cka-learning VS kubernetes-network-policy-recipes

Here's the notes and preparation materials are written by my friend to pass CKA. Hope this will be helpful for your preparations as well.

Here is my learning repo where I kept my notes, study plan, sample tests etc. https://github.com/kmjayadeep/cka-learning

Further reading: Controlling Access to Kubernetes API What is TLS Configure Service Accounts Dynamic Admission Control Network Policy Recipes

See: https://github.com/ahmetb/kubernetes-network-policy-recipes/blob/master/04-deny-traffic-from-other-namespaces.md for an example of what you are looking to do.

This is not great for multi-tenancy, but you can correct this with NetworkPolicies.

🔗 https://github.com/ahmetb/kubernetes-network-policy-recipes

I'd recommend using this collection of network policy recipes to test out these 2 tools and see how they can be helpful to your workflow.

Here's an example policy I've tried. https://github.com/ahmetb/kubernetes-network-policy-recipes/blob/master/03-deny-all-non-whitelisted-traffic-in-the-namespace.md

The Network Policies recipes here: https://github.com/ahmetb/kubernetes-network-policy-recipes -- Do not under any circumstances overlook this goldmine of network policy examples. Super important.

Good to learn more in Kubernetes network policy for CKx exams and EKS. Below are resources: 1/ read official doc and try to understand them well - https://kubernetes.io/docs/concepts/services-networking/network-policies/ 2/ bookmark samples for exams and EKS setups - https://kubernetes.io/docs/concepts/services-networking/network-policies/#networkpolicy-resource 3/ do more practices at https://github.com/ahmetb/kubernetes-network-policy-recipes 4/ visualize (image below) and try more at https://editor.cilium.io/ - it allows you to save the final netpol in k8s netpol OR Cilium netpol (EKS-A is using Cilium !)