After applying a patch or performing an upgrade to vCenter Server 7.0 or 8.0, the SNMP service enters a disabled and inactive state. This prevents monitoring tools from retrieving information or receiving traps from the vCenter Server Appliance (VCSA). This issue commonly occurs during vCenter upgrade procedures or in-place patching where the vmware-snmp RPM package is updated.
Symptoms:
After applying a patch to vCenter Server
# service snmpd statussnmpd.service - VMware SNMP Server DaemonLoaded: loaded (/lib/systemd/system/snmpd.service; disabled; vendor preset: enabled)Active: inactive (dead)
This is a known issue with vCenter 8.0.
Broadcom Engineering are aware of this issue and are currently working on a solution for the future version of vCenter 8.0.x
Workaround:
To enable and start snmpd service perform the following commands.
# systemctl enable snmpd.service# systemctl start snmpd.service