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Networking · head to head

Consul vs Jaeger

Consul logo

Consul

Networking

Service discovery, networking, and security

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: Consul namespaces, admin partitions and other multi tenancy controls are Consul Enterprise only; Jaeger tracing is only as good as the instrumentation, and partial instrumentation produces misleading gaps
  • They diverge on capability: Consul covers Service discovery, Jaeger covers Distributed trace search.

Where they differ

Only the attributes on which Consul and Jaeger actually diverge.

Attributes where Consul and Jaeger differ
AttributeConsulJaeger
Pricing modelopen-sourceOpen source, no licence fee
PlatformsLinux, Windows, Mac, CloudLinux, Kubernetes, Docker
CategoryNetworkingCloud
Founded2014Unknown

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 Consul

  • Service discovery
  • Health checking
  • Key/value store
  • Multi-datacenter
  • DNS interface
  • Service mesh
  • Load balancing
  • Configuration management

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.

Consul

  • Service discovery and health checking across dynamic infrastructurenot Jaeger
  • Running a service mesh with mutual TLS between servicesnot Jaeger
  • Distributed key value configuration storage for applicationsnot Jaeger

Jaeger

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

Where each one falls short

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

Consul

  • Namespaces, admin partitions and other multi tenancy controls are Consul Enterprise only
  • Audit logging, OIDC authentication and FIPS 140-2 builds require Consul Enterprise, so compliance driven deployments cannot use the free edition
  • Automated backups, redundancy zones, read replicas and automated server upgrades are Enterprise only
  • Long Term Support releases are Enterprise only, so community users must upgrade to stay supported
  • Service mesh and advanced traffic management sit in the Premium Enterprise tier above Standard Enterprise
  • HashiCorp does not publish a Consul rate on its pricing page, which lists per resource prices for Terraform instead

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

Consul

Free
  • Open SourceFree
    • Service discovery
    • Health checking
    • KV store

Jaeger

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

Which should you pick?

Choose Consul if

  • You need service discovery.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Cloud.
  • You also want health checking.
Consul 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 Consul or Jaeger better?
Neither clearly leads. Consul 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, Consul or Jaeger?
Consul starts at Free and Jaeger at Free.
Does Consul or Jaeger run on more platforms?
Consul runs on Linux, Windows, Mac, Cloud. Jaeger runs on Linux, Kubernetes, Docker.
Can I use Consul for free?
Both have a free tier, so you can try either at no cost before committing.
What is Consul best used for?
Consul is most often used for service discovery and health checking across dynamic infrastructure, running a service mesh with mutual tls between services, distributed key value configuration storage for applications. Of those, service discovery and health checking across dynamic infrastructure and running a service mesh with mutual tls between services are not what Jaeger is typically brought in for.
What can Consul do that Jaeger cannot?
Consul covers Service discovery, Health checking, Key/value store, Multi-datacenter. Jaeger covers Distributed trace search, Dependency graph, Adaptive sampling, Pluggable storage.

Answered from the vendors’ own pages

Consul: How much does Consul cost?

Consul does not publish specific pricing. The open source Community edition is free. HashiCorp also offers a Consul Enterprise edition, but pricing details are not disclosed publicly and must be obtained by contacting HashiCorp sales.

Source
Jaeger: Is Jaeger free?

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

Consul: Is Consul open source?

Consul includes a free, open source Community edition. HashiCorp also offers a proprietary Enterprise edition for organizations requiring advanced features, but no public pricing is available for the Enterprise version.

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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