telnet: connect to address xx: No route to host
可以ping通
telnet: connect to address xx: No route to host
以及
mysql 連不上,navicat報錯
是因爲被默認的防火牆攔截了
[xx@centos7 ~]
Trying 192.168.126.35…
Connected to compute1.
Escape character is ‘^]’.
SSH-2.0-OpenSSH_7.4
^C^C
Connection closed by foreign host.
2、CentOS 7 用firewall-cmd來開放端口
如:
firewall-cmd - -permanent - -add-port=3306/tcp
重新加載
firewall-cmd - -reload
確認是否開放
firewall-cmd - -list-all