- Repository
- Munin (master)
- Last change
- 2018-03-29
- Graph Categories
- Family
- manual
- Capabilities
- Language
- Perl
- License
- GPL-2.0-only
- Authors
tomcat_threads
Name
tomcat_threads - Plugin to monitor the number of tomcat-threads running on the machine, and (in addition to a simple process count), separate then into “busy” or “idle” servers.
Configuration
The following environment variables are used by this plugin:
url - Override default status-url
port - HTTP port number
user - Manager username
password - Manager password
connector - Override connector to monitor
Usage
Requirements: Needs access to http://<user>:<password>@localhost:8080/manager/status?XML=true (or modify the address for another host).
Tomcat 5.0 or higher.
A munin-user in $CATALINA_HOME/conf/tomcat-users.xml should be set up for this to work.
Tip: To see if it’s already set up correctly, just run this plugin with the parameter “autoconf”. If you get a “yes”, everything should work like a charm already.
tomcat-users.xml example: <user username=“munin” password="<set this>" roles=“standard,manager”/>
Author
Rune Nordbøe Skillingstad runesk@linpro.no
License
GPLv2
Magic Markers
#%# family=manual
#%# capabilities=autoconf
#!/usr/bin/perl
=head1 NAME
tomcat_threads - Plugin to monitor the number of tomcat-threads
running on the machine, and (in addition to a simple process count),
separate then into "busy" or "idle" servers.
=head1 CONFIGURATION
The following environment variables are used by this plugin:
url - Override default status-url
port - HTTP port number
user - Manager username
password - Manager password
connector - Override connector to monitor
=head1 USAGE
Requirements: Needs access to
http://<user>:<password>@localhost:8080/manager/status?XML=true (or
modify the address for another host).
Tomcat 5.0 or higher.
A munin-user in $CATALINA_HOME/conf/tomcat-users.xml should be set up
for this to work.
Tip: To see if it's already set up correctly, just run this plugin
with the parameter "autoconf". If you get a "yes", everything should
work like a charm already.
tomcat-users.xml example:
<user username="munin" password="<set this>" roles="standard,manager"/>
=head1 AUTHOR
Rune Nordbøe Skillingstad <runesk@linpro.no>
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=manual
#%# capabilities=autoconf
=cut
use strict;
use warnings;
use Munin::Plugin::HTTP;
use URI::Escape;
my $ret = undef;
if(!eval "require XML::Simple;") {
$ret .= "XML::Simple not found";
}
my $UA = Munin::Plugin::HTTP->new;
my $URL = exists $ENV{'url'} ? $ENV{'url'} : "http://%s:%s\@%s:%d/manager/status?XML=true";
my $PORT = exists $ENV{'port'} ? $ENV{'port'} : exists $ENV{'ports'} ? $ENV{'ports'} : 8080;
my $HOST = exists $ENV{'host'} ? $ENV{'host'} : "127.0.0.1";
my $USER = exists $ENV{'user'} ? $ENV{'user'} : "munin";
my $PASSWORD = exists $ENV{'password'} ? $ENV{'password'} : "munin";
my $TIMEOUT = exists $ENV{'timeout'} ? $ENV{'timeout'} : 30;
my $CONNECTOR= $ENV{'connector'};
my $url = sprintf $URL, uri_escape($USER), uri_escape($PASSWORD), $HOST, $PORT;
if(exists $ARGV[0] and $ARGV[0] eq "autoconf") {
if($ret) {
print "no ($ret)\n";
exit 0;
}
my $response = $UA->get($url);
if($response->is_success and $response->content =~ /<status>.*<\/status>/im) {
print "yes\n";
exit 0;
} else {
print "no (no tomcat status)\n";
exit 0;
}
}
my $ua = LWP::UserAgent->new(timeout => $TIMEOUT);
my $xs = new XML::Simple;
my $response = $ua->request(HTTP::Request->new('GET',$url));
my %options = ( KeyAttr => { connector => 'name' }, ForceArray => 1 );
my $xml = $xs->XMLin($response->content, %options);
my @connectors;
if(defined $CONNECTOR) {
push @connectors, $CONNECTOR;
} else {
@connectors = keys %{$xml->{'connector'}};
}
if(exists $ARGV[0] and $ARGV[0] eq "config") {
print "graph_title Tomcat threads\n";
print "graph_args --base 1000 -l 0\n";
print "graph_vlabel threads\n";
print "graph_category appserver\n";
print "graph_total total\n";
my @idle;
my @busy;
my $first = 1;
for my $connector (@connectors) {
my $clean = clean_fieldname($connector);
print "${clean}_busy.label $connector busy threads\n";
if($first) {
print "${clean}_busy.draw AREA\n";
$first = 0;
} else {
print "${clean}_busy.draw STACK\n";
}
print "${clean}_idle.label $connector idle threads\n";
print "${clean}_idle.draw STACK\n";
push @busy, "${clean}_busy";
push @idle, "${clean}_idle";
}
print "graph_order " . join(" ", @busy) . " " . join(" ", @idle) . "\n";
} else {
for my $connector (@connectors) {
my $clean = clean_fieldname($connector);
if(exists $xml->{'connector'}->{$connector}->{'threadInfo'}->[0]->{'currentThreadsBusy'} &&
exists $xml->{'connector'}->{$connector}->{'threadInfo'}->[0]->{'currentThreadCount'}) {
print "${clean}_busy.value " . $xml->{'connector'}->{$connector}->{'threadInfo'}->[0]->{'currentThreadsBusy'} . "\n";
print "${clean}_idle.value " .
($xml->{'connector'}->{$connector}->{'threadInfo'}->[0]->{'currentThreadCount'} -
$xml->{'connector'}->{$connector}->{'threadInfo'}->[0]->{'currentThreadsBusy'}) . "\n";
} else {
print "${clean}_busy.value U\n";
print "${clean}_idle.value U\n";
}
}
}