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Kubernetes Cluster - Ngnix Load Balancer cannot connect (Doc ID 2789531.1)

Last updated on OCTOBER 20, 2021

Applies to:

Oracle Cloud Infrastructure - Oracle Container Engine for Kubernetes - Version N/A and later
Information in this document applies to any platform.

Symptoms

Customer Actions: redeploy the pods and then re-check whether they can hit the request to the ngnix controller; Symptom - It should be in the nginx ingress controller logs

Result: Once re-deploying pods in a CrashLoopBackOff state, Load Balancer can no longer connect.

 

Changes

Turning off worker nodes in the night and restarting it in the day is a business need.

Resulted in: Load Balancer stopped responding. On looking at the Security List for the LB and Worker node subnet we noticed that the LB security list did not have egress rules to the Worker-node subnet. After manually adding the egress rule to the Load Balancer subnet, the Load Balancer traffic was back to normal.

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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