November 2017
Intermediate to advanced
298 pages
7h 10m
English
Content preview from Deployment with Docker
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Docker communication ports
Unless you are running Docker Swarm, you will probably never need to worry about what ports Docker uses to communicate, but this is something that is relatively good to know as a point of reference should you ever encounter such configurations in the field or you want to have such deployments within your clusters. The list is pretty short, but each port is very important for the operation of most Swarm clusters:
2377 TCP - Used for Swarm node communication4789 UDP - Container ingress network7946 TCP/UDP - Container network discovery50 IP - Used for secure communication of overlay networks if you use "--opt encrypted" when creating the overlay network
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