vSAN health alert "All hosts contributing stats" triggered due to missing SSL certificates on ESXi Hosts.

Products

• VMware vSAN

Issue/Introduction

Symptoms:

• vSAN Skyline Health alert: "All hosts contributing stats" is triggered.
  
  
• vSAN performance graphs show missing data for specific hosts.
  
  
• The /var/run/log/vsanmgmt.log on the master node contains the following errors:
  

  vsand[####]: [opID=vsan-####-#### statscollector::RetrieveRemoteStats] Error happened during RetrieveRemoteStats of hostIps [####], type: <class 'FileNotFoundError'>, message: [Errno 2] No such file or directory

 

Environment

• VMware vSAN 8.x / 9.x
• VMware ESXi

Cause

Primary SSL certificate files (rui.crt and rui.key) are physically missing from the /etc/vmware/ssl/ directory. This typically occurs after a failed automated certificate renewal process where the files are deleted but not replaced.

Resolution

To resolve this issue, restore the certificate files and restart the management services:

• Log in to the affected ESXi host via SSH.
• Navigate to the SSL directory: cd /etc/vmware/ssl/
• Restore the certificate and key from the backup files: cp rui.crt.bkp rui.crt cp rui.key.bkp rui.key
• Restart the vSAN management daemon to load the restored certificates: /etc/init.d/vsanmgmtd restart
• In the vSphere Client, select the Host > Configure > System > Certificate and click Renew Certificate to ensure the host receives a fresh VMCA certificate.
• Verify that the health alert clears and statistics resume.

Additional Information

• For issue because of the SSL certificate errors, see  vSAN Host Not Contributing Stats reports after Cert change due to SSL certificate errors
• For instructions on retrieving logs, see How to collect vSAN support bundles.
• To speak with a customer representative or a Support Engineer, see Contact Support.
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