Development on ISG Blog · D-MATH

Moodle Development Environment

Thu, 20 Jun 2024 14:25:07 +0200

Develop moodle

Resources:

The following setup can be used to set up a moodle development environment, with rootless podman:

# D-MATH link podman-compose
ln -s /usr/bin/podman-compose ~/bin/docker-compose

# D-MATH clone moodle-docker repo
git clone https://github.com/moodlehq/moodle-docker.git
cd moodle-docker

# D-MATH set variables
export MOODLE_DOCKER_DB_PORT=15432
export MOODLE_DOCKER_APP_VERSION=18080
export MOODLE_DOCKER_SELENIUM_VNC_PORT=15900
export MOODLE_DOCKER_WEB_PORT=18000

# Change ./moodle to your /path/to/moodle if you already have it checked out
export MOODLE_DOCKER_WWWROOT=./moodle

# D-MATH add custom configuration
cat <<EOF > local.yml
services:
 webserver:
 volumes:
 - "${MOODLE_DOCKER_WWWROOT}/../moodledata:/var/www/moodledata"
 db:
 environment:
 PGDATA: /var/lib/postgresql/data/pgdata
 volumes:
 - "${MOODLE_DOCKER_WWWROOT}/../database:/var/lib/postgresql/data"
EOF

# Choose a db server (Currently supported: pgsql, mariadb, mysql, mssql, oracle)
export MOODLE_DOCKER_DB=pgsql

# D-MATH creating files with group access for moodle code
umask 007

# Get Moodle code, you could select another version branch (skip this if you already got the code)
git clone -b MOODLE_404_STABLE git://git.moodle.org/moodle.git $MOODLE_DOCKER_WWWROOT

# D-MATH add folder for moodle data
mkdir moodledata
mkdir database

# D-MATH setgid for automatic setting group permission
chmod 2770 moodle
chmod 2770 moodledata
chmod 2770 database

# Ensure customized config.php for the Docker containers is in place
cp config.docker-template.php $MOODLE_DOCKER_WWWROOT/config.php

# D-MATH set the permission to 33 inside the container for moodle code
podman unshare chown 33 -R moodle
podman unshare chown 33 -R moodledata
podman unshare chown 999 -R database

# Start up containers, choose docker.io to download the images
bin/moodle-docker-compose up -d

# Shut down and destroy containers
#bin/moodle-docker-compose down

Above we set the webserver port to 18000 so this means you now need to connect to http://localhost:18000 in your browser to see the application.

Build Automation with GitLab Pipelines

Wed, 03 Apr 2024 07:58:15 +0200

Do you still recompile and run your program (and ideally your tests) after every change, like developers did 20 years ago? Do your teammates still bother you about your specific setup that is needed to compile/run your projects? Well, then we’ve got some news for you!

We’ve set up GitLab Instance Runners on our central computing servers, so that people can run their build automation on powerful, independent machines. All managed and fully integrated on our GitLab Server.

minikube (Kubernetes Development)

Tue, 31 Oct 2023 12:07:58 +0100

If you want to develop something for kubernetes, you may need to run minikube. This can be done on our linux installations. The following commands should start a working “kubernetes cluster” on your installation:

mkdir ~/bin/

wget https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 -O ~/bin/minikube
chmod 755 ~/bin/minikube

cd ~/bin/
./minikube config set rootless true
./minikube config set driver podman
./minikube config set container-runtime containerd

./minikube start --cni calico

After minikube has started, you can check all running pods with the following:

Howto use docker at D-MATH

Wed, 17 May 2023 10:31:22 +0200

To use docker at D-MATH is to use podman -> https://podman.io/

With podman you can use all docker commands just write podman instead of docker in the command, all the parameters stay the same.

With podman we are able to provide a possibility that a user without administrative rights can download and run docker images.

Example 1

The following example will run the latest docker image of alpine linux (https://hub.docker.com/_/alpine).

podman run -ti -v $(pwd):/home/test alpine:latest