Munin contributed plugins

#!/usr/bin/env python

# -*- coding: utf-8 -*-

# vim: set fileencoding=utf-8

#

# Munin plugin to monitor lighttpd web-server.

#

# Copyright Igor Borodikhin

#

# License : GPLv3

#

# Configuration parameters:

# env.status_url - url of lighty's server-status (optional, default is http://127.0.0.1/server-status)

# env.username - username to provide if status_url requires basic authentication (optional, default - no authentication)

# env.password - password to provide if status_url requires basic authentication (optional, default - no authentication)

#

# Note: If basic HTTP authentication is required you should specify both username and password.

#

# ## Installation

# Copy file to directory /usr/share/munin/plugins/

# Because this plugin has suggest capability the last step is to run

#     # munin-node-configure --suggest --shell | sh -x

#

#%# family=contrib

#%# capabilities=autoconf suggest

import os, sys, urllib2, base64

program = sys.argv[0]

graph_type = program[program.rfind("_")+1:]

graph_types = {

    "accesses" : [

        {

            "title" : "Total accesses",

            "type" : "COUNTER",

            "args" : "--base 1000 -l 0",

            "fields" : ["accesses"]

        }

    ],

    "kbytes" : [

        {

            "title" : "Total kBytes",

            "type" : "COUNTER",

            "args" : "--base 1024 -l 0",

            "fields" : ["kbytes"]

        }

    ],

    "uptime" : [

        {

            "title" : "Uptime",

            "type" : "GAUGE",

            "args" : "--base 1000 -l 0",

            "fields" : ["uptime"]

        }

    ],

    "status" : [

        {

            "title" : "Status",

            "type" : "GAUGE",

            "args" : "--base 1000 -l 0",

            "fields" : ["busy", "idle"]

        }

    ]

}

if len(sys.argv) == 2 and sys.argv[1] == "autoconf":

    print "yes"

elif len(sys.argv) == 2 and sys.argv[1] == "config":

    if graph_type not in graph_types.keys():

        raise Exception("Unknown graph type '%s'"%graph_type)

    params = graph_types[graph_type]

    for item in params:

        print "graph_title %s" % item["title"]

        print "graph_category lighttpd"

        for field in item["fields"]:

            print "%s.label %s" % (field, field)

            print "%s.type %s" % (field, item["type"])

        print "graph_args %s" % item["args"]

elif len(sys.argv) == 2 and sys.argv[1] == "suggest":

    for item in graph_types.keys():

        print item

else:

    if "status-url" not in os.environ:

        status_url = "http://127.0.0.1/server-status"

    else:

        status_url = os.environ["status_url"]

    request = urllib2.Request("%s?auto" % status_url)

    if "username" in os.environ and "password" in os.environ:

        base64str = base64.encodestring("%s:%s" % (os.environ["username"], os.environ["password"])).replace("\r", "")

        request.add_header("Authorization", "Basic %s" % base64str)

    info = urllib2.urlopen(request).read()

    data = {}

    lines = info.split("\n")

    for line in lines:

        try:

           (title, value) = line.split(": ")

           data[title] = value

        except Exception:

           pass

    if graph_type == "accesses":

        print "accesses.value %s" % data["Total Accesses"]

    elif graph_type == "kbytes":

        print "kbytes.value %s" % data["Total kBytes"]

    elif graph_type == "uptime":

        print "uptime.value %s" % str(float(data["Uptime"])/86400)

    elif graph_type == "status":

        print "busy.value %s" % data["BusyServers"]

        print "idle.value %s" % data["IdleServers"]