1、编写一个连接其它主机脚本，在网络畅通的情况下，只要有IP，用户和密码，就能连接。
2、编写一个创建用户的脚本，分别有存放用户名和密码的两个文件，文件中一行对应一个密码或用户，该脚本能够创建用户文件中的用户，并给用户密码文件中对应的密码，同时要考虑，文件不存在、文件行数不一致以及用户已经存在的情况。
3、数据库的备份脚本，第一个输入为密码，第二个输入为数据库名字，如果数据库名字为 --all-databases 就备份所有数据库
4、配置DDNS主服务器的脚本
#!/bin/bash yum install bind -y yum install dhcp -y systemctl start named systemctl enable named firewall-cmd --permanent --add-service=dns firewall-cmd --permanent --add-service=dhcp firewall-cmd --reload ##生成密钥 cd /mnt dnssec-keygen -a HMAC-MD5 -b 128 -n HOST hello KEY=`cat K*.key | cut -d " " -f 7` cp -p /etc/rndc.key /etc/hello.key cat > /etc/hello.key <<END key "hello" { algorithm hmac-md5; secret "$KEY"; }; END ##配置/etc/named.conf文件 chmod 770 /var/named sed -i 's/127\.0\.0\.1/any/g' /etc/named.conf sed -i 's/localhost/any/g' /etc/named.conf sed -i 's/dnssec-validation\ yes/dnssec-validation\ no/g' /etc/named.conf cat >> /etc/named.conf << END include "/etc/hello.key"; END ##正向解析 cat >> /etc/named.rfc1912.zones <<END zone "hello.com" IN { type master; file "hello.com.zone"; allow-update { key hello; }; allow-transfer{ 172.25.254.105;}; also-notify {172.25.254.105;}; }; END cp -p /var/named/named.localhost /var/named/hello.com.zone cat > /var/named/hello.com.zone << END \$TTL 1D @ IN SOA dns.hello.com. root.redhat.com. ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum NS dns.hello.com. dns A 172.25.254.67 www A 172.25.254.100 END ##配置/etc/dhcp/dhcpd.conf文件 cat > /etc/dhcp/dhcpd.conf << END option domain-name "hello.com"; option domain-name-servers 172.25.254.67; ddns-update-style interim; default-lease-time 600; max-lease-time 7200; log-facility local7; subnet 172.25.254.0 netmask 255.255.255.0 { range 172.25.254.100 172.25.254.200; option routers 172.25.254.67; } key hello { algorithm hmac-md5; secret "$KEY"; }; zone hello.com { primary 127.0.0.1; key hello; } END systemctl start dhcpd systemctl restart named systemctl enable dhcpd
