Amazon EKS — Managed vs Self-Managed Kubernetes

3 minute read

Managed vs Self-Managed Kubernetes

Before committing to EKS, you should understand the alternatives. This page compares managed Kubernetes (EKS) with self-managed Kubernetes (kubeadm, kops, Rancher) so you can make an informed decision.

The Options

Kubernetes Deployment Options on AWS
┌────────────────────────────────────────────────────────┐
│                                                        │
│  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐   │
│  │   kubeadm   │  │    kops     │  │  Amazon EKS │   │
│  │             │  │             │  │             │   │
│  │ DIY on EC2  │  │ Automated   │  │ Fully       │   │
│  │ Full control│  │ on EC2      │  │ Managed     │   │
│  │ Full work   │  │ More control│  │ Less work   │   │
│  └─────────────┘  └─────────────┘  └─────────────┘   │
│                                                        │
│  ◄── More control          Less operational work ──►   │
│  ◄── More operational work     Less control ──►        │
└────────────────────────────────────────────────────────┘

Detailed Comparison

Aspect kubeadm (DIY) kops Amazon EKS
Control plane management You manage everything You manage, kops helps AWS manages
etcd management You backup, restore, scale kops manages AWS manages
HA setup Manual (stacked or external etcd) Built-in Built-in (3 AZ)
Upgrades Manual, risky Semi-automated AWS-guided, per-component
Cost EC2 cost only EC2 cost only EC2 + $0.10/hr cluster fee
Setup time Hours to days ~30 minutes ~15 minutes
AWS integration Manual (IAM, VPC, LB) Good Native (IRSA, VPC CNI, ALB)
Support Community only Community only AWS Support (paid plans)
Conformance You ensure it kops ensures it AWS ensures it
Best for Learning K8s internals Cost-sensitive teams with K8s expertise Production workloads on AWS

What You Give Up With EKS

Let’s be honest — EKS isn’t free, and there are trade-offs:

  1. $0.10/hour cluster fee — That’s $73/month just for the control plane, before any worker nodes
  2. Less control plane control — You can’t SSH into control plane nodes or customize etcd settings
  3. AWS-specific patterns — IRSA, VPC CNI, and aws-auth ConfigMap are AWS-specific; not portable
  4. Upgrade timelines — New K8s versions arrive on EKS ~2-4 weeks after upstream release
  5. Add-on management — Some add-ons have version compatibility matrices that can be tricky

What You Gain With EKS

The benefits far outweigh the trade-offs for most teams:

  1. 99.95% SLA — AWS guarantees control plane availability
  2. Zero etcd management — No more etcd backup scripts, compaction, or disaster recovery
  3. Security patching — Control plane is automatically patched by AWS
  4. Native AWS integration — IAM authentication, VPC networking, ELB load balancing work seamlessly
  5. EKS add-ons — Managed versions of CoreDNS, kube-proxy, VPC CNI with one-click updates
  6. Focus on apps — Your team spends time on application features, not Kubernetes infrastructure

Real-World Decision Framework

Ask yourself these questions:

Do you need Kubernetes specifically?
├── No → Consider ECS, App Runner, or Lambda
└── Yes
    ├── Is learning K8s internals the goal?
    │   └── Yes → Use kubeadm on EC2 (educational)
    ├── Is minimizing cost the #1 priority?
    │   └── Yes → Consider kops (no cluster fee)
    ├── Is production reliability critical?
    │   └── Yes → Use EKS ✅
    └── Do you need AWS Support?
        └── Yes → Use EKS ✅ (only option with AWS Support)

Cost Comparison (Monthly Estimate)

For a cluster with 3 t3.medium nodes in us-east-1:

Component kubeadm kops EKS
Control plane EC2 (3x t3.medium) $91 $91 $0 (AWS-managed)
EKS cluster fee $0 $0 $73
Worker nodes (3x t3.medium) $91 $91 $91
NAT Gateway (1 AZ) $32 $32 $32
Total $214 $214 $196

Surprise! EKS can actually be cheaper because you don’t need dedicated EC2 instances for the control plane. The $73/month cluster fee is less than running 3 control plane instances.

Common Mistakes

Mistake Why It’s Wrong
“EKS is too expensive” The $73/month cluster fee is less than self-managed control plane EC2 costs
“I’ll start with kubeadm and migrate to EKS later” Migration is painful — start where you want to end up
“kops is the same as EKS” kops still requires you to manage upgrades and patching
“I need full control of the control plane” Unless you’re a K8s vendor, you probably don’t

Quick Reference

Decision Factor Recommendation
Production workloads EKS
Learning Kubernetes internals kubeadm
Budget-constrained with K8s expertise kops
Need AWS Support EKS (only option)
Multi-cloud strategy EKS + EKS Anywhere

What’s Next?

Now let’s look at what EKS actually looks like under the hood in EKS Architecture Overview.

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