CentOS7服务器常用指令

防火墙

#查看防火墙状态
systemctl status firewalld

#启动、停止防火墙
systemctl start/stop firewalld

#重启
firewall-cmd --reload

#查看所有开放的端口
firewall-cmd --list-all

#开放端口
firewall-cmd --permanent --zone=public --add-port=3306/tcp

安装mysql8.0

https://www.cnblogs.com/yanglang/p/10782941.html

重启网卡

systemctl restart network

#网卡重启报错
systemctl stop NetworkManager
systemctl disable NetworkManager

网络工具

yum install net-tools -y

netstat -nlpt