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service discovery apparently a thing

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Will Sargent 2016-10-12 12:28:09 -07:00
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@ -345,7 +345,7 @@ Note that if you're using [aufs](https://en.wikipedia.org/wiki/Aufs) as your fil
## Links
Links are how Docker containers talk to each other [through TCP/IP ports](https://docs.docker.com/engine/userguide/networking/default_network/dockerlinks/). [Linking into Redis](https://docs.docker.com/engine/examples/running_redis_service/) and [Atlassian](https://blogs.atlassian.com/2013/11/docker-all-the-things-at-atlassian-automation-and-wiring/) show worked examples. You can also (in 0.11) resolve [links by hostname](https://docs.docker.com/userguide/dockerlinks/#updating-the-etchosts-file).
Links are how Docker containers talk to each other [through TCP/IP ports](https://docs.docker.com/engine/userguide/networking/default_network/dockerlinks/). [Linking into Redis](https://docs.docker.com/engine/examples/running_redis_service/) and [Atlassian](https://blogs.atlassian.com/2013/11/docker-all-the-things-at-atlassian-automation-and-wiring/) show worked examples. You can also resolve [links by hostname](https://docs.docker.com/userguide/dockerlinks/#updating-the-etchosts-file).
NOTE: If you want containers to ONLY communicate with each other through links, start the docker daemon with `-icc=false` to disable inter process communication.
@ -372,7 +372,7 @@ And you can connect to it that way.
To delete links, use `docker rm --link`.
If you want to link across docker hosts then you should look at [Swarm](https://docs.docker.com/engine/swarm/). This [link on stackoverflow](https://stackoverflow.com/questions/21283517/how-to-link-docker-services-across-hosts) provides some good information on different patterns for linking containers across docker hosts.
Generally, linking between docker services is a subset of "service discovery", a big problem if you're planning to use Docker at scale in production. Please read [The Docker Ecosystem: Service Discovery and Distributed Configuration Stores](https://www.digitalocean.com/community/tutorials/the-docker-ecosystem-service-discovery-and-distributed-configuration-stores) for more info.
## Volumes