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Update documentation for links

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Signed-off-by: Aanand Prasad <aanand.prasad@gmail.com>
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Aanand Prasad 2016-01-21 13:55:54 +00:00
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docs/networking.md
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@ -57,7 +57,18 @@ If any containers have connections open to the old container, they will be close
## Links
Docker links are a one-way, single-host communication system. They should now be considered deprecated, and as part of upgrading your app to the v2 format, you must remove any `links` sections from your `docker-compose.yml` and use service names (e.g. `web`, `db`) as the hostnames to connect to.
Links allow you to define extra aliases by which a service is reachable from another service. They are not required to enable services to communicate - by default, any service can reach any other service at that service's name. In the following example, `db` is reachable from `web` at the hostnames `db` and `database`:
version: 2
services:
web:
build: .
links:
- "db:database"
db:
image: postgres
See the [links reference](compose-file.md#links) for more information.
## Multi-host networking