command模块配置

command模块只能执行普通的命令，高级shell命令需要使用shell模块来执行

1.command命令模块

实例1：查看主机名

[root@ansible ~]# ansible web_clust -m command -a "hostname" -f 3
192.168.81.240 | CHANGED | rc=0 >>
backup
192.168.81.230 | CHANGED | rc=0 >>
nfs
192.168.81.220 | CHANGED | rc=0 >>
web

-f =forks 结果返回的数量，比如一次对2台机器进行操作

实例2：创建用户

[root@ansible ~]# ansible web_clust -m command -a "useradd jiangxiaol"
192.168.81.230 | CHANGED | rc=0 >>

192.168.81.220 | CHANGED | rc=0 >>

192.168.81.180 | CHANGED | rc=0 >>