This plugin lets you get munin graphs with all Beanstalkd jobs counts.
Go to the latest release page, download phar-archive of into munin plugins directory.
For example (phar file URL might be different):
wget https://github.com/alexsoft/munin-beanstalk/releases/download/v1.0.0/munin-beanstalk.phar chmod a+x munin-beanstalk.phar sudo mv munin-beanstalk.phar /etc/munin/plugins/beanstalk
munin-node service and in 5 minutes you will get first counts.