Cisco Cisco UCS C22 M3 Rack Server Guida Alla Risoluzione Dei Problemi

Contributed by Mastin Bailey, Cisco TAC Engineer.

Aug 11, 2015

Introduction
Prerequisites
     Components Used
Background Information
     Expected Reboots
     Unexpected Reboots
     Key Points
Gather Log Bundles for Analysis
Expected Output for Different Reboot and Shutdown Conditions
     Reboot from OS - ESXi, RHEL, and Windows
        OBFL Log
        RHEL - /var/log/messages
        Windows - Event Log
     Shutdown from OS - ESXi, RHEL, and Windows
        OBFL Log:
        ESXi - /var/log/hostd.log
        RHEL - /var/log/messages
        Windows - Event Log
     Power On from CIMC
        OBFL Log:
     Power Cycle from CIMC
        OBFL Log
     Power Off from CIMC
        OBFL Log
     Power Loss from PSU Failure
        OBFL Log
     Front Button Power Off
        OBFL Log
     Front Button Power On
        OBFL Log
Related Information

This document describes how to determine whether a reboot or shutdown was initiated in hardware or from
the operating system (OS).

There are several good log locations to focus on when you determine why a server rebooted or shutdown.
When you search through the Cisco Integrated Management Controller (CIMC) Tech Support, look at either
the /var/log/messages or Onboard Failure Logging (OBFL) logs.