ESXi host gets disconnected from vCenter server at random intervals

Products

• VMware vSphere ESXi

Issue/Introduction

• ESXi host gets  disconnected from vCenter server intermittently.

• On ESXi host, hostd service keeps crashing during the disconnect and generates host-zdump crash dumps in /var/core/ directory.

• In the /var/run/log/vobd.log on the ESXi host, you may see entries similar to:

  202#-0#-##T22:23:02.118Z: [UserWorldCorrelator] 5873###59960us: [esx.problem.hostd.core.dumped] /bin/hostd crashed (21 time(s) so far) and a core file may have been created at /var/core/hostd-zdump.001. This may have caused connections to the host to be dropped.

Environment

VMware vSphere ESXi 8.x

Cause

This issue can occur due to a hardware issue related to one or more physical CPU's.

Resolution

If you encounter the symptoms mentioned in this article contact Broadcom Support.