Ansible执行时告警[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to see details

 [root@centos7-79 ansible]# ansible web-servers -m ping

[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to see details
192.168.10.51 | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}
192.168.10.52 | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}

解决方法：检查组名是否只包含了字母，数字，下划线"_"，且组名不能数字开头，然后修改符合要求即可。

原因是组名用了中划线，应该改为下划线