Docker Registry

Create a docker registry inside k8s

Setup k8s

Create the namespace and PersistentVolumeClaim

kubectl apply -f ./k8s

Add the twuni repo to your local helm

helm repo add twuni https://helm.twun.io

helm repo update

Install the registry

helm install docker-registry twuni/docker-registry -n docker-registry -f docker-registry-values.yaml

This will create the docker-registry.docker-registry service on port 5000 and create a nodePort on 30100. This is required since the kubernetes nodes will need to be able to get to the registry using localhost:30100.

Using codezero consume the registry

czctl compose start -f docker-registry-compose.yaml

Test that it works

curl -I http://docker-registry.docker-registry:5000/

Using the registry

If you local architecture is the same as your kubernetes architecture then you can use the following, if not skip to the building in kubernetes section.

Build hello

docker build -t hello:latest hello

Tag it for the docker-registry

docker tag hello:latest docker-registry.docker-registry:5000/hello:latest

Push it to the docker-registry

docker push docker-registry.docker-registry:5000/hello:latest

Deploy hello

kubectl apply -f hello.yaml

Consume the hello service

czctl compose start -f hello-compose.yaml

Test

curl hello.hello-demo:8080

Building inside kubernetes

Create a buildx builder to use the kubernetes cluster

kubectl create namespace buildkit
docker buildx create  \
  --config ./buildkitd.toml \
  --bootstrap \
  --name=kube \
  --driver=kubernetes \
  --driver-opt=namespace=buildkit,replicas=4,qemu.install=true

Make sure the deployments are running

kubectl -n buildkit get deployments

Build the docker images and push to the docker-registry

docker buildx build \
  --builder=kube \
  --platform=linux/amd64,linux/arm64 \
  -t docker-registry.docker-registry:5000/hello:latest \
  --push hello

Deploy hello

kubectl apply -f hello.yaml

Consume the hello service

czctl compose start -f hello-compose.yaml

Test

curl hello.hello-demo:8080