Linux Kernel Version

[Edwin Zoeller]

Thanks to all on this

From: MAD [mailto:mad at b-care.net]
Sent: Friday, June 29, 2012 2:16 AM
To: nagios-users at lists.sourceforge.net
Subject: Re: [Nagios-users] Linux Kernel Version

Hi,

You could also do a SNMPWALK on the hrSWInstalledName table (1.3.6.1.2.1.25.6.3) and extract the latest installed kernel version by doing some regex work.

Marc-André

On 06/29/2012 08:45 AM, Stuart Browne wrote:
Current as in installed, or current as in available?

We wrote this a while ago to see if the most recently installed kernel is the bootable kernel:

#!/bin/bash
#
# Check if current kernel is being used.
#

GRUBBY=/sbin/grubby
GREP=/bin/grep
UNAME=/bin/uname

OUTPUT="Current kernel running."
EXIT_VAL=0

if $GRUBBY --default-kernel | $GREP -vq $($UNAME -r); then
        OUTPUT="Kernel updated, reboot required."
        EXIT_VAL=1
fi

echo $OUTPUT
exit $EXIT_VAL

But as Daniel said, a trivial plugin it's NRPE calling the two-line routine:

#!/bin/bash
/bin/uname -r
exit $?

Or using SNMP:

define command {
  command_name  return_kernel_version
  command_line $USER1$/check_snmp -H $HOSTADDRESS$ -o SNMPv2-MIB::sysDescr.0 -P 2c -C public
}

The choice of what to use is yours.

Stuart

From: Daniel Wittenberg [mailto:daniel.wittenberg.r0ko at statefarm.com]
Sent: Friday, 29 June 2012 1:18 PM
To: Nagios Users List
Subject: Re: [Nagios-users] Linux Kernel Version

I haven't seen one, but would be trivial to write one.  You looking to see the rpm -q kernel output or something like uname -a?

Dan

On Jun 28, 2012, at 10:10 PM, Edwin Zoeller wrote:



Does anyone know of or have a plugin that will display the current kernel level for Redhat?

Thanks,

Ed

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