Red Hat Summit4장. Geo-replication
Geo-replication lets multiple geographically distributed Red Hat Quay deployments work as a single registry from the client perspective. This improves push and pull performance in globally distributed setups and provides transparent failover and redirect for clients.
Geo-replication is supported on standalone and Operator-based deployments.
4.1. Geo-replication features
Geo-replication features optimize image push and pull operations by routing pushes to the nearest storage backend and replicating data in the background to other locations. Pulls automatically use the closest available storage engine to maximize performance, with fallback to the source storage if replication is incomplete.
The following are the key features of geo-replication:
- When geo-replication is configured, container image pushes are written to the preferred storage engine for that Red Hat Quay instance. This is typically the nearest storage backend within the region.
- After the initial push, image data is replicated in the background to other storage engines.
- The list of replication locations is configurable and those can be different storage backends.
- An image pull always uses the closest available storage engine to maximize pull performance.
- If replication has not been completed yet, the pull uses the source storage backend instead.
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