Docker
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Yeah, DAU-docker! | Yeah, DAU-docker! | ||
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==First install docker== | ==First install docker== | ||
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** this file has to be provided to the docker or put into the container. Seems to be several ways to do it. | ** this file has to be provided to the docker or put into the container. Seems to be several ways to do it. | ||
* docker stop $DOCKERNAME # stop the container as we want to mount data... | * docker stop $DOCKERNAME # stop the container as we want to mount data... | ||
− | + | * docker rm $DOCKERNAME # I have no idea how to add parameters, so I just start from zero | |
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===Create wiki data container=== | ===Create wiki data container=== | ||
− | * docker | + | * docker create --name ${DOCKERNAME}-data -v /data nickstenning/mediawiki /bin/true |
− | * cat LocalSettings.php | docker exec -i ${DOCKERNAME} | + | * docker run --name ${DOCKERNAME} --volumes-from ${DOCKERNAME}-data --link wiki-mysql:mysql -p $WEBPORT:80 -d nickstenning/mediawiki |
− | * docker exec -i ${DOCKERNAME} | + | * cat LocalSettings.php | docker exec -i ${DOCKERNAME} sh -c 'cat > /data/LocalSettings.php' |
− | * docker exec -i ${DOCKERNAME} | + | * docker exec -i ${DOCKERNAME} chown www-data:www-data /data/LocalSettings.php |
+ | * docker exec -i ${DOCKERNAME} chmod 444 /data/LocalSettings.php | ||
* echo "wiki is on http://localhost:$WEBPORT/index.php" | * echo "wiki is on http://localhost:$WEBPORT/index.php" |
Latest revision as of 23:16, 8 February 2016
My little page about getting docker to run, done by somebody having no idea what docker is.
Yeah, DAU-docker!
Contents |
[edit] First install docker
- sudo apt-get install docker.io
- sudo usermod -a -G docker $(id -un)
- # logoout/login to get your group attribution
[edit] Learn something about the docker philosophy
You usually never log in to the container but specify all settings in the Dockerfile. Recreating the container should give you a ready to run application.
Most installs don't care really what happens to your data, but docker has a feature for this. Put the data into a separate container than the application. Then make the data container mount points visible in your application container. This way you can replace the application (update) without needing a backup/restore step.
[edit] Mediawiki
[edit] Fist some settings
- WEBPORT=8080 # on which port the webserver should listen on the main host, if you have already a webserver, 80 won't work
- DBPASSWORD="$(openssl rand -base64 9)" # the password for the database (humm... save it :-)
- DOCKERNAME="mediawiki"
[edit] Create a database
- # inspired from https://hub.docker.com/_/mysql/
- # Create a data container with a directory /var/lib/mysql
- docker create -v /var/lib/mysql --name wiki-mysql-data mysql:latest /bin/true
- docker run --name wiki-mysql --volumes-from wiki-mysql-data -e MYSQL_ROOT_PASSWORD=$DBPASSWORD -d mysql:latest
- docker ps -a | grep wiki-mysql.* # look the nice containers we just did
[edit] Create a mediawiki
well probably something like found here https://hub.docker.com/r/nickstenning/mediawiki/ (with data container support) as stated on that webpage:
- docker run --name $DOCKERNAME --link wiki-mysql:mysql -p $WEBPORT:80 -d nickstenning/mediawiki
[edit] Configure mediawiki
- echo "connect to http://localhost:$WEBPORT/"
- click on "setup the wiki"
- database host: mysql
- database name: mysql
- table prefix: mw #change this if you install more than one mediawiki into this database
- username: root
- echo password: $DBPASSWORD
- at end of setup you get a LocalSettings.php to download
- this file has to be provided to the docker or put into the container. Seems to be several ways to do it.
- docker stop $DOCKERNAME # stop the container as we want to mount data...
- docker rm $DOCKERNAME # I have no idea how to add parameters, so I just start from zero
[edit] Create wiki data container
- docker create --name ${DOCKERNAME}-data -v /data nickstenning/mediawiki /bin/true
- docker run --name ${DOCKERNAME} --volumes-from ${DOCKERNAME}-data --link wiki-mysql:mysql -p $WEBPORT:80 -d nickstenning/mediawiki
- cat LocalSettings.php | docker exec -i ${DOCKERNAME} sh -c 'cat > /data/LocalSettings.php'
- docker exec -i ${DOCKERNAME} chown www-data:www-data /data/LocalSettings.php
- docker exec -i ${DOCKERNAME} chmod 444 /data/LocalSettings.php
- echo "wiki is on http://localhost:$WEBPORT/index.php"
More help: well the usual mediawiki help
[edit] Engelsystem
This does not use a data container, but as it's often only for a short event, I don't care.
Give some configuration stuff
- ENGELPORT=80 # on which port the engel system should listen on the main host, if you have a webserver, 80 won't work
- ENGELDB=3306 # on which port the mysql of the engelsystem should be visible on the main host
- DBPASSWORD="$(openssl rand -base64 9)" # the password for the database (humm... save it it :-)
- ENGELPASSWORD="$(openssl rand -base64 9)" # the password for the engelsystem (humm... save it it :-)
- DOCKERNAME="engelsystem"
- ENGELADMIN="engeladmin" # well just use it
from https://github.com/ruep/dockerfile-engel
- git clone https://github.com/ruep/dockerfile-engel.git
- cd dockerfile-engel/
- docker build -t engelweb-app . # this takes a long time
- docker run --name "$DOCKERNAME" -d -p ${ENGELPORT}:80 -p ${ENGELDB}:3306 -e MYSQL_PASS="$DBPASSWORD" engelweb-app
- docker exec -t "$DOCKERNAME" sed -i 's/-pengel/-p'$DBPASSWORD'/' /engelweb/db/createdb.sh # needed coz db pass hardcoded
- docker exec -t "$DOCKERNAME" /engelweb/db/createdb.sh engelsystem engeladmin "$ENGELPASSWORD"
- docker exec -t "$DOCKERNAME" sh -c "/usr/bin/mysql -uadmin -p$DBPASSWORD engelsystem < /engelweb/db/install.sql"
- docker exec -t "$DOCKERNAME" sh -c "/usr/bin/mysql -uadmin -p$DBPASSWORD engelsystem < /engelweb/db/update.sql"
- echo "Please remember the database password: $DBPASSWORD"
- echo "Please remember the engelsystem login: ${ENGELADMIN} ${ENGELPASSWORD}"
- echo login to http://localhost:$ENGELPORT/ with user 'admin' and password 'asdfasdf'