ansible安装-本机测试

环境：centos7　　yum源：网络yum源

安装：

　　默认yum安装，也可以自己编译安装

　　yum -y install ansible

本机测试：

[root@localhost ~]# ansible 192.168.100.120 -m ping
 [WARNING]: Could not match supplied host pattern, ignoring: 192.168.100.120

 [WARNING]: provided hosts list is empty, only localhost is available

 [WARNING]: No hosts matched, nothing to do

没有这个主机，我们首先要编辑ansible的host文件

[root@localhost .ssh]# vim /etc/ansible/hosts

[test]　　#组名字
192.168.100.120　　#组成员

我们接着测试：

[root@localhost ansible]# ansible 192.168.100.120 -m ping
The authenticity of host '192.168.100.120 (192.168.100.120)' can't be established.
ECDSA key fingerprint is SHA256:EMibfCrcMWOocTvKl/6bBPFMBpXv4SictIciUjv3Qmc.
ECDSA key fingerprint is MD5:2a:cb:5e:3e:85:1c:51:81:d1:ac:bb:2b:b4:e3:c9:27.
Are you sure you want to continue connecting (yes/no)? no
192.168.100.120 | UNREACHABLE! => {
    "changed": false, 
    "msg": "Failed to connect to the host via ssh: Host key verification failed.
", 
    "unreachable": true
}

遇到这个问题就是我们拒绝保存连接生成的key文件，下次我们连接这台主机直接提示拒绝保存。

[root@localhost ansible]# ansible 192.168.100.120 -m ping
192.168.100.120 | UNREACHABLE! => {
    "changed": false, 
    "msg": "Failed to connect to the host via ssh: Warning: Permanently added '192.168.100.120' (ECDSA) to the list of known hosts.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
", 
    "unreachable": true
}

解决办法：

　　生成ssh-keygen

[root@localhost ~]# ssh-keygen 
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:hgZwYVVjPqcgaIvHeNORH9QEGDXM6+6c+rXXw8cW1Xk root@localhost.localdomain
The key's randomart image is:
+---[RSA 2048]----+
|  . =O*==        |
|   =.oo+..       |
|  o = o.o .     o|
| = o =.+ +     .E|
|o * ..+ S      ..|
| o . ...      .  |
|     .  .  o . . |
|     ..o .. + +  |
|    .+= ..   +   |
+----[SHA256]-----+

把生成的ssh-key再发送给本机

[root@localhost .ssh]# ssh-copy-id root@127.0.0.1
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host '127.0.0.1 (127.0.0.1)' can't be established.
ECDSA key fingerprint is SHA256:EMibfCrcMWOocTvKl/6bBPFMBpXv4SictIciUjv3Qmc.
ECDSA key fingerprint is MD5:2a:cb:5e:3e:85:1c:51:81:d1:ac:bb:2b:b4:e3:c9:27.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@127.0.0.1's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'root@127.0.0.1'"
and check to make sure that only the key(s) you wanted were added.

再次测试连接：

[root@localhost ~]# ansible 192.168.100.120 -m ping
192.168.100.120 | SUCCESS => {
    "changed": false, 
    "ping": "pong"
}

测试成功