linux - 无法通过 Ansible ping 我的远程计算机

Question

我正在尝试使用以下命令ping我的远程Linux计算机:

ansible remote -m ping -vvvv

我收到以下回复:

[root@ansible ansible]# ansible remote -m ping -vvvv
Using /etc/ansible/ansible.cfg as config file
Loaded callback minimal of type stdout, v2.0
<192.41.50.9> ESTABLISH SSH CONNECTION FOR USER: root
<192.41.50.9> SSH: EXEC sshpass -d12 ssh -C -vvv -o ControlMaster=auto -o ControlPersist=60s -o Port=22 -o User=root -o ConnectTimeout=10 -o ControlPath=/root/.ansible/cp/ansible-ssh-%h-%p-%r 192.41.50.9 '/bin/sh -c '"'"'( umask 77 && mkdir -p "` echo $HOME/.ansible/tmp/ansible-tmp-1480431200.39-212981181831507 `" && echo ansible-tmp-1480431200.39-212981181831507="` echo $HOME/.ansible/tmp/ansible-tmp-1480431200.39-212981181831507 `" ) && sleep 0'"'"''
192.41.50.9 | UNREACHABLE! => {
"changed": false,
"msg": "Failed to connect to the host via ssh.",
"unreachable": true
}

我的主机文件如下所示:

[remote]
192.41.50.9

[remote:vars]
ansible_ssh_user=root
ansible_ssh_pass=p@ssw0rd
ansible_ssh_port=22

当我尝试 ssh 进入我的远程计算机时，这就是我得到的:

[root@ansible ansible]# ssh root@192.41.50.9
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
86:d2:ca:8e:aa:8a:ce:25:c7:e5:31:7e:2a:c0:11:7f.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending RSA key in /root/.ssh/known_hosts:3
RSA host key for 192.41.50.9 has changed and you have requested strict checking.
Host key verification failed.

导致连接失败的原因可能是什么？

Answer 1

如果你阅读 shell ssh 的输出，你会发现

1. 您正在遭受中间人攻击(可能性很小)
2. 服务器上的 ssh key 已更改(因为您重新创建了它并保留了相同的 IP)。

如果您的情况是后一种情况，您可以在 ansible 配置文件中添加以下部分 ansible.cfg

[defaults]
host_key_checking=False