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Merge branch 'master' of https://github.com/docker/docker.github.io

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John Mulhausen 2016-11-28 15:00:23 -08:00
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29
engine/tutorials/dockerimages.md
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@ -559,6 +559,35 @@ Delete the `training/sinatra` image as you don't need it anymore.
> **Note:** To remove an image from the host, please make sure
> that there are no containers actively based on it.
## Check size of images and containers
An image is
[stored in layers](../userguide/storagedriver/imagesandcontainers.md),
shared with other images on the host, so the real disk usage depends on
how much layer overlap is happening between images on a host.
A container runs on
[a writable layer](../userguide/storagedriver/imagesandcontainers.md#/container-and-layers)
on top of a readonly rootfs.
Use `docker history` to see the size of image layers on your host:
$ docker history centos:centos7
IMAGE CREATED CREATED BY SIZE
970633036444 6 weeks ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0 B
<missing> 6 weeks ago /bin/sh -c #(nop) LABEL name=CentOS Base Imag 0 B
<missing> 6 weeks ago /bin/sh -c #(nop) ADD file:44ef4e10b27d8c464a 196.7 MB
<missing> 10 weeks ago /bin/sh -c #(nop) MAINTAINER https://github.c 0 B
Check the size of containers with `docker ps -s`:
$ docker ps -s
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES SIZE
cb7827c19ef7 docker-docs:is-11160-explain-image-container-size-prediction "hugo server --port=8" About a minute ago Up About a minute 0.0.0.0:8000->8000/tcp evil_hodgkin 0 B (virtual 949.2 MB)
# Next steps
Until now you've seen how to build individual applications inside Docker

4
swarm/install-manual.md
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@ -174,9 +174,9 @@ host as one of the Swarm managers.
2. From the output, copy the `eth0` IP address from `inet addr`.
3. Paste the launch command into the command line:
3. To set up a discovery backend, use the following command, replacing `<consul0_ip>` with the IP address from the previous command:
$ docker run -d -p 8500:8500 --name=consul progrium/consul -server -bootstrap
$ docker run -d -p 8500:8500 --name=consul progrium/consul -server -bootstrap -advertise=<consul0_ip>
4. Enter `docker ps`.