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4. ZenRender and Graphs

ZenRender provides access to RRD files (and rrdtool) stored on a remote collector from a user's browser, and allows this even with firewalls. Zenrender can implement rendering methods via PB and HTTP.

ZenHub maintains a connection from zenrender, so an HTTP request to ZenHub and back through to the remote zenrender is an option. zenrender can implement all the RenderServer methods via HTTP requests, too.

You can use the following default URLs to get a graph:

Default URL Description 
http://hostname:8080/zport/RenderServerThe Zope RenderServer (original mechanism)
http://zenoss:8090/collectorZenHub, where collector is the name of the collector defined in the model. This port number can only be changed by editing the Render hub service.
http://hostname:8091A direct reference to zenrender at the given hostname. The port number is configurable at each zenrender server.