1 jenkins连接git
报错内容：
Failed to connect to repository : Error performing command: git ls-remote -h http://10.10.8.116/ucbms/ucbms.git HEAD
解决办法：
在jenkins机器上安装git。说明无git命令。或者git版本比较低。一般情况下使用yum安装一个git就可以解决问题。
2 webhook本地网络限制
报错内容：
Urlis blocked:Requests to the local network are not allowed
解决办法：
gitlab 10.6 版本以后为了安全，不允许向本地网络发送webhook请求，如果想向本地网络发送webhook请求，则需要使用管理员帐号登录，默认管理员帐号是admin@example.com，密码就是你gitlab搭建好之后第一次输入的密码。
3 HTTP 403
报错内容：
Hook executed successfully but returned HTTP 403<html> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> <title>Error 403 No valid crumb was included in the request</title> </head> <body><h2>HTTP ERROR 403</h2> <p>Problem accessing /job/eureka-service/build. Reason: <pre> No valid crumb was included in the request</pre></p> <a href="http://eclipse.org/jetty">Powered by Jetty:// 9.4.z-SNAPSHOT</a> ></body> </html>
解决办法：
由于Jenkins的安全策略配置了CSRF跨站点保护。进入Jenkins，系统管理-->全局安全配置，勾选匿名用户具有可读权限和去掉CSRF防止跨站点请求伪造：
4 HTTP 401
报错内容：
Hook executed successfully but returned HTTP 401 <!doctype html><html lang="en"><head><title>HTTP Status 401 – Unauthorized</title><style type="text/css">h1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} h2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} h3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} body {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} b {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} p {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;} a {color:black;} a.name {color:black;} .line {height:1px;background-color:#525D76;border:none;}</style></head><body><h1>HTTP Status 401 – Unauthorized</h1><hr class="line" /><p><b>Type</b> Status Report</p><p><b>Message</b> Invalid token</p><p><b>Description</b> The request has not been applied because it lacks valid authentication credentials for the target resource.</p><hr class="line" /><h3>Apache Tomcat/8.5.34</h3></body></html>
解决办法：
在jenkins上生成密钥，填写在gitlab
4 HTTP 422
Hook executed successfully but returned HTTP 422 <!DOCTYPE html> <html> <head> <meta content="width=device-width, initial-scale=1, maximum-scale=1" name="viewport"> <title>The change you requested was rejected (422)</title> <style> body { color: #666; text-align: center; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; margin: auto; font-size: 14px; } h1 { font-size: 56px; line-height: 100px; font-weight: 400; color: #456; } h2 { font-size: 24px; color: #666; line-height: 1.5em; } h3 { color: #456; font-size: 20px; font-weight: 400; line-height: 28px; } hr { max-width: 800px; margin: 18px auto; border: 0; border-top: 1px solid #EEE; border-bottom: 1px solid white; } img { max-width: 40vw; display: block; margin: 40px auto; } a { line-height: 100px; font-weight: 400; color: #4A8BEE; font-size: 18px; text-decoration: none; } .container { margin: auto 20px; } .go-back { display: none; } </style> </head> <body> <a href="/"> <img src="data:image/svg+xml;base64,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" alt="GitLab Logo" /> </a> <h1> 422 </h1> <div class="container"> <h3>The change you requested was rejected.</h3> <hr /> <p>Make sure you have access to the thing you tried to change.</p> <p>Please contact your GitLab administrator if you think this is a mistake.</p> <a href="javascript:history.back()" class="js-go-back go-back">Go back</a> </div> <script> (function () { var goBack = document.querySelector('.js-go-back'); if (history.length > 1) { goBack.style.display = 'inline'; } })(); </script> </body> </html>
解决办法：
这个是配置问题
在Gitlab的webhook 的URL中错误写成了git仓库的地址
