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RedHat Linux Server got Rebooted - kernel: Uhhuh. NMI received for unknown reason
Hello all,
I am trying to determine root cause for reboot of redhat linux server. this server is part of a redhat cluster. Server got rebooted abnormally and got fenced off from the cluster.
i see the below messages in /var/log/messages :
kernel: Uhhuh. NMI received for unknown reason 2c on CPU 0.
kernel: Dazed and confused, but trying to continue
kernel: Do you have a strange power saving mode enabled?
kernel: CMAN: removing node from the cluster : Missed too many heartbeats
kernel: CMAN: Initiating transition, generation 5
kernel: CMAN: removing node from the cluster : No response to messages
kernel: CMAN: quorum lost, blocking activity
ccsd[7001]: Cluster is not quorate. Refusing connection.
ccsd[7001]: Error while processing connect: Connection refused
syslogd 1.4.1: restart.
syslog: syslogd startup succeeded
kernel: klogd 1.4.1, log source = /proc/kmsg started.
kernel: Linux version 2.6.9-89.ELsmp (mockbuild@hs20-bc1-2.build.redhat.com) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-11)) #1 SMP Mon Apr 20 10:34:33 EDT 2009
kernel: BIOS-provided physical RAM map:
kernel: ********************************************************
kernel: * This system has more than 16 Gigabyte of memory. *
kernel: * It is recommended that you read the release notes *
kernel: * that accompany your copy of Red Hat Enterprise Linux *
kernel: * about the recommended kernel for such configurations *
kernel: ********************************************************
Can anyone advice me about the error and what could cause this?
kernel: Uhhuh. NMI received for unknown reason 2c on CPU 0.
kernel: Dazed and confused, but trying to continue
System is currently on :
Red Hat Enterprise Linux ES release 4 (Nahant Update 8)
Kernel \r on an \m
Thanks,
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