Simple example golang app with a k8s deployment for use in other examples.
This is good boilerplate code for starting a Golang project that will deploy on Kubernetes.
Sync a pod with rsync for fast K8s ECT cycle
How to build a x86/amd64 docker container image on Apple silicon (or any other arch)
Build, push and pull a container using Github GHCR or Gitlab Container Registry
Assuming you will deploy to an amd64 arch...
If building on an amd64 arch machine:
docker build --tag trivial-golang-k8s-deployment .
If on another arch, such as Apple Silicon etc.
docker buildx build --platform linux/amd64 --tag trivial-golang-k8s-deployment --load .
Or if need Cgo and you want an Alpine base image:
docker buildx build -f Dockerfile-cross-cgo-xx-alpine --platform linux/amd64 --tag trivial-golang-k8s-deployment --load .
To build the development images:
docker build --tag trivial-golang-k8s-deployment -f Dockerfile.dev .
Or
docker buildx build --platform linux/amd64 --tag trivial-golang-k8s-deployment -f Dockerfile.dev --load .
If you just want a test deployment using the original example - you can skip this
Otherwise read: https://www.izumanetworks.com/blog/use-github-gitlab-for-docker-registry/
For deployment on K8s you will need to push the docker image to a registry. You can't push to the registry for this repo, but these instructions will work if you forked this repo:
kubectl apply -f deployment.yaml
To apply our basic deployment.
apiVersion: v1 kind: Pod metadata: name: trivial-golang-k8s-deployment labels: app: trivial-golang-k8s-deployment spec: containers: - name: trivial-golang-k8s-deployment image: ghcr.io/izumanetworks/trivial-golang-k8s-deployment:latest imagePullPolicy: Always ports: - containerPort: 8080 livenessProbe: httpGet: path: /hello port: 8080 initialDelaySeconds: 5 periodSeconds: 5 imagePullSecrets: - name: regcred