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Dockerize Everything
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Thomas Einwaller
May 27, 2015
Technology
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Dockerize Everything
what is Docker and how can I use it?
Thomas Einwaller
May 27, 2015
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Transcript
Dockerize Everything Thomas Einwaller, troii Software
2008 2013
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Number of Processes ~$ ps ax | wc -l 283
~$ docker run ubuntu ps ax PID TTY STAT TIME COMMAND 1 ? Rs 0:00 ps ax
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code runtime libraries OS container what is in a container?
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
How to get started?
Kitematic
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Search and Run an Image ~$ docker search -s 10
wordpress NAME DESCRIPTION STARS OFFICIAL wordpress The WordPress rich content management syst... 323 [OK] tutum/wordpress Wordpress Docker image - listens in port 8... 40 ... ~$ docker run wordpress Unable to find image 'wordpress:latest' locally latest: Pulling from wordpress 60fa28093d2e: Pull complete a8f83d6d9aa9: Pull complete d0ca8f539db8: Pull complete ...
How to build my own?
Custom Container ~$ docker run -it ubuntu /bin/bash root:/# root:/#
apt-get install -y mysql-server Reading package lists... Done Building dependency tree Reading state information... Done …
Commit Container ~$ docker ps CONTAINER ID IMAGE COMMAND NAMES
e5a0e59fd3fd ubuntu:latest "/bin/bash" prickly_nobel ~$ docker commit prickly_nobel tom/mysql CONTAINER ID IMAGE COMMAND NAMES e5a0e59fd3fd ubuntu:latest "/bin/bash" prickly_nobel ~$ docker images REPOSITORY TAG IMAGE ID VIRTUAL SIZE tom/mysql latest 86a1fcd53530 512.1 MB ~$ docker run tom/mysql ...
Dockerfile FROM ubuntu MAINTAINER Thomas Einwaller,
[email protected]
RUN apt-get update
&& apt-get -y install apache2 ENV APACHE_RUN_USER www-data ENV APACHE_RUN_GROUP www-data ENV APACHE_LOG_DIR /var/log/apache2 ENV APACHE_LOCK_DIR /var/lock/apache2 ENV APACHE_PID_FILE /var/run/apache2.pid RUN 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 kB Sending build context to Docker daemon Step 0 : FROM ubuntu ---> bdb87369f343 Step 1 : MAINTAINER Thomas Einwaller,
[email protected]
---> Using cache ---> adcf06d4a78f Step 2 : RUN apt-get update && apt-get -y install apache2 ---> Using cache ---> 5aee61ee1c84 ... Step 9 : EXPOSE 80 ---> Using cache ---> ac985c02bfd6 Step 10 : CMD /usr/sbin/apache2 -D FOREGROUND ---> Running in 0a822e00e190 ---> 89ac6eef066c Successfully built 89ac6eef066c
Docker history ~$ docker history tom/apache2 IMAGE CREATED CREATED BY
SIZE a6b064aec848 2 minutes ago /bin/sh -c #(nop) CMD ["/usr/sbin/apache2" "- 0 B dc0e02dc4d11 2 minutes ago /bin/sh -c #(nop) EXPOSE 80/tcp 0 B 1bc593d23431 2 minutes ago /bin/sh -c mkdir /var/lock/apache2 0 B afdda46774c6 2 minutes ago /bin/sh -c #(nop) ENV APACHE_PID_FILE=/var/ru 0 B 7f1a112bfd2e 2 minutes ago /bin/sh -c #(nop) ENV APACHE_LOCK_DIR=/var/lo 0 B 8a95fc52c646 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 B 8083f7e42d6d 2 minutes ago /bin/sh -c #(nop) ENV APACHE_RUN_USER=www-dat 0 B 8cbd4df21d8b 2 minutes ago /bin/sh -c apt-get update && apt-get -y insta 30.63 MB ddfbce728239 2 minutes ago /bin/sh -c #(nop) MAINTAINER Thomas Einwaller 0 B bdb87369f343 5 weeks ago /bin/sh -c #(nop) CMD [/bin/zsh] 0 B ....
Docker push ~$ docker push tom/apache2 Sending image list Pushing
repository tom/apache2 (1 tags) Image 511136ea3c5a already pushed, skipping Image 9fec74352904 already pushed, skipping Image d0955f21bf24 already pushed, skipping ... and pull ~$ docker pull tom/apache2 Unable to find image 'tom/apache2:latest' locally latest: Pulling from tom/apache2 60fa28093d2e: Pull complete a8f83d6d9aa9: Pull complete d0ca8f539db8: Pull complete ...
How to use it?
git repository artifact repository Development Environment Continuous Integration Source Artifact
(.war, .jar, ...) Test/Prod Environment build / deployment pipeline before docker
build / deployment pipeline with docker git repository artifact repository
docker repository Development Environment Continuous Integration Source Artifact (.war, .jar, ...) Continuous Integration Test/Prod Environment Docker Image
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
Docker machine ~$ docker-machine create --driver virtualbox dev INFO[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 ls NAME ACTIVE DRIVER STATE URL dev * virtualbox Running tcp://192.168.99.103:2376 staging digitalocean Running tcp://104.236.50.118:2376
Docker compose web: build: . links: - db ports: -
"8000:8000" db: image: postgres
docker swarm
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