diff --git a/docs/sources/userguide/dockerlinks.md b/docs/sources/userguide/dockerlinks.md index 20a5c1a179..91c6cb355b 100644 --- a/docs/sources/userguide/dockerlinks.md +++ b/docs/sources/userguide/dockerlinks.md @@ -149,16 +149,16 @@ Let's look at our linked containers using `docker ps`. $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES - 349169744e49 training/postgres:latest su postgres -c '/usr About a minute ago Up About a minute 5432/tcp db - aed84ee21bde training/webapp:latest python app.py 16 hours ago Up 2 minutes 0.0.0.0:49154->5000/tcp db/web,web + 349169744e49 training/postgres:latest su postgres -c '/usr About a minute ago Up About a minute 5432/tcp db, web/db + aed84ee21bde training/webapp:latest python app.py 16 hours ago Up 2 minutes 0.0.0.0:49154->5000/tcp web -We can see our named containers, `db` and `web`, and we can see that the `web` -containers also shows `db/web` in the `NAMES` column. This tells us that the +We can see our named containers, `db` and `web`, and we can see that the `db` +containers also shows `web/db` in the `NAMES` column. This tells us that the `web` container is linked to the `db` container in a parent/child relationship. So what does linking the containers do? Well we've discovered the link creates a parent-child relationship between the two containers. The parent container, -here `db`, can access information on the child container `web`. To do this +here `web`, can access information on the child container `db`. To do this Docker creates a secure tunnel between the containers without the need to expose any ports externally on the container. You'll note when we started the `db` container we did not use either of the `-P` or `-p` flags. As we're