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GKE.md

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Kubernetes Architecture ![[Screenshot 2022-07-25 at 09.04.43.png]]

**kubectl command syntax **

![](images/Screenshot 2022-07-26 at 13.10.09.png)

Create a GKE cluster gcloud container clusters create [CLUSTER-NAME]

**Authenticate the cluster (after creating cluster, you need authentication credentials) gcloud container clusters get-credentials [CLUSTER-NAME]

**Create a new Deployment (https://kubernetes.io/docs/concepts/workloads/controllers/deployment/) ** kubectl create deployment hello-server —image=gcr.io/google-samples/hello-app:1.0 // create deployment hello-server from the hello-app container image

Create a Kubernetes Service (Kubernetes resource that lets you expose your app to external traffic kubectl expose deployment hello-server —type=LoadBalancer —port 8080 // create a Compute Engine load balancer expose on port 8080

Deleting the cluster gcloud container clusters delete [CLUSTER-NAME]

  1. To deploy your first version of the application, run the following commands in Cloud Shell to get up and running:

gcloud container clusters get-credentials echo-cluster --zone=us-central1-a

kubectl create deployment echo-web --image=gcr.io/qwiklabs-resources/echo-app:v1

kubectl expose deployment echo-web --type=LoadBalancer --port 80 --target-port 8000

  1. Build image in the lab

gcloud builds submit --tag gcr.io/$DEVSHELL_PROJECT_ID/echo-app:v2 .

  1. Authorize cloud shell to access Kubernetes cluster

gcloud container clusters get-credentials echo-cluster --zone us-central1-a

  1. Edit echo-web deployments kubectl edit deploy echo-web

  2. Scale replicas kubectl scale deploy echo-web --replicas=2