Jenkins plugin update is failing from https://mirrors.tuna.tsinghua.edu.cn

Using Jenkins
1

Jenkins setup:java.net.SocketTimeoutException: Connect timed out
at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:546)
at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:592)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
at java.base/java.net.Socket.connect(Socket.java:751)
at java.base/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:304)
at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:178)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:531)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:636)
at java.base/sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:264)
at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:377)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:193)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1252)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1138)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:179)
at java.base/sun.net.www.protocol.http.HttpURLConnection.followRedirect0(HttpURLConnection.java:2924)
at java.base/sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2833)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1944)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1614)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:223)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1362)
Caused: java.io.IOException: Failed to load https://updates.jenkins.io/download/plugins/command-launcher/134.v025a_5fcf9dea_/command-launcher.hpi to /var/lib/jenkins/plugins/command-launcher.jpi.tmp
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1377)
Caused: java.io.IOException: Failed to download from https://updates.jenkins.io/download/plugins/command-launcher/134.v025a_5fcf9dea_/command-launcher.hpi → https://mirrors.tuna.tsinghua.edu.cn/jenkins/plugins/command-launcher/134.v025a_5fcf9dea_/command-launcher.hpi
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1404)
at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:2053)
at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:2381)
at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:2027)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:121)
at java.base/java.lang.Thread.run(Thread.java:1583)

2

Check your network connectivity. The download from that URL https://mirrors.tuna.tsinghua.edu.cn/jenkins/plugins/command-launcher/134.v025a_5fcf9dea_/command-launcher.hpi works fine for me.