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Ansible - SSH 错误：无法将数据发送到远程主机

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Ansible - SSH 错误：无法将数据发送到远程主机

我正在尝试使用Ansible 2.7.7来管理Ubuntu 16.04 cloud image，但是当我尝试建立连接时出现错误：

SSH Error: data could not be sent to remote host "192.168.111.11". Make sure this host can be reached over ssh

如果我在 Ansible 主机上发出命令，我可以毫无问题地连接到目标服务器。我也可以在那里不输入密码。ssh [email protected]sudo

如果查看目标机器的日志，我会看到 Ansible 已成功登录到该机器：

Feb 20 11:44:51 ubuntu sshd[2870]: Accepted publickey for ubuntu from 192.168.111.111 port 56236 ssh2: RSA SHA256:yI...
Feb 20 11:44:51 ubuntu sshd[2870]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Feb 20 11:44:51 ubuntu systemd-logind[1090]: New session 13 of user ubuntu.
Feb 20 11:44:51 ubuntu sudo:   ubuntu : TTY=unknown ; PWD=/home/ubuntu ; USER=root ; COMMAND=/bin/sh -c echo BECOME-SUCCESS-kldfjkldjhjljkl; /usr/bin/python
Feb 20 11:44:51 ubuntu sudo: pam_unix(sudo:session): session opened for user root by (uid=0)
Feb 20 11:44:51 ubuntu sudo: pam_unix(sudo:session): session closed for user root

详细输出：

ansible-playbook -i inventory default.yaml -vvv
ansible-playbook 2.7.7
  config file = /home/admin/ansible/ansible.cfg
  configured module search path = [u'/home/admin/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /home/admin/ansible/ansible-env/local/lib/python2.7/site-packages/ansible
  executable location = /home/admin/ansible/ansible-env/bin/ansible-playbook
  python version = 2.7.12 (default, Nov 12 2018, 14:36:49) [GCC 5.4.0 20160609]
Using /home/admin/ansible/ansible.cfg as config file
/home/admin/ansible/inventory did not meet host_list requirements, check plugin documentation if this is unexpected
/home/admin/ansible/inventory did not meet script requirements, check plugin documentation if this is unexpected
Parsed /home/admin/ansible/inventory inventory source with ini plugin

PLAYBOOK: default.yaml *******************************************************************************************************************************************************************************************************************
1 plays in default.yaml

PLAY [default] ***************************************************************************************************************************************************************************************************************************

TASK [Gathering Facts] *******************************************************************************************************************************************************************************************************************
task path: /home/admin/ansible/default.yaml:3
Using module file /home/admin/ansible/ansible-env/local/lib/python2.7/site-packages/ansible/modules/system/setup.py
<192.168.111.11> ESTABLISH SSH CONNECTION FOR USER: ubuntu
<192.168.111.11> SSH: EXEC ssh -C -o ControlMaster=auto -o ControlPersist=60s -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=ubuntu -o ConnectTimeout=10 -o ControlPath=/home/admin/.ansible/cp/a9e60c69b0 192.168.111.11 '/bin/sh -c '"'"'sudo -H -S -n -u root /bin/sh -c '"'"'"'"'"'"'"'"'echo BECOME-SUCCESS-tenlfcstwmojszikegdyatixrzpwqwah; /usr/bin/python'"'"'"'"'"'"'"'"' && sleep 0'"'"''
Escalation succeeded
fatal: [192.168.111.11]: UNREACHABLE! => {
    "changed": false,
    "unreachable": true
}

MSG:

SSH Error: data could not be sent to remote host "192.168.111.11". Make sure this host can be reached over ssh

什么原因导致了这个问题？

答案1

事实证明，tty使用时我的目标系统是必需的sudo。

我能够通过注释掉以下行来建立联系ansible.cfg：

pipelining = True

其他选项是禁用requirettysudoer 文件中的设置。

答案2

更详细地阐述@Michael Hampton 的评论。Ansible 正在屏蔽 ssh 错误。

在我的例子中，真正的错误以详细级别显示-vvvv是：Host key verification failed.我在这里找到了解决方案：

https://unix.stackexchange.com/questions/416166/cant-establish-ssh-connection-debug1-read-passphrase-cant-open-dev-tty-n#answer-416186

基本上，提供 ssh 选项：-o StrictHostKeyChecking=no

答案3

在 ansible.cfg 中添加这几行对我来说解决了这个问题。[source_link][1]

[ssh_connection]
scp_if_ssh = smart
transfer_method = smart

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