jenkins构build失败每个奇怪的构build

所以我最近遇到了一个奇怪的问题，我的jenkins没有任何理由的构build失败了每一个奇怪的构build。 构build很简单，它运行一个完整的剧本，轮stream将代码部署到远程机器，清除caching，运行维护等。

build立基本上运行这个：

ansible-playbook -i ansible/hosts ansible/backend.yml 

然后，当内部编号为奇数时，在这一步失败（用force = yes运行，所以本地修改应该没问题）：

• Jenkins auth插件 – 在哪里存储脚本以及如何传递参数？
• jenkins – 主机密钥validation失败
• 我怎样才能让jenkins/哈德森保存文件的权限？
• 未能与木偶安装jenkins
• 通过tty运行一个命令，而不用注释掉“requiretty”

 TASK [backend : Clone backend repo] ******************************************** task path: /opt/provision/ansible/roles/backend/tasks/main.yml:5 Using module file /usr/lib/python2.6/site-packages/ansible/modules/core/source_control/git.py <server_ip_address> ESTABLISH SSH CONNECTION FOR USER: username <server_ip_address> SSH: EXEC ssh -vvv -C -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/var/lib/jenkins/.ssh/jenkins"' -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=username -o ConnectTimeout=10 -o ConnectionAttempts=20 -o ControlPath=/var/lib/jenkins/.ansible/cp/ansible-ssh-%h-%p-%r server_ip_address '/bin/sh -c '"'"'( umask 77 && mkdir -p "` echo $HOME/.ansible/tmp/ansible-tmp-1485853855.83-181127458563499 `" && echo ansible-tmp-1485853855.83-181127458563499="` echo $HOME/.ansible/tmp/ansible-tmp-1485853855.83-181127458563499 `" ) && sleep 0'"'"'' <server_ip_address> PUT /tmp/tmpdgsmCK TO /home/username/.ansible/tmp/ansible-tmp-1485853855.83-181127458563499/git.py <server_ip_address> SSH: EXEC sftp -b - -vvv -C -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/var/lib/jenkins/.ssh/jenkins"' -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=username -o ConnectTimeout=10 -o ConnectionAttempts=20 -o ControlPath=/var/lib/jenkins/.ansible/cp/ansible-ssh-%h-%p-%r '[server_ip_address]' <server_ip_address> ESTABLISH SSH CONNECTION FOR USER: username <server_ip_address> SSH: EXEC ssh -vvv -C -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/var/lib/jenkins/.ssh/jenkins"' -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=username -o ConnectTimeout=10 -o ConnectionAttempts=20 -o ControlPath=/var/lib/jenkins/.ansible/cp/ansible-ssh-%h-%p-%r server_ip_address '/bin/sh -c '"'"'chmod u+x /home/username/.ansible/tmp/ansible-tmp-1485853855.83-181127458563499/ /home/username/.ansible/tmp/ansible-tmp-1485853855.83-181127458563499/git.py && sleep 0'"'"'' <server_ip_address> ESTABLISH SSH CONNECTION FOR USER: username <server_ip_address> SSH: EXEC ssh -vvv -C -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/var/lib/jenkins/.ssh/jenkins"' -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o User=username -o ConnectTimeout=10 -o ConnectionAttempts=20 -o ControlPath=/var/lib/jenkins/.ansible/cp/ansible-ssh-%h-%p-%r -tt server_ip_address '/bin/sh -c '"'"'/usr/bin/python /home/username/.ansible/tmp/ansible-tmp-1485853855.83-181127458563499/git.py; rm -rf "/home/username/.ansible/tmp/ansible-tmp-1485853855.83-181127458563499/" > /dev/null 2>&1 && sleep 0'"'"'' fatal: [backend]: FAILED! => { "changed": false, "failed": true, "invocation": { "module_name": "git" }, "module_stderr": "OpenSSH_6.6.1, OpenSSL 1.0.1k-fips 8 Jan 2015\r\ndebug1: Reading configuration data /etc/ssh/ssh_config\r\ndebug1: /etc/ssh/ssh_config line 56: Applying options for *\r\ndebug1: auto-mux: Trying existing master\r\ndebug2: fd 3 setting O_NONBLOCK\r\ndebug2: mux_client_hello_exchange: master version 4\r\ndebug3: mux_client_forwards: request forwardings: 0 local, 0 remote\r\ndebug3: mux_client_request_session: entering\r\ndebug3: mux_client_request_alive: entering\r\ndebug3: mux_client_request_alive: done pid = 23456\r\ndebug3: mux_client_request_session: session request sent\r\ndebug1: mux_client_request_session: master session id: 4\r\ndebug3: mux_client_read_packet: read header failed: Broken pipe\r\ndebug2: Received exit status from master 0\r\nShared connection to server_ip_address closed.\r\n", "module_stdout": "Traceback (most recent call last):\r\n File \"/tmp/ansible_lVW4UB/ansible_module_git.py\", line 1040, in <module>\r\n main()\r\n File \"/tmp/ansible_lVW4UB/ansible_module_git.py\", line 994, in main\r\n result.update(changed=True, after=remote_head, msg='Local modifications exist')\r\nUnboundLocalError: local variable 'remote_head' referenced before assignment\r\n", "msg": "MODULE FAILURE" } to retry, use: --limit @/opt/provision/ansible/backend.retry PLAY RECAP ********************************************************************* backend : ok=2 changed=1 unreachable=0 failed=1 

回溯形成：

 Traceback (most recent call last): File \"/tmp/ansible_lVW4UB/ansible_module_git.py\", line 1040, in <module> main() File \"/tmp/ansible_lVW4UB/ansible_module_git.py\", line 994, in main result.update(changed=True, after=remote_head, msg='Local modifications exist') UnboundLocalError: local variable 'remote_head' referenced before assignment 

失败的步骤：

 - name: Clone backend git: > repo="{{ backend_repo }}" dest="{{ backend_path }}" accept_hostkey=yes key_file="{{ backend_key }}" clone=yes force=yes update=yes version={{ backend_branch }} 

如果在失败后立即运行构build，它将很好地构build。 而且每次我从命令行运行它都会生成。