java.net.UnknownHostException: www.google.com

Jenkins JIRA | abonderud | 8 years ago
  1. 0

    When attempting to download a new plugin through the plugin update center, Hudson receives an UnknownHostException. I believe this is becuase of our internet proxy blocking the connection. However, I cannot determine how to tell Hudson what the proxy setting is. Below is the actual message I am getting: * Checking internet connectivity * java.net.UnknownHostException: www.google.com at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177) at java.net.Socket.connect(Socket.java:519) at java.net.Socket.connect(Socket.java:469) at sun.net.NetworkClient.doConnect(NetworkClient.java:157) at sun.net.www.http.HttpClient.openServer(HttpClient.java:394) at sun.net.www.http.HttpClient.openServer(HttpClient.java:529) at sun.net.www.http.HttpClient.(HttpClient.java:233) at sun.net.www.http.HttpClient.New(HttpClient.java:306) at sun.net.www.http.HttpClient.New(HttpClient.java:323) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:788) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:767) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:654) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:977) at hudson.model.UpdateCenter$ConnectionCheckJob.testConnection(UpdateCenter.java:376) at hudson.model.UpdateCenter$ConnectionCheckJob.run(UpdateCenter.java:358) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619) FindBugs Plugin Failure java.net.UnknownHostException: hudson.dev.java.net at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1296) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1290) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:944) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:234) at hudson.model.UpdateCenter$InstallationJob.run(UpdateCenter.java:418) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619) Caused by: java.net.UnknownHostException: hudson.dev.java.net at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177) at java.net.Socket.connect(Socket.java:519) at java.net.Socket.connect(Socket.java:469) at sun.net.NetworkClient.doConnect(NetworkClient.java:157) at sun.net.www.http.HttpClient.openServer(HttpClient.java:394) at sun.net.www.http.HttpClient.openServer(HttpClient.java:529) at sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:271) at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:328) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:172) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:767) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:158) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:977) at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2031) at java.net.URLConnection.getHeaderFieldInt(URLConnection.java:579) at java.net.URLConnection.getContentLength(URLConnection.java:474) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getContentLength(HttpsURLConnectionImpl.java:378) at hudson.model.UpdateCenter$InstallationJob.run(UpdateCenter.java:417) ... 6 more

    Jenkins JIRA | 8 years ago | abonderud
    java.net.UnknownHostException: www.google.com
  2. 0

    When attempting to download a new plugin through the plugin update center, Hudson receives an UnknownHostException. I believe this is becuase of our internet proxy blocking the connection. However, I cannot determine how to tell Hudson what the proxy setting is. Below is the actual message I am getting: * Checking internet connectivity * java.net.UnknownHostException: www.google.com at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177) at java.net.Socket.connect(Socket.java:519) at java.net.Socket.connect(Socket.java:469) at sun.net.NetworkClient.doConnect(NetworkClient.java:157) at sun.net.www.http.HttpClient.openServer(HttpClient.java:394) at sun.net.www.http.HttpClient.openServer(HttpClient.java:529) at sun.net.www.http.HttpClient.(HttpClient.java:233) at sun.net.www.http.HttpClient.New(HttpClient.java:306) at sun.net.www.http.HttpClient.New(HttpClient.java:323) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:788) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:767) at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:654) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:977) at hudson.model.UpdateCenter$ConnectionCheckJob.testConnection(UpdateCenter.java:376) at hudson.model.UpdateCenter$ConnectionCheckJob.run(UpdateCenter.java:358) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619) FindBugs Plugin Failure java.net.UnknownHostException: hudson.dev.java.net at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1296) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1290) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:944) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:234) at hudson.model.UpdateCenter$InstallationJob.run(UpdateCenter.java:418) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619) Caused by: java.net.UnknownHostException: hudson.dev.java.net at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177) at java.net.Socket.connect(Socket.java:519) at java.net.Socket.connect(Socket.java:469) at sun.net.NetworkClient.doConnect(NetworkClient.java:157) at sun.net.www.http.HttpClient.openServer(HttpClient.java:394) at sun.net.www.http.HttpClient.openServer(HttpClient.java:529) at sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:271) at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:328) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:172) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:767) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:158) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:977) at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:2031) at java.net.URLConnection.getHeaderFieldInt(URLConnection.java:579) at java.net.URLConnection.getContentLength(URLConnection.java:474) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getContentLength(HttpsURLConnectionImpl.java:378) at hudson.model.UpdateCenter$InstallationJob.run(UpdateCenter.java:417) ... 6 more

    Jenkins JIRA | 8 years ago | abonderud
    java.net.UnknownHostException: www.google.com
  3. 0

    Need help with java.net.UnknownHostException

    Google Groups | 5 years ago | Pierre Retoille
    java.net.UnknownHostException: updates.jenkins-ci.org
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  5. 0

    Kohsuke Kawaguchi ยป DNS outage with jenkins-ci.org

    kohsuke.org | 4 months ago
    java.net.UnknownHostException: updates.jenkins-ci.org
  6. 0

    Jenkins users - Need help with java.net.UnknownHostException

    nabble.com | 4 months ago
    java.net.UnknownHostException: updates.jenkins-ci.org

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Root Cause Analysis

  1. java.net.UnknownHostException

    www.google.com

    at java.net.PlainSocketImpl.connect()
  2. Java RT
    HttpURLConnection.getInputStream
    1. java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
    2. java.net.Socket.connect(Socket.java:519)
    3. java.net.Socket.connect(Socket.java:469)
    4. sun.net.NetworkClient.doConnect(NetworkClient.java:157)
    5. sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
    6. sun.net.www.http.HttpClient.openServer(HttpClient.java:529)
    7. sun.net.www.http.HttpClient.<init>(HttpClient.java:233)
    8. sun.net.www.http.HttpClient.New(HttpClient.java:306)
    9. sun.net.www.http.HttpClient.New(HttpClient.java:323)
    10. sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:788)
    11. sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:767)
    12. sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:654)
    13. sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:977)
    13 frames
  3. Hudson
    UpdateCenter$ConnectionCheckJob.run
    1. hudson.model.UpdateCenter$ConnectionCheckJob.testConnection(UpdateCenter.java:376)
    2. hudson.model.UpdateCenter$ConnectionCheckJob.run(UpdateCenter.java:358)
    2 frames
  4. Java RT
    Thread.run
    1. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
    2. java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    3. java.util.concurrent.FutureTask.run(FutureTask.java:138)
    4. java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    5. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    6. java.lang.Thread.run(Thread.java:619)
    6 frames