当代理禁止关键字ftp时，如何更改Jenkins镜像

Question

当我安装像“git-plugin”这样的jenkins插件时，jenkins会将我的请求重定向到镜像ftp.halifax.rwth-aachen.de。但我在一个公司代理后面工作，该代理禁止对包含“ftp”一词的 URL 发出请求。

为jenkins下载插件时有没有办法选择或禁用镜像？ Jenkins 从不包含“ftp”的站点安装插件没有问题。

这是来自 jenkins log-view 的错误：

Dez 22, 2016 3:46:54 PM INFORMATION hudson.model.UpdateCenter$DownloadJob run
Starting the installation of Git client plugin on behalf of admin-ci
Dez 22, 2016 3:46:54 PM SCHWERWIEGEND hudson.model.UpdateCenter$DownloadJob run
Failed to install Git client plugin
hudson.util.IOException2: Failed to download from http://updates.jenkins-ci.org/download/plugins/git-client/2.1.0/git-client.hpi (redirected to: http://ftp.halifax.rwth-aachen.de/jenkins/plugins/git-client/2.1.0/git-client.hpi)
    at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1169)
    at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:1666)
    at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1864)
    at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1640)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:110)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: Server returned HTTP response code: 403 for URL: http://ftp.halifax.rwth-aachen.de/jenkins/plugins/git-client/2.1.0/git-client.hpi
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1926)
    at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1921)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1920)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1490)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474)
    at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1121)
    ... 7 more
Caused by: java.io.IOException: Server returned HTTP response code: 403 for URL: http://ftp.halifax.rwth-aachen.de/jenkins/plugins/git-client/2.1.0/git-client.hpi
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1876)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474)
    at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2982)
    at java.net.URLConnection.getHeaderFieldLong(URLConnection.java:629)
    at java.net.URLConnection.getContentLengthLong(URLConnection.java:501)
    at java.net.URLConnection.getContentLength(URLConnection.java:485)
    at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1120)
    ... 7 more

    enter code here

Answer 1

默认情况下，Jenkins 使用 http://updates.jenkins-ci.org/update-center.json 作为“负载均衡器”url，它将您转发到最近的地理镜像 json（即 http://ftp- nyc.osuosl.org/pub/jenkins/updates/current/update-center.json 对我来说）。您可以做的是通过安装此插件并在您想要的任何地方（即内部）托管 json 文件来使用您自己的 json 文件：

https://wiki.jenkins.io/display/JENKINS/UpdateSites+Manager+plugin

Answer 2

我找到了解决方法：

1. 直接从 http://mirrors.jenkins-ci.org/plugins/gitlab-plugin/latest/

下载插件

2. 将 hpi 文件上传到 jenkins 中。有一个 http://host:8080/pluginManager/advanced中的上传字段。

但这只是一个解决方法。我想得到我的问题的答案：“在下载jenkins插件时有没有办法选择或禁用镜像？”

Answer 3

老实说，真正的解决方案是告诉您的防火墙管理器阻止 ftp，而不是阻止其中包含 ftp 的 url - 这是一个糟糕的规则。