vCenter log bundle process in highly utilized vSAN vCenter takes upwards of 45 minutes to generate

Products

• VMware vCenter Server

Issue/Introduction

When generating a log bundle in a highly utilized vCenter with multiple vSAN clusters, the vCenter log bundle takes upwards of 45 minutes to generate. Log bundle does generate successfully after the long wait.

Environment

VMware vCenter 8.x

Cause

This can occur due to the transfer of large amounts of vSAN data. Environmental factors also may slow collection as well during pulling of vSAN health service logs.

The action.log file of the generated log bundle will show the following:

[YYYY-MM-DDTHH:MM:SS] run IGNORE_ERROR,IGNORE_MISSING,TIMEOUT python /usr/lib/vmware-vpx/vsan-health/vsan-vc-health-status.py cluster-health (/etc/vmware/vm-support/vsan-health.mfx) took 165.000 sec
[YYYY-MM-DDTHH:MM:SS] run IGNORE_ERROR,IGNORE_MISSING,TIMEOUT python /usr/lib/vmware-vpx/vsan-health/vsan-vc-health-status.py rvc-basic-support-information (/etc/vmware/vm-support/vsan-health.mfx) took 832.000 sec

Resolution

Note: Since log bundle generation does eventually complete, it is recommended that no actions be taken to resolve this. If log bundle generation time is an issue in the environment, then the following changes may be made to speed up log collection.

• Generate the log bundle without vSAN information via vCenter command line:

  • vc-support -e 'VirtualAppliance:VsanHealth VirtualAppliance:VsanHealthService' 

• To permanently make this change to the log pull configuration, comment out the following lines in the vCenter file /etc/vmware/vm-support/vsan-health.mfx

  • run  IGNORE_ERROR,IGNORE_MISSING,TIMEOUT=600     $VMWARE_PYTHON_HOME/python $VMWARE_CIS_HOME/vsan-health/vsan-vc-health-status.py rvc-basic-support-information
    run  IGNORE_ERROR,IGNORE_MISSING,TIMEOUT=600     $VMWARE_PYTHON_HOME/python $VMWARE_CIS_HOME/vsan-health/vsan-vc-health-status.py cluster-health
    run  IGNORE_ERROR,IGNORE_MISSING,TIMEOUT=600     $VMWARE_PYTHON_HOME/python $VMWARE_CIS_HOME/vsan-health/vsan-vc-health-status.py other-type-objects