You can see ESX logs:

  • From the Service Console
  • From the vSphere Client connected directly to the ESX host (click Home > Administration > System Logs)
  • From the VMware Infrastructure Client connected directly to the ESX host (click Administration > System Logs)

The vmkernel logs (which log everything related to the kernel/core of the ESX) are located at /var/log/vmkernel.

The vmkwarning logs (which log warnings from the vmkernel) are located at /var/log/vmkwarning.

The vmksummary logs (which provide a summary of system activities such as uptime, downtime, reasons for downtime) are located at /var/log/vmksummary.

The hostd log (which is the log of the ESX management service of the ESX) are located at /var/log/vmware/hostd.log.

The messages log (which log activity on the Service Console operating system) is located at /var/log/messages.

The VirtualCenter Agent log is located at /var/log/vmware/vpx/vpxa.log.

The Automatic Availability Manager (AAM) logs are located at /var/log/vmware/aam/vmware_-xxx.log.

The SW iSCSI logs are located at /var/log/vmkiscsid.log.

The System boot log is located at /var/log/boot-logs/sysboot.log.

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