kubernetes-ingress-controller | : gorilla : Kong for Kubernetes : The official Ingress | Cloud library

Most of the solutions I've tried out seem to perform mTLS during the TLS handshake as nicely depicted here. So this is what I understand OSI Layer 4 (TCP/IP) authentication method.

Since TLS is above layer OSI layer 4 the authentication is also above layer 4. But OSI layers aside (which don't sufficiently match today's reality above layer 4 anyway) you essentially ask at what stage the mutual authentication happens.

Mutual authentication in TLS happens in two stages: requesting the clients certificate and validating that the certificate matches the requirements. Requesting the certificate is always done inside the TLS handshake, although it does not need to be the initial TLS handshake of the connection.

Validating the certificate can be done inside the TLS handshake, outside of it or a combination of both. Typically it is checked inside the handshake that the certificate is issued by some trusted certificate authority, but further checks for a specific subject or so might be application specific and will thus be done after the TLS handshake inside the application. But it might also be that the full validation is done inside or outside the TLS handshake.

Accepting any certificates inside the TLS handshake and validating the certificate then outside the handshake only, has the advantage that one can return a useful error message to the client inside the established TLS connection. Validation errors inside the TLS handshake instead result in cryptic errors like handshake error alerts or just closing the connection, which are not that helpful to debug the problem.

In this situation, For me, this method always works. At first go to your container and then use these commands:

Firstly take a look at this issue: ip-whitelist-support.

IPs are not whitelisted for TCP services, an alternative would be to create a separate firewall for the TCP services and whitelist the IPs at the firewall level.

For specific location {{ $path }} we have defined {{ if isLocationAllowed $location }}.

Check official Ingress documentation: ingress-kubernetes.

Ingress exposes HTTP and HTTPS routes from outside the cluster to services within the cluster. Traffic routing is controlled by rules defined on the Ingress resource.

An Ingress does not expose arbitrary ports or protocols. Exposing services other than HTTP and HTTPS to the internet typically uses a service of type Service.Type=NodePort or Service.Type=LoadBalancer.

You must have an Ingress controller to satisfy an Ingress. Only creating an Ingress resource has no effect.

In this case Ingress resource instrument ingress-controller how to deal with http/https requests. In this approach nginx-ingress controller as a software (introduce layer-7 functionality/loadbalancing).

If you are interested with nginx ingress tcp support:

Ingress does not support TCP or UDP services. For this reason this Ingress controller uses the flags --tcp-services-configmap and --udp-services-configmap

See: exposing-tcp-udp-services

If you want to check more granular configuration while working with your tcp service you should consider using L4 loadbalancing/firewall settings provided by your cloud provider.

It's failing because kubernetes cannot download the specified image. Check the events section Warning Failed 3s kubelet Failed to pull image "quay.io/kubernetes-ingress-controller/nginx-ingress-controller:master": rpc error: code = Unknown desc = Error response from daemon: Get https://quay.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

Maybe you dont have internet connectivity or this image does not exist. You can try running docker pull quay.io/kubernetes-ingress-controller/nginx-ingress-controller:master from your computer

As mentioned in the logs

We did it!! Using FileConfigProvider. All the needed information was here.

We just had to parametrize connect-secrets.properties according to our requirement and substitute env vars value on startup.

This doesn't allow using Env Vars via Postman. But parametrized connect-secrets.properties specifically tuned according to our need did the job and FileConfigProvider did the rest by picking values from connect-secrets.properties

Found a way to implement this using env vars here.

keycloak is exposed on "/auth" which is the default web-context.

• I understand that as default web-context, means that you want everything sent to / should be redirected to keycloak.
• So you need to set a different target for Sentry, like /sentry.
• kubernetes.io/ingress.class: sentry-nginx is not a valid ingress.class in kubernetes.io that's probably why your ingress is not being considered.
• Only one deployment of Nginx-Ingress is needed to proxy traffic between multiple apps.
• The trick here is to expose sentry as mydomain.com/sentry and the app itself receives the connection directly on / as required.

In order to achieve it you can use rewrite-target, learn more here.

• It will create a capture group and send to the appropriate service.
• This is what your ingress should look like:

You can disable these headers via the headers configuration property. Also noted on the same page is the fact that configuration properties can also be specified as environment variables.

You can thus update your Deployment to specify the headers = off property as an environment variable. Something similar to:

Route53 will only respond request coming from your internal and allowed VPC's. You cannot reach the domain out of your VPC.

To solve the issue, change your zone to public, or use a VPN with Simple AD to forward requests to your private zone as described here.

References:

Working with private hosted zones