Motivation

Set up deployments to allow us to specify blue/green and specific availability zones.

Instead of a monolithic install for fog-view components we break the install out into shared network components and the "stacks" that container the shard sets.

• fog-view-services - which contains the ingress and supporting routing objects. The ingress routing can be updated by modifying the color: selector label on the fog-view-service-router service object.
• fog-view-fsg - the fogShardGenerator object. This object will now be deployed as a blue/green set and statically tied to an Availability Zone so we can ensure balancing.

A common deployment will use these helm deployments.

fog-view-service  # Ingress and network objects

fog-view-fsg-bl-z1  # fogShardGenerator blue on zone 1
fog-view-fsg-bl-z2  # fogShardGenerator blue on zone 2
fog-view-fsg-bl-z3  # fogShardGenerator blue on zone 3

On an upgrade we will add a green set. Once the green set is loaded we can switch the selector labels on the fog-view-service-router service to start routing traffic.

fog-view-fsg-gr-z1  # fogShardGenerator green on zone 1
fog-view-fsg-gr-z2  # fogShardGenerator green on zone 2
fog-view-fsg-gr-z3  # fogShardGenerator green on zone 3

Future Work

• rework fog-ledger to use this deployment pattern