对远程主机的Ansible ping在本地连接上有效，但在其他情况下不起作用

Question

我是一个彻头彻尾的新手，所以提前道歉！

我正在尝试运行一个Ansible剧本，它的作用是在我本地和远程机器上构建的程序之间实现文件共享/传输/同步(正如你可以猜到的，剧本不是我写的)。

我的问题是，当我不使用--connection=local时，我无法ping通远程主机。但是，我可以对远程主机执行ssh操作。当我运行playbook时，它抛出错误：

    host1 | UNREACHABLE! => {
"changed": false, 
"msg": "Failed to connect to the host via ssh.", 
"unreachable": true}

如果我这样做了

    ansible-playbook cvfms.yml --connection=local

然后我没有得到ssh错误，但是playbook不能做任何事情，因为我怀疑连接应该不是本地的，它才能运行。

有关更多信息，请参阅我的/etc/ansible/hosts文件：

    [group_name]
    host1 ansible_ssh_host=lengau.chpc.ac.za

我还有一个/etc/ansible/host_var，表示我在机器上的用户名。

在这个问题上的任何帮助都将深表感谢！

作为对这些评论的回答:当我运行ansible-playbook -vvv cvfms.yml时，我得到了输出：

PLAYBOOK: cvmfs.yml     ************************************************************
2 plays in /home/testuser/Documents/DevOps-master/Ansible/cvmfs.yml

PLAY [Enable CVMFS]  ************************************************************

TASK [setup] *******************************************************************
Using module file /usr/lib/python2.6/site-packages/ansible-2.2.0-    py2.6.egg/ansible/modules/core/system/setup.py
<lengau.chpc.ac.za> ESTABLISH SSH CONNECTION FOR USER: khenninger
<lengau.chpc.ac.za> SSH: EXEC ssh -q -C -o ControlMaster=auto -o     ControlPersist=60s -o 'IdentityFile="/home/testuser/.ssh/id_rsa"' -o     KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o   User=khenninger -o ConnectTimeout=10 -o   ControlPath=/root/.ansible/cp/ansible-ssh-%h-%p-%r lengau.chpc.ac.za  '/bin/sh -c '"'"'( umask 77 && mkdir -p "` echo  $HOME/.ansible/tmp/ansible-tmp-1468582573.96-15730857177484 `" && echo  ansible-tmp-1468582573.96-15730857177484="` echo  $HOME/.ansible/tmp/ansible-tmp-1468582573.96-15730857177484 `" ) && sleep  0'"'"''
fatal: [host1]: UNREACHABLE! => {"changed": false, "msg": "Failed to     connect to the host via ssh.", "unreachable": true}
to retry, use: --limit @/home/testuser/Documents/DevOps-  master/Ansible/cvmfs.retry

PLAY RECAP *********************************************************************
host1                      : ok=0    changed=0    unreachable=1    failed=0   

在回答另一个问题时:我像这样设置私钥：

在我的"home“机器上，我现在有一个文件/home/testuser/.ssh/id_rsa，其中包含我通过

ssh-keygen -t rsa.

此私钥也存储在远程计算机上的/home/user/.ssh/目录中。

据我所知，这是正确的做法。

当我运行ansible-playbook或ping时，我仍然会遇到与上面相同的问题。

更奇怪的是，这一切只有在我是root用户的情况下才会发生。如果我是家庭计算机上的普通用户，则ssh运行正常，playbook在本地连接上运行，并显示新的错误消息，如下所示：

ansible-playbook cvmfs.yml --connection=local

PLAY [Enable CVMFS]     ************************************************************

TASK [setup] *******************************************************************
ok: [196.24.44.83]
ok: [host1]

TASK [Inform the team] *********************************************************
fatal: [host1]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'slack_token' is undefined\n\nThe error appears to have been in '/home/testuser/Documents/DevOps-master/Ansible/cvmfs.yml': line 7, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n  pre_tasks:\n    - name: Inform the team\n      ^ here\n"}
fatal: [196.24.44.83]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'slack_token' is undefined\n\nThe error appears to have been in '/home/testuser/Documents/DevOps-master/Ansible/cvmfs.yml': line 7, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n  pre_tasks:\n    - name: Inform the team\n      ^ here\n"}

NO MORE HOSTS LEFT *************************************************************
    to retry, use: --limit @cvmfs.retry

PLAY RECAP *********************************************************************
196.24.44.83               : ok=1    changed=0    unreachable=0    failed=1   
host1                      : ok=1    changed=0    unreachable=0    failed=1 

我的本地机器上有严重的问题，我想...