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Cloud · head to head

Terragrunt vs Jaeger

Terragrunt logo

Terragrunt

Cloud

The Open Source IaC Orchestrator Platform Teams Trust

From
Free
Rated
-
Full reviewWebsite
Jaeger logo

Jaeger

Cloud

Open-source end-to-end distributed tracing

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Terragrunt additional complexity layer on top of Terraform; Jaeger tracing is only as good as the instrumentation, and partial instrumentation produces misleading gaps
  • They diverge on capability: Terragrunt covers Infrastructure orchestration, Jaeger covers Distributed trace search.

Where they differ

Only the attributes on which Terragrunt and Jaeger actually diverge.

Attributes where Terragrunt and Jaeger differ
AttributeTerragruntJaeger
Pricing modelUnknownOpen source, no licence fee
PlatformsAWS, Azure, GCPLinux, Kubernetes, Docker

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

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 Terragrunt

  • Infrastructure orchestration
  • Run Queue
  • DRY configuration
  • Automated hooks
  • Infrastructure catalog
  • Least-privilege access

Only in Jaeger

  • Distributed trace search
  • Dependency graph
  • Adaptive sampling
  • Pluggable storage

What people use each for

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

Terragrunt

  • Organizing Terraform code across multiple environmentsnot Jaeger
  • Automating infrastructure deployment workflowsnot Jaeger
  • Implementing infrastructure as code templates for developer self-servicenot Jaeger

Jaeger

  • Finding which service in a request path causes the latencynot Terragrunt
  • Understanding real service dependencies rather than the diagram on the wikinot Terragrunt
  • Debugging failures that only appear under production traffic patternsnot Terragrunt

Where each one falls short

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

Terragrunt

  • Additional complexity layer on top of Terraform
  • Requires understanding of Terraform concepts
  • Paid tier pricing not clearly published

Jaeger

  • Tracing is only as good as the instrumentation, and partial instrumentation produces misleading gaps
  • Storage is the real operational cost: high-volume tracing on Elasticsearch or Cassandra is a cluster to run and pay for
  • Traces alone, without correlated metrics and logs, leave you switching between tools during an incident

Pricing, plan by plan

Terragrunt

Free
  • Open SourceFree
    • Terragrunt CLI - completely free
    • Community support
  • Terragrunt Scale FreeFree
    • Free CI/CD pipeline
    • Unlimited runs and resources
    • For up to 25 infrastructure units
  • Terragrunt Scale Paid$undefined/custom
    • Volume pricing for more than 25 infrastructure units
    • Enterprise support

Jaeger

Free
  • JaegerFree
    • Full functionality
    • No usage limits
    • Community support

Which should you pick?

Choose Terragrunt if

  • You need infrastructure orchestration.
  • You want to start without paying.
  • You work on AWS, Azure, GCP.
  • You also want run queue.
Terragrunt review

Choose Jaeger if

  • You need distributed trace search.
  • You want to start without paying.
  • You work on Linux, Kubernetes, Docker.
  • You also want dependency graph.
Jaeger review

Questions people ask

Is Terragrunt or Jaeger better?
Neither clearly leads. Terragrunt starts at Free and Jaeger at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Terragrunt or Jaeger?
Terragrunt starts at Free and Jaeger at Free.
Does Terragrunt or Jaeger run on more platforms?
Terragrunt runs on AWS, Azure, GCP. Jaeger runs on Linux, Kubernetes, Docker.
Can I use Terragrunt for free?
Both have a free tier, so you can try either at no cost before committing.
What is Terragrunt best used for?
Terragrunt is most often used for organizing terraform code across multiple environments, automating infrastructure deployment workflows, implementing infrastructure as code templates for developer self-service. Of those, organizing terraform code across multiple environments and automating infrastructure deployment workflows are not what Jaeger is typically brought in for.
What can Terragrunt do that Jaeger cannot?
Terragrunt covers Infrastructure orchestration, Run Queue, DRY configuration, Automated hooks. Jaeger covers Distributed trace search, Dependency graph, Adaptive sampling, Pluggable storage.

Answered from the vendors’ own pages

Terragrunt: Is Terragrunt free?

Yes, the Terragrunt CLI is completely free and open source. Terragrunt Scale offers a free tier for up to 25 infrastructure units.

Source
Jaeger: Is Jaeger free?

Yes, open source and CNCF-graduated. Costs are the storage backend you run.

Terragrunt: What is the difference between Terragrunt and Terraform?

Terragrunt is an orchestration layer on top of Terraform that handles state management, DRY principles, and deployment automation without replacing Terraform itself.

Source
Jaeger: Do I use Jaeger or OpenTelemetry?

Both, usually. Instrument with OpenTelemetry and use Jaeger to store and query the traces.

Jaeger: Does Jaeger handle metrics and logs?

No. It is a tracing system. Metrics and logs need Prometheus, Loki or an equivalent.

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