本文转载自:https://blog.youkuaiyun.com/Mr_lambor/article/details/90109982
开启防火墙:systemctl start firewalld.service
设置防火墙开机自启:systemctl enable firewalld.service
重启防火墙;systemctl restart firewalld.service
查看防火墙状态: firewall-cmd --status
查看是否成功设置为开机自启:systemctl is-enabled firewalld.service;echo $?
通过防火墙命令开放端口:firewall-cmd --zone=public --add-port=80/tcp --permanent
C语言环境安装命令:yum install gcc-c++
node安装出错:npm config set strict-ssl false