Cost and technical judgment
EKS Auto Mode: The No-Go Decision
An evaluation of EKS Auto Mode for 10+ clusters and 1,000+ workloads, weighing migration feasibility, reliability, and compute cost.
Professional case study
10+ clusters evaluated
1,000+ workloads assessed
10–12% compute-cost increase
Problem
Adopting EKS Auto Mode required evidence that networking, load balancing, storage, and controller migration could meet the needs of the existing platform at an acceptable cost.
Action
Evaluated EKS Auto Mode for 10+ clusters and 1,000+ workloads. Validated networking and load-balancer migration paths while investigating EBS migration, controller coexistence, and compute-cost impact.
Outcome
Recommended a no-go after identifying EBS migration and controller-coexistence blockers alongside a 10–12% compute-cost increase in this evaluation. The recommendation weighed reliability, migration effort, and cost.
engineering takeaways
Reusable patterns from the work.
These notes focus on the engineering judgment, tradeoffs, and patterns behind the work.
- Separated validated networking and load-balancer paths from unresolved migration blockers.
- Assessed EBS migration and controller coexistence alongside reliability requirements.
- Used the evaluated compute-cost increase and migration effort to support a no-go recommendation.
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