You might need the ESX/ESXi system log files to resolve technical issues.

ESX/ESXi System Logs lists log files associated with ESX systems.

ESX/ESXi System Logs

Component

Location

ESX Server 2.x Service log

/var/log/vmware/vmware-serverd.log

ESX Server 3.x or ESX Service log

/var/log/vmware/hostd.log

vSphere Client Agent log

/var/log/vmware/vpx/vpxa.log

Virtual Machine Kernel Core file

/root/vmkernel-core.date

and

/root/vmkernel-log.date

These files are present after you reboot your machine.

Syslog log

/var/log/messages

Service Console Availability report (ESX only)

/var/log/vmkernel

VMkernel Messages (ESX only)

/var/log/vmkernel

VMkernel Alerts and Availability report (ESX only)

/var/log/vmkernel

VMkernel Warning (ESX only)

/var/log/vmkwarning

Virtual Machine log file

vmware.log in the same directory as the .vmx file for the virtual machine

Virtual Machine Configuration file

virtual_machine_name/virtual_machine_name.vmx located on a datastore associated with the managed host. Used the virtual machine summary page in the vSphere Client to determine the datastore on which this file is located.