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check_litespeed.py
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check_litespeed.py
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#!/usr/bin/env python
"""
Author: Tony Ling
Reads and parses LiteSpeed live statistics file /tmp/lshttpd/.rtreport.
All warnings are triggered if metric values are greater than thresholds
except for uptime and total requests which have no warning thresholds.
Example Usage:
python check_openlitespeed.py -t connections_utilized -W 80 -C 90
Created on: 11/21/14
"""
import sys
import argparse
def get_status_code(value, compare):
status_code = 3
if compare is None:
status_code = 0
elif compare == "greater":
if (args.critical and int(value) >= args.critical):
status_code = 2
elif (args.warning and int(value) >= args.warning):
status_code = 1
else:
status_code = 0
else:
if (args.critical and int(value) <= args.critical):
status_code = 2
elif (args.warning and int(value) <= args.warning):
status_code = 1
else:
status_code = 0
return status_code
def print_status(status, msg, value, metric):
if status is 2:
print "CRITICAL - " + msg + ": " + str(value) + "|" + metric + "=" + str(value)
elif status is 1:
print "WARNING - " + msg + ": " + str(value) + "|" + metric + "=" + str(value)
else:
print "OK - " + msg + ": " + str(value) + "|" + metric + "=" + str(value)
def handle_metric_utilization(conn, max_conn, msg, compare, metric):
value = float(conn)/float(max_conn)
print_status(get_status_code(value, compare), msg, value, metric)
def handle_metric(metric, value, msg, compare):
if metric == "UPTIME:":
time = value.split(":")
print_status(0, msg, (int(time[0])*3600)+(int(time[1])*60)+int(time[2]), metric)
else:
print_status(get_status_code(value, compare), msg, value, metric)
# metrics dict keys are script metric -t arguments
# key list values: element 0 = script output string, 1= metrics to parse for,
# 2 = greater than/less than/status for critical/warning values
metrics = {}
metrics['uptime'] = ['Server uptime in seconds', 'UPTIME:', None]
metrics['bytes_in'] = ['HTTP Bytes per second in', 'BPS_IN:', 'greater']
metrics['bytes_out'] = ['HTTP Bytes per second out', 'BPS_OUT:', 'greater']
metrics['https_bytes_in']= ['HTTPS Bytes per second in', 'SSL_BPS_IN:', 'greater']
metrics['https_bytes_out']= ['HTTPS Bytes per second out', 'SSL_BPS_OUT:', 'greater']
metrics['connections']= ['HTTP connections', 'PLAINCONN:', 'greater']
metrics['connections_utilized']= ['HTTP connections utilized(current/max)', None, 'greater']
metrics['idle_connections']= ['Idle HTTP connections', 'IDLECONN:', 'greater']
metrics['https_connections']= ['HTTPS connections', 'SSLCONN:', 'greater']
metrics['https_connections_utilized']= ['HTTPS connections utilized(current/max)', None, 'greater']
metrics['requests_processing']= ['Total requests processing', 'REQ_PROCESSING:', 'greater']
metrics['requests_per_second']= ['Total requests per second', 'REQ_PER_SEC:', 'greater']
metrics['total_requests']= ['Total requests', 'TOT_REQS:', None]
metrics['cache_hits_per_second']= ['Total cache hits per second', 'CACHE_HITS_PER_SEC:', 'greater']
metrics['total_cache_hits']= ['Total cache hits', 'TOTAL_CACHE_HITS:', None]
parser = argparse.ArgumentParser()
parser.add_argument('-W', '--warning', help='Warning threshold', default=None, type=float)
parser.add_argument('-C', '--critical', help='Critical theshold', default=None, type=float)
parser.add_argument('-t', '--metric', help='Metric to choose', default=None, required=True)
args = parser.parse_args()
# code starts here
status_code = 3
if (args.critical and args.critical < 0):
print "Error: -C Critical cannot be negative"
sys.exit(status_code)
elif (args.warning and args.warning < 0):
print "Error: -W Warning cannot be negative"
sys.exit(status_code)
try:
array_value = metrics[args.metric]
with open("/tmp/lshttpd/.rtreport") as file:
line = file.readline()
if "Server/Open" in line:
print("Error: Standard/Enterprise LiteSpeed version does not match, perhaps OpenLiteSpeed is installed instead")
sys.exit(status_code)
conn = ""
max_conn = ""
while line:
line = file.readline()
metrics = line.strip().split(",")
if "[]" not in metrics[0]:
for metric in metrics:
metric = metric.strip().split(" ")
if args.metric == "connections_utilized":
breakout = True
if metric[0] == "PLAINCONN:":
conn = metric[1]
elif metric[0] == "MAXCONN:":
max_conn = metric[1]
if conn != "" and max_conn != "":
status_code = handle_metric_utilization(conn, max_conn, array_value[0], array_value[2], "CONN_UTILIZED")
break
elif args.metric == "https_connections_utilized":
breakout = True
if metric[0] == "SSLCONN:":
conn = metric[1]
elif metric[0] == "MAXSSL_CONN:":
max_conn = metric[1]
if conn != "" and max_conn != "":
status_code = handle_metric_utilization(conn, max_conn, array_value[0], array_value[2], "SSLCONN_UTILIZED")
break
else:
if metric[0] == array_value[1]:
status_code = handle_metric(metric[0], metric[1], array_value[0], array_value[2])
line = ""
break
else:
for metric in metrics:
metric = metric.strip().split(" ")
if metric[-2] == array_value[1]:
status_code = handle_metric(metric[-2], metric[-1], array_value[0], array_value[2])
break
break
sys.exit(status_code)
except KeyError:
print "Error: Unrecognized/unsupported metric '{_metric}'".format(_metric=args.metric)
str_metrics = "Supported Metrics: ["
for metric in metrics:
str_metrics += ("'" + metric + "',")
print str_metrics[:-1] + "]"
sys.exit(status_code)