Dockerize EverythingThomas Einwaller, troii Software

@tompson

products

products technologies

2008

2008

2013

Number of Processes

~$ ps ax | wc -l 283

~$ docker run ubuntu ps axPID TTY STAT TIME COMMAND 1 ? Rs 0:00 ps ax

code

runtime

libraries

OS

container

what is in a container?

image layers

ubuntu

nginx java

tomcat

App A App B

wordpress website X

“inheritance”

one process per container

tomcat mysql

war, .properties

link

container A container B

immutable

ship the whole environment

DevOps

How to get started?

Docker Toolbox

Search and Run an Image

~$ docker search -s 10 wordpress NAME DESCRIPTION STARS OFFICIALwordpress The WordPress rich content management syst... 323 [OK]tutum/wordpress Wordpress Docker image - listens in port 8... 40 ...

~$ docker run wordpressUnable to find image 'wordpress:latest' locallylatest: Pulling from wordpress60fa28093d2e: Pull completea8f83d6d9aa9: Pull completed0ca8f539db8: Pull complete...

How to build my own?

Custom Container

~$ docker run -it ubuntu /bin/bashroot:/#

root:/# apt-get install -y mysql-serverReading package lists... DoneBuilding dependency treeReading state information... Done…

Commit Container

~$ docker psCONTAINER ID IMAGE COMMAND NAMESe5a0e59fd3fd ubuntu:latest "/bin/bash" prickly_nobel

~$ docker commit prickly_nobel tom/mysqlCONTAINER ID IMAGE COMMAND NAMESe5a0e59fd3fd ubuntu:latest "/bin/bash" prickly_nobel

~$ docker images REPOSITORY TAG IMAGE ID VIRTUAL SIZEtom/mysql latest 86a1fcd53530 512.1 MB

~$ docker run tom/mysql ...

Dockerfile

FROM ubuntuMAINTAINER Thomas Einwaller, tom@troii.com

RUN apt-get update && apt-get -y install apache2

ENV APACHE_RUN_USER www-dataENV APACHE_RUN_GROUP www-dataENV APACHE_LOG_DIR /var/log/apache2ENV APACHE_LOCK_DIR /var/lock/apache2ENV APACHE_PID_FILE /var/run/apache2.pidRUN mkdir /var/lock/apache2

EXPOSE 80

CMD ["/usr/sbin/apache2", "-D", "FOREGROUND"]

Docker build

~$ docker build -t tom/apache2 .Sending build context to Docker daemon 2.048 kBSending build context to Docker daemonStep 0 : FROM ubuntu ---> bdb87369f343Step 1 : MAINTAINER Thomas Einwaller, tom@troii.com ---> Using cache ---> adcf06d4a78fStep 2 : RUN apt-get update && apt-get -y install apache2 ---> Using cache ---> 5aee61ee1c84...Step 9 : EXPOSE 80 ---> Using cache ---> ac985c02bfd6Step 10 : CMD /usr/sbin/apache2 -D FOREGROUND ---> Running in 0a822e00e190 ---> 89ac6eef066cSuccessfully built 89ac6eef066c

Docker history

~$ docker history tom/apache2IMAGE CREATED CREATED BY SIZEa6b064aec848 2 minutes ago /bin/sh -c #(nop) CMD ["/usr/sbin/apache2" "- 0 Bdc0e02dc4d11 2 minutes ago /bin/sh -c #(nop) EXPOSE 80/tcp 0 B1bc593d23431 2 minutes ago /bin/sh -c mkdir /var/lock/apache2 0 Bafdda46774c6 2 minutes ago /bin/sh -c #(nop) ENV APACHE_PID_FILE=/var/ru 0 B7f1a112bfd2e 2 minutes ago /bin/sh -c #(nop) ENV APACHE_LOCK_DIR=/var/lo 0 B8a95fc52c646 2 minutes ago /bin/sh -c #(nop) ENV APACHE_LOG_DIR=/var/log 0 Ba32a610ccb8 2 minutes ago /bin/sh -c #(nop) ENV APACHE_RUN_GROUP=www-da 0 B8083f7e42d6d 2 minutes ago /bin/sh -c #(nop) ENV APACHE_RUN_USER=www-dat 0 B8cbd4df21d8b 2 minutes ago /bin/sh -c apt-get update && apt-get -y insta 30.63 MBddfbce728239 2 minutes ago /bin/sh -c #(nop) MAINTAINER Thomas Einwaller 0 Bbdb87369f343 5 weeks ago /bin/sh -c #(nop) CMD [/bin/zsh] 0 B....

Docker push

~$ docker push tom/apache2Sending image listPushing repository tom/apache2 (1 tags)Image 511136ea3c5a already pushed, skippingImage 9fec74352904 already pushed, skippingImage d0955f21bf24 already pushed, skipping...

Docker push

~$ docker push tom/apache2Sending image listPushing repository tom/apache2 (1 tags)Image 511136ea3c5a already pushed, skippingImage 9fec74352904 already pushed, skippingImage d0955f21bf24 already pushed, skipping...

and pull

~$ docker pull tom/apache2Unable to find image 'tom/apache2:latest' locallylatest: Pulling from tom/apache260fa28093d2e: Pull completea8f83d6d9aa9: Pull completed0ca8f539db8: Pull complete...

How to use it?

gitrepository

artifactrepository

DevelopmentEnvironment

Continuous Integration

SourceArtifact

(.war, .jar, ...)

Test/ProdEnvironment

build / deployment pipeline before docker

build / deployment pipeline with docker

gitrepository

artifactrepository

dockerrepository

DevelopmentEnvironment

Continuous Integration

SourceArtifact

(.war, .jar, ...)

Continuous Integration

Test/ProdEnvironment

DockerImage

Development Environment

~$ docker run -v /Users/tom/website:/website nginx…

~$ docker run -v /Users/tom/code:/code node…

or

Backup Tools

~$ docker run --volumes-from=nexus_data -e SOURCE=/usr/local/sonatype-work -e TARGET=s3://s3-eu-west-1.amazonaws.com/nexus-backup/ -e TARGET_USER=$AWSACCESSKEYID -e TARGET_PASS=$AWSSECRETACCESSKEY duply

~$ docker run --link mysql:db -e BUCKET_NAME=mysql-backup -e AWSACCESSKEYID=$AWSACCESSKEYID -e AWSSECRETACCESSKEY=$AWSSECRETACCESSKEY -e DBNAMES=test -e USERNAME=user -e PASSWORD=password automysqlbackup

Backup Tools

~$ docker run -v /home/tom/development/src:/src groovy //.gvm/groovy/current/bin/groovy /src/script.groovy

~$

dexec

dexec

Docker machine

~$ docker-machine create --driver virtualbox devINFO[0001] Downloading boot2docker.iso to /home/tom/.docker/machine/INFO[0011] Creating SSH key...INFO[0012] Creating VirtualBox VM...INFO[0019] Starting VirtualBox VM......

~$ docker-machine lsNAME ACTIVE DRIVER STATE URLdev * virtualbox Running tcp://192.168.99.103:2376staging digitalocean Running tcp://104.236.50.118:2376

Docker compose

nginx:image: nginx:1.9.6

ports: - "80:80" links: - webappwebapp: build: . links: - dbdb: image: postgres

docker swarm

docker networking

https://github.com/docker/dockercraft

https://github.com/docker/dockercraft

conclusion

• set up development environments (database, languages, …)

• move packages to test environments (no more “works on my machine”)

• move the SAME package to production (server, cloud …)

timr.com discount code ‘TOPCONF’ -20 %

@tompsontom@troii.com