無法通過 ssh 連接到主機: 主機密鑰驗證失敗。\\r\\n

Question

當我嘗試以 ansible 連接到主機時出錯

我能夠在本地主機（ansible）中 ping ssh_connection，但不能在 jenkins 管道構建中。

我幾乎嘗試了所有方法。

----------
[FPipeline] Running shell script
+ ansible all -m ping -vvv
ansible 2.4.0.0
config file = /var/lib/jenkins/workspace/FPipeline/ansible.cfg
configured module search path = 
[u'/var/lib/jenkins/.ansible/plugins/modules', 
u'/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python2.7/site-packages/ansible
executable location = /bin/ansible
python version = 2.7.5 (default, Aug  4 2017, 00:39:18) [GCC 4.8.5 20150623 
(Red Hat 4.8.5-16)]
Using /var/lib/jenkins/workspace/FPipeline/ansible.cfg as config file
Parsed /etc/ansible/hosts inventory source with ini plugin
META: ran handlers
Using module file /usr/lib/python2.7/site-
packages/ansible/modules/system/ping.py
<localhost> ESTABLISH SSH CONNECTION FOR USER: None
<localhost> 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 
ConnectTimeout=10 -o ControlPath=/var/lib/jenkins/.ansible/cp/8a5a4c6a60 
localhost '/bin/sh -c '"'"'echo ~ && sleep 0'"'"''
Using module file /usr/lib/python2.7/site-
packages/ansible/modules/system/ping.py
<192.168.219.131> ESTABLISH SSH CONNECTION FOR USER: None
<192.168.219.131> 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 ConnectTimeout=10 -o 
ControlPath=/var/lib/jenkins/.ansible/cp/81147ff3f7 192.168.219.131 '/bin/sh 
-c '"'"'echo ~ && sleep 0'"'"''
<192.168.219.131> (255, '', 'Host key verification failed.\r\n')
server1 | UNREACHABLE! => {
"changed": false, 
"msg": "Failed to connect to the host via ssh: Host key verification  
failed.\r\n", 
"unreachable": true
}
<localhost> (255, '', 'Host key verification failed.\r\n')
localhost | UNREACHABLE! => {
"changed": false, 
"msg": "Failed to connect to the host via ssh: Host key verification 
failed.\r\n", 
"unreachable": true
}

----------

你能幫我解決這個問題嗎...

Answer 1

在你的ansible配置文件/var/lib/jenkins/workspace/FPipeline/ansible.cfg添加以下行並再次測試它。

[defaults]
host_key_checking = False

Answer 2

在禁用主機密鑰檢查的另一種方式ansible是設定ANSIBLE_HOST_KEY_CHECKING環境變量False

export ANSIBLE_HOST_KEY_CHECKING=False

Ansible Docs

Answer 3

我建議不要完全禁用主機密鑰檢查，而是建議將所有主機添加一次（您應該驗證 SSH 指紋）。 您需要與發起 SSH 連接的用戶（在您的情況下可能是 Jenkins 用戶）一起運行這些命令：

# remove any old fingerprints for the host
ssh-keygen -R server.example.com
# add SSH fingerprints for the host
ssh-keyscan -t ecdsa,ed25519 -H server.example.com >> ~/.ssh/known_hosts 2>&1

Answer 4

機器首次連接后是否重建了？

如果需要，您需要從~/.ssh/known_hosts刪除主機，或者將以下選項添加到SSH： StrictHostKeyChecking=no 。

Answer 5

您可以使用Jenkins ansible插件執行此操作。 他們的文檔有一個主機密鑰檢查錯誤，但這是一個完整的工作示例 ：

以下是解決方案的重要摘要：

ansiColor('xterm') {
    ansiblePlaybook(
        playbook: './ansible/playbook.yml',
        inventory: '/tmp/inventory.ini',
        credentialsId: 'your-jenkins-pk-credential',
        disableHostKeyChecking: true,
        colorized: true)
    }
}

Answer 6

Jenkins 提供了禁用 SSH 主機密鑰檢查的選項。

1. 在構建步驟的底部，點擊【高級】
2. 選中“禁用 SSH 主機密鑰檢查”前面的框。