WireGuard VPN connection failure after switching to Cilium eBPF due to IP range conflict — resolved by migrating to a non-overlapping subnet
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GitHub: 212clab | Email: 212clab@gmail.com
Java OOM Troubleshooting
Java app ran out of memory, triggering the OOM Killer and taking down a worker node — JVM memory configuration analysis and fix
ALB Elastic IP Auto-Assignment Issue
Confirming automatic EIP assignment to internet-facing ALB is expected AWS behavior, and cost analysis
NLB vs ALB
NLB vs ALB - OSI layer, routing, performance, CloudFront integration, and practical selection criteria
EKS Node Cluster Join Failure Checklist
Full checklist for diagnosing EKS node group join failures - VPC DNS, subnet tags, security groups, and eks-auth VPC Endpoint