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Prometheus integration for Zope/Plone.

Project description

This package publishes Plone statistics in a format that can be consumed by Prometheus.

It was largely based on munin.zope. See

It provides the following data:

  • The number of running Zope threads (if ZServer is available)
  • The number of Zope threads not in use (if ZServer is available)
  • The number of objects in the Zope cache
  • Memory used by the Zope cache
  • The number of objects that can be stored in the Zope cache
  • ZODB load count
  • ZODB store count
  • ZODB connections
  • Active Zope Objects
  • Total Zope Objects

Installation (using Buildout)

Add collective.prometheus to your instance eggs in buildout.cfg.


Assuming Plone listens on localhost:8000, start your Plone instance and visit http://localhost:8000/@@metrics to see the output and confirm that data is being reported.

If so, add a job to your scrape_configs in pometheus.yaml:

- job_name: 'plone'
  metrics_path: '/@@metrics'
  - targets: ['localhost:8000']


  • Fail gracefully when ZServer isn’t available


  • Fix a typo in output


  • Add documentation
  • Number Zope connections instead of using their ID


  • Add per connection caches active and total object counts


  • Initial release

Project details

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