Notification watcher webhook not registered to NSX

Products

• VCF Operations for Networks
• VMware NSX

Issue/Introduction

• NSX Datasource in VCF Operations for Networks shows error: 
  
  Notification watcher webhook not registered to NSX
  
  
• VCF Operations for Networks collector logs shows the following error:
  
  /var/log/arkin/collector/latest.log
DPTaskStatus
{
        taskId='com.vnera.dataproviders.core.impl.vmware.nsxt.tasks.NSXTNotificationStateWatcherTask_SystemEvent_CONFIG'
        collectedDataType=CONFIG
        taskExecType=SCHEDULED
        isSuccess=false
        timestamp=
        errorCode='NSXT_NOTIFICATION_WEBHOOK_DISABLED'
        errorMessage='com.vnera.dataproviders.core.impl.vmware.nsx.utils.StateWatcherException: Notification watcher webhook not registered in NSX-T.
        at com.vnera.dataproviders.core.impl.vmware.nsxt.tasks.NSXTNotificationStateWatcherTask.checkIfWebhookRegistered(NSXTNotificationStateWatcherTask.java:66)
        at com.vnera.dataproviders.core.impl.vmware.nsxt.tasks.NSXTNotificationStateWatcherTask.doRun(NSXTNotificationStateWatcherTask.java:53)
        at com.vnera.dataproviders.core.common.impl.dataprovider.tasks.AbstractTask.run(AbstractTask.java:165)
        at com.vnera.dataproviders.tasker.Tasker_ScheduledTaskWrapper.run(Tasker.java:486)
        at com.google.common.util.concurrent.MoreExecutors_ScheduledListeningDecorator_NeverSuccessfulListenableFutureTask.run(MoreExecutors.java:678)
        at java.base/java.util.concurrent.Executors_RunnableAdapter.call(Executors.java:539)
        at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor_ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
        at java.base/java.util.concurrent.ThreadPoolExecutor_Worker.run(ThreadPoolExecutor.java:635)
        at java.base/java.lang.Thread.run(Thread.java:840)
        taskData={timeTaken=11, healthMsgPayload=, healthMsgPayloadKey=NSXT_NOTIFICATION_WEBHOOK_STATUS}
}
  
  
• Running the following API call to the NSX Manager does not return any watcher.
  
  GET <NSX-Manager>/api/v1/notification-watchers/

Environment

VMware NSX
VMware VCF Operations for Networks

Resolution

Workaround:

To workaround issue disable/enable the NSX data source to recreate the watcher.

1. In VCF Operations for Networks UI, go to Settings > Accounts and Data Sources.
2. Locate the problematic NSX data source.
3. On the right hand side use the slider to disable datasource. 
4. Wait a few minutes and enable data source again.
5. Run the following API call to the NSX Manager and confirm a watcher is now returned.
   
   GET <NSX-Manager>/api/v1/notification-watchers/
   
   
6. The error should clear from the VCF Operations for Networks UI after a few minutes.