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 <lm(a)mathias-kettner.de>
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",
+}