Jenkins插件（国内镜像）

一、为了防止插件上传失败，先按步骤更改下载源。

①Manage Jenkins

②Manage Plugins

③Advanced

④Update Site换成http://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/update-center.json（注意：是http，不是https，否则会报错There were errors checking the update sites: SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target）

⑤submit

⑥Check now

⑧用everything软件找到hudson.model.UpdateCenter.xml，以记事本方式打开，把旧镜像换成新镜像，ctrl+s保存。