Current File : //lib64/nagios/plugins/nccustom/check_if_ips.py
#!/usr/libexec/platform-python
# version 2016/12/13
# writen by v.burov
# Requirements:
# you need to allow fillowing commands:
# "/bin/ping","ip","sed"
# Please pay attention that it's necessary to add access to sudoers file for /bin/ping if it is not SUID
import os, stat, re, sys, time, argparse
from subprocess import Popen, PIPE
ellist=''
redlist=''
PING = '/bin/ping'
SUDO = '/usr/bin/sudo'
def check_sudo_usable():
"""Checks that the SUDO program and path are correct and usable - that the program exists and is executable, otherwise exits with error."""
if not os.path.exists(SUDO):
end(UNKNOWN, "%s cannot be found" % SUDO)
elif not os.path.isfile(SUDO):
end(UNKNOWN, "%s is not a file" % SUDO)
elif not os.access(SUDO, os.X_OK):
end(UNKNOWN, "%s is not executable" % SUDO)
def get_server_ips():
# Python 2 version;
#ips = Popen("ip -4 -o a|sed -e '/inet 127\|inet 10\\.\|inet 172\|inet 192\\.168/d' -e 's/.*inet \(.*\)\/.*/\\1/'", stdout=PIPE, shell=True).stdout.read().split('\n')
ips = Popen("ip -4 -o a|sed -e '/inet 127\|inet 10\\.\|inet 100\\.100\\.0\\.\|inet 172\|inet 192\\.168/d' -e 's/.*inet \(.*\)\/.*/\\1/'", stdout=PIPE, shell=True).stdout.read().decode('UTF-8').split('\n')
return ips
def ping_to_float(s):
try:
return float(s)
except ValueError:
return 5000.1
def add_redlist(s):
global redlist
if redlist=='':
redlist='CRITICAL - '+s
else:
redlist+=', '+s
def add_ellist(s):
global ellist
if ellist=='':
ellist='Warning - '+s
else:
ellist+=', '+s
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("-v","--verbose", default=False, action="store_true", help="Extra output")
parser.add_argument("destination", nargs='?', default="nagios.web-hosting.com", help="Destination")
args = parser.parse_args()
ips=[]
ips=get_server_ips()
#print(ips)
pingoutputmatch=re.compile("icmp\S+=(\d+)\s+\S+\s+time=(\S+)\s+")
destination = args.destination
if args.verbose : print("Destination = {}".format(destination))
use_sudo = False
if not os.stat(PING).st_mode & stat.S_ISUID:
if args.verbose : print("/bin/ping is not SUID: have to use sudo")
check_sudo_usable()
use_sudo = True
running_procs={}
result={}
for s in ips:
if len(s) == 0:
continue
if use_sudo :
running_procs[s]=Popen([SUDO, PING,'-I', s, '-A','-n','-c','3','-W','1',destination], stdout=PIPE, stderr=PIPE)
else:
running_procs[s]=Popen([PING,'-I', s, '-A', '-n', '-c', '3', '-W', '1', destination], stdout=PIPE, stderr=PIPE)
result[s] = ['-','-','-']
i1=0
while running_procs :
i1+=1
if i1>1000 :
print("Script error: loop")
sys.exit(3)
for ip in running_procs.keys():
proc = running_procs[ip]
retcode = proc.poll()
if retcode is not None: # Process finished.
del running_procs[ip]
break
else: # No process is done, wait a bit and check again.
time.sleep(.1)
continue
retcode = proc.poll()
if retcode is None:
time.sleep(.1)
continue
i2=0
for output in iter(proc.stdout.readline,b'') :
p=pingoutputmatch.search(output.decode('UTF-8'))
if p:
result[ip][int(p.group(1))-1] = p.group(2)
if args.verbose : print("%{} seq={}s time={}s ms".format(ip, p.group(1), p.group(2)))
for ip in result.keys():
if args.verbose : print("ip+{}{}{} ".format(result[ip][0],result[ip][1],result[ip][2]))
if result[ip][0]=='-' and result[ip][1]=='-' and result[ip][2]=='-':
add_redlist(ip)
else:
p1=ping_to_float(result[ip][0])
p2=ping_to_float(result[ip][1])
p3=ping_to_float(result[ip][2])
if p1>400 and p2>400 and p3>400 :
add_redlist('%s(%s;%s;%s)' % (ip,result[ip][0],result[ip][1],result[ip][2]))
elif p1>200 and p2>200 and p3>200 :
add_ellist('%s(%s;%s;%s)' % (ip,result[ip][0],result[ip][1],result[ip][2]))
if len(redlist)>0 :
print("{}{}".format(redlist,ellist))
sys.exit(2)
if len(ellist)>0 :
print(ellist)
sys.exit(1)
print("OK")
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