VMware Cloud Foundations "Management operation failed using server's out-of-band management port" alert is generated in SDDC Manager

Products

• VMware Cloud Foundation

Issue/Introduction

Symptoms:

• In the SDDC Manager UI:
  
  Management operation failed using server's out-of-band management port
  
  
• In the evosddc-debug.log file of the SDDC Manager virtual machine, you entries similar to:
  
  2017-02-13 20:45:59.154 [pool-52-thread-2] DEBUG [com.vmware.vrack.vrm.pmm.service.impl.AlertDetectionServiceImpl] Desc 4: Alert - Management operation failed using server's out-of-band management port for rack DC1-VCF-1, server N11
  

Environment

VMware Cloud Foundation 2.1.x
VMware Cloud Foundation 2.0.x

Resolution

This issue is resolved VMware Cloud Foundation version 2.1.1, available at VMware Downloads.

To workaround this issue, if you are unable to upgrade to VMware Cloud Foundation version 2.1.1:

1. Log in to the management switch as administrator.
2. Make a copy of the /etc/dhcp/dhcpd.conf file:
   
   cp /etc/dhcp/dhdpd.conf ~
   
   
3. Edit the /etc/dhcp/dhcpd.conf file, using a text editor.
4. Add ping-check false to the subnet stanza.
   
   For example:
   
   subnet 192.168.0.0 netmask 255.255.255.0 {
   option routers 192.168.0.1;
   range 192.168.0.50 192.168.0.100;
   ping-check false;
   }
   
   
5. Save and close the file.
6. Run this command to restart the dhcp service:
   
   service isc-dhcp-server restart
   
   
7. Repeat steps 1 - 6 on all other management switches.