kubernetes/kubeadm
Kubeadm
kubeadm is a tool for initializing a minimum viable Kubernetes control plane and joining worker nodes to a secure cluster. It serves as a control plane orchestrator and cluster bootstrapper designed to automate the deployment and maintenance of the Kubernetes management layer.
The project provides lifecycle management utilities for upgrading cluster versions and resetting node states to restore hosts to a clean installation baseline. It handles the secure integration of new nodes through token-based joining and ensures availability during software transitions via phased version upgrading.
The system also covers node provisioning and administration, including the preparation of host prerequisites, node image customization, and multi-node task execution. It utilizes declarative configuration mapping to translate high-level files into the necessary flags and environment variables for orchestration binaries.
Features
- Control Plane Bootstrapping - Initializes a secure Kubernetes control plane to establish a minimum viable environment for a new cluster.
- Kubernetes Control Plane Orchestrators - Provides a comprehensive toolset for automating the deployment and maintenance of the Kubernetes management layer.
- Node Configuration Initialization - Configures the initial node state by generating security certificates and deploying core system components.
- Kubernetes Cluster Deployments - Initializes a minimum viable Kubernetes control plane and joins worker nodes to a secure cluster.
- Kubernetes Cluster Management - Initializes the primary control plane and minimum viable environment to start a new Kubernetes cluster.
- Lifecycle Orchestration - Handles cluster installations, version upgrades, and node state resets using declarative orchestration.
- Version Upgrades - Provides phased version upgrading of cluster components to maintain availability during software transitions.
- Kubernetes Node Provisioning - Prepares hosts with required prerequisites and load balancers based on specified topology configurations.
- Token-Based Bootstrapping - Authenticates new nodes using short-lived bootstrap tokens for secure cluster joining without manual credential exchange.
- Cluster Node Joins - Connects worker or control nodes to an existing cluster to expand compute and management capacity.
- Local Installation State Tracking - Tracks created files and directories to enable the complete reversal of installation changes during a cluster reset.
- Multi-Node Shell Executions - Executes repetitive installation workflows and upgrade scripts across multiple cluster nodes simultaneously.
- Topology-Aware Provisioning - Prepares infrastructure requirements and load balancer settings based on the number of control plane and worker nodes.
- Node State Resets - Resets node states and clears local configurations to remove previous cluster associations from a host.
- Cluster State Resets - Clears local changes made during initialization or joining to restore the host to a clean installation baseline.
- Cloud Native Security - Deploys production-ready Kubernetes clusters.
- Cluster Provisioning - Standard tool for bootstrapping Kubernetes clusters.
- Cloud Security - Deploys production-ready Kubernetes clusters.
