We have an application running with two pods , if each pod is running in each nodes then we are facing intermittent timeouts (tried with ALB and also on the node itself) , if the both pods are running on single node then we don't face any issue.

Detailed Scenario:

1) We are using EKS Cluster with 2 Nodes 2) Using Calico over EKS

Use Case: Everything is working fine 1) Hello-word is running on 2 pods (A & B), both pods are running on Node1

• Curl from ALB - 200
• All good

Use Case: 504 timeout 1) Hello-word is running on 2 pods (A & B), now pod A is running on Node1 and pod B is running on Node2

• Curl from anywhere - every alternate req 504
• Curl from inside container all 200

Use Case: Everything is working fine 1) Hello- word is running with pod1 , all working fine

Summary: App is not working only when 2 pods are running on diff diff nodes