Centos7.5 ansible执行命令报错

问题:

[root@m01 ~]# ansible servers -a "hostname"  [WARNING]: provided hosts list is empty, only localhost is available. Note that the implicitlocalhost does not match 'all' [WARNING]: Could not match supplied host pattern, ignoring: servers

原因:

没有添加主机清单

解决方法:

方式一:[root@m01 ~]# vim /etc/ansible/hosts[webservers]172.16.1.7[mysqlservers]172.16.1.8[servers:children]webserversmysqlservers[root@m01 ~]# ansible servers -a "hostname" 172.16.1.8 | CHANGED | rc=0 >>web02172.16.1.7 | CHANGED | rc=0 >>web01方式二:[root@m01 ~]# vim hosts[webservers]172.16.1.7[mysqlservers]172.16.1.8[servers:children]webserversmysqlservers[root@m01 ~]# ansible servers -a "hostname" -i ./hosts172.16.1.8 | CHANGED | rc=0 >>web02172.16.1.7 | CHANGED | rc=0 >>web01