[checkmk-commits] Check_MK Git: check_mk: #1451 users: new check to monitor number of users logged in on a linux system

Module: check_mk Branch: master Commit: ae3f4495d7ffcc1458918603db8202bed5df51b1 URL: http://git.mathias-kettner.de/git/?p=check_mk.git;a=commit;h=ae3f4495d7ffcc… Author: Goetz Golla &lt;gg(a)mathias-kettner.de&gt; Date: Wed Dec 3 18:20:13 2014 +0100 #1451 users: new check to monitor number of users logged in on a linux system This check currently needs the mk_users agent plugin installed in the monitoring client. The agent section may at some later point be moved into check_mk_agent.linux --- .werks/1451 | 11 +++++++ ChangeLog | 3 +- agents/plugins/mk_users | 29 +++++++++++++++++ checkman/users | 24 ++++++++++++++ checks/users | 59 ++++++++++++++++++++++++++++++++++ web/plugins/wato/check_parameters.py | 12 +++++++ 6 files changed, 137 insertions(+), 1 deletion(-) diff --git a/.werks/1451 b/.werks/1451 new file mode 100644 index 0000000..08f7427 --- /dev/null +++ b/.werks/1451 @@ -0,0 +1,11 @@ +Title: users: new check to monitor number of users logged in on a linux system +Level: 2 +Component: checks +Compatible: compat +Version: 1.2.5i7 +Date: 1417627059 +Class: feature + +This check currently needs the mk_users agent plugin installed in the monitoring client. +The agent section may at some later point be moved into check_mk_agent.linux + diff --git a/ChangeLog b/ChangeLog index 17f057c..b03f1b0 100644 --- a/ChangeLog +++ b/ChangeLog @@ -35,9 +35,10 @@ * 1565 mem.win: set default levels for page file to 80%/90% * 1608 zpool_status: Add an overall state check (thx to Craig Cook)... * 1567 postfix_mailq: speedup in Linux agent for large mail queues... - * 1450 checkpoint_connections, checkpoint_packets: new checks to monitor Checkpoint firewalls * 1611 mssql.vbs: Supporting SQL-Server 2014 now * 1568 f5_bigip_cluster_v11: new check for F5 cluster status for firmware version 11 + * 1450 checkpoint_connections, checkpoint_packets: new checks to monitor Checkpoint firewalls + * 1451 users: new check to monitor number of users logged in on a linux system... * 1478 FIX: kernel.util, statgrab_cpu: fix computation of utilization... * 1480 FIX: brocade_vdx_status: disable check on some devices that do not support it... * 1485 FIX: dell_om_disks, dell_om_esmlog, dell_om_mem, dell_om_processors, dell_om_sensors: detect more devices... diff --git a/agents/plugins/mk_users b/agents/plugins/mk_users new file mode 100755 index 0000000..7058b96 --- /dev/null +++ b/agents/plugins/mk_users @@ -0,0 +1,29 @@ +#!/bin/bash +# +------------------------------------------------------------------+ +# | ____ _ _ __ __ _ __ | +# | / ___| |__ ___ ___| | __ | \/ | |/ / | +# | | | | '_ \ / _ \/ __| |/ / | |\/| | ' / | +# | | |___| | | | __/ (__| < | | | | . \ | +# | \____|_| |_|\___|\___|_|\_\___|_| |_|_|\_\ | +# | | +# | 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- +# ails. 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. + +if type who >/dev/null; then + echo "<<<users>>>" + who | wc -l +fi diff --git a/checkman/users b/checkman/users new file mode 100644 index 0000000..c3ebbce --- /dev/null +++ b/checkman/users @@ -0,0 +1,24 @@ +title: Number of Users Currently Logged In +agents: linux +catalog: os/misc +license: GPL +distribution: check_mk +description: + Monitor the number of users currently logged in. + The default levels are set to {20} and {30}. + +inventory: + A check of this type is created automatically on each Linux host as soon + as the mk_users plugin is installed on the host. + +perfdata: + On variable: the current number of users logged in + +[parameters] +warn (int): Number of users logged in at which a warning level + is triggered +crit (int): Number for a critical state + +[configuration] +users_default_levels (int, int): Levels used for all checks found + by inventory. This variable is preset to {(20, 30)}. diff --git a/checks/users b/checks/users new file mode 100644 index 0000000..71287de --- /dev/null +++ b/checks/users @@ -0,0 +1,59 @@ +#!/usr/bin/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- +# ails. 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. + + +# Example output from agent: +# <<<user>>> +# 3 + +users_default_levels = (20,30) + +def inventory_users(info): + if info: + return [ (None, "users_default_levels") ] + +def check_users(_no_item, params, info): + if info: + users = int(info[0][0]) + warn, crit = params + state = 0 + if users >= crit: + state = 2 + elif users >= warn: + state = 1 + + infotext = "%d users logged in, levels at %d/%d" % ( users, warn, crit ) + perfdata = [ ( "users", users, warn, crit, 0 ) ] + yield state, infotext, perfdata + + +check_info["users"] = { + 'check_function' : check_users, + 'inventory_function' : inventory_users, + 'service_description' : 'Users', + 'has_perfdata' : True, + 'group' : 'users', +} diff --git a/web/plugins/wato/check_parameters.py b/web/plugins/wato/check_parameters.py index 781df59..45be91a 100644 --- a/web/plugins/wato/check_parameters.py +++ b/web/plugins/wato/check_parameters.py @@ -4238,6 +4238,18 @@ register_check_parameters( ) register_check_parameters( + subgroup_os, + "users", + _("Number of Users Logged In"), + Tuple( + help = _("This rule defines levels for the number of users logged in on a system."), + elements = [ + Integer(title = _("Warning if above"), unit = _("users"), default_value = 20), + Integer(title = _("Critical if above"), unit = _("users"), default_value = 30)]), + None, None +) + +register_check_parameters( subgroup_applications, "vms_procs", _("Number of processes on OpenVMS"),