Deploy to Kubernetes in Google Cloud: Challenge Lab

 



[GSP318] : Deploy to Kubernetes in Google Cloud: Challenge Lab :-

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Task - 1 : Create a Docker image and store the Dockerfile :-

gcloud auth list
gsutil cat gs://cloud-training/gsp318/marking/setup_marking.sh | bash
gcloud source repos clone valkyrie-app
cd valkyrie-app
cat > Dockerfile <<EOF
FROM golang:1.10
WORKDIR /go/src/app
COPY source .
RUN go install -v
ENTRYPOINT ["app","-single=true","-port=8080"]
EOF
docker build -t valkyrie-app:v0.0.1 .
cd ..
cd marking
./step1.sh

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Task - 2 : Test the created Docker image :-

cd ..
cd valkyrie-app
docker run -p 8080:8080 valkyrie-app:v0.0.1 &
cd ..
cd marking
./step2.sh

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Task - 3 : Push the Docker image in the Google Container Repository :-

cd ..
cd valkyrie-app
docker tag valkyrie-app:v0.0.1 gcr.io/$GOOGLE_CLOUD_PROJECT/valkyrie-app:v0.0.1
docker push gcr.io/$GOOGLE_CLOUD_PROJECT/valkyrie-app:v0.0.1
sed -i s#IMAGE_HERE#gcr.io/$GOOGLE_CLOUD_PROJECT/valkyrie-app:v0.0.1#g k8s/deployment.yaml

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Task - 4 : Create and expose a deployment in Kubernetes :-

sed -i s#IMAGE_HERE#gcr.io/$GOOGLE_CLOUD_PROJECT/valkyrie-app:v0.0.1#g k8s/deployment.yaml
gcloud container clusters get-credentials valkyrie-dev --zone us-east1-d
kubectl create -f k8s/deployment.yaml
kubectl create -f k8s/service.yaml

git merge origin/kurt-dev
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Task - 5 : Increase the replicas from 1 to 3 :-

kubectl edit deployment valkyrie-dev

// Press "i" to edit and change "replicas" from 1 to 3.
   Press "Esc" -> ":wq" -> Enter

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Task - 6 : Update the deployment with a new version of valkyrie-app :-

docker build -t gcr.io/$GOOGLE_CLOUD_PROJECT/valkyrie-app:v0.0.2 . 
docker push gcr.io/$GOOGLE_CLOUD_PROJECT/valkyrie-app:v0.0.2
kubectl edit deployment valkyrie-dev

// Press 'i' to edit and change image to "image: gcr.io/YOUR_PROJECT_ID/valkyrie-app:v0.0.2".
   Press "Esc" -> ":wq" -> Enter

docker ps

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Task - 7 : Create a pipeline in Jenkins to deploy your app :-

docker kill container_id

export 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}")
kubectl port-forward $POD_NAME 8080:8080 >> /dev/null &
printf $(kubectl get secret cd-jenkins -o jsonpath="{.data.jenkins-admin-password}" | base64 --decode);echo

gcloud source repos list

// Open Jenkins Web View -> Preview on port 8080
   Username : admin
   Password : {Code output from previous command}
   
   -> Manage Jenkins -> Manage Credentials -> Global -> add credentials -> Kind: Google Service Account from metadata -> OK
   -> Jenkins -> New Item -> Name : valkyrie-app -> Pipeline -> OK
   -> Pipeline -> Script: Pipeline script from SCM -> SCM: Git
   -> Repository URL: {Url from previous command} -> Credentials: {Project id}
   -> Apply -> Save

// In cloud shell , run :-

sed -i "s/green/orange/g" source/html.go

sed -i "s/YOUR_PROJECT/$GOOGLE_CLOUD_PROJECT/g" Jenkinsfile
git config --global user.email "you@example.com"              // Email
git config --global user.name "student..."                       // Username
git add .
git commit -m "built pipeline init"
git push 

// In  Jenkins click Build and wait to get score.







Location: Mumbai, Maharashtra, India

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