Kubernetes - POD YAML작성

요약

Kubernetes 기초

Kubernetes 큰 주제 아래에서 세부 개념과 실습 절차를 연결하기 위한 노트입니다.

핵심 포인트

• Kubernetes 기초
• 파드 yaml 디스크립션 작성
• kuberctl 기본 pod yaml파일
• 연습 문제 겸 POD작성 연습
• 문제 내용

지식 그래프

• Knowledge Base
• Kubernetes

정리 내용

파드 yaml 디스크립션 작성

kuberctl 기본 pod yaml파일

kubectl explain pods

KIND:     Pod
VERSION:  v1
 
DESCRIPTION:
     Pod is a collection of containers that can run on a host. This resource is
     created by clients and scheduled onto hosts.
 
FIELDS:
   apiVersion   <string>
     APIVersion defines the versioned schema of this representation of an
     object. Servers should convert recognized schemas to the latest internal
     value, and may reject unrecognized values. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
 
   kind <string>
     Kind is a string value representing the REST resource this object
     represents. Servers may infer this from the endpoint the client submits
     requests to. Cannot be updated. In CamelCase. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
 
   metadata     <Object>
     Standard object's metadata. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
 
   spec <Object>
     Specification of the desired behavior of the pod. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
 
   status       <Object>
     Most recently observed status of the pod. This data may not be up to date.
     Populated by the system. Read-only. More info:
     https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status

연습 문제 겸 POD작성 연습

문제 내용

• 모든 리소스 삭제
• Yaml 사용하여 docker images jenkins 로 jenkins-manual pod 생성하기
• jenkins pod에서 curl 명령어로 localhost:8080 접속하기
• jenkins pod 8888포트 포워딩하기
• 현재 jenkinss-manual 설정 yaml로 출력하기

모든 리소스 삭제

kubectl delete svc --all
kubectl delete deploy --all
kubectl delete pod --all

Yaml 사용하여 docker images jenkins 로 jenkins-manual pod 생성하기

apiVersion: v1
kind: Pod
metadata:
  name: pod-practice
spec:
  containers:
  - name: jenkins-manuale
    image: jenkins/jenkins:lts-jdk11
    ports:
    -  containerPort: 8080

k create -f jenkins-manual.yaml

jenkins pod에서 curl 명령어로 localhost:8080 접속하기

kubectl exec pod이름  -- curl localhost:8080 -s

jenkins pod 8888포트 포워딩하기

kubectl port-forward pod이름 8888:8080

현재 jenkinss-manual 설정 yaml로 출력하기

kubectl get pod pod이름 -o yaml

kubectl YAML 주석 달기

kubectl annotate pod 파드이름 test123=test123

출처

• 원문: https://www.notion.so/Kubernetes-POD-YAML-245172a556d6800096b0fd551293af27
• Vault path: wiki/notes/kubernetes/Kubernetes---POD-YAML작성.md