Troubleshooting guide

Troubleshooting guide

Troubleshooting vSphere

This is for performance troubleshooting:

Official VMware course (3 days):

VMware vSphere: Troubleshooting V4 -


Troubleshooting ESX

And for documents

xtravirt published a HA troubleshooting whitepaper

ESX log files

Log File





Records activities related to the virtual machines and ESX host


Vmkernel Warnings

A copy of everything marked as a warning or higher severity from vmkernel log. Easier to look through than vmkernel log


Vmkernel Summary

Used for avaialability and uptime statistics. Human-readable summary in vmksummary.txt


Host Agent Log

Contains information on the agent that manages and configures the ESX host and its virtual machines


VirtualCenter Agent

Contains information on the agent that communicates with VirtualCenter


Service Console

Log from the Linux kernel. Useful for underlying Linux issues. The kernel has no awareness of VMs running on the VMkernel


ESX Boot Log

ESX Boot log, logs all ESX boot events


Web Access

Records information on Web-based access to ESX Server


Authentication Log

Contains records of connections that require authentication, such as VMware daemons and actions initiated by the xinetd daemon


ESX Firewall Log

Contains all firewall rule events


High Availability Log

Contains information related to the High Availability (HA) service


ESX Update Log

Logs all updates completed using the esxupdate tool


Logs rotated by logrotate, see KB3402740. Rotated with a numeric extension, current log has no extension and the next newest one has a .1 extension.

Log is symbollically linked to the current real file. Run an 'ls -l logname.log' to see the link.



Troubleshooting VMware HA - Troubleshooting VMware High Availability (HA)


Troubleshooting VMware Converter - Best practices for using and troubleshooting VMware Converter


Troubleshooting hardware

Use memtest86 to check if memory is fine.

See also:

Decoding Machine Check Exception (MCE) output after a purple screen error

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‎10-31-2009 09:18 AM
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