kernel_stats

check_kernel_stats

Checks some metrics of the linux kernel. Currently support context switches, process creations and total number of threads.

• Examples
• Argument Defaults
• Attributes

Implementation

Windows	Linux	FreeBSD	MacOSX
	✅

Examples

Default Check

check_kernel_stats
OK - Context Switches 29.2/s, Process Creations 12.7/s, Threads 2574 |'ctxt'=29.2/s 'processes'=12.7/s 'threads'=2574;8000;10000;0

Example using NRPE and Naemon

Naemon Config

define command{
    command_name         check_nrpe
    command_line         $USER1$/check_nrpe -H $HOSTADDRESS$ -n -c $ARG1$ -a $ARG2$
}

define service {
    host_name            testhost
    service_description  check_kernel_stats
    use                  generic-service
    check_command        check_nrpe!check_kernel_stats!
}

Argument Defaults

Argument	Default Value
warning	threads > 8000
critical	threads > 10000
empty-state	3 (UNKNOWN)
empty-syntax	%(status) - No metrics found
top-syntax	%(status) - %(list)
ok-syntax	%(status) - %(list)
detail-syntax	%(label) %(human)

Check Specific Arguments

Argument	Description
type	Select metric type to show, can be: ctxt, processes or threads

Attributes

Filter Keywords

these can be used in filters and thresholds (along with the default attributes):

Attribute	Description
name	Name of the metric
label	Label of the metric
rate	Rate of this metric
current	Current raw value
human	Human readable number