GitLab is of course an amazing piece of software. Continuous Integration (CI) or Continuous Deployment (CD) handling with GitLab Runner is even more fun to develop, build and deploy software.
I’m running a GitLab instance on a small local server within my private network. Also one instance of a GitLab Runner is running on the same machine. But sometimes I need some more small instances to run smaller tasks in parallel. This is a good job for one or more Raspberry Pis.
I have some prepared micro sd cards around. If needed just put it into some Raspberry Pis. Attach them to the network and make the building instances available. Each Raspberry is running docker. This is how to prepare the raspberry.
I am using a Raspberry Pi 3 B model running the latest Raspian Buster image (2019-09-26, download here: https://www.raspberrypi.org/downloads/raspbian/) without recommended software package.
First we are going to install Docker on raspian OS:
Install required packages
sudo apt install apt-transport-https ca-certificates software-properties-common -y
Download and install Docker package
curl -fsSL get.docker.com -o get-docker.sh && sh get-docker.sh
Allow pi user to run docker commands
sudo usermod -aG docker pi
Add docker key
sudo curl https://download.docker.com/linux/raspbian/gpg
Open for editing the following file
sudo nano /etc/apt/sources.list
Add the following line
deb https://download.docker.com/linux/raspbian/ stretch stable
Update the entire pi
sudo apt update && sudo apt upgrade -y
Install the docker service
systemctl start docker.service
Reboot the system to check if docker starts up correct
And finally check if the docker installation was successfully done by getting the docker info:
Next step is to install the gitlab runner software
Install GitLab Runner
Run GitLab package script
curl -L https://packages.gitlab.com/install/repositories/runner/gitlab-runner/script.deb.sh | sudo bash
Install software package on raspberry pi:
sudo apt-get install gitlab-runner
Reboot the system
After the reboot you should check the software status
sudo gitlab-runner status
If the software was installed successfully you should get a message like this:
gitlab-runner: Service is running!
The last step is to register your new GitLab Runner instance to your GitLab Server. Run the command and follow the instructions:
sudo gitlab-runner register
Hope this is helpful for you.
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