CentOS安裝dns (forward-only)

1.bind的必需套件

• bind
• caching-nameserver (只負責forwarding的dns套件)
• bind-chroot (change root directory)
• bind-utils (dig..等工具)
• system-config-bind(圖形介面設定工作)

2.檢查並安裝

• #rpm -qa bind*
• #rpm -qa system-config-bind
  
• #yum -y install bind system-config-bind --->安裝缺少的套件

3.bind的設定檔/etc/named.conf

• #ls -al /etc/named.caching-nameserver.conf
  
• lrwxrwxrwx 1 root named 52 10月 15 14:41 /etc/named.caching-nameserver.conf -> /var/named/chroot//etc/named.caching-nameserver.conf
  
• 真實的設定檔己經被chroot到粗體字的目錄下
• #cd /var/named/chroot/etc/
• #cp named.caching-nameserver.conf  named.conf
• #ls -l --->發現named.conf權限不正確
• -rw-r----- 1 root named 1195  7月 30 08:56 named.caching-nameserver.conf
  -rw-r----- 1 root root  1195 10月 15 14:57 named.conf
  
• #chown root.named named.conf
• #service named restart

4.測試

• #dig www.ibm.com @127.0.0.1 --->測試本機的dns是否有回應
•  ;; Query time: 1994 msec
  ;; SERVER: 127.0.0.1#53(127.0.0.1)
  ;; WHEN: Thu Oct 15 15:09:00 2009
  ;; MSG SIZE  rcvd: 178
  
• #vi named.conf --->提供dns服務給anyone
• options {
•         listen-on port 53 { any; };
•         listen-on-v6 port 53 { ::1; };
•  allow-query     { any; };
• view localhost_resolver {
          match-clients      { any; };
          match-destinations { any; };
          recursion yes;
          include "/etc/named.rfc1912.zones";
  };