mirror of
https://github.com/munin-monitoring/contrib.git
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135 lines
4.0 KiB
Perl
Executable File
135 lines
4.0 KiB
Perl
Executable File
#!/usr/bin/perl -w
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#
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## Copyright (C) 2009 Gleb Voronich <http://stanly.net.ua/>
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##
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## This program is free software; you can redistribute it and/or
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## modify it under the terms of the GNU General Public License
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## as published by the Free Software Foundation; version 2 dated June,
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## 1991.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program; if not, write to the Free Software
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## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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##
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##
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## $Log$
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##
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## Based on Redis module code v0.08 2009/from http://svn.rot13.org/index.cgi/Redis
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##
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## Installation process:
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##
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## 1. Download the plugin to your plugins directory (e.g. /usr/share/munin/plugins)
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## 2. Create 3 symlinks at the directory that us used by munin for plugins detection (e.g. /etc/munin/plugins): redis_connected_clients, redis_per_sec and and redis_used_memory
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## 3. Edit plugin-conf.d/munin-node if it is needed (env.host and env.port variables are accepted)
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## 4. Restart munin-node service
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use strict;
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use IO::Socket::INET;
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use Switch;
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my $HOST = exists $ENV{'host'} ? $ENV{'host'} : "127.0.0.1";
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my $PORT = exists $ENV{'port'} ? $ENV{'port'} : 6379;
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my $server = "$HOST:$PORT";
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my $sock = IO::Socket::INET->new(
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PeerAddr => $server,
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Proto => 'tcp'
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);
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print $sock "INFO\r\n";
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my $result = <$sock> || die "can't read socket: $!";
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my $rep;
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read($sock, $rep, substr($result,1)) || die "can't read from socket: $!";
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my $hash;
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foreach (split(/\r\n/, $rep)) {
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my ($key,$val) = split(/:/, $_, 2);
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$hash->{$key} = $val;
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}
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close ($sock);
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my $config = ( defined $ARGV[0] and $ARGV[0] eq "config" );
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$0 =~ s/(.+)redis_//g;
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switch ($0) {
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case "connected_clients" {
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if ( $config ) {
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print "graph_title Connected clients\n";
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print "graph_vlabel Connected clients\n";
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print "connected_clients.label connected clients\n";
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print "graph_category redis\n";
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exit 0;
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}
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print "connected_clients.value " . $hash->{'connected_clients'} . "\n";
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}
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case "per_sec" {
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if ( $config ) {
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print "graph_title Per second\n";
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print "graph_vlabel per \${graph_period}\n";
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print "graph_category redis\n";
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print "requests.label requests\n";
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print "requests.type COUNTER\n";
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print "connections.label connections\n";
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print "connections.type COUNTER\n";
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exit 0;
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}
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print "requests.value ". $hash->{'total_commands_processed'} ."\n";
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print "connections.value ". $hash->{'total_connections_received'} ."\n";
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}
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case "used_memory" {
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if ( $config ) {
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print "graph_title Used memory\n";
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print "graph_vlabel Used memory\n";
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print "used_memory.label used memory\n";
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print "graph_category redis\n";
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exit 0;
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}
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print "used_memory.value ". $hash->{'used_memory'} ."\n";
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}
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case "used_keys" {
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my $dbs;
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foreach my $key (keys %{$hash}) {
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if ( $key =~ /^db\d+$/ && $hash->{$key} =~ /keys=(\d+),expires=(\d+)/ ) {
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$dbs->{$key} = [ $1, $2 ];
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}
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}
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if ( $config ) {
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print "graph_title Used keys\n";
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print "graph_vlabel Used keys\n";
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print "graph_category redis\n";
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foreach my $db (keys %{$dbs}) {
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printf "%s_keys.label %s keys\n", $db, $db;
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printf "%s_expires.label %s expires\n", $db, $db;
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}
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exit 0;
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}
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foreach my $db (keys %{$dbs}) {
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printf "%s_keys.value %d\n", $db, $dbs->{$db}[0];
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printf "%s_expires.value %d\n", $db, $dbs->{$db}[1];
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}
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}
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}
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# vim: ft=perl ai ts=4 sw=4 et:
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