Jenkins X
By the Jenkins X community
Jenkins X is an open-source CI/CD platform for Kubernetes that automates building, testing, and deploying cloud-native applications using GitOps and preview environments, built on top of Tekton pipelines.
Definition
Jenkins X is an open-source CI/CD platform for Kubernetes that automates building, testing, and deploying cloud-native applications using GitOps and preview environments, built on top of Tekton pipelines.
Overview
Despite the name, Jenkins X is not the classic Jenkins server reimagined for Kubernetes — it is a distinct project that uses Tekton as its pipeline execution engine and wraps it with an opinionated, cloud-native developer workflow. A `jx` command-line tool bootstraps a cluster with everything needed for automated pipelines: source webhooks, container registries, and a GitOps-driven promotion process that moves application versions from staging to production through pull requests against environment repositories rather than manual deploy commands. One of Jenkins X's most distinctive features is automatic preview environments: every pull request against an application repository can spin up a fully isolated, ephemeral deployment of that change, giving reviewers a live environment to click through before merging, and tearing the environment down automatically once the PR closes. This tight feedback loop is aimed squarely at teams practicing trunk-based development and continuous deployment on Kubernetes. Jenkins X's philosophy — everything as code, environments as Git repositories, deployments as pull requests — places it firmly in the GitOps camp alongside tools like Argo CD and Flux, but Jenkins X additionally owns the build and pipeline orchestration layer via Tekton rather than assuming pipelines are handled elsewhere. This makes it heavier and more opinionated than pairing a general-purpose CI tool like Buildkite with a separate GitOps deployment tool, but it offers a more integrated, batteries-included experience for teams starting fresh on Kubernetes-native CI/CD.
Key Features
- Built on Tekton for Kubernetes-native pipeline execution
- GitOps-based promotion of releases through pull requests to environment repos
- Automatic, ephemeral preview environments for every pull request
- jx CLI for bootstrapping and managing the full CI/CD platform
- Automated versioning and changelog generation for releases
- Built-in integration with container registries and Helm chart repositories
- Environment promotion pipelines from staging through to production
- Designed around trunk-based development and continuous deployment