How to buidl and run
1. Build docker image
docker build -t [tagname] .
docker build -t helloworld:v1.1 .
2. Run docker image
docker run --name [SERVICE_NAME] -p 127.0.0.1:8080:8080 -d [tagname]
docker run –name my_hellow_world_server -p 127.0.0.1:8080:8080 -d helloworld:v1.1
3. Test connection
How to push image to Container Repository
1. Tag image
docker tag [tagname] gcr.io/[tagname]
docker tag helloworld:v1.1 gcr.io/helloworld:lastest
2. Push to container repository (gcr.io)
docker push gcr.io/luiz-gcp-repository/helloworld:latest
3. Confirm images
docker images
[email protected]:~/dev/docker/first$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
helloworld v1.1 92bcea9cc902 37 minutes ago 750MB
gcr.io/luiz-gcp-repository/helloworld latest 92bcea9cc902 37 minutes ago 750MB
How to deploy container to a Kubernetes cluster
0. Create the Kubernetes cluster
For this demonstration, Minikube is used.
1. Create the manifest file
helloworld_deploy.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: helloworld
name: helloworld
spec:
replicas: 1
selector:
matchLabels:
app: helloworld
template:
metadata:
labels:
app: helloworld
spec:
containers:
- image: gcr.io/helloworld:latest
name: hellogo
helloworld_service.yaml
apiVersion: v1
kind: Service
metadata:
name: hellowold
labels:
app: hellowold
spec:
type: NodePort
selector:
app: hellowold
ports:
- protocol: TCP
targetPort: 8080
port: 8080
nodePort: 30080
2. Apply the manifest files
Set context so you can target the cluster to deploy the manifest.
kubectl config get-contexts
This should list all available context and you need to pick the target. If this
is for Minikube, then it should be minikube.
kubectl config set-context [target-context]
kubectl config set-context minikube
Once the target cluster is set, you now can deploy the manifest using the folloiwng commands:
kubectl apply -f helloworld_deploy.yaml
kubectl apply -f helloworld_service.yaml
