listen-on port 53 { 127.0.0.1; any; }; allow-query { good-hosts; }; allow-recursion { good-hosts; }; }; // // a caching only nameserver config // controls { inet 127.0.0.1 allow { localhost; } keys { rndckey; }; }; zone “.” IN { type hint; file “named.ca”; }; include “/etc/rndc.key”; zone “githklab” { type master; allow-query { any; }; allow-update { none; }; file “githklab.zone”; }; zone “252.179.10.in-addr.arpa” IN { type master; file “githklab.rev.zone”; allow-update { none; }; allow-query { any; }; };
Zone file example: `/var/named/chroot/var/named/githklab.zone`
; Zone File for githklab $TTL 14400 @ IN SOA linux1.hk.oracle.com. hostmast.githklab. ( 2006102400 ; serial, todays date + todays serial # 14400 ; refresh, seconds 7200 ; retry, seconds 3600000 ; expire, seconds 86400 ; minimum, seconds ) ;
hk.oracle.com. 14400 IN NS linux1 ; ovmtbman 14400 IN A 10.179.252.142
Zone file example: `/var/named/chroot/var/named/githklab.rev.zone`
; Reverse Zone File for ftravers.com - 252.179.10.in-addr.arpa. $TTL 14400 @ 14440 IN SOA dns.ftravers.com. hostmaster.ftravers.com. ( 2006102400 14400 7200 3600000 86400 ) ; IN NS linux1.hk.oracle.com 142 IN PTR ovmtbman.githklab.
service named restart
Next you’ll want to give one of your VM’s this IP address. Then restart your laptop’s network connection, DHCP, should notice that the IP address is already used by another machine and give you a different IP address.
[root@dns ~]# cat lab ; Zone File for lab.com $TTL 14400 @ IN SOA dns.lab.com. hostmast.lab.com. ( 2006102400 ; serial, todays date + todays serial # 14400 ; refresh, seconds 7200 ; retry, seconds 3600000 ; expire, seconds 86400 ; minimum, seconds ) ;
lab.com. 14400 IN NS dns ; op5 14400 IN A 192.168.9.100 xp2 14400 IN A 192.168.9.101 ucmel 14400 IN A 192.168.9.102
dbel 14400 IN A 192.168.9.103 lab.com. 14400 IN MX 10 dbel.lab.com. opel 14400 IN A 192.168.9.104 dns 14400 IN A 192.168.9.133 ovsoracle 14400 IN A 192.168.9.56 vms 14400 IN CNAME ovsoracle.lab.com. nas 14400 IN A 192.168.9.105 kerapu.mohe.gov.my 14400 IN A 192.168.9.31 opelstg 14400 IN A 192.168.9.107 cvs 14400 IN A 192.168.9.20 dbrh64 14400 IN A 192.168.9.131 amran 14400 IN A 192.168.9.188 db10 14400 IN A 192.168.9.116 database 14400 IN A 192.168.9.113 bala 14400 IN A 192.168.9.171 anil 14400 IN A 192.168.9.172 fenton 14400 IN A 192.168.9.173 oracleucm 14400 IN A 192.168.9.176 oracleportal 14400 IN A 192.168.9.177 baizura 14400 IN A 192.168.9.179 oracledb 14400 IN A 192.168.9.187 oidrh 14400 IN A 192.168.9.134 ucmel2 14400 IN A 192.168.9.174 vms2 14400 IN A 192.168.9.57 [root@dns ~]# [root@dns ~]# cat revlab ; Reverse Zone File for lab.com – 9.168.192.in-addr.arpa. $TTL 14400 @ 14440 IN SOA dns.lab.com. hostmaster.lab.com. ( 2006102400 14400 7200 3600000 86400 ) ; IN NS dns.lab.com. 20 IN PTR cvs.lab.com. 31 IN PTR kerapu.mohe.gov.my. 101 IN PTR xp2.lab.com. 100 IN PTR op5.lab.com. 102 IN PTR ucmel.lab.com. 103 IN PTR dbel.lab.com. 104 IN PTR opel.lab.com. 105 IN PTR nas.lab.com. 133 IN PTR dns.lab.com. 107 IN PTR opelstg.lab.com. 131 IN PTR dbrh64.lab.com. 188 IN PTR amran.lab.com. 116 IN PTR db10.lab.com. 113 IN PTR database.lab.com. 171 IN PTR bala.lab.com. 172 IN PTR anil.lab.com. 173 IN PTR fenton.lab.com. 176 IN PTR oracleucm.lab.com. 177 IN PTR baizura.lab.com. 187 IN PTR oracledb.lab.com. 134 IN PTR oidrh.lab.com. 174 IN PTR ucmel2.lab.com. [root@dns ~]#