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Component | Description |
MaxScale | Read/write splitting across all nodes in Galera, to write to only one node. |
MariaDB Galera | Synchronous multi-master main cluster for MariaDB. |
HAproxy | Balancing across all Redis instances, but only master main instance is active |
Redis | Stores volatile information such as tasks. |
Sentinel | Provides high availability for Redis. |
RabbitMQ | Queues for remote services. |
Zookeeper | Manages API leader selection (for more than one API server) |
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The cluster has a virtual IP (VIP) that will be active on one node at a time only. For access to Redis, Abiquo components (API and RS) will use the VIP. All HAproxy instances balance across all Redis instances, but only the master main instance is active.
RabbitMQ is a standard configuration that can be built as a cluster.
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