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b/docs/plankton.rst
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Plankton is the synnefo Image Registry Service. It is implemented as a very thin


  		





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layer on top of Pithos+; every Image on Plankton is a file on a Pithos+ backend,


  		





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with special metadata. At the frontend, Plankton implements the OpenStack Glance


  		





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API; at the backend it queries an existing Pithos+ backend. In the current


  		





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implementation the service runs Plankton and Pithos+ on a single, unified


  		





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backend: users may synchronize their Images, using the Pithos+ clients, then


  		





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register them with Plankton, with zero data movement. Then spaw new VMs from 


  		





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those images with Cyclades.


  		





  
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with special metadata. At the frontend, Plankton implements the OpenStack


  		





  
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Glance API; at the backend it queries an existing Pithos+ backend. In the


  		





  
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current implementation the service runs Plankton and Pithos+ on a single,


  		





  
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unified backend: users may synchronize their Images, using the Pithos+ clients,


  		





  
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then register them with Plankton, with zero data movement. Then spawn new VMs


  		





  
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from those images with Cyclades.


  		





  
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Let's see below:


  		





  
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.. image:: images/synnefo-clonepath.png


  		





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The figure shows a sailor bundling his physical machine with the


  		





  
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``snf-image-creator`` tool, uploading the file to pithos+, registering the file


  		





  
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as a new image with plankton and then spawning two new VMs with Cyclades from


  		





  
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this image.


  		





  
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The :ref:`Plankton API <plankton-api-guide>` is implemented inside Cyclades, so please consult the


  		





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:ref:`Cyclades Documentation <cyclades>` for more details.


  		





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