云原生-CKA笔记：学前准备

云原生-CKA笔记：学前准备

主要包括操作系统，docker，k8s资源，yaml语法等基础技能

OS/VM

  • Ubuntu
  • VirtualBox
  • Tencent Cloud
  • Aliyun

docker

按官方文档进行安装。

apt-get remove docker docker-engine docker.io containerd runc
apt-get update
apt-get install ca-certificates curl gnupg lsb-release
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
apt-get update
apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin

配置加速镜像

~ #/etc/docker/daemon.json
{
"registry-mirrors": ["https://xxxxxx.mirror.aliyuncs.com"]
}

Kubernets’ Resources

PODS, Deployments, Services…

  • kubectl api-resources 查看所有支持的k8s资源
  • kubectl api-versions 查看所有支持的k8s api版本
  • kubectl explain 查看具体资源的原语详情说明

主要的资源说明

  • Nodes,no
  • Namespaces,ns
  • Pods,po
  • Deployments,deploy
  • Daemonsets,ds
  • Jobs
  • CronJobs,cj
  • Services,svc
  • Ingresses,ing
  • ConfigMap,cm
  • Secrets
  • ServiceAccounts,sa
  • PersistentVolumeClaims,pvc
  • PersistentVolumes,pv
  • Roles; ClusterRoles
  • RoleBindings; ClusterRoleBindings
  • NetworkPolicies,netpol

YAML

参见百度、知乎。YAML语法介绍…

奇技淫巧

  • kubectl 自动补全 echo "source <(kubectl completion bash)" >> ~/.zshrc; source ~/.bashrc
  • 快速生成yaml基本框架，善用 --dry-run=client -o yaml避免手动敲太多
  • 查看API Resource YAML原语字段结构的说明，善用 kubectl explain [resource[.field]]

相关链接

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