Developer Tools · head to head
Keycloak vs Rook
Keycloak
Developer Tools
Open-source identity and access management server.
- From
- Free
- Free plan
- Yes
Rook
Cloud
Kubernetes operator that deploys and manages Ceph storage clusters
- From
- Free
- Free plan
- Yes
The short version
- Each has a real cost: Keycloak requires self-hosted deployment and operational expertise to install, configure and maintain; Rook rook automates Ceph but does not abstract it, so an incident still demands Ceph expertise, and organisations without it end up hiring consultants at exactly the wrong moment.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Keycloak and Rook actually diverge.
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 Keycloak
Nothing recorded that Rook does not also cover.
Only in Rook
- Ceph operator
- Block, file and object
- Erasure coding
- CSI driver
- Automated upgrades
- Multi-cluster mirroring
What people use each for
The jobs each tool is most often brought in to do.
Keycloak
- Organisations requiring self-hosted identity infrastructure for compliance or data residencynot Rook
- Companies with existing LDAP/Active Directory systems needing federated authenticationnot Rook
- Open-source projects and communities requiring free IAM without licensing costsnot Rook
- Enterprises building custom identity workflows requiring fine-grained authorisationnot Rook
- Teams with sufficient operational expertise to manage infrastructurenot Rook
Rook
- An on-premises Kubernetes platform needing block, shared filesystem and S3 storage without buying three productsnot Keycloak
- A team that already runs Ceph and wants its lifecycle managed declaratively inside Kubernetesnot Keycloak
- A large cluster where three-way replication overhead is unaffordable and erasure coding is requirednot Keycloak
- An organisation building a private cloud that cannot use managed cloud storage services for residency reasonsnot Keycloak
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Keycloak
- Requires self-hosted deployment and operational expertise to install, configure and maintain
- No managed cloud option provided by Red Hat; organisations must operate infrastructure themselves or use third-party distributions
- Clustering and high-availability configurations require additional operational knowledge
- Community support only; commercial support requires third-party vendors or distributions
Rook
- Rook automates Ceph but does not abstract it, so an incident still demands Ceph expertise, and organisations without it end up hiring consultants at exactly the wrong moment.
- There is no vendor and no SLA; the realistic commercial support routes are IBM Red Hat OpenShift Data Foundation or an independent Ceph consultancy, both of which change the cost picture entirely.
- Ceph is resource hungry, needing substantial memory and dedicated disks per OSD, so the hardware cost of a properly sized cluster is often underestimated.
- Recovery and rebalancing after a disk or node failure generates heavy background input and output that can degrade application performance for hours, which surprises teams sizing for steady state.
- Minimum viable clusters require several nodes with several disks each, so it is impractical at small scale and the entry hardware cost exceeds simpler alternatives.
Pricing, plan by plan
Keycloak
Free- Open-sourceFree
- Full platform functionality
- Self-hosted deployment
- Community support
Rook
Free- RookFree
- Apache 2.0 licensed, no licence fee
- Graduated CNCF project
- Community support via GitHub and Slack only
Which should you pick?
Choose Keycloak if
- You want to start without paying.
- You work on Self-hosted, Docker, Kubernetes, Linux, Windows, API.
Choose Rook if
- You need ceph operator.
- You want to start without paying.
- You work on Linux, Kubernetes.
- You also want block, file and object.
Questions people ask
- Is Keycloak or Rook better?
- Neither clearly leads. Keycloak starts at Free and Rook at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Keycloak or Rook?
- Keycloak starts at Free and Rook at Free.
- Does Keycloak or Rook run on more platforms?
- Keycloak runs on Self-hosted, Docker, Kubernetes, Linux, Windows, API. Rook runs on Linux, Kubernetes.
- Can I use Keycloak for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Keycloak best used for?
- Keycloak is most often used for organisations requiring self-hosted identity infrastructure for compliance or data residency, companies with existing ldap/active directory systems needing federated authentication, open-source projects and communities requiring free iam without licensing costs, enterprises building custom identity workflows requiring fine-grained authorisation. Of those, organisations requiring self-hosted identity infrastructure for compliance or data residency and companies with existing ldap/active directory systems needing federated authentication are not what Rook is typically brought in for.
- What can Keycloak do that Rook cannot?
- Rook covers Ceph operator, Block, file and object, Erasure coding, CSI driver.
Answered from the vendors’ own pages
Keycloak: What protocols does Keycloak support?
Keycloak supports OpenID Connect, OAuth 2.0 and SAML 2.0 protocols for authentication and authorisation.
SourceRook: Who supports it in production?
Nobody by default. IBM sells Red Hat OpenShift Data Foundation, which is supported Rook and Ceph, and independent consultancies sell Ceph support. Decide this before deployment.
Keycloak: Can Keycloak integrate with existing user directories?
Yes. Keycloak supports user federation with LDAP and Active Directory systems, allowing organisations to leverage existing user directories.
SourceRook: Does it need Ceph knowledge?
Yes. Rook handles deployment and routine operations, but troubleshooting a degraded cluster is a Ceph skill and there is no way around it.
Keycloak: Is Keycloak free?
Yes. Keycloak is fully open-source and free to deploy and use. No licensing fees are required.
SourceRook: Can it replace an object storage appliance?
Functionally yes, through the RADOS gateway, but you take on the operations that an appliance vendor would otherwise carry.
Related pages
Other head to heads
- Keycloak vs Penpot
- Keycloak vs Soketi
- Keycloak vs Ansible
- Keycloak vs Atlantis
- Keycloak vs Vite
- Keycloak vs Depot
- Keycloak vs Pants Build
- Keycloak vs Buildkite
- Keycloak vs Coder
- Keycloak vs Jitsu
- Keycloak vs Bitbucket
- Keycloak vs Sweep
- Keycloak vs Azure DevOps
- Keycloak vs Backstage
- Keycloak vs Claude Code
- Keycloak vs Cloud Native Buildpacks
- Keycloak vs Cody
- Keycloak vs OpenEBS
- Keycloak vs Qovery
- Keycloak vs Coolify
- Keycloak vs Portworx
- Keycloak vs Vultr
- Keycloak vs Dokku
- Keycloak vs Scaleway
- Keycloak vs SST
- Keycloak vs AWS (Amazon Web Services)
- Keycloak vs Neon
- Keycloak vs Wasabi
- Keycloak vs Podman
- Keycloak vs Azure Functions
- Keycloak vs Deno Deploy
- Keycloak vs Hetzner Cloud
- Keycloak vs Infracost
- Keycloak vs Lambda
- Keycloak vs Linode
- Rook vs Penpot
- Rook vs Soketi
- Rook vs Ansible
- Rook vs Atlantis
- Rook vs Vite
- Rook vs Depot
- Rook vs Pants Build
- Rook vs Buildkite
- Rook vs Coder
- Rook vs Jitsu
- Rook vs Bitbucket
- Rook vs Sweep
- Rook vs Azure DevOps
- Rook vs Backstage
- Rook vs Claude Code
- Rook vs Cloud Native Buildpacks
- Rook vs Cody
- Rook vs OpenEBS
- Rook vs Qovery
- Rook vs Coolify
- Rook vs Portworx
- Rook vs Vultr
- Rook vs Dokku
- Rook vs Scaleway
- Rook vs SST
- Rook vs AWS (Amazon Web Services)
- Rook vs Neon
- Rook vs Wasabi
- Rook vs Podman
- Rook vs Azure Functions
- Rook vs Deno Deploy
- Rook vs Hetzner Cloud
- Rook vs Infracost
- Rook vs Lambda
- Rook vs Linode