In today’s world, it is normal to see applications running on Kubernetes and exposed with ingress nginx.
Authentication can be added to any application exposed by ingress nginx by using oauth2-proxy. Using the following annotations configures nginx’s http auth request module.
nginx.ingress.kubernetes.io/auth-signin: https://oauth2-proxy-ingress/oauth2/start?rd=https://$host$request_uri$is_args$args nginx.ingress.kubernetes.io/auth-url: https://oauth2-proxy-ingress/oauth2/auth When a user is not authenticated, nginx will redirect them to the OAuth2 proxy, prompt for login, generate a cookie and redirect back to the application.
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