Site Recovery Plugin not showing up or blank in vSphere Client after deployment

Products

• VMware Live Recovery

Issue/Introduction

+++ Registration of the SRM with vCenter completes but Site Recovery UI does not load-up correctly in vSphere Client.



--  in vCenter's virgo logs, we see the plugin fails to download.

[2024-11-25T16:32:56.098+13:00] [ERROR] sdk-plugin-deployer-125       com.vmware.vise.plugin.status.RemotePluginStatusServiceImpl       DOWNLOAD_FAILED: Error downloading plugin package com.vmware.drui.plugin:9.0.2.24170200 from https://SRM-FQDN.com:443/drplugin/plugin.json.zip. Reason: URL is unreachable. Make sure that the URL is reachable. com.vmware.vise.plugin.download.PluginDownloadException: org.apache.http.client.HttpResponseException: status code: 503, reason phrase: Service Unavailable
        at com.vmware.vise.plugin.download.PluginDownloadServiceImpl.download(PluginDownloadServiceImpl.java:188)
        at com.vmware.vise.plugin.async.task.PluginDownloadTask.run(PluginDownloadTask.java:51)
        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:750)
Caused by: org.apache.http.client.HttpResponseException: status code: 503, reason phrase: Service Unavailable
        at org.apache.http.impl.client.AbstractResponseHandler.handleResponse(AbstractResponseHandler.java:70)
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:223)
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:165)
        at com.vmware.vise.plugin.download.PluginDownloadServiceImpl.downloadPackageInfo(PluginDownloadServiceImpl.java:305)
        at com.vmware.vise.plugin.download.PluginDownloadServiceImpl.download(PluginDownloadServiceImpl.java:165)
        ... 11 common frames omitted


--  Manual download of Site Recovery Plugin in vCenter shell/SSH using wget fails with 403 forbidden error.

The command would look like this:
wget --no-check-certificate https://SRM-FQDN/drplugin/plugin.json.zip

Environment

Site Recovery Manager 8.x
Vmware Live Site Recovery 8.x
Vmware Live Site Recovery 9.x

Cause

1) vCenter fails to download the plugin due to incorrect proxy settings (if any involved).
2)  Site Recovery Plugin download would fail even if there is network disconnection due to some other reason like no connectivity between SRM and VR, port issues, any physical networking changes or virtual switch configuration changes.

Resolution

--> Set the correct proxy settings in vCenter Appliance Management.
--> Ensure the connectivity between vCenter and SRM is good. Both are reachable to each-other over port 443.
-->  Once connectivity is established, try download the plugin using wget command to ensure the download is working.
--> If download is working, restart the vsphere client service :
service-control --stop vsphere-ui && service-control --start vsphere-ui
--> Observe vCenter virgo logs for drplugin download being successful