Inventory是什么
Inventory 文件主要用来填写被管理主机以及主机组信息;(逻辑上定义);默认Inventory文件为/etc/ansible/hosts;
当然也可以自定义一个文件,当执行 ansible 命令时使用-i选项指定 Inventory 文件位置;
inventory里面可以定义单个主机,一般都是去定义主机组。
列出主机中有多少台主机
[root@master ansible]# ansible webservers --list-hosts
hosts (1):
192.168.111.6
可以看到要输入yes/no
[root@master ansible]# ansible webservers -m ping
The authenticity of host '192.168.111.7 (192.168.111.7)' can't be established.
ECDSA key fingerprint is SHA256:Tixbvr6R13gu8is3+O4LSUjPJ3fO4yaWU+yENPu/l5g.
ECDSA key fingerprint is MD5:d8:b1:96:80:65:aa:bc:2e:5d:e4:60:c3:82:93:ab:a8.
Are you sure you want to continue connecting (yes/no)? The authenticity of host '192.168.111.8 (192.168.111.8)' can't be established.
ECDSA key fingerprint is SHA256:na7DOfswnmTKyNunAo8lwUDGcCFRmpiTTjDGRkT1bHU.
ECDSA key fingerprint is MD5:fd:a6:49:e7:e1:e5:db:24:25:0f:f5:08:27:2f:fb:bd.
Are you sure you want to continue connecting (yes/no)? yes
将这行注释去掉,那么就是不去验证了
[root@master ansible]# vim /etc/ansible/ansible.cfg
host_key_checking = False
Ansible连接被控端主机
因为在配置文件中谢啦远程端口为22,所以这里可以省略。
[root@master ansible]# cat hosts
[webservers]
192.168.111.6 ansible_ssh_port=22 ansible_ssh_user=root ansible_ssh_pass=123456
192.168.111.7 ansible_ssh_port=22 ansible_ssh_user=root ansible_ssh_pass=123456
[root@master ansible]# ansible webservers -m ping
192.168.111.7 | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}
192.168.111.6 | SUCCESS => {
"ansible_facts": {
"discovered_interpreter_python": "/usr/bin/python"
},
"changed": false,
"ping": "pong"
}
写用户名密码很费劲,还有一种方式就是先免密,然后直接定义逻辑组即可完成通信
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[root@master ~]# ssh-keygen
[root@master ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
[root@master ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
可以自己写个脚本免交互的配置互信。