vSAN Performance Charts are empty (No information is being displayed)

Products

• VMware vSAN

Issue/Introduction

Symptoms:

When checking the vSAN - Backend for any of the hosts in the vSAN cluster none of the graphs loads any data.
No error messages just blank.
You can check this in two places:

• Cluster level: Web Client > vSAN Cluster > Monitor > vSAN -Performance >  Backend
• Host Level: Web Client > Click on host > Monitor > vSAN - Performance > Backend

 

 

 

Cause

• This may be caused by ports not open between ESXi and vCenter.
• Additionally, the NTP, vSAN Management (vsanmgmtd), or vCenter services may not be running properly.
• The service handshake for the performance service functionally did not properly initiate.
• The vCenter version is down rev of the ESXI version
• vSAN VASA providers are offline and not working properly

Note: As of version 6.7 or above there should only be one single vSAN VASA provider per cluster instead of per host.

Resolution

To resolve this issue, please check the below steps:

• Ensure all the firewall ports required for vSAN are open on the vCenter server. ( Refer to VMware Ports and Protocols ) 
• Make sure that the NTP service is running on all the hosts, with the following command: /etc/init.d/ntpd status.
• If the NTP service is not running start it: /etc/init.d/ntpd start.

Workaround:
Try to use the following workaround as perhaps the services might be causing the display issue:

• Disable and re-enable vSAN Performance Service: Web Client > Click vSAN Cluster > Configure/Manage > vSAN - Services > Performance Service > Edit > Disable it and apply changes > Enable back and apply.
• On all Hosts in the Cluster: Restart vSAN management service, SSH into the hosts, and run this command: /etc/init.d/vsanmgmtd restart or stop/start
• On the vCenter Machine: Restart Service "VMware Performance Charts" (vmware-perfcharts) with the command: service-control --restart vmware-perfcharts or by restarting the service from the web client
• On the vCenter Machine: Restart "VMware vSphere Profile-Driven Storage Service" (vmware-sps) with the command: service-control --restart vmware-sps or by restarting the service from the web client.
• On the vCenter Machine: Restart "VMware Virtual SAN Health Service" (vmware-vsan-health) with the command:  service-control --restart vmware-vsan-health or restart the service from the web client.
• On all Hosts in the Cluster: Restart the vSAN vendor provider, SSH into the hosts, and run this command: /etc/init.d/vsanvpd restart. (Only for hosts below version 6.7)
• Check if all VASA providers are Online and Re-scan of them: In the Web client > click vCenter > Configure > Storage Providers > Click "Synchronize Storage Providers". VASA Provider Registration Troubleshooting (49798)
• Check if port 8080 (TCP) is open between the ESXI hosts and vCenter.  Use nc -z <IP addr> 8080
• Reboot vCenter