mirror of
https://github.com/munin-monitoring/contrib.git
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77 lines
2.3 KiB
Perl
Executable File
77 lines
2.3 KiB
Perl
Executable File
#!/usr/bin/env perl
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# ex:ts=4
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# Copyright © Nicolas BOUTHORS / Smile <nicolas.bouthors@smile.fr>
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#
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# Licence GPLv2
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#
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# Based on a script distributed on munin-exchange.
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use strict;
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use warnings;
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use Cache::Memcached;
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my %instances = ();
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# Will look into /etc for memcached config files and extract TCP listening port
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# from the config file.
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sub fetch_instances() {
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my @files = glob("/etc/memcached_*.conf");
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undef $/;
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for my $f (@files) {
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$f =~ m/.*memcached_(.*)\.conf/;
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my $instance_name = $1;
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open(CONF, $f);
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my $confdata = <CONF>;
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close(CONF);
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if ($confdata =~ m/-p ([0-9]+)/m) {
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$instances{$instance_name}{'port'} = $1;
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}
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}
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}
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fetch_instances();
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my $cmd = shift || '';
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if ($cmd eq 'config') {
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print "graph_title Memcached bytes used for all instances\n";
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print "graph_args --base 1024 -l 0\n";
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print "graph_vlabel bytes\n";
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print "graph_category memory\n";
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print "graph_info This graph monitors the size of the memcached cache for every instance.\n";
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foreach my $instance_name (keys(%instances)) {
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my $pretty_name = $instance_name;
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$pretty_name =~ s/[^a-zA-Z0-9]/_/g;
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print "${pretty_name}_bytes.label $instance_name used\n";
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print "${pretty_name}_bytes.info Number of bytes currently used\n";
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print "${pretty_name}_bytes.min 0\n";
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print "${pretty_name}_bytes.draw LINE2\n";
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print "${pretty_name}_maxbytes.label $instance_name maximum\n";
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print "${pretty_name}_maxbytes.info The configured cache size\n";
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print "${pretty_name}_maxbytes.min 0\n";
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}
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exit 0;
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}
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foreach my $instance_name (keys(%instances)) {
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my $ip = "127.0.0.1";
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my $port = $instances{$instance_name}{'port'};
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my $pretty_name = $instance_name;
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$pretty_name =~ s/[^a-zA-Z0-9]/_/g;
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my $address = "$ip:$port";
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my $memd = new Cache::Memcached { 'servers' => [$address] };
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my $memstats = $memd->stats(['misc']);
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print "${pretty_name}_bytes.value " . $memstats->{hosts}->{$address}->{misc}->{bytes} . "\n";
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print "${pretty_name}_maxbytes.value " .
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$memstats->{hosts}->{$address}->{misc}->{limit_maxbytes} . "\n";
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}
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