nslookup解析scanip

两节点都要执行 root用户

将scanip地址添加到可通信文件中

自行配置如下

1、备份原有nslookup

cd /usr/bin/nslookup
mv /usr/bin/nslookup /usr/bin/nslookup.original

2、新建脚本

注意替换为真实域名和地址

tee > nslookup <<EOF
#!/bin/bash

HOSTNAME=$1

if [[ $HOSTNAME = "rac-scanip" ]]; then
    echo "Server:         223.5.5.5"
    echo "Address:        223.5.5.5#53"
    echo
    echo "Non-authoritative answer:"
    echo "Name:           rac-scanip"
    echo "Address:        rac-scanip(ip 地址)"
else
    /usr/bin/nslookup.original $HOSTNAME
fi
EOF

3、授权

chmod 755 nslookup

4、测试

nslookup 域名