Docker

Revision as of 20:24, 31 January 2016

My little page about getting docker to run, done by somebody having no idea what docker is.

Yeah, DAU-docker!

ATTENTION this uses default passwords, and is completely unsecure !!!!

First install docker

• sudo apt-get install docker.io
• sudo usermod -a -G docker $(id -un)
• # logoout/login to get your group attribution

Mediawiki

Create a database

• # no idea what this does, I just pasted it from https://hub.docker.com/_/mysql/
• docker run --name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:latest

Create a mediawiki

• # well probably something like found here https://hub.docker.com/r/synctree/mediawiki/
• docker run --name some-mediawiki --link some-mysql:mysql -p 8080:80 -d synctree/mediawiki

• firefox http://localhost:8080/
  • database host: mysql
  • database name: mysql
  • table prefix: mw
  • username: root
  • password: my-secret-pw
  • 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, but none work. So this one works:
• cat LocalSettings.php | docker exec -i some-mediawiki sh -c 'cat > /var/www/html/LocalSettings.php'
• docker exec -i some-mediawiki chown www-data:www-data /var/www/html/LocalSettings.php
• docker exec -i some-mediawiki chmod 444 /var/www/html/LocalSettings.php
• firefox http://localhost:8080/index.php

More help: well the usual mediawiki help

Engelsystem

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

For some unknown reason the --name parameter is not used and you find yourself with a silly name WTF

• # docker ps - ( Die CONTAINER_ID merken... )
• # docker exec -i -t "$DOCKERNAME" bash # da stand anstatt engelsystem die containerid
• # docker rename containerid "$DOCKERNAME"
• 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}"