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cyclades: Consider IPv6 only networks in allocator
Backend allocator excludes backends that do not have a free IPv4address. Since, from now on, not all instances are connected to a publicnetwork, this check is only needed when 'SNF:ANY_PUBIC' network is used.
cyclades: Fix bug in allocating archipelago VMs
This commit fixes a bug that caused backend allocator to sendarchipelago VMs backends to backends not in ARCHIPELAGO_BACKENDSsetting. The flavor disk template is parsed before the backendallocation, so the disk_template at this point is ext and not ext_vlmc,...
Rename ARCHIPELAGOS to ARCHIPELAGO
Rename ARCHIPELAGOS_BACKENDS setting to ARCHIPELAGO_BACKEND.
Add warning message for backend without networks
Temporary fix for allocating archipelagos VMs
Introduce per-user allocation of VMs to backends
Add BACKEND_PER_USER setting, a mapping from users to backends. This settingcan by used in order to bypass the default backend allocation process, andallocate all the new VMs of a specific user to a specific Backend.
Refresh backends in locked mode
Move check for free IP to backend_allocator
Filter out the backends that do no have a free IP in BackendAllocatorinstead of the default_allocator, in order to remove imports fromsynnefo in the allocation strategy.
Perform allocations in separate transactions
Add ForUpdateManager to the Backend model, in order to guaranteeexclusive order when allocating a VM.
Use manual transactions when allocating Backend and public IP for a newVM, since these allocations need exclusive access (SELECT..FOR UPDATE)...
Add some logging to backend allocator
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 privateones. Namely, they are correlated with one backend (and so have...
Implement backend allocator and management command
New module implementing instance allocation to one of the availablebackends. Allocation is performed based on memory and disk utilization.Statistics for each backend are stored in DB and updated periodically....