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Development Tools · head to head

Ansible vs Docker

Ansible logo

Ansible

Development Tools

Simple, agentless IT automation

From
Free
Rated
-
Full reviewWebsite
Docker logo

Docker

Technology

Accelerate how you build, share, and run applications

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Ansible the open source project gives the engine and the language; the automation controller, automation mesh, automation hub, analytics and governance all belong to the paid Red Hat Ansible Automation Platform; Docker shared kernel creates security vulnerabilities when containers share the same OS kernel that can bypass container isolation
  • They diverge on capability: Ansible covers Playbooks, Docker covers Container runtime.

Where they differ

Only the attributes on which Ansible and Docker actually diverge.

Attributes where Ansible and Docker differ
AttributeAnsibleDocker
Pricing modelopen-sourceUnknown
PlatformsLinux, Windows, Mac, ApiLinux, macOS, Windows
CategoryDevelopment ToolsTechnology
Founded20122010

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Ansible

  • Playbooks
  • Inventory management
  • Module library
  • Variables and templating
  • Handlers
  • Roles
  • Async tasks
  • Plugins

Only in Docker

  • Container runtime
  • Docker Desktop
  • Docker Hub
  • Docker Compose
  • Container images
  • Dockerfile
  • Docker Swarm
  • BuildKit

Both cover

  • AWS
  • Azure

What people use each for

The jobs each tool is most often brought in to do.

Ansible

  • Configuration managementnot Docker
  • Server provisioningnot Docker
  • Application deploymentnot Docker
  • Multi-node managementnot Docker
  • Orchestrationnot Docker

Docker

  • Application containerizationnot Ansible
  • Microservicesnot Ansible
  • CI/CD pipelinesnot Ansible
  • Development environmentsnot Ansible
  • Cloud migrationnot Ansible

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Ansible

  • The open source project gives the engine and the language; the automation controller, automation mesh, automation hub, analytics and governance all belong to the paid Red Hat Ansible Automation Platform
  • Event-Driven Ansible and the AI coding assistant are platform features rather than open source ones
  • Red Hat does not publish platform pricing
  • Running open source Ansible at scale means building the control plane the platform otherwise provides

Docker

  • Shared kernel creates security vulnerabilities when containers share the same OS kernel that can bypass container isolation
  • Daemon socket exposure grants full root access to the host if compromised
  • Requires careful secrets management - credentials embedded in images or environment variables are easily harvested by attackers
  • Resource management complexity - misbehaving or compromised containers can consume all resources causing denial of service
  • Orchestration complexity - Docker Swarm is less capable than Kubernetes, requiring external tools for production deployments

Pricing, plan by plan

Ansible

Free
  • Open SourceFree
    • Community edition
    • Unlimited nodes
    • Full functionality
  • Ansible Automation Platform$5000/year
    • Enterprise support
    • Ansible Tower
    • Advanced features

Docker

Free

No published plan breakdown. See the Docker review.

Which should you pick?

Choose Ansible if

  • You need playbooks.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Api.
  • You also want inventory management.
Ansible review

Choose Docker if

  • You need container runtime.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want docker desktop.
Docker review

Questions people ask

Is Ansible or Docker better?
Neither clearly leads. Ansible starts at Free and Docker at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Ansible or Docker?
Ansible starts at Free and Docker at Free.
Does Ansible or Docker run on more platforms?
Ansible runs on Linux, Windows, Mac, Api. Docker runs on Linux, macOS, Windows.
Can I use Ansible for free?
Both have a free tier, so you can try either at no cost before committing.
What is Ansible best used for?
Ansible is most often used for configuration management, server provisioning, application deployment, multi-node management. Of those, configuration management and server provisioning are not what Docker is typically brought in for.
What can Ansible do that Docker cannot?
Ansible covers Playbooks, Inventory management, Module library, Variables and templating. Docker covers Container runtime, Docker Desktop, Docker Hub, Docker Compose. Both handle AWS, Azure.

Answered from the vendors’ own pages

Docker: What is Docker pricing?

Docker offers a freemium model with Docker Personal free, Docker Pro at $11/user/month, Docker Team at $16/user/month, and Docker Business at $24/user/month. Each tier includes Docker Desktop, Docker Hub, and Docker Scout with different usage limits.

Source
Docker: Can I use Docker in production?

Yes. Docker is used extensively in production environments. However, for container orchestration at scale, Kubernetes is typically paired with Docker to automate deployment, scaling, and management across clusters.

Source
Docker: What are the main security concerns with Docker?

Key security risks include container breakout vulnerabilities through shared kernel exploits, daemon socket exposure that grants root access if compromised, weak isolation between containers, and credential leakage if secrets are embedded in images.

Source
Docker: Does Docker integrate with CI/CD systems?

Yes. Docker integrates with Jenkins, GitHub, and other CI/CD systems. The typical workflow involves GitHub repositories triggering automated builds in Jenkins, which prepare Dockerfiles and push images to Docker Hub for deployment.

Source
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