Deploying the oauth2_proxy side car

We are going to implement oauth2_proxy from bitly (https://github.com/bitly/oauth2_proxy). We will be following the steps indicated in the documentation for Azure AD (https://docs.microsoft.com/en-us/azure/active-directory/).

First, register an app with Azure AD as shown in the following screenshot:

Next, create a client ID secret by performing the following steps:

1. Select Certificates & secrets and go to New client secret:

2. Add the secret:

3. Click on the Copy icon and save the secret in a safe place:

4. Save the client and the tenant ID:

After creating the client ID secret, we will now launch oauth2_proxy with the following YAML file:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: oauth2-proxy
  namespace: kube-system
spec:
  replicas: 1
  selector:
    matchLabels:
      app: oauth2-proxy
  template:
    metadata:
      labels...