GSP-318: Deploy to Kubernetes in Google Cloud
Overview
Please enter the following commands:
Task - 1 : Create a Docker image and store the Dockerfile
1gcloud auth list
2gsutil cat gs://cloud-training/gsp318/marking/setup_marking_v2.sh | bash
3gcloud source repos clone valkyrie-app
4cd valkyrie-app
5cat > Dockerfile <<EOF
6FROM golang:1.10
7WORKDIR /go/src/app
8COPY source .
9RUN go install -v
10ENTRYPOINT ["app","-single=true","-port=8080"]
11EOF
12docker build -t <Docker Image>:<Tag Name> .
13cd ..
14cd marking
15./step1_v2.sh
Task - 2 : Test the created Docker image
1cd ..
2cd valkyrie-app
3docker run -p 8080:8080 <Docker Image>:<Tag Name> &
4cd ..
5cd marking
6./step2_v2.sh
Task - 3 : Push the Docker image in the Google Container Repository
1cd ..
2cd valkyrie-app
3docker tag <Docker Image>:<Tag Name> gcr.io/$GOOGLE_CLOUD_PROJECT/<Docker Image>:<Tag Name>
4docker push gcr.io/$GOOGLE_CLOUD_PROJECT/<Docker Image>:<Tag Name>
Task - 4 : Create and expose a deployment in Kubernetes
1sed -i s#IMAGE_HERE#gcr.io/$GOOGLE_CLOUD_PROJECT/<Docker Image>:<Tag Name>#g k8s/deployment.yaml
2gcloud container clusters get-credentials valkyrie-dev --zone us-east1-d
3kubectl create -f k8s/deployment.yaml
4kubectl create -f k8s/service.yaml
Task - 5 : Update the deployment with a new version of valkyrie-app
1git merge origin/kurt-dev
2kubectl edit deployment valkyrie-dev
3### change replicas from 1 to <Replicas Count>
4### change <Tag Name> to <Updated Version> in two places
5docker build -t gcr.io/$GOOGLE_CLOUD_PROJECT/<Docker Image>:<Updated Version> .
6docker push gcr.io/$GOOGLE_CLOUD_PROJECT/<Docker Image>:<Updated Version>
Task - 6 : Create a pipeline in Jenkins to deploy your app
1docker ps
2docker kill <take container_id from above command>
3
4export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/component=jenkins-master" -l "app.kubernetes.io/instance=cd" -o jsonpath="{.items[0].metadata.name}")
5kubectl port-forward $POD_NAME 8080:8080 >> /dev/null &
6printf $(kubectl get secret cd-jenkins -o jsonpath="{.data.jenkins-admin-password}" | base64 --decode);echo
- Open Jenkins Web View -> Preview on port 8080
1 Username : admin
2 Password : {Code output from previous command}
3
Go through the following:
-> Manage Jenkins -> Manage Credentials -> Jenkins -> Global credentials (unrestricted) -> Add credentials -> Kind: Google Service Account from metadata -> OK
-> Jenkins -> New Item -> Name : valkyrie-app -> Pipeline -> Pipeline script from SCM -> Set SCM to git -> OK
-> Pipeline -> Script: Pipeline script from SCM -> SCM: Git
-> Repository URL: {find it using command: gcloud source repos list} -> Credentials: {Project id}
-> Apply -> Save
1sed -i "s/green/orange/g" source/html.go
2
3sed -i "s/YOUR_PROJECT/$GOOGLE_CLOUD_PROJECT/g" Jenkinsfile
4git config --global user.email "you@example.com" // Email
5git config --global user.name "student..." // Username
6git add .
7git commit -m "built pipeline init"
8git push
- In Jenkins click Build and wait to get score.
Congratulations, you're all done with the lab 😄