Remediation of host fails with health check failure

Products

• VMware vCenter Server

Issue/Introduction

• Below error message is seen on vCenter Server "Updates" page when performing remediation: 
  
  Remediation of cluster failed
Health Check for '<cluster name>' failed
Health Check fails to retrieve data about service 'Workload Management Platform' on '<cluster id>'. Verify that the service 'Workload Management Platform' is running and try again. 
  
  
• "WCP Service Health Alarm" is observed on vCenter Server web page.
• Below error messages can be found in /var/log/vmware/wcp/wcpsvc.log on vCenter Server:
  
  Failed to read VCSA proxy settings from file '/etc/sysconfig/proxy' with error: open /etc/sysconfig/proxy: too many open file
Unable to get the list of clusters: Post "http://localhost:1080/sdk": dial tcp: lookup localhost: device or resource busy
Unable to collect information for cluster agencies: Post "http://localhost:1080/sdk": dial tcp: lookup localhost: device or resource busy

Cause

Wcp service on vCenter Server is not in a healthy state.

Resolution

• To workaround the issue, restart wcp service on vCenter Server with below command:
  
  service-control --restart wcp


• Alternatively, the service can also be restarted in vCenter Server Appliance Management Interface(VAMI) by selecting "Workload Control Place" service and click "RESTART".