How to Run a Local Kubernetes Cluster Inside Docker on Ubuntu Using kind

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The open-source tool 'kind' (Kubernetes IN Docker) lets developers spin up a real, multi-node Kubernetes cluster on an Ubuntu workstation in roughly 30 seconds, with each node running as a Docker container. It requires only Docker Engine and kubectl to get started, and a single-node or multi-node cluster can be created and torn down using simple command-line instructions. A YAML config file allows users to define custom node roles and port mappings, enabling an ingress controller inside the cluster to be reached directly from the host machine. Locally built Docker images can be loaded straight into the cluster without needing a container registry, though the image pull policy must be set correctly to avoid ImagePullBackOff errors. Because kind clusters are ephemeral by design, all cluster state is lost if Docker restarts, making the tool well-suited for testing and CI environments rather than persistent workloads.

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ProgrammingDEV Community ·

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