Failed connect to x.x.x.x No route to host
情况:
1、IP1 ping IP2 正常
2、IP2 ping IP1 正常
3、IP1 telnet IP2:80 正常
4、IP1 curl IP2 正常
异常情况
5、IP2 telnet IP1 提示: telnet: connect to address 10.10.10.21: No route to host
6、IP2 curl IP1 提示: curl: (7) Failed connect to 10.10.10.21:80; No route to host

解决办法:
关闭IP2防火墙
systemctl disable firewalld
systemct stop firewalld
确认是否关闭:
systemctl status firewalld

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