Linux 自动化部署DNS服务器

linux 自动化部署dns服务器

1.首先配置主dns服务器的ip地址，dns地址一个写主dns的ip地址，一个写从dns的地址，这里也可以不写，在测试的时候在/etc/resolv.conf中添加记录。　

2.配置从dns的ip地址

3.　运行脚本，选择1,部署主dns服务器　　　

4.运行完脚本之后，主dns就部署完成了，查看配置文件 /etc/named.conf　

5.　查看区域文件 区域文件在 /var/named/　　

6.本地测试主dns服务器是否部署成功

　

7.　在从dns服务器上运行脚本，选择2，部署从dns服务

8.查看　

9.查看 /var/named/slaves/目录下，可以看到生成两个文件，说明从dns配置成功，从主dns获得区域文件

10.在另一个客户端测试，在/etc/resolv.conf添加如下两条记录

11.　测试，下图可以看到主、从dns都正常　

 

源码如下：　　

#!/bin/bash
#该脚本用于自动化部署主dns服务器与从dns服务器
#作者:雨中落叶
#博客:https://www.cnblogs.com/yuzly/
echo "****************************
1.部署主dns服务器
2.部署从dns服务器
****************************"
read -p "请输入部署选项:" num
case $num in
1)
  #关闭防火墙,避免影响实验
  service iptables stop &>/dev/null
  setenforce 0 &>/dev/null
  named="/etc/named.conf"
  #定义函数
  alterdns(){
    #配置主文件
    rm -fr $named
    touch $named
    #获得本机ip
    eth=$(ifconfig |grep "^eth" |awk '{print $1}')
    lip=$(ifconfig $eth |grep "inet addr"|awk  '{print $2}'|awk -f: '{print $2}')
    read -p "请输入你要创建的正向区域名:" areaname
    read -p "请输入从dns服务器的ip地址:" slaveip
    fan=$(echo $lip |awk -f. '{print $3"."$2"."$1}')
    cat >>$named<<ok
options {
        listen-on port 53 { $lip; };
        listen-on-v6 port 53 { ::1; };
        directory       "/var/named";
        allow-query     { any; };
};
zone "." in {
        type hint;
        file "named.ca";
};
zone "$areaname" in {
        type master;
        file "$areaname.zone";
        allow-transfer { $slaveip; };
};
zone "$fan.in-addr.arpa" in {
        type master;
        file "$fan.in-addr.arpa.zone";
        allow-transfer { $slaveip; };
};
ok
#配置正向解析文件
  touch /var/named/$areaname.zone
cat >>/var/named/$areaname.zone<<ok
\$ttl 86400
@       in soa  $areaname. admin.$areaname. (
                                        2019032211       ; serial
                                        1d      ; refresh
                                        1h      ; retry
                                        1w      ; expire
                                        3h )    ; minimum
@    in    ns    ns1.$areaname.
    in    ns    ns2.$areaname.
    in    mx 10    mail.$areaname.
ns1    in    a    $lip
ns2    in    a    $slaveip
www    in    a    $lip
mail    in    a    $lip
news    in    cname    www.$areaname.
ok
#配置反向解析文件
touch /var/named/$fan.in-addr.arpa.zone
fourthlip=$(echo $lip |awk -f. '{print $4}')
fourthslaveip=$(echo $slaveip |awk -f. '{print $4}')
cat >>/var/named/$fan.in-addr.arpa.zone<<ok
\$ttl 86400
@       in soa  $areaname. admin.$areaname. (
                                        2019032211       ; serial
                                        1d      ; refresh
                                        1h      ; retry
                                        1w      ; expire
                                        3h )    ; minimum
@           in      ns      ns1.$areaname.
            in      ns      ns2.$areaname.
$fourthlip      in      ptr     ns1.$areaname.
$fourthslaveip   in      ptr     ns2.$areaname.
$fourthlip         in      ptr     www.$areaname. 
$fourthlip        in      ptr     mail.$areaname.
$fourthlip        in      ptr     news.$areaname.   
ok
}
if [ ! -f $named ]
 then
    echo "当前电脑没有安装dns服务,正在安装,请稍等....."
    mount /dev/sr0 /mnt &>/dev/null
    #搭建本地yum仓库
    cd /etc/yum.repos.d
    cat >>yuzly.repo<<ok
[yuzly]
name=yuzly
baseurl=file:///mnt
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/rpm-gpg-key-redhat-release
ok
    yum install bind -y &>/dev/null
    #调用函数
    alterdns
    service named start &>/dev/null
 else
    alterdns
    service named start &>/dev/null
 fi
;;
2)
    #关闭防火墙
    service iptables stop &>/dev/null
    setenforce 0 &>/dev/null
    #修改配置文件
    #获得本机ip
    eth=$(ifconfig |grep "^eth" |awk '{print $1}')
    lip=$(ifconfig $eth |grep "inet addr"|awk  '{print $2}'|awk -f: '{print $2}')
    
    named="/etc/named.conf"
    read -p "请输入主服务器创建的正向区域名:" areaname
    read -p "请输入主dns服务器的ip地址:" ip
    fan=$(echo $ip |awk -f. '{print $3"."$2"."$1}')    
    setarea(){
    cat >>$named<<ok  
options {
        listen-on port 53 { $lip; };
        directory       "/var/named";
        allow-query     { any; };
};
zone "$areaname" in {
        type slave;
        masters { $ip; };
        file "slaves/$areaname.zone";
};
zone "$fan.in-addr.arpa" in {
        type slave;
        masters { $ip; };
        file "slaves/$fan.in-addr.arpa.zone";
};
ok
    service  named start &>/dev/null
}
    if [ ! -f $named ]
    then
       echo "当前电脑没有安装dns服务,正在安装,请稍等....."
       mount /dev/sr0 /mnt &>/dev/null
       #搭建本地yum仓库
       cd /etc/yum.repos.d
       cat >>yuzly.repo<<ok
[yuzly]
name=yuzly
baseurl=file:///mnt
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/rpm-gpg-key-redhat-release
ok
       yum install bind -y &>/dev/null
       rm -fr $named
       touch $named
       #调用函数
       setarea 
   else
      rm -fr $named
      touch $named
      setarea    
  fi
;;
*)
   echo "请输入正确的数字!"
;;
esac

 

 

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