print ('Name: ', Juan['name'])
print ('Email: ', Juan['email'])
print ('Work: ', Juan['work'])
Name: Juan A. Cabrera Email: juan.cabrera@tu-dresden.de Work: Deutsche Telekom Chair of Communication Networks
Slides: http://comnets.bitbucket.org/docker-pbl-2016/lecture-1/
Press esc for a menu of the slides
Slides inspired and adapted from:
Docker by Example. By:
Ganesh & Hari {ganesh|hari}(at)codeops.tech
The easiest way is to use the script available here
To install it, run one of the following commands:
wget -qO- https://get.docker.com/ | sh
or
curl -sSL https://get.docker.com/ | sh
They will use a CLI tool to download the script ("wget" or "curl"), and then "| sh" will pipe it to shell
If none of those commands work, ask me for help
%%bash
docker -v
Docker version 1.12.2, build bb80604
%%bash
docker info
Containers: 8 Running: 4 Paused: 0 Stopped: 4 Images: 11 Server Version: 1.12.2 Storage Driver: devicemapper Pool Name: docker-8:2-7864838-pool Pool Blocksize: 65.54 kB Base Device Size: 10.74 GB Backing Filesystem: xfs Data file: /dev/loop0 Metadata file: /dev/loop1 Data Space Used: 2.541 GB Data Space Total: 107.4 GB Data Space Available: 104.8 GB Metadata Space Used: 3.482 MB Metadata Space Total: 2.147 GB Metadata Space Available: 2.144 GB Thin Pool Minimum Free Space: 10.74 GB Udev Sync Supported: true Deferred Removal Enabled: false Deferred Deletion Enabled: false Deferred Deleted Device Count: 0 Data loop file: /home/juarch/.docker/devicemapper/devicemapper/data Metadata loop file: /home/juarch/.docker/devicemapper/devicemapper/metadata Library Version: 1.02.135 (2016-09-26) Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: null bridge host overlay Swarm: active NodeID: 2gmf7ny80vdpdxyycfsy1h8ov Is Manager: true ClusterID: 37i93mguaohbuhz2wi2braua0 Managers: 1 Nodes: 2 Orchestration: Task History Retention Limit: 5 Raft: Snapshot Interval: 10000 Heartbeat Tick: 1 Election Tick: 3 Dispatcher: Heartbeat Period: 5 seconds CA Configuration: Expiry Duration: 3 months Node Address: 192.168.1.55 Runtimes: runc Default Runtime: runc Security Options: seccomp Kernel Version: 4.8.4-1-ARCH Operating System: Arch Linux OSType: linux Architecture: x86_64 CPUs: 4 Total Memory: 7.513 GiB Name: the_shire ID: AKUY:UC66:T5NP:ZAFR:YS6C:YW5O:N473:3U62:DUGN:LLDK:6NE5:D5OC Docker Root Dir: /home/juarch/.docker Debug Mode (client): false Debug Mode (server): false Registry: https://index.docker.io/v1/ Insecure Registries: 127.0.0.0/8
WARNING: Usage of loopback devices is strongly discouraged for production use. Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.
%%bash
docker run docker/whalesay cowsay Hello World
_____________
< Hello World >
-------------
\
\
\
## .
## ## ## ==
## ## ## ## ===
/""""""""""""""""___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\______/
%%bash
docker run hello-world
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker Hub account:
https://hub.docker.com
For more examples and ideas, visit:
https://docs.docker.com/engine/userguide/
%%bash
docker -h
Usage: docker [OPTIONS] COMMAND [arg...]
docker [ --help | -v | --version ]
A self-sufficient runtime for containers.
Options:
--config=~/.docker Location of client config files
-D, --debug Enable debug mode
-H, --host=[] Daemon socket(s) to connect to
-h, --help Print usage
-l, --log-level=info Set the logging level
--tls Use TLS; implied by --tlsverify
--tlscacert=~/.docker/ca.pem Trust certs signed only by this CA
--tlscert=~/.docker/cert.pem Path to TLS certificate file
--tlskey=~/.docker/key.pem Path to TLS key file
--tlsverify Use TLS and verify the remote
-v, --version Print version information and quit
Commands:
attach Attach to a running container
build Build an image from a Dockerfile
commit Create a new image from a container's changes
cp Copy files/folders between a container and the local filesystem
create Create a new container
diff Inspect changes on a container's filesystem
events Get real time events from the server
exec Run a command in a running container
export Export a container's filesystem as a tar archive
history Show the history of an image
images List images
import Import the contents from a tarball to create a filesystem image
info Display system-wide information
inspect Return low-level information on a container, image or task
kill Kill one or more running containers
load Load an image from a tar archive or STDIN
login Log in to a Docker registry.
logout Log out from a Docker registry.
logs Fetch the logs of a container
network Manage Docker networks
node Manage Docker Swarm nodes
pause Pause all processes within one or more containers
port List port mappings or a specific mapping for the container
ps List containers
pull Pull an image or a repository from a registry
push Push an image or a repository to a registry
rename Rename a container
restart Restart a container
rm Remove one or more containers
rmi Remove one or more images
run Run a command in a new container
save Save one or more images to a tar archive (streamed to STDOUT by default)
search Search the Docker Hub for images
service Manage Docker services
start Start one or more stopped containers
stats Display a live stream of container(s) resource usage statistics
stop Stop one or more running containers
swarm Manage Docker Swarm
tag Tag an image into a repository
top Display the running processes of a container
unpause Unpause all processes within one or more containers
update Update configuration of one or more containers
version Show the Docker version information
volume Manage Docker volumes
wait Block until a container stops, then print its exit code
Run 'docker COMMAND --help' for more information on a command.
%%bash
docker images
REPOSITORY TAG IMAGE ID CREATED SIZE nginx latest e43d811ce2f4 39 hours ago 181.4 MB dock0/arch latest 9b9558aeec5c 4 days ago 573.6 MB alpine latest baa5d63471ea 4 days ago 4.799 MB nginx <none> a5311a310510 10 days ago 181.4 MB datadog/docker-dd-agent latest f385e05e1883 6 weeks ago 301.8 MB node 5-slim c7a1798865e7 7 weeks ago 207.5 MB ubuntu latest bd3d4369aebc 8 weeks ago 126.6 MB hello-world latest c54a2cc56cbb 3 months ago 1.848 kB gophernet/mz latest 71fa98ad2324 6 months ago 126.3 MB networkstatic/iperf3 latest 6ea158fee1a7 7 months ago 125.5 MB docker/whalesay latest 6b362a9f73eb 17 months ago 247 MB
%%bash
docker search arch
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
%%bash
docker pull dock0/arch
Using default tag: latest latest: Pulling from dock0/arch 61a89ad7e283: Pulling fs layer 661b4793c245: Pulling fs layer 118193de9837: Pulling fs layer ed763a71c2c2: Pulling fs layer 9958aa3aeac5: Pulling fs layer e90db6f659ec: Pulling fs layer ed763a71c2c2: Waiting 9958aa3aeac5: Waiting e90db6f659ec: Waiting 61a89ad7e283: Verifying Checksum 61a89ad7e283: Download complete 61a89ad7e283: Pull complete 661b4793c245: Pull complete 118193de9837: Verifying Checksum 118193de9837: Pull complete ed763a71c2c2: Verifying Checksum ed763a71c2c2: Download complete ed763a71c2c2: Pull complete e90db6f659ec: Download complete 9958aa3aeac5: Download complete 9958aa3aeac5: Pull complete e90db6f659ec: Pull complete Digest: sha256:81ccc265c4bfafbf8fade70702c17c51f7831326b0efd8b240215ce7d0b2f5ee Status: Downloaded newer image for dock0/arch:latest
from IPython.core.display import HTML
HTML('<a href="https://hub.docker.com/">Docker Hub</a>')
%%bash
docker images
REPOSITORY TAG IMAGE ID CREATED SIZE dock0/arch latest 9fd5c23f509f About an hour ago 575.5 MB nginx latest e43d811ce2f4 39 hours ago 181.4 MB dock0/arch <none> 9b9558aeec5c 4 days ago 573.6 MB alpine latest baa5d63471ea 4 days ago 4.799 MB nginx <none> a5311a310510 10 days ago 181.4 MB datadog/docker-dd-agent latest f385e05e1883 6 weeks ago 301.8 MB node 5-slim c7a1798865e7 7 weeks ago 207.5 MB ubuntu latest bd3d4369aebc 8 weeks ago 126.6 MB hello-world latest c54a2cc56cbb 3 months ago 1.848 kB gophernet/mz latest 71fa98ad2324 6 months ago 126.3 MB networkstatic/iperf3 latest 6ea158fee1a7 7 months ago 125.5 MB docker/whalesay latest 6b362a9f73eb 17 months ago 247 MB
%%bash
docker inspect alpine
[
{
"Id": "sha256:baa5d63471ead618ff91ddfacf1e2c81bf0612bfeb1daf00eb0843a41fbfade3",
"RepoTags": [
"alpine:latest"
],
"RepoDigests": [
"alpine@sha256:1354db23ff5478120c980eca1611a51c9f2b88b61f24283ee8200bf9a54f2e5c"
],
"Parent": "",
"Comment": "",
"Created": "2016-10-18T20:31:22.321427771Z",
"Container": "1d811a9194c47475510bc53700001c32f2b0eb8e3aca0914c5424109c0cd2056",
"ContainerConfig": {
"Hostname": "1d811a9194c4",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
],
"Cmd": [
"/bin/sh",
"-c",
"#(nop) ADD file:7afbc23fda8b0b3872623c16af8e3490b2cee951aed14b3794389c2f946cc8c7 in / "
],
"Image": "",
"Volumes": null,
"WorkingDir": "",
"Entrypoint": null,
"OnBuild": null,
"Labels": null
},
"DockerVersion": "1.12.1",
"Author": "",
"Config": {
"Hostname": "1d811a9194c4",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
],
"Cmd": null,
"Image": "",
"Volumes": null,
"WorkingDir": "",
"Entrypoint": null,
"OnBuild": null,
"Labels": null
},
"Architecture": "amd64",
"Os": "linux",
"Size": 4799225,
"VirtualSize": 4799225,
"GraphDriver": {
"Name": "devicemapper",
"Data": {
"DeviceId": "586",
"DeviceName": "docker-8:2-7864838-4c329d72fcb914fb04aca59f7987f36f640fbab7837ad22187eaed6047ff5a5e",
"DeviceSize": "10737418240"
}
},
"RootFS": {
"Type": "layers",
"Layers": [
"sha256:011b303988d241a4ae28a6b82b0d8262751ef02910f0ae2265cb637504b72e36"
]
}
}
]
%%bash
docker history nginx
IMAGE CREATED CREATED BY SIZE COMMENT e43d811ce2f4 39 hours ago /bin/sh -c #(nop) CMD ["nginx" "-g" "daemon 0 B <missing> 39 hours ago /bin/sh -c #(nop) EXPOSE 443/tcp 80/tcp 0 B <missing> 39 hours ago /bin/sh -c ln -sf /dev/stdout /var/log/nginx/ 0 B <missing> 39 hours ago /bin/sh -c apt-key adv --keyserver hkp://pgp. 58.43 MB <missing> 39 hours ago /bin/sh -c #(nop) ENV NGINX_VERSION=1.11.5-1 0 B <missing> 39 hours ago /bin/sh -c #(nop) MAINTAINER NGINX Docker Ma 0 B <missing> 45 hours ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0 B <missing> 45 hours ago /bin/sh -c #(nop) ADD file:23aa4f893e3288698c 123 MB
docker rmi <image-tag>
We create a container using docker run
specifically:
docker run OPTIONS <<image-tag>> CMD ARGS
docker run alpine ping 8.8.8.8
docker run -t -i ubuntu /bin/bash
-t Attach a pseudo-tty console
-i Stands for Interactive
docker run -d ubuntu /bin/sh -c "while true; do echo current date and time is: $(date); sleep 2 ; done"-d stands for detach
docker logs <Container-Tag>
Was it one-command easy?
from IPython.display import IFrame
IFrame('https://en.wikipedia.org/wiki/Comparison_of_web_server_software#Overview', width=700, height=350)
%%bash
docker search nginx
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker run -d -p 80:80 nginx
-d stands for detach
-p stands for port. We basically say: "Redirect every incomming TCP packet at port 80 of the host, to the port 80 of the container"
docker run debian /bin/sh