Container Orchestration Beyond Kubernetes

Kubernetes is the industry standard for container orchestration. It is also complex, resource-heavy, and overkill for many workloads. If you are running a handful of services for a small-to-medium product, the operational overhead of Kubernetes — etcd clusters, control plane management, YAML sprawl, networking plugins, RBAC configuration — may cost more in engineering time than it saves.

Here are container orchestration options for teams that need to run containers reliably without the full Kubernetes overhead.

When Kubernetes Is Overkill

Kubernetes makes sense when you have:

If you have 3-15 services, a small team, and deploy to one or two environments, simpler tools will likely serve you better.

Docker Compose (with Swarm Mode)

Docker Compose is what most developers already use for local development. What many do not realize is that Docker includes Swarm mode for production orchestration using the same Compose files.

How Swarm Works

Docker Swarm turns a group of Docker hosts into a single virtual host. You deploy services using docker stack deploy with your existing docker-compose.yml file. Swarm handles:

Strengths

Limitations

Best for: Small teams already using Docker Compose that need basic production orchestration with minimal learning curve.

HashiCorp Nomad

Nomad is HashiCorp's workload orchestrator. It handles containers, VMs, binaries, and Java applications with a single tool. Unlike Kubernetes, which is containers-only, Nomad orchestrates anything.

Strengths

Example Job Spec

job "webapp" {
  datacenters = ["dc1"]
  type = "service"

  group "web" {
    count = 3

    network {
      port "http" { to = 8080 }
    }

    task "server" {
      driver = "docker"
      config {
        image = "myapp:latest"
        ports = ["http"]
      }
      resources {
        cpu    = 500
        memory = 256
      }
    }
  }
}

Limitations

Best for: Teams that run mixed workloads (not just containers) or want simpler orchestration with the flexibility to grow.

Kamal (by 37signals)

Kamal (formerly MRSK) is the deployment tool built by the team behind Basecamp and HEY. It deploys containerized applications to bare servers using SSH — no orchestrator needed.

How It Works

Kamal builds your Docker image, pushes it to a registry, then SSHs into your servers and runs the containers directly. It handles zero-downtime deployments using Traefik as a reverse proxy, switching traffic from old containers to new ones automatically.

Strengths

Limitations

Best for: Teams deploying web applications to VPS/bare-metal servers who want simple, reliable deployments without an orchestrator.

Docker Compose with Managed Hosting

Several platforms now offer managed container hosting using Docker Compose files directly:

Railway

Railway deploys applications from Git repositories with automatic container building. It handles scaling, networking, and persistence without requiring any orchestration knowledge.

Pricing: Pay-as-you-go based on resource usage. Hobby plan at $5/month.

Fly.io

Fly.io runs your containers on their global edge network. Deploy with a simple fly deploy command. According to the platform, it handles load balancing, TLS, and auto-scaling across regions.

Pricing: Free tier available. Pay-as-you-go for usage.

Render

Render deploys Docker containers with automatic scaling, managed databases, and built-in CI/CD. According to the company, it aims to be the simplicity of Heroku with modern infrastructure.

Pricing: Free tier for static sites. Service plans from $7/month.

Comparison

| Feature | Docker Swarm | Nomad | Kamal | Managed (Railway/Fly) | |---------|-------------|-------|-------|----------------------| | Setup complexity | Low | Medium | Low | Very low | | Learning curve | Very low | Low-Medium | Low | Very low | | Auto-scaling | Limited | Yes | No | Yes | | Multi-workload | Containers only | Any | Containers only | Containers only | | Managed option | No | HCP Nomad | No | Yes (by design) | | Cost | Infrastructure only | Infrastructure only | Infrastructure only | Pay-per-use | | Best scale | Small-Medium | Medium-Large | Small-Medium | Small-Medium |

Decision Guide

Choose Docker Swarm if:

Choose Nomad if:

Choose Kamal if:

Choose managed hosting if:

Choose Kubernetes if:

The Bottom Line

Kubernetes is not the only option, and for many teams it is not the best option. Docker Swarm gives you orchestration with near-zero learning curve. Nomad offers flexibility and simplicity with room to grow. Kamal provides dead-simple deploys to bare servers. Managed platforms eliminate infrastructure entirely. Match the tool to your actual requirements, not to what the largest tech companies use.