proxyHost= <ip>
proxyPort=3128
[2021-06-11T11:01:41.985Z] [INFO ] ync-task-executor-pool-12510 com.vmware.vise.plugin.download.PluginDownloadServiceImpl Downloading plug-in package 'com.purestorage.plugin.vsphere:3.1.3.0' with temporary name '/etc/vmware/vsphere-ui/vc-packages/vsphere-client-serenity/com.purestorage.plugin.vsphere-3.1.3.0/plugin-package.tmp'.
[2021-06-11T11:01:41.987Z] [INFO ] ync-task-executor-pool-12510 com.vmware.vise.plugin.download.PluginDownloadServiceImpl Downloading plugin package from https://<serverip>/download/purestorage-vsphere-plugin.zip?version=3.1.1, using proxy http://<proxy ip>:3128
[2021-06-11T11:01:49.144Z] [ERROR] ync-task-executor-pool-12510 com.vmware.vise.plugin.download.PluginDownloadServiceImpl Downloading plugin package: com.purestorage.plugin.vsphere:3.1.3.0 has failed. Cannot connect to host: https://<serverip>/download/purestorage-vsphere-plugin.zip?version=3.1.1, using proxy http://<proxy ip>:3128 java.net.NoRouteToHostException: No route to host (Host unreachable)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:681)
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 java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:352)
at com.vmware.vise.util.http.ConnectionManager.connect(ConnectionManager.java:284)
at com.vmware.vise.util.http.SimpleHttpClient.connect(SimpleHttpClient.java:354)
at com.vmware.vise.util.http.SimpleHttpClient.connect(SimpleHttpClient.java:324)
at com.vmware.vise.util.http.SimpleHttpClient.executeMethodResponseAsStream(SimpleHttpClient.java:222)
at com.vmware.vise.plugin.download.PluginDownloadServiceImpl.downloadPackageInfo(PluginDownloadServiceImpl.java:285)
at com.vmware.vise.plugin.download.PluginDownloadServiceImpl.writeToFile(PluginDownloadServiceImpl.java:251)
at com.vmware.vise.plugin.download.PluginDownloadServiceImpl.download(PluginDownloadServiceImpl.java:133)
at com.vmware.vise.plugin.async.task.PluginDownloadTask.run(PluginDownloadTask.java:73)
at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1640)
at com.vmware.vise.util.concurrent.QueuingCachedThreadPool$2.call(QueuingCachedThreadPool.java:873)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.vmware.vise.util.concurrent.QueuingCachedThreadPool$QueueProcessor.run(QueuingCachedThreadPool.java:1271)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at com.vmware.vise.util.concurrent.WorkerThreadFactory$1.run(WorkerThreadFactory.java:64)
at java.lang.Thread.run(Thread.java:748)
Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.
The issue is resolved in vCenter Server 7.0 Update 3
Workaround:
There is no workaround available.