Uploaded image for project: 'Jenkins'
  1. Jenkins
  2. JENKINS-62413

This Jenkins instance appears to be offline, Unknownhost exception for updates,jenkins.io

    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Blocker
    • Resolution: Cannot Reproduce
    • Component/s: _unsorted
    • Labels:
      None
    • Environment:
      CentOS 8. Docker, Jenkins 2.237.
    • Similar Issues:

      Description

      Hi,

      I installed CentOS 8 and Docker and Docker compose on top of it. When I Installed Jenkins and tried to login the login works and logs show Jenkins installed successfully. Version is 2.237. 

      The next page shows This Jenkins instance appears to be offline. When I checked the logs, get the below exception.

       

      hudson.util.Retrier#start: The attempt #1 to do the action check updates server failed with an allowed exception:
      java.net.UnknownHostException: updates.jenkins.io
      at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
      at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
      at java.net.Socket.connect(Socket.java:607)
      at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:666)
      at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
      at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
      at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
      at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
      at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
      at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
      at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162)
      at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056)
      at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1570)
      at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498)
      at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:268)
      at hudson.model.DownloadService.loadJSON(DownloadService.java:114)
      at hudson.model.UpdateSite.updateDirectlyNow(UpdateSite.java:212)
      at hudson.model.UpdateSite.updateDirectlyNow(UpdateSite.java:207)
      at hudson.PluginManager.checkUpdatesServer(PluginManager.java:1767)
      at hudson.util.Retrier.start(Retrier.java:63)
      at hudson.PluginManager.doCheckUpdatesServer(PluginManager.java:1738)
      at jenkins.DailyCheck.execute(DailyCheck.java:93)
      at hudson.model.AsyncPeriodicWork.lambda$doRun$0(AsyncPeriodicWork.java:100)
      at java.lang.Thread.run(Thread.java:748)

       

      When I ping updates.jenkins.io get packet loss. When I ping google.com it works. Both from the host and also from the Windows system.

      Thanks.

       

        Attachments

          Activity

          Hide
          danielbeck Daniel Beck added a comment -

          Looks like it was a transient infra issue.

          If you want people to find your issue reports, file them properly in the INFRA project.

          Show
          danielbeck Daniel Beck added a comment - Looks like it was a transient infra issue. If you want people to find your issue reports, file them properly in the INFRA project.

            People

            • Assignee:
              ramanathanprasanna76 Prasanna Ramanathan
              Reporter:
              ramanathanprasanna76 Prasanna Ramanathan
            • Votes:
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              Watchers:
              2 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: