Ingress, lb, storage, network...
And I have my small setup running with all of it too. Took me a weekend to set it up.
Rke2, nginx ingress, classic lb in front, cert manager and everything else in argocd.
K8s is NOT easy, and I do not believe that in it's current form it is the pinnacle of deployment/orchestration technologies. I am waiting for what is next, because the pain that I have personally experienced around K8s that I know others are feeling as well does not make it a perfect solution for everything, and definitely not usable for others.
At the end of the day it's a tool, and it is sometimes difficult to work with.
It is usually a game of finding the correct spaghetti(log) in a full plate.
And I think it's the best thing for infra since pre cut bread.
In what issues did you run?
The initial deployment for EKS requires multiple plugins to get to something that is "functional" for most production workloads. K8s fails in spectacular ways (even using Argo, worse using Argo TBH) that require manual intervention. Local disk support for certain types of workloads is severely depressing. Helm is terrible (templating Yaml... 'nuff said). Security groups, IAM roles, and other cloud provider functions require deep knowledge of K8s and the cloud provider. Autoscaling using Karpenter is difficult to debug. Karpenter doesn't gracefully handle spot instance cost.
I could go on, but these are the things you will experience in the first couple days of attempting to use k8s. Overall, if you have deep knowledge of K8s, go for it, but It is not the end-all solution to Infra/container orchestration in my mind.
I fought with a workload for over a day with our K8s experts, it took me an hour to deploy it to an EC2 ASG for a temporary release while moving it back to K8s later. K8s IS difficult, and saying it's not has a lot of people questioning the space.
The way I see it is it starts off easy, and quickly ramps up to extremely complex. This should not be the case.
I worked at a company that had their own deployment infra stack and it was 1000x better than K8s. This is going to be the next step in the K8s space I believe and it may use K8s underneath the covers, but the level of abstraction for K8s is all wrong IMO and it is trying to do too much.