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check_processes_by_ssh.py
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check_processes_by_ssh.py
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#!/usr/bin/env python
# Copyright (C) 2013:
# Gabes Jean, naparuba@gmail.com
# Pasche Sebastien, sebastien.pasche@leshop.ch
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
'''
This script is a check for lookup at memory consumption over ssh without
having an agent on the other side
'''
import os
import sys
import optparse
import base64
import subprocess
# Ok try to load our directory to load the plugin utils.
my_dir = os.path.dirname(__file__)
sys.path.insert(0, my_dir)
try:
import schecks
except ImportError:
print "ERROR : this plugin needs the local schecks.py lib. Please install it"
sys.exit(2)
VERSION = "0.1"
DEFAULT_WARNING = '100'
DEFAULT_CRITICAL = '200'
def get_processes(client):
# We are looking for a line like
#(nap,7320,3384,0.0) /bin/bash
# Beware of the export!
raw = r"""ps ax -o user,vsz,rss,pcpu,command --columns 10000 | sed -e 1d -e 's/ *\([^ ]*\) *\([^ ]*\) *\([^ ]*\) *\([^ ]*\) */(\1,\2,\3,\4) /'"""
stdin, stdout, stderr = client.exec_command('export LC_LANG=C && unset LANG && %s' % raw)
pss = []
for line in stdout:
line = line.strip()
# If the line is void, pass it
if not line:
continue
# We should get the (user,vsz,rss,pcpu) command format
# We remove the first ()
line = line[1:]
meta, cmd = line.split(')', 1)
#print cmd
# We should remove all kernel based process, we don't care about them
cmd = cmd.strip()
if cmd.startswith('['):
continue
user,vsz,rss,pcpu = meta.split(',')
vsz = int(vsz)
rss = int(rss)
pcpu = int(float(pcpu))
pss.append( (user, vsz, rss, pcpu, cmd) )
# Before return, close the client
client.close()
return pss
parser = optparse.OptionParser(
"%prog [options]", version="%prog " + VERSION)
parser.add_option('-H', '--hostname',
dest="hostname", help='Hostname to connect to')
parser.add_option('-p', '--port',
dest="port", type="int", default=22,
help='SSH port to connect to. Default : 22')
parser.add_option('-i', '--ssh-key',
dest="ssh_key_file",
help='SSH key file to use. By default will take ~/.ssh/id_rsa.')
parser.add_option('-u', '--user',
dest="user", help='remote use to use. By default shinken.')
parser.add_option('-P', '--passphrase',
dest="passphrase", help='SSH key passphrase. By default will use void')
parser.add_option('-w', '--warning',
dest="warning",
help='Warning value for RSS used memory. In MB. Default : 100')
parser.add_option('-c', '--critical',
dest="critical",
help='Critical value for RSS used memory. In MB. Must be superior to '
'warning value. Default : 200')
# Specific parameters
parser.add_option('-C', '--command',
dest="command", help='Command name to match for the check')
parser.add_option('-S', '--sum', action='store_true',
dest="sum_all", help='Sum all consomtion of matched processes for the check')
if __name__ == '__main__':
# Ok first job : parse args
opts, args = parser.parse_args()
if args:
parser.error("Does not accept any argument.")
port = opts.port
hostname = opts.hostname or ''
command = opts.command
# Look if we need to sum all value from the process match or not
sum_all = opts.sum_all
if sum_all and not command:
print "Error: the sum option is only valid with a -C option"
sys.exit(2)
ssh_key_file = opts.ssh_key_file or os.path.expanduser('~/.ssh/id_rsa')
user = opts.user or 'shinken'
passphrase = opts.passphrase or ''
# Try to get numeic warning/critical values
s_warning = opts.warning or DEFAULT_WARNING
s_critical = opts.critical or DEFAULT_CRITICAL
warning, critical = schecks.get_warn_crit(s_warning, s_critical)
# Ok now connect, and try to get values for memory
client = schecks.connect(hostname, port, ssh_key_file, passphrase, user)
pss = get_processes(client)
# Maybe we failed at getting data
if not pss:
print "Error : cannot fetch processes values from host"
sys.exit(2)
perfdata = ''
status = 0 # all is green until it is no more ok :)
bad_processes = []
global_sum = 0
for ps in pss:
(user, vsz, rss, pcpu, cmd) = ps
# Look if the cmd match out command filter
if command and command not in cmd:
continue
#perfdata += '"%s_used_pct"=%s%%;%s%%;%s%%;0%%;100%% "%s_used"=%s;%s;%s;0;%s ' % (mount, used_pct, warning, critical, mount, used, _size_warn, _size_crit, size)
# If we sum all, we will look at the comparision later
if sum_all:
global_sum += rss
continue
# And compare to limits
if rss >= critical*1024:
status = 2
bad_processes.append( (cmd, rss) )
continue
if rss >= warning*1024:
if status == 0:
status = 1
bad_processes.append( (cmd, rss) )
if not sum_all:
if status == 0:
print "Ok: all processes are in the limits | %s" % (perfdata)
sys.exit(0)
if status == 1:
print "Warning: some processes are not good : %s | %s" % (', '.join( ["%s:%dMB" % (cmd.split(' ')[0], float(rss)/1024) for (cmd, rss) in bad_processes]), perfdata)
sys.exit(1)
if status == 2:
print "Critical: some processes are not good : %s | %s" % (', '.join( ["%s:%dMB" % (cmd.split(' ')[0], float(rss)/1024) for (cmd, rss) in bad_processes]), perfdata)
sys.exit(2)
# Ok here we are in sum_all
perfdata = '"%s_consumtion"=%dMB' % (command, float(global_sum)/1024)
if global_sum >= critical*1024:
print 'Critical: the processes %s are too high %dMB | %s' % (command, float(global_sum)/1024, perfdata)
sys.exit(2)
if global_sum >= warning*1024:
print "Warning: the processes %s are too high %dMB | %s" % (command, float(global_sum)/1024, perfdata)
sys.exit(1)
print "OK: the processes %s are good %dMB | %s" % (command, float(global_sum)/1024, perfdata)
sys.exit(0)