Cent-OS——服务状态

查看MySQL状态：

systemctl start mysqld       #启用
systemctl stop mysqld       #关闭
systemctl restart mysqld    #重启MySQL服务
systemctl enable mysqld     #开机自启
systemctl daemon-reload
systemctl disable mysqld    #开机禁用

查看Zabbix状态：

systemctl restart zabbix-server zabbix-agent httpd     #重启Zabbix服务

防火墙开启，关闭，查看：

systemctl start firewalld     #启动
systemctl stop firewalld     #关闭
systemctl status firewalld    #查看状态
systemctl disable firewalld    #开机禁用
systemctl enable firewalld    #开机启用