MicroK8s vs K3s vs minikube 本地k8s学习环境快速搭建

有一段时间没好好整理k8s本地开发环境了，Kubernetes官方文档曾几何时已经支持中文语言切换且更新及时，感谢背后的开源社区协作者们。本文主要记录k8s本地开发环境快速搭建选型方案，毕竟现在公有云托管型Kubernetes越来越成熟，更重要的是怎么灵活运用云原生的理念提升基础架构管理水平。

2023年03月07日 - 初稿

阅读原文 - https://wsgzao.github.io/post/microk8s/

Kubernetes环境安装工具

k8s安装工具对比

Kubernetes官方维护的minikube
https://github.com/kubernetes/minikube

Rancher维护的k3s
https://github.com/rancher/k3s
https://github.com/k3s-io/k3s

Ubuntu母公司Canonical维护的 MicroK8s
https://github.com/ubuntu/micro

MicroK8s vs K3s vs minikube
https://microk8s.io/compare

本地学习环境

https://kubernetes.io/zh-cn/docs/tasks/tools/

kubectl
minikube
kubeadm

https://kind.sigs.k8s.io/docs/user/quick-start/

https://minikube.sigs.k8s.io/docs/start/

线上生产环境

https://kubernetes.io/zh-cn/docs/setup/production-environment/tools/

kubeadm
Kubespray

https://kubespray.io/

MicroK8s安装使用

https://microk8s.io/docs/install-macos

Install Homebrew

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

Download the MicroK8s installer
brew install ubuntu/microk8s/microk8s

Run the installer or switch the version of Kubernetes

microk8s install
microk8s install --channel=1.26
microk8s install --channel=1.24

Check the status while Kubernetes starts
microk8s status --wait-ready

microk8s status --wait-ready

microk8s is running
high-availability: no
  datastore master nodes: 127.0.0.1:19001
  datastore standby nodes: none
addons:
  enabled:
    ha-cluster           # (core) Configure high availability on the current node
    helm                 # (core) Helm - the package manager for Kubernetes
    helm3                # (core) Helm 3 - the package manager for Kubernetes
  disabled:
    cert-manager         # (core) Cloud native certificate management
    community            # (core) The community addons repository
    dashboard            # (core) The Kubernetes dashboard
    dns                  # (core) CoreDNS
    gpu                  # (core) Automatic enablement of Nvidia CUDA
    host-access          # (core) Allow Pods connecting to Host services smoothly
    hostpath-storage     # (core) Storage class; allocates storage from host directory
    ingress              # (core) Ingress controller for external access
    kube-ovn             # (core) An advanced network fabric for Kubernetes
    mayastor             # (core) OpenEBS MayaStor
    metallb              # (core) Loadbalancer for your Kubernetes cluster
    metrics-server       # (core) K8s Metrics Server for API access to service metrics
    minio                # (core) MinIO object storage
    observability        # (core) A lightweight observability stack for logs, traces and metrics
    prometheus           # (core) Prometheus operator for monitoring and logging
    rbac                 # (core) Role-Based Access Control for authorisation
    registry             # (core) Private image registry exposed on localhost:32000
    storage              # (core) Alias to hostpath-storage add-on, deprecated

Turn on the services you want

microk8s enable dashboard
microk8s enable dns
microk8s enable registry
microk8s enable community
microk8s enable istio

Addon istio was not found in any repository
To use the community maintained flavor enable the respective repository:

microk8s enable community

An error occurred when trying to execute 'sudo microk8s.enable istio' with 'multipass': returned exit code 1.

Try microk8s enable --help for a list of available services built in. The microk8s disable command turns off a service.

Start using Kubernetes!
microk8s kubectl get all --all-namespaces
Access the Kubernetes dashboard
microk8s dashboard-proxy
Start and stop Kubernetes
Kubernetes is a collection of system services that talk to each other all the time. If you don’t need them running in the background then you will save battery/resources by stopping them. the microk8s start and microk8s stop commands will do the work for you.