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RabbitmqHA

Revision as of 15:52, 19 October 2010 by Armando (talk)
  • Launchpad Entry: NovaSpec:tbd
  • Created: 19 October 2010
  • Last updated: 19 October 2010
  • Contributors: Armando Migliaccio

Summary

This specification covers how Nova supports RabbitMQ configurations like clustering and active/passive replication.

Release Note

Austin release of Nova RPC mappings deals with intermittent network connectivity only. In order to support RabbitMQ clusters and active/passive brokers, more advanced Nova RPC mappings need to be provided, such as strategies to deal with failures of nodes holding queues within clusters and/or master/slave failover for active/passive replication.

Rationale

Currently Nova RPC implementation deals with intermittent network connectivity, i.e. if the connection between a RabbitMQ server and a Nova component (e.g. scheduler, API or compute) drops, the RabbitMQ client adapter tries to recover from it. On the other hand, RabbitMQ provides solutions like clustering and active/passive replication for a greater deal of scalability and reliability. If these

However, RabbitMQ clustering and active/passive replication may provide a greater deal of scalability and/or fault-tolerance, but support must be provided by the Nova RPC make sure that proper fail-over strategies are implemented

User stories

Assumptions

Design

Implementation

Code Changes

Code changes should include an overview of what needs to change, and in some cases even the specific details.