Shell指令碼實戰之DNS主從同步指令碼例項
阿新 • • 發佈:2020-11-19
DNS主從同步指令碼例項
PS:兩個伺服器起好後最好兩個服務都重啟一下
主伺服器配置
#!/bin/bash #DNS主從同步——主伺服器 rpm -q bind if [ $? -ne 0 ];then yum install bind -y systemctl start named fi #判斷DNS服務是否安裝 read -p "請輸入主伺服器地址:" zhu read -p "請輸入從伺服器地址:" cong read -p "域名(請帶字尾):" yu quanju="/etc/named.conf" quyu="/etc/named.rfc1912.zones" [ ! -e $quanju.bak ] && cp $quanju $quanju.bak sed -i -e "13s/127.0.0.1/$zhu/" -e '21s/localhost/any/' $quanju [ ! -e $quyu.bak ] && cp $quyu $quyu.bak #備份全域性、區域配置檔案 grep "$yu" $quyu &> /dev/null while [ $? -ne 0 ];do sed -i "18azone \"$yu\" IN {\n type master\;\n file \"$yu.dns\"\;\n allow- transfer { $cong\; }\;\n}\;\n" $quyu peizhi="/var/named/$yu.dns" cp -p /var/named/named.localhost $peizhi done #判斷域名是否存在,如果不存在進行新增 sed -i -e '2d' -e "1a@ IN SOA "$yu"\. admin\."$yu"\. (" /var/named/$yu.dns sed -i '8d' /var/named/$yu.dns sed -i '$d' /var/named/$yu.dns sed -i -e "7a\ NS $yu." -e "/A/s/127.0.0.1/$zhu/" /var/named/$yu.dns #修改區域檔案 while [ 1 -ge 0 ];do read -p "請輸入自定義指標(例:www IN A 8.8.8.8)" zhen echo $zhen >> /var/named/$yu.dns read -p "是否繼續新增(y/n)" a if [ $a != "y" ];then break fi done #迴圈 systemctl stop firewalld.service setenforce 0 systemctl restart named jieguo=`systemctl status named | grep "active" &>/dev/null` if [ $? -eq 0 ];then echo "服務啟動" else echo "啟動失敗" fi #判斷服務是否能正常啟動 sed -i -e '3d' -e "2anameserver $zhu" /etc/resolv.conf #用於自檢
從伺服器配置
#!/bin/bash #DNS主從同步——從伺服器 rpm -q bind if [ $? -ne 0 ];then yum install bind -y fi #判斷DNS服務是否安裝 read -p "請輸入主伺服器地址:" zhu read -p "請輸入從伺服器地址:" cong read -p "域名(請帶字尾):" yu quanju="/etc/named.conf" quyu="/etc/named.rfc1912.zones" [ ! -e $quanju.bak ] && cp $quanju $quanju.bak sed -i -e "13s/127.0.0.1/$cong/" -e '21s/localhost/any/' $quanju [ ! -e $quyu.bak ] && cp $quyu $quyu.bak #備份全域性、區域配置檔案 grep "$yu" $quyu &> /dev/null while [ $? -ne 0 ];do sed -i "18azone \"$yu\" IN {\n type slave\;\n file \"slaves\/$yu.dns\"\;\n masters { $zhu\; }\;\n}\;\n" $quyu done #判斷域名是否存在,如果不存在進行新增 systemctl restart named systemctl stop firewalld.service setenforce 0 jieguo=`systemctl status named | grep "active" &>/dev/null` if [ $? -eq 0 ];then echo "服務啟動" else echo "啟動失敗" fi #判斷服務是否能正常啟動
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