kore-on

kore-on automates k8s installation tasks for on-premise. It also provides upgrade cluster and scale up/down worker nodes.

Features

• Deploys Single or Highly Available (HA) Kubernetes
• Upgrade Kubernetes cluster
• Add/Delete worker node
• Install harbor registry
• Install NFS server
• Air-Gap installation

Documentation

Documentation is in the /docs directory

Supported Linux Distributions

• Ubuntu 20.04
• CentOS/RHEL 8

Supported Components

• Core

  • kubernetes v1.20.6-v1.20.8, v1.21.0-v1.21.12, v1.22.1-v1.22.9, v1.23.1-v1.23.5
  • etcd v3.4.16
  • docker-compose v1.29.2
  • docker v19.03.15
  • containerd v1.4.3
  • crictl v1.19.0, v1.20.0, v1.21.0

• Network Plugin

  • calico v3.19.1, v3.20, v3.21, v3.22, v3.23

• Application

  • coredns v1.7.0, v1.8.0
  • haproxy v2.4.2
  • nfs-subdir-external-provisioner v4.0.2

• Registry

  • harbor v2.3.0
  • harbor proxy mirroring

Required packages

• Podman(container tools) - This is required, if not installed it will be installed automatically.

go-ansible

Go-ansible is a package for running ansible-playbook or ansible commands from Golang applications.

Getting Start

Kore-on은 On-premise 환경에서 Kubernetes cluster의 생성, worker node 추가/삭제, 클러스터 업그레이드, 클러스터 삭제 기능을 제공한다. 또한, Harbor registry와 NFS server를 함께 설치함으로 운영환경에서 즉시 사용할 수 있으며, 폐쇄망(Air-gap) 환경을 위해 압축파일(Harbor, system package)로 클러스터를 설치할 수 있는 기능을 제공한다. 대상 서버의 정보(IP, SSH key)등을 koreon.toml파일에 기술하고 간단히 koreonctl create 명령을 실행하면 간단히 설치된다.

Deploy kubernetes HA cluster using koreon

• Kore-on 명령어: koreonctl

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Documents

• See our documentation in the /docs repository, please find the index here.