crane | Tool for migrating Kubernetes workloads and their data

crane is a Go library. crane has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Migrating an application between Kubernetes clusters may be more nuanced than one would imagine. In an ideal situation, this would be as simple as applying the YAML manifests to the new cluster and adjusting DNS records to redirect external traffic, yet often there is more that is needed. Below are a few of the common concerns that need to be addressed:. Crane helps users do more than just handle a point in time migration of a workload, it is intended to help users adopt current best practices such as onboarding to GitOps by reconstructing redeployable YAML manifests from inspecting a running application. The project is the result of several years of experience performing large-scale production Kubernetes migrations and addressing the lessons learned. Crane follows the Unix philosophy of building small sharply focused tools that can be assembled in powerful ways. It is designed with transparency and ease-of-diagnostics in mind. It drives migration through a pipeline of non-destructive tasks that output results to disk so the operation can be easily audited and versioned without impacting live workloads. The tasks can be run repeatedly and will output consistent results given the same inputs without side-effects on the system at large.