rancher | Complete container management platform | Continuous Deployment library

I need help understanding in detail how an ingress controller, specifically the ingress-nginx ingress controller, is supposed to work. To me, it appears as a black box that is supposed to listen on a public IP, terminate TLS, and forward traffic to a pod. But exactly how that happens is a mystery to me.

The primary goal here is understanding, the secondary goal is troubleshooting an immediate issue I'm facing.

I have a cluster with five nodes, and am trying to get the Jupyterhub application to run on it. For the most part, it is working fine. I'm using a pretty standard Rancher RKE setup with flannel/calico for the networking. The nodes run RedHat 7.9 with iptables and firewalld, and docker 19.03.

The Jupyterhub proxy is set up with a ClusterIP service (I also tried a NodePort service, that also works). I also set up an ingress. The ingress sometimes works, but oftentimes does not respond (connection times out). Specifically, if I delete the ingress, and then redeploy my helm chart, the ingress will start working. Also, if I restart one of my nodes, the ingress will start working again. I have not identified the circumstances when the ingress stops working.

Here are my relevant services:

I need to set up a kubernetes pod to create demo environments for clients of my web application, with a 20 day trial duration. After these 20 days, the pod should be automatically deleted, how can I make the pod self-destruct after 20 days? I use Rancher to deploy my pods.

We are trying to configure local-storage in Rancher and storage provisioner configured successfully. But when I create pvc using local-storage sc its going in pending state with below error.

I have a Spring Boot application with integration tests that are using testContainers.

Till recently, I used Docker Desktop and was able to easily run the test from within Intellij or from CLI.

Recently I changed my Windows machine to Rancher desktop.

Now when trying to run the integration tests gradle integrationTest I'm getting this error:

Caused by: java.lang.IllegalStateException: Previous attempts to find a Docker environment failed. Will not retry. Please see logs and check configuration at org.testcontainers.dockerclient.DockerClientProviderStrategy.getFirstValidStrategy(DockerClientProviderStrategy.java:109) at org.testcontainers.DockerClientFactory.getOrInitializeStrategy(DockerClientFactory.java:136) at org.testcontainers.DockerClientFactory.client(DockerClientFactory.java:178) at org.testcontainers.LazyDockerClient.getDockerClient(LazyDockerClient.java:14) at org.testcontainers.LazyDockerClient.authConfig(LazyDockerClient.java:12) at org.testcontainers.containers.GenericContainer.start(GenericContainer.java:310)

Is there an additional configuration that is needed in Intellij or Rancher or Windows to make it work?

I have found plenty of solutions for this problem all over the Internet, they all solve it using aws-cli and docker cli. Well, neither of them exist in K3OS. So I can't use them.

I created my image using Kaniko and successfully pushed it into a private ECR registry. For that purpose I created the configmap and secret as follows. Without using aws or docker cli.

I have what appears to be a common problem without a common solution. I am trying to access my .env data from my Nestjs app.module while importing Neo4jModule. If I use hardcoded values everything works fine but neither process.env or configService seems to get the values. I have seem many examples of this problem but apparently the answer is quite elusive. I have tried the following variations of answers but none works. I do understand that we are a bit early in the initialization process but I can't figure out how to delay the request until the initialization is complete.

I want to add a new cluster in addition to the default cluster on ArgoCD but when I add it, I get an error:
FATA[0001] rpc error: code = Unknown desc = REST config invalid: the server has asked for the client to provide credentials
I use the command argocd cluster add cluster-name
I download config file k8s of Rancher.
Thanks!

I set up K3s on a server with:

I have a same discussion in k3s github repository, but no one reply. Hope someone can give an answer here.

There are articles talking about the embedded etcd HA solution of k3s like this. One of the key behavior is adding a load balancer solution (EIP like this article or LB from the clound provider) between the agents and masters: