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Scenario #132
Networking
K8s v1.22, AWS EKS
Service Exposure Failed Due to Misconfigured Load Balancer
A service exposure attempt failed due to incorrect configuration of the AWS load balancer.
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What Happened
The AWS load balancer was misconfigured, resulting in no traffic being routed to the service.
Diagnosis Steps
- 1Checked the service type (LoadBalancer) and AWS load balancer logs.
- 2Found that security group rules were preventing traffic from reaching the service.
Root Cause
Incorrect security group configuration for the load balancer.
Fix/Workaround
• Modified the security group rules to allow traffic on the necessary ports.
• Re-deployed the service with the updated configuration.Lessons Learned
Always review and verify security group rules when using load balancers.
How to Avoid
- 1Automate security group configuration checks.
- 2Implement a robust testing process for load balancer configurations.