learning-kubernetes

Learning kubernetes one hour at a time

1. kube-node-101

production

docker build -t sushantsahu/kube-node-101 -f Dockerfile
docker run -i -p 80:3000 -t sushantsahu/kube-node-101

dev/debug

docker run -i -v "$PWD"/package.json:/tmp/package.json -v "$PWD"/node_modules_linux:/tmp/node_modules -w /tmp -t node:10 npm install</
docker build -t sushantsahu/kube-node-101-tools -f Dockerfile-tools .
docker run -i -p 3000:3000 -v "$PWD"/:/app -v "$PWD"/node_modules_linux:/app/node_modules -t sushantsahu/kube-node-101-tools /bin/run-dev

production:slim

docker build -t sushantsahu/kube-node-101-run -f Dockerfile-run .
docker run -d -p 80:3000 -t sushantsahu/kube-node-101-run

Publish images to docker hub

Prod

docker tag sushantsahu/kube-node-101 sushantsahu/kube-node-101:1.0.0
docker push sushantsahu/kube-node-101:1.0.0

Tooling

docker tag sushantsahu/kube-node-101-tools sushantsahu/kube-node-101-tools:1.0.0
docker push sushantsahu/kube-node-101:1.0.0

Prod Slim

docker tag sushantsahu/kube-node-101-run sushantsahu/kube-node-101-run:1.0.0
docker push sushantsahu/kube-node-101-run:1.0.0

kubernetes: helm

helm install kube-101 chart/kube-101
helm list --all
helm status kube-101
helm history kube-101
helm rollback kube-101 <revision_no>
helm upgrade --install kube-101 chart/kube-101

export SAMPLE_NODE_PORT=$(kubectl get --namespace default -o jsonpath="{.spec.ports[0].nodePort}" services kube-101-service)
export SAMPLE_NODE_IP=$(kubectl get nodes --namespace default -o jsonpath="{.items[0].status.addresses[0].address}")
kubectl get pods
kubectl get services

Prometheus

helm repo add stable https://kubernetes-charts.storage.googleapis.com
helm repo update
helm install prometheus stable/prometheus

The Prometheus server can be accessed via port 80 on the following DNS name from within your cluster:
prometheus-server.default.svc.cluster.local
export POD_NAME=$(kubectl get pods --namespace default -l "app=prometheus,component=server" -o jsonpath="{.items[0].metadata.name}")

Grafana

helm install grafana stable/grafana --set adminPassword=ASDEF@123
export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=grafana,app.kubernetes.io/instance=grafana" -o jsonpath="{.items[0].metadata.name}")
kubectl --namespace default port-forward $POD_NAME 3000

Reference

https://github.com/CloudNativeJS/docker