查看防火墙状态,查看socket监听,端口链路测试
systemctl status firewalld #查看防火墙状态
netstat -nltp #查看socket监听
端口链路测试 #能 ping 通但端口不通时端口可用性探测说明 https://help.aliyun.com/knowledge_detail/40572.html?spm=5176.11065259.1996646101.searchclickresult.570737b5EznKbR
能 ping 通但端口不通时端口可用性探测说明
https://help.aliyun.com/knowledge_detail/40572.html?spm=5176.11065259.1996646101.searchclickresult.2c825b9d2RlWIG