#!/usr/bin/perl -w # -*- mode: cperl; mode: autopair -*- # Magic markers: #%# family=auto #%# capabilities=autoconf # nginx_connection request --- Determine the requests/connection # served by nginx. # Copyright (C) 2010 António P. P. Almeida # Author: António P. P. Almeida # 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. # Except as contained in this notice, the name(s) of the above copyright # holders shall not be used in advertising or otherwise to promote the sale, # use or other dealings in this Software without prior written authorization. # 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. =head1 NAME nginx_connection_request - Munin plugin to show number of requests/connection served by nginx. =encoding utf8 =head1 APPLICABLE SYSTEMS Any nginx host =head1 CONFIGURATION This shows the default configuration of this plugin. You can override the status URL and User Agent. [nginx*] env.url http://localhost/nginx_status env.ua nginx-status-verifier/0.1 Nginx must also be configured. Firstly the stub-status module must be compiled, and secondly it must be configured like this: server { listen 127.0.0.1; server_name localhost; location /nginx_status { stub_status on; access_log off; allow 127.0.0.1; deny all; } } =head1 MAGIC MARKERS #%# family=auto #%# capabilities=autoconf =head1 VERSION 1.1 =head1 BUGS None known =head1 AUTHOR António Almeida =head1 REPOSITORY Source code at http://github.com/perusio/nginx-munin =head1 LICENSE MIT =cut my $ret = undef; if (! eval "require LWP::UserAgent;") { $ret = "LWP::UserAgent not found"; } chomp(my $fqdn=`hostname -f`); ## Environment defined variables. ## The default URL is nginx_status if different set it in the environment. my $URL = exists $ENV{'url'} ? $ENV{'url'} : "http://$fqdn/nginx_status"; ## The default user agent is ngnix-status-verifier/0.1 if different ## set it in the environment. my $UA = exists $ENV{'ua'} ? $ENV{'ua'} : 'nginx-status-verifier/0.1'; ## Munin autoconf method. if (exists $ARGV[0] and $ARGV[0] eq "autoconf" ) { if ($ret) { print "no ($ret)\n"; exit 1; } my $ua = LWP::UserAgent->new(timeout => 30); # Set the UA to something different from the libwww-perl. # That UA is blocked. $ua->agent($UA); my $response = $ua->request(HTTP::Request->new('GET',$URL)); unless ($response->is_success and $response->content =~ /server/im) { print "no (no nginx status on $URL)\n"; exit 1; } else { print "yes\n"; exit 0; } } ## Munin config method. if (exists $ARGV[0] and $ARGV[0] eq "config") { print "graph_title nginx requests/connection handled\n"; print "graph_category webserver\n"; print "graph_vlabel Request/Connection\n"; print "connection_request.label requests/connection\n"; print "connection_request.min 0\n"; print "connection_request.draw LINE2\n"; exit 0; } my $ua = LWP::UserAgent->new(timeout => 30); # Set the UA to something different from the libwww-perl. # That UA is blocked. $ua->agent($UA); my $response = $ua->request(HTTP::Request->new('GET',$URL)); if ($response->content =~ /^\s+(\d+)\s+(\d+)\s+(\d+)/m) { printf("connection_request.value %.2f\n", $3/$2); } else { print "connection_request.value U\n"; }