Making if conditional statements by the lottery sharing program of Shell script
Master server configuration
#! / bin/bash
# production of lottery sharing program Q
# DNS master-slave synchronization-master server
Rpm-Q bind
If [$?-ne 0]; then
Yum install bind-y
Systemctl start named
Fi
# determine whether the DNS service is installed
Read-p "Please enter the primary server address:" zhu
Read-p "Please enter slave server address:" cong
Read-p "domain name (please suffix):" 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 any quanju
[!-e $quyu.bak] & & cp $quyu $quyu.bak
# backup global and regional configuration files
Grep "$yu" $quyu & > / dev/null
While [$?-ne 0]; do
Sed-I "18azone\" $yu\ "IN {\ n type master\;\ nfile\" $yu.dns\ "\;\ nallow- transfer {$cong\;}\;\ n}\;\ n" $quyu
Peizhi= "/ var/named/$yu.dns"
Cp-p / var/named/named.localhost $peizhi
Done
# determine whether the domain name exists, and add it if it does not exist
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
# modify the zone file
While [1-ge 0]; do
Read-p "Please enter a custom pointer (example: www IN A 8.8.8.8)" zhen
Echo $zhen > > / var/named/$yu.dns
Read-p "whether to continue to add (yPao)" a
If [$a! = "y"]; then
Break
Fi
Done
# Loop
Systemctl stop firewalld.service
Setenforce 0
Systemctl restart named
Jieguo= `systemctl status named | grep "active" & > / dev/ null`
If [$?-eq 0]; then
Echo "Service start"
Else
Echo "Startup failed"
Fi
# determine whether the service can be started normally
Sed-I-e '3d'-e "2anameserver $zhu" / etc/resolv.conf
# for self-test
Configure from the server
#! / bin/bash
# DNS master-slave synchronization-slave server
Rpm-Q bind
If [$?-ne 0]; then
Yum install bind-y
Fi
# determine whether the DNS service is installed
Read-p "Please enter the primary server address:" zhu
Read-p "Please enter slave server address:" cong
Read-p "domain name (please suffix):" 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 any quanju
[!-e $quyu.bak] & & cp $quyu $quyu.bak
# backup global and regional configuration files
Grep "$yu" $quyu & > / dev/null
While [$?-ne 0]; do
Sed-I "18azone\" $yu\ "IN {\ n type slave\;\ nfile\" slaves\ / $yu.dns\ "\;\ nmasters {$zhu\;}\;\ n}\;\ n" $quyu
Done
# determine whether the domain name exists, and add it if it does not exist
Systemctl restart named
Systemctl stop firewalld.service
Setenforce 0
Jieguo= `systemctl status named | grep "active" & > / dev/ null`
If [$?-eq 0]; then
Echo "Service start"
Else
Echo "Startup failed"
Fi
# determine whether the service can be started normally
