1、iptables的配置文件位置：/etc/sysconfig/iptables 主控机：即业务运行中的机子；备份机：即主控机故障时，切换到备份的机子
–在主控机上的操作——————-2、建立目录：mkdir -p /bak/iptables/mkdir /root/script/
3、在/root/script/目录下建立脚本：vi backup.sh
\cp /etc/sysconfig/iptables /bak/iptables/iptables_$(date +%Y%m%d%H)
4、定制自动任务：crontab -e*/10 * * * * /usr/sbin/ntpdate 210.72.145.4410 * * * * sh /root/script/backup.sh
–在备份机上操作———————5、建立目录：mkdir -p /bak/iptables/{lt,yd} #lt目录放联通跳转的备份，yd目录放移动跳转的备份mkdir /root/script/
6、在/root/script/目录下建立脚本：vi scp_lt.sh
#!/usr/bin/expect -fset password gstspawn scp -P 22 root@202.105.135.52:/etc/sysconfig/iptables /bak/iptables/lt/iptablesset timeout 300 expect “root@202.105.135.52’s password:”set timeout 300 send “$password\r”set timeout 300 send “exit\r”expect eof
7、在/root/script/目录下建立脚本：vi scp_yd.sh
#!/usr/bin/expect -fset password gstspawn scp -P 22 root@183.62.178.91:/etc/sysconfig/iptables /bak/iptables/yd/iptablesset timeout 300 expect “root@183.62.178.91’s password:”set timeout 300 send “$password\r”set timeout 300 send “exit\r”expect eof
8、在/root/script/目录下建立脚本：vi backup.sh
expect /root/script/scp_lt.shexpect /root/script/scp_yd.shsed -i ‘s/202.105.135.52/183.62.178.85/g’ /bak/iptables/lt/iptablessed -i ‘s/58.251.49.18/58.250.56.154/g’ /bak/iptables/lt/iptables\cp /bak/iptables/lt/iptables /etc/sysconfig/iptables/etc/init.d/iptables restart/etc/init.d/iptables savemv /bak/iptables/lt/iptables /bak/iptables/lt/iptables_$(date +%Y%m%d%H)mv /bak/iptables/yd/iptables /bak/iptables/yd/iptables_$(date +%Y%m%d%H)
9、注意，要在备份机上手动远程登陆一次，以获得RSA的公钥，之后就不用这样登陆了，否则脚本会执行错误
10、定制自动任务：crontab -e*/10 * * * * /usr/sbin/ntpdate 210.72.145.4420 * * * * sh /root/script/backup.sh
，要纠正别人之前，先反省自己有没有犯错
