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