Create GKE pod from local image

By amit

This blog, I will be covering following:

  • create gke cluster from gcloud sdk
  • few gcloud command line option
  • create container registry in google cloud
  • Push local image to google cloud registry
  • using kubectl create pod using that image

Prerequisites:

My environment is centos 7

sudo tee -a /etc/yum.repos.d/google-cloud-sdk.repo << EOM
[google-cloud-sdk]
name=Google Cloud SDK
baseurl=https://packages.cloud.google.com/yum/repos/cloud-sdk-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg
       https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
EOM
yum install google-cloud-sdk
yum install docker

yum install kubectl
gcloud auth login
gcloud config set project <project name>
//for login and set the project name

create and explore google kubernetes engine (GKE) from gcloud

gcloud container clusters create example-cluster --zone us-central1-c
gcloud container clusters get-credentials  example-cluster   --zone us-central1-c
gcloud container clusters describe  example-cluster --zone us-central1-c

Enable and create container registry on google cloud

create tag and push the docker image on google container registry (gcr)

docker tag openwriteup:ubuntu  gcr.io/openwriteup/hellokubernetes/ubuntu
docker images
docker push gcr.io/openwriteup/hellokubernetes/ubuntu

yaml file to create pod

apiVersion: v1
kind: Pod
metadata:
  labels:
    run: ubuntu
  name: ubuntu
  namespace: default
  resourceVersion: "34418"
  selfLink: /api/v1/namespaces/default/pods/ubuntu
  uid: 7ee750fe-52a3-41f8-90be-5310270debad
spec:
  containers:
  - image: gcr.io/openwriteup/hellokubernetes/ubuntu
    imagePullPolicy: Always
    name: ubuntu
    resources:
      requests:
        cpu: 100m
    terminationMessagePath: /dev/termination-log
    terminationMessagePolicy: File
    volumeMounts:
    - mountPath: /var/run/secrets/kubernetes.io/serviceaccount
      name: default-token-jpglv
      readOnly: true
  dnsPolicy: ClusterFirst
  enableServiceLinks: true
//kubectl apply -f <.yaml file>
//kubectl get pods
//kubectl logs <pod name>