SNMP queries time out randomly in VMware vCenter Server Appliance

Products

• VMware vCenter Server

Issue/Introduction

After installing or upgrading to VMware vCenter Server Appliance 6.0 Update 2, you experience these symptoms:

• SNMPD stops sending traps.
• SNMP queries time out randomly.
• Running top command from the vCenter Appliance bash prompt displays the CPU usage of 100% for SNMPD.

Environment

VMware vCenter Server Appliance 6.0.x

Resolution

Resolved in vCenter Server Appliance 6.0 Update 2a.

 

To work around this issue:

1. Run these commands from the Pi Shell of the vCenter Server Appliance:
   
   
   snmp.disable
   snmp.enable
   
   
2. Take an SSH session and run this command from the bash shell:
   
   # kill -9 `pidof snmpd`

Note: The watchdog service on the vCenter Appliance restarts the service immediately when you run the kill -9 `pidof snmpd` through SSH.