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root / snf-cyclades-app / synnefo / logic / backend_allocator.py @ d7841399

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# Date Author Comment
5dd9d123 11/02/2012 11:29 pm Christos Stavrakakis

Introduce per-user allocation of VMs to backends

Add BACKEND_PER_USER setting, a mapping from users to backends. This setting
can by used in order to bypass the default backend allocation process, and
allocate all the new VMs of a specific user to a specific Backend.

9cf4a3c0 10/03/2012 01:08 pm Christos Stavrakakis

Refresh backends in locked mode

f96f60fd 09/28/2012 03:32 pm Christos Stavrakakis

Move check for free IP to backend_allocator

Filter out the backends that do no have a free IP in BackendAllocator
instead of the default_allocator, in order to remove imports from
synnefo in the allocation strategy.

adc46059 09/28/2012 12:19 pm Christos Stavrakakis

Perform allocations in separate transactions

Add ForUpdateManager to the Backend model, in order to guarantee
exclusive order when allocating a VM.

Use manual transactions when allocating Backend and public IP for a new
VM, since these allocations need exclusive access (SELECT..FOR UPDATE)...

47d1d754 09/21/2012 11:23 am Christos Stavrakakis

Add some logging to backend allocator

7fede91e 09/07/2012 05:36 pm Christos Stavrakakis

Implement multiple public networks

Implement multiple public networks in order to support:
- different public networks per backend
- non-consecutive IP ranges in each backend

To support this, public networks are treated different from private
ones. Namely, they are correlated with one backend (and so have...

cc7c0f44 07/23/2012 11:33 am Christos Stavrakakis

Implement backend allocator and management command

New module implementing instance allocation to one of the available
backends. Allocation is performed based on memory and disk utilization.
Statistics for each backend are stored in DB and updated periodically....