Nagios Plugin check_pressure

check_pressure - check whether the given filesystems are mounted

[/etc/nrpe.d/check_pressure]
command[check_pressure]=/usr/lib/nagios/plugins/check_pressure

Usage note

This plugin checks Linux Pressure Stall Information (PSI) data.
Copyright (C) 2020 Davide Madrisan <[email protected]>

Usage:
  check_pressure --cpu [-w COUNTER] [-c COUNTER] [delay]
  check_pressure --io [--full] [-w COUNTER] [-c COUNTER] [delay]
  check_pressure --memory [--full] [-w COUNTER] [-c COUNTER] [delay]

Options:
  -C, --cpu       return the cpu pressure metrics
  -i, --io        return the io (block layer/filesystems) pressure metrics
  -m, --memory    return the memory pressure metrics
  -f, --full      select the data labeled "full" to calculate thresholds
                  instead of the one with "some" (io and memory only)
  -w, --warning COUNTER   warning threshold (in microseconds/s)
  -c, --critical COUNTER   critical threshold (in microseconds/s)
  -h, --help      display this help and exit
  -V, --version   output version information and exit
  "delay" is the delay in seconds between two proc reads (default: 1sec)

Note:
  It requires at least a kernel 4.20, which provides this information in the
  /proc/pressure folder.

Examples:
  check_pressure --cpu
  check_pressure --io
  check_pressure --memory --full 100 2

Example of output

> /usr/lib/nagios/plugins/check_pressure --cpu
pressure (CPU starvation) OK: 13103 microsecs/s | cpu_avg10=1.00% cpu_avg60=1.00% cpu_avg300=1.00% cpu_starvation/s=13103

> /usr/lib/nagios/plugins/check_pressure --io
pressure (IO starvation) OK: some:36 full:36 microsecs/s | io_some_avg10=0.00% io_some_avg60=0.00% io_some_avg300=0.00% io_some_starvation/s=36 io_full_avg10=0.00% io_full_avg60=0.00% io_full_avg300=0.00% io_full_starvation/s=36 

> /usr/lib/nagios/plugins/check_pressure --memory --full 10 2
pressure (Memory starvation) OK: some:0 full:0 microsecs/s | mem_some_avg10=0.00% mem_some_avg60=0.00% mem_some_avg300=0.00% mem_some_starvation/s=0 mem_full_avg10=0.00% mem_full_avg60=0.00% mem_full_avg300=0.00% mem_full_starvation/s=0 

Performance data

CPU

• cpu_avg10
• cpu_avg60
• cpu_avg300
• cpu_starvation/s

IO

• io_some_avg10
• io_some_avg60
• io_some_avg300
• io_some_starvation/s
• io_full_avg10
• io_full_avg60
• io_full_avg300
• io_full_starvation/s

MEMORY

• mem_some_avg10
• mem_some_avg60
• mem_some_avg300
• mem_some_starvation/s
• mem_full_avg10
• mem_full_avg60
• mem_full_avg300
• mem_full_starvation/s

Documentation

You can find detailed informations in the PSI - Pressure Stall Information page of the Linux Kernel Documentation site.