Gitlab CI minikube development environment

Gitlab installation on minikube for CI testing

Install minikube

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube && rm minikube-linux-amd64

Create minikube machine

minikube start --cpus 4 --memory 8192 --addons ingress

Install gitlab helm repository

helm repo add gitlab https://charts.gitlab.io
helm repo update

Optional install traefik for git clone through ssh

helm repo add traefik https://traefik.github.io/charts
helm repo update
helm install traefik traefik/traefik

Install Gitlab Helm charts

helm dependency update
helm upgrade --install gitlab gitlab/gitlab \
--timeout 600s \
--set global.ingress.provider=traefik \
--set certmanager-issuer.email=me@localhost \
--set global.hosts.domain=$(minikube ip).nip.io \
--set global.hosts.externalIP=$(minikube ip) \
-f https://gitlab.com/gitlab-org/charts/gitlab/raw/master/examples/values-minikube.yaml

Installation may take for a while, if not too much resources some pods will be restarting a couple of times. Wait until the webserver is running at gitlab main page https://$(minikube ip)

Default login user is root and password can be get with the following command

kubectl get secret gitlab-gitlab-initial-root-password -ojsonpath='{.data.password}' | base64 --decode ; echo

Gitlab runner

With the default gitlab helm chart a runner is already installed, but if you wish to add more runners or used a custom values follow the following steps.

Generate values.yml with gitlab runner contents.

Registration token can be made in the admin user interface at https://$(minikube ip)/admin/runners/new

Certificate is created by default with the helm deployment name, otherwise download and create a secret or find whats the secret name in k8s

gitlabUrl: https://gitlab.192.168.49.2.nip.io
runnerRegistrationToken: "glrt-t1_P1oviNSAj83aiiKXr4UQ"
rbac:
    create: true
runners:
    privileged: true
certsSecretName: gitlab-wildcard-tls-chain

Deploy gitlab runner helm

helm install -f values.yml gitlab-runner gitlab/gitlab-runner

Create a file.gitlab-ci.yml in a new project to verify CI jobs

stages:
  - build

image-build:
  stage: build
  image:
    name: gcr.io/kaniko-project/executor:v1.23.2-debug
    entrypoint: [""]
  script:
    - |
      cat <<EOF > Dockerfile
      FROM alpine:latest
      RUN echo "Hello World from CI"
      EOF
    - /kaniko/executor
      --context "${CI_PROJECT_DIR}"
      --dockerfile "${CI_PROJECT_DIR}/Dockerfile"
      --destination "${CI_REGISTRY_IMAGE}:${CI_COMMIT_SHORT}"
      --no-push