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Cloud · head to head

Buildah vs Vault

Buildah logo

Buildah

Cloud

Build OCI container images without a daemon or a Dockerfile

From
Free
Rated
-
Full reviewWebsite
Vault logo

Vault

Cloud

Manage Secrets and Protect Sensitive Data

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Buildah linux only, with no native macOS or Windows support; Vault vault 1.15.0 and later is licensed under the Business Source License 1.1, not an OSI open source licence, with IBM Corporation as licensor
  • They diverge on capability: Buildah covers Daemonless builds, Vault covers Secrets management.

Where they differ

Only the attributes on which Buildah and Vault actually diverge.

Attributes where Buildah and Vault differ
AttributeBuildahVault
Pricing modelOpen source, no licence feeopen-source
PlatformsLinuxLinux, Windows, Mac, Cloud
FoundedUnknown2015

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 Buildah

  • Daemonless builds
  • Rootless
  • Dockerfile compatible
  • Scriptable builds

Only in Vault

  • Secrets management
  • Encryption
  • Authentication
  • Authorization
  • Audit logging
  • API access
  • High availability
  • Replication

What people use each for

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

Buildah

  • Building images in CI without a privileged Docker daemonnot Vault
  • Producing minimal images with tighter layer control than a Dockerfile givesnot Vault
  • Scripted image assembly where a Dockerfile is the wrong abstractionnot Vault

Vault

  • Centrally storing and rotating secrets, API keys and database credentialsnot Buildah
  • Issuing short-lived dynamic credentials to applications instead of static passwordsnot Buildah
  • Encryption as a service and PKI certificate issuancenot Buildah

Where each one falls short

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

Buildah

  • Linux only, with no native macOS or Windows support
  • Scriptable builds are powerful but less portable and less familiar than a Dockerfile
  • Narrow by design: it builds images and does not run them, so it needs Podman or another runtime alongside

Vault

  • Vault 1.15.0 and later is licensed under the Business Source License 1.1, not an OSI open source licence, with IBM Corporation as licensor
  • The Additional Use Grant forbids offering Vault to third parties on a hosted or embedded basis in a paid product that competes with IBM's paid versions of Vault
  • Each version only converts to MPL 2.0 four years after that version is published, and the Change Date is tracked per version
  • Replication, HSM support, namespaces, performance standby nodes, FIPS builds, control group authorisation, multi-factor authentication, secrets sync and lease count quotas all require a Vault Enterprise licence
  • A Vault Enterprise licence must be applied to the cluster before any Enterprise feature can be used

Pricing, plan by plan

Buildah

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

Vault

Free
  • Open SourceFree
    • Secrets management
    • Encryption as a service
    • Identity management
  • EnterpriseFree
    • Advanced features
    • Premium support
    • Dedicated updates

Which should you pick?

Choose Buildah if

  • You need daemonless builds.
  • You want to start without paying.
  • You work on Linux.
  • You also want rootless.
Buildah review

Choose Vault if

  • You need secrets management.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Cloud.
  • You also want encryption.
Vault review

Questions people ask

Is Buildah or Vault better?
Neither clearly leads. Buildah starts at Free and Vault at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Buildah or Vault?
Buildah starts at Free and Vault at Free.
Does Buildah or Vault run on more platforms?
Buildah runs on Linux. Vault runs on Linux, Windows, Mac, Cloud.
Can I use Buildah for free?
Both have a free tier, so you can try either at no cost before committing.
What is Buildah best used for?
Buildah is most often used for building images in ci without a privileged docker daemon, producing minimal images with tighter layer control than a dockerfile gives, scripted image assembly where a dockerfile is the wrong abstraction. Of those, building images in ci without a privileged docker daemon and producing minimal images with tighter layer control than a dockerfile gives are not what Vault is typically brought in for.
What can Buildah do that Vault cannot?
Buildah covers Daemonless builds, Rootless, Dockerfile compatible, Scriptable builds. Vault covers Secrets management, Encryption, Authentication, Authorization.

Answered from the vendors’ own pages

Buildah: Is Buildah free?

Yes, open source with no licence fee.

Vault: Is HashiCorp Vault free to use?

Yes, Vault is available as a free, open-source project. The community version includes secrets management, certificate generation and rotation, encryption services, and credential management. Vault Enterprise is a commercial offering with additional features.

Source
Buildah: Do I still need a Dockerfile?

No. Buildah reads Dockerfiles if you have them, but images can be built entirely from shell commands instead.

Vault: What are the differences between open-source Vault and Vault Enterprise?

Open-source Vault is free and self-hosted. Vault Enterprise includes additional features and commercial support. HashiCorp also offers Vault Dedicated on the HashiCorp Cloud Platform as a fully managed cloud option.

Source
Buildah: How is Buildah different from Podman?

Buildah builds images; Podman runs them. Podman actually embeds Buildah for its build command, and the two are designed to be used together.

Vault: Can I try HashiCorp Cloud Platform Vault without payment?

Yes, HashiCorp offers a free trial option for HCP Vault Dedicated. New users also receive a $500 credit to use across HashiCorp Cloud Platform services.

Source
Vault: What does Vault manage and protect?

Vault provides identity-based secrets management for users, machines, services, and AI agents. It automates authentication and authorization for access to secrets, passwords, certificates, encryption keys, and other sensitive data across your infrastructure.

Source
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