/storage/core partition full due to core files in vCenter Server Appliance

Products

• VMware vCenter Server

Issue/Introduction

• A common issue observed in vCenter Server Appliances is the /storage/core partition filling up. This occurs due to the generation of numerous core dump files, such as core.netlogond.####, core.updatemgr-worke.###.
• While the exact partition size varies by VCSA deployment option, this problem can affect any sized appliance, leading to critical disk space exhaustion.

 

Sample Core files :

Environment

• VMware vCenter Server Appliance 8.x

Cause

This occurs due to the repeated generation of core dump files, commonly named:

• core.netlogond.####

• core.updatemgr-worker.###

• Other service-related core files

These files are typically created when internal VCSA services crash or encounter fatal errors.

Resolution

Workaround:

To free up disk space, manually delete core files located in /storage/core using the rm -f command.