[checkmk-commits] 5952 docker_container_cpu: Check the CPU utilization of a docker container

Module: check_mk Branch: master Commit: 1c95803af1a7c394c3d396daafcdd7a99b5f54d5 URL: http://git.mathias-kettner.de/git/?p=check_mk.git;a=commit;h=1c95803af1a7c3… Author: Lars Michelsen &lt;lm(a)mathias-kettner.de&gt; Date: Fri Apr 6 14:35:40 2018 +0200 5952 docker_container_cpu: Check the CPU utilization of a docker container This check reports the percentage CPU utilization of a docker container. Unlike the Linux CPU utilization check (kernel.util) it does only report user and system time. More detailed values, like iowait, are not available. Change-Id: I108c36a7609792b9c94abc1e9de7d4c3909b4395 --- .werks/5952 | 12 +++++++++++ agents/check_mk_agent.linux | 3 +++ checkman/docker_container_cpu | 14 ++++++++++++ checks/docker_container_cpu | 50 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 79 insertions(+) diff --git a/.werks/5952 b/.werks/5952 new file mode 100644 index 0000000..ffb1f98 --- /dev/null +++ b/.werks/5952 @@ -0,0 +1,12 @@ +Title: docker_container_cpu: Check the CPU utilization of a docker container +Level: 1 +Component: checks +Compatible: compat +Edition: cre +Version: 1.5.0i4 +Date: 1523018035 +Class: feature + +This check reports the percentage CPU utilization of a docker container. +Unlike the Linux CPU utilization check (kernel.util) it does only report +user and system time. More detailed values, like iowait, are not available. diff --git a/agents/check_mk_agent.linux b/agents/check_mk_agent.linux index cc437c2..15d3f6e 100755 --- a/agents/check_mk_agent.linux +++ b/agents/check_mk_agent.linux @@ -128,6 +128,9 @@ function section_cpu() CPU_REGEX='^CPU|^processor' fi echo "$(cat /proc/loadavg) $(grep -c -E $CPU_REGEX < /proc/cpuinfo)" + else + echo '<<<docker_container_cpu>>>' + echo "$(</sys/fs/cgroup/cpu/cpuacct.stat)" fi } diff --git a/checkman/docker_container_cpu b/checkman/docker_container_cpu new file mode 100644 index 0000000..c673a2c --- /dev/null +++ b/checkman/docker_container_cpu @@ -0,0 +1,14 @@ +title: CPU utilization +agents: linux +catalog: app/docker +license: GPL +distribution: check_mk +description: + This check measures the CPU utilization of a docker container during + the last check cycle. Levels can be set on the total utilization. + + This check can currently report user and system time. + +inventory: + One check per container is created if the Check_MK agent is executed + in the context of a docker container. diff --git a/checks/docker_container_cpu b/checks/docker_container_cpu new file mode 100644 index 0000000..bef4b4c --- /dev/null +++ b/checks/docker_container_cpu @@ -0,0 +1,50 @@ +#!/usr/bin/env python +# -*- encoding: utf-8; py-indent-offset: 4 -*- +# +------------------------------------------------------------------+ +# | ____ _ _ __ __ _ __ | +# | / ___| |__ ___ ___| | __ | \/ | |/ / | +# | | | | '_ \ / _ \/ __| |/ / | |\/| | ' / | +# | | |___| | | | __/ (__| < | | | | . \ | +# | \____|_| |_|\___|\___|_|\_\___|_| |_|_|\_\ | +# | | +# | Copyright Mathias Kettner 2014 mk(a)mathias-kettner.de | +# +------------------------------------------------------------------+ +# +# This file is part of Check_MK. +# The official homepage is at http://mathias-kettner.de/check_mk. +# +# check_mk is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation in version 2. check_mk is distributed +# in the hope that it will be useful, but WITHOUT ANY WARRANTY; with- +# out even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. See the GNU General Public License for more de- +# tails. You should have received a copy of the GNU General Public +# License along with GNU Make; see the file COPYING. If not, write +# to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, +# Boston, MA 02110-1301 USA. + +def inventory_docker_container_cpu(info): + if info: + return [(None, {})] + + +def check_docker_container_cpu(_no_item, params, info): + if not params: + params = {} + + # user, nice, system, idle, iowait, hw-int, sw-int, steal + ticks = dict(info) + values = [ int(ticks["user"]), 0, int(ticks["system"]), 0, 0, 0, 0, 0 ] + + return check_cpu_util_unix(values, params) + + +check_info["docker_container_cpu"] = { + "check_function": check_docker_container_cpu, + "inventory_function": inventory_docker_container_cpu, + "service_description": "CPU utilization", + "has_perfdata": True, + "includes": ["cpu_util.include"], + "group": "cpu_iowait", +}