The Awwvision lab uses Kubernetes and Cloud Vision API to demonstrate how to use the Vision API to classify (label) images from Reddit's /r/aww subreddit and display the labelled results in a web app.
Awwvision has three components:
If you don't already have a Google Account (Gmail or Google Apps), you must create one. Sign-in to Google Cloud Platform console (console.cloud.google.com) and create a new project:
Remember the project ID, a unique name across all Google Cloud projects (the name above has already been taken and will not work for you, sorry!). It will be referred to later in this codelab as
Next, you'll need to enable billing in the Cloud Console in order to use Google Cloud resources.
Running through this codelab shouldn't cost you more than a few dollars, but it could be more if you decide to use more resources or if you leave them running (see "cleanup" section at the end of this document).
New users of Google Cloud Platform are eligible for a $300 free trial.
From the GCP Console click the Cloud Shell icon on the top right toolbar:
Then click "Start Cloud Shell":
It should only take a few moments to provision and connect to the environment:
This virtual machine is loaded with all the development tools you'll need. It offers a persistent 5GB home directory, and runs on the Google Cloud, greatly enhancing network performance and authentication. Much, if not all, of your work in this lab can be done with simply a browser or your Google Chromebook.
Once connected to the cloud shell, you should see that you are already authenticated and that the project is already set to your PROJECT_ID.
Run the following command in the cloud shell to confirm that you are authenticated:
gcloud auth list
Credentialed accounts: - <myaccount>@<mydomain>.com (active)
gcloud config list project
[core] project = <PROJECT_ID>
If it is not, you can set it with this command:
gcloud config set project <PROJECT_ID>
Updated property [core/project].
Enable the Vision API by visiting the APIs & Services Dashboard on the cloud console:
In this lab you will use
, Google Cloud Platform's command-line tool, to set up a Container Engine Kubernetes cluster. You can specify as many nodes as you want, but you need at least one. The cloud platform scope is used to allow access to the Pub/Sub and Vision APIs.
In Cloud Shell, run the following to create a cluster in the
gcloud config set compute/zone us-central1-f
Then start up the cluster by running:
gcloud container clusters create awwvision \ --num-nodes 2 \ --scopes cloud-platform
Run the following to use the container's credentials:
gcloud container clusters get-credentials awwvision
Verify that everything is working using the
kubectl command-line tool:
Now add sample data to your project by running:
git clone https://github.com/GoogleCloudPlatform/cloud-vision
In Cloud Shell, change to the
python/awwvision directory in the cloned cloud-vision repo:
Once in the
awwvision directory, run
make all to build and deploy everything:
As part of the process, Docker images will be built and uploaded to the Google Container Registry private container registry. In addition,
yaml files will be generated from templates, filled in with information specific to your project, and used to deploy the ‘redis', ‘webapp', and ‘worker' Kubernetes resources for the lab.
After you've deployed, check that the Kubernetes resources are up and running.
First, list the pods by running:
kubectl get pods
You should see something like the following, though your pod names will be different. Make sure all of your pods have a Running before executing the next command.
NAME READY STATUS RESTARTS AGE awwvision-webapp-vwmr1 1/1 Running 0 1m awwvision-worker-oz6xn 1/1 Running 0 1m awwvision-worker-qc0b0 1/1 Running 0 1m awwvision-worker-xpe53 1/1 Running 0 1m redis-master-rpap8 1/1 Running 0 2m
Next, list the deployments by running:
kubectl get deployments -o wide
You can see the number of replicas specified for each, and the images used.
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE CONTAINERS IMAGES SELECTOR awwvision-webapp 1 1 1 1 1m awwvision-webapp gcr.io/your-project/awwvision-webapp app=awwvision,role=frontend awwvision-worker 3 3 3 3 1m awwvision-worker gcr.io/your-project/awwvision-worker app=awwvision,role=worker redis-master 1 1 1 1 1m redis-master redis app=redis,role=master
Once deployed, get the external IP address of the webapp service by running:
kubectl get svc awwvision-webapp
It may take a few minutes for the assigned external IP to be listed in the output. You should see something like the following, though your IPs will be different.
NAME CLUSTER_IP EXTERNAL_IP PORT(S) SELECTOR AGE awwvision-webapp 10.163.250.49 18.104.22.168 80/TCP app=awwvision,role=frontend 13m
Copy and paste the external IP of the
awwvision-webapp service into a new browser to open the webapp, then click Start the Crawler button.
Next, click go back and you should start to see images from the /r/aww subreddit classified by the labels provided by the Vision API. You will see some of the images classified multiple times, when multiple labels are detected for them. (You can reload in a bit, in case you brought up the page before the crawler was finished).
Your results will look something like this: