I’m trying to understand the differences or similarities between D-Compose and D-Swarm. By reading the documentation I have understood that docker-compose provides a mechanism to bind different containers together and work in collaboration, as a single service (I’m guessing it’s using the same func…

[image] shabirmean: What I’m trying to understand is has docker-swarm succeeded docker-compose and overlay networks is the new (recommended) way to connect containers? More or less. There is a Compose file format (3.0+) which is used to create docker stacks that consist of docker services wi…

Thank You Very Much. I’m trying to figure out whether there is a specific recommendation by the docker developers itself as to what needs to be used to connect containers that are closely related - compose or swarm overlay networks. The main dilemma I have is that the idea of connecting containers…

[image] shabirmean: I’m trying to figure out whether there is a specific recommendation by the docker developers itself as to what needs to be used to connect containers that are closely related - compose or swarm overlay networks. The Compose format can be used to create networks. Example de…

Do we have to explicitly connect them via networks in a compose file as you have shown??? Or does compose create a default overlay-network and connects the containers in the compose file if we mentioned nothing? Or are all containers in the compose file connected to each other via some other mech…

I think you must define networks explicitly unless you use links: (which creates networks behind the scenes, and is somewhat deprecated). [image] shabirmean: Or are all containers in the compose file connected to each other via some other mechanism (other than networked) to be able to call proc…

Okay. So if I understand right docker compose was created to define services using containers in a single file .yaml. This way you could also define networks to connect these containers together. Swarm is an extension to deploy services/containers in a distributed fashion in multiple nodes. It als…

Yes, pretty much correct. The most recent Compose functionality is built directly on top of swarm mode, which is a lower-level component and can be used directly via Docker CLI too, e.g., docker service create ....

Nathan so is Docker then basically recommending that going forward one should cease to use the Python’s docker-compose in favor of just using docker engine /docker stack that consist of docker services? It sort of sounds like if I’m following the more generic way to configure/run your system betwee…

@macedemo did you get an answer to that somewhere else? I’m wondering just like you and just like the author, when or why should I use D-Swarm and not D-Compose? All my nodes will probably will use a cloud server anyway, so why not running all the containers on the same server? Why will I want to …

When to use Docker-Compose and when to use Docker-Swarm

General

markvr (Markvr) March 2, 2017, 11:24am 2

My understanding is that Swarm overlay networks are now the way to connect containers. It’s made quite confusing because docker “stacks” use “compose” yaml files, and so it’s gets really confusing trying to work out what to put into the yaml compose file to get a swarm stack…

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When to use Docker-Compose and when to use Docker-Swarm

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