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Technology · head to head

Kubernetes vs Vault

Kubernetes logo

Kubernetes

Technology

Production-grade container orchestration

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: Kubernetes complex initial setup and configuration with multiple interdependent components; 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: Kubernetes covers Container orchestration, Vault covers Secrets management.

Where they differ

Only the attributes on which Kubernetes and Vault actually diverge.

Attributes where Kubernetes and Vault differ
AttributeKubernetesVault
Pricing modelUnknownopen-source
PlatformsLinux, Cloud (AWS, GCP, Azure)Linux, Windows, Mac, Cloud
CategoryTechnologyCloud
Founded20142015

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 Kubernetes

  • Container orchestration
  • Automatic scaling
  • Self-healing
  • Service discovery
  • Load balancing
  • Storage orchestration
  • Automated rollouts
  • Secret management

Only in Vault

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

Both cover

  • Docker
  • RBAC

What people use each for

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

Kubernetes

  • Microservices deploymentnot Vault
  • Cloud-native applicationsnot Vault
  • CI/CD pipelinesnot Vault
  • Multi-cloud deploymentsnot Vault
  • Edge computingnot Vault

Vault

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

Where each one falls short

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

Kubernetes

  • Complex initial setup and configuration with multiple interdependent components
  • Significant resource requirements for both hardware infrastructure and specialized human expertise
  • Expensive specialized talent in Kubernetes domain; hiring costs prohibitive for many organizations
  • New security challenges around container isolation and network security requiring robust measures
  • Requires continuous maintenance and updates to stay current with releases and security patches

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

Kubernetes

Free

No published plan breakdown. See the Kubernetes review.

Vault

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

Which should you pick?

Choose Kubernetes if

  • You need container orchestration.
  • You want to start without paying.
  • You work on Linux, Cloud (AWS, GCP, Azure).
  • You also want automatic scaling.
Kubernetes 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 Kubernetes or Vault better?
Neither clearly leads. Kubernetes 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, Kubernetes or Vault?
Kubernetes starts at Free and Vault at Free.
Does Kubernetes or Vault run on more platforms?
Kubernetes runs on Linux, Cloud (AWS, GCP, Azure). Vault runs on Linux, Windows, Mac, Cloud.
Can I use Kubernetes for free?
Both have a free tier, so you can try either at no cost before committing.
What is Kubernetes best used for?
Kubernetes is most often used for microservices deployment, cloud-native applications, ci/cd pipelines, multi-cloud deployments. Of those, microservices deployment and cloud-native applications are not what Vault is typically brought in for.
What can Kubernetes do that Vault cannot?
Kubernetes covers Container orchestration, Automatic scaling, Self-healing, Service discovery. Vault covers Secrets management, Encryption, Authentication, Authorization. Both handle Docker, RBAC.

Answered from the vendors’ own pages

Kubernetes: What is Kubernetes used for?

Kubernetes is a container orchestration platform that automates deployment, scaling, and management of containerized applications across clusters of machines.

Source
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
Kubernetes: Is Kubernetes free?

Yes, Kubernetes is free, open-source software maintained by the Cloud Native Computing Foundation. However, running Kubernetes clusters requires infrastructure investment.

Source
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
Kubernetes: How hard is it to learn Kubernetes?

Kubernetes has a steep learning curve. It requires deep knowledge of containerization, networking, and distributed systems. Teams without prior container experience should expect significant training time.

Source
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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