Running a custom docker image on GKE

Question

I want to use my custom docker image that I build on my machine on GKE. How can I do that?

Answer 1

You'll have tom push your image to Google Container Registry and then refer it form your pod manifest.

Make sure that your DOCKER_HOST is setup properly, your Google Container Engine is running the latest version kubernetes and you have Google Cloud SDK installed.

1. Setting environment variables

   gcloud components update kubectl
   gcloud config set project <your-project>
   gcloud config set compute/zone <your-cluster-zone>
   gcloud config set container/cluster <your-cluster-name>
   gcloud container clusters get-credentials <your-cluster-name>
   

2. Tagging image

   docker tag <your-image> gcr.io/<your-project>/<your-image>
   

3. Push it on the registry

   gcloud docker push gcr.io/<your-project>/<your-image>
   

4. Pod manifest for your container: my-pod.yaml

   id: my-pod
   kind: Pod
   apiVersion: v1
   desiredState:
     manifest:
       containers:
       - name: <container-name>
         image: gcr.io/<your-project>/<your-image>
       ...
   

5. Schedule pod

   kubectl create -f my-pod.yaml
   

6. If you have multiple pods setup do this from step 4 for each of them. You can also have multiple definitions in a line using --- as delimiter