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Configuring gitlab.com CI and VPS server

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In this article, I decided to describe my experience with configuring gitlab CI and rented VPS.

Background


At work, uv. DevOps'y configured to me a deploy of projects in kubernetes ( I work as the Go-developer ). I have my own pet project - and I wanted to automate, but there was no particular desire to raise my gitlab (VPS is not rubber anyway).

Initial data



Create Repository


We create the repository that we want to automate.

I decided for tests to raise docker with nginx and forwarding to the html page.

Repository structure:

  • Dockerfile
    FROM nginx:latest
COPY html /var/www/html
COPY nginx.conf /etc/nginx/nginx.conf


  • nginx.conf
    events {}
http {
server {
    listen 80;
    location / {
            root /var/www/html;
    }
}
}


  • html
    • index.html
      <html>
<h1>Hello, Runner!</h1>
</html>


  • .gitlab-ci.yml
    
image: docker:19.03.8

before_script:
  - docker info

build:
  stage: build
  script:
    - docker build -t hellorunner .

deploy:
  stage: deploy
  script:
    - docker ps --filter name=hellorunner --quiet |  xargs --no-run-if-empty docker stop | xargs --no-run-if-empty  docker rm
    - docker run -d --restart=always --name hellorunner -p 8090:80 hellorunner
          
after_script:
    - docker system prune -f


Repository setup


Open settings -> CI

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Then, click Runners, expand.
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First, turn off the proposed runners - Disable shared runners

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Then, we are interested in - “Set up a specific Runner manually”

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We copy the token, in the future we will need it.

VPS Preparation


Install docker .

Install gitlab-runner .

Register a new runner.

! In the executor field, specify the docker version, as in the Dockerfile!
In the token field, specify the token that was remembered from gitlab


gitlab-runner register

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Now, you need to make small changes to the runner’s config.

nano /etc/gitlab-runner/config.toml

field

volumes = ["/cache"]

change to

volumes = ["/var/run/docker.sock:/var/run/docker.sock", "/cache"]

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Restarting the daemon

gitlab-runner restart

Back to gitlab / settings / CI / Runners again.

An active runner should appear.

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Edit the runner, by pressing.

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Allow to perform tasks without tags.

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Now execute push commits and follow the jobs.

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And finally, open the browser.

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Link to the

PS repository : I met a problem - I had an inside image that didn’t have access to the external network, the solution is create the file /etc/docker/daemon.json :

{
    "dns": ["8.8.4.4", "8.8.8.8"]
}


 service docker restart

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