November 2017
Intermediate to advanced
298 pages
7h 10m
English
Content preview from Deployment with Docker
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Overlay networks
We only briefly touched on this in Chapter 4, Scaling the Containers, but in order to get our containers to work with the Swarm service discovery, we had to create this type of network though we didn't really spend much time explaining what it is. In the context of Docker Swarm, containers on one machine cannot reach containers on a different machine as their networks are routed directly to the next hop as they traverse the network and a bridge network prevents each container from reaching its neighbor on the same node. To hook all of the containers together in this multi-host setup seamlessly, you can create an overlay network that spans any Swarm nodes that are part of the cluster. Sadly, this type of network is only available ...
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