👀 Views: 17 💬 Answers: 1 📅 Created: 2025-06-01

kubernetes networking network-policy yaml

I'm dealing with I'm optimizing some code but I've searched everywhere and can't find a clear answer... I'm currently working with an scenario where my application pods want to reach each other after I applied a network policy to restrict traffic. I'm using Kubernetes v1.24 and have implemented a network policy that allows traffic only from certain labels, but now my services are failing to communicate. Here's the policy I've set up: ```yaml apiVersion: networking.k8s.io/v1 kind: NetworkPolicy metadata: name: allow-some-traffic namespace: my-namespace spec: podSelector: matchLabels: role: my-app policyTypes: - Ingress ingress: - from: - podSelector: matchLabels: role: frontend ``` This policy is intended to allow traffic from pods with the label `role: frontend` to pods with the label `role: my-app`. However, after applying it, I started seeing timeout errors when trying to access the service from the frontend pods: ``` behavior: connect ETIMEDOUT ``` I double-checked that the frontend pods have the correct label, and I've confirmed that the service is up and running. I've tried removing the policy and found that the services could communicate normally again. I also verified that there are no conflicting network policies in the same namespace. My cluster uses Calico as the CNI, and I'm unsure if there are additional configurations needed for the network policies to work as expected. Any guidance on what might be causing this restriction or how to debug it further would be greatly appreciated! My development environment is Windows. Any ideas what could be causing this? The stack includes Yaml and several other technologies. Am I approaching this the right way? This is part of a larger application I'm building.