root@k8s-deploy:~# vim nginx.yaml
kind: Deployment
apiVersion: apps/v1       #可查詢它的api版本 kubectl explain deployment.apiVersion
metadata:               #定義pod元數(shù)據(jù)信息,可查詢它的下級(jí)子字段kubectl explain deployment.metadata
  labels:               #定義deployment控制器標(biāo)簽
    app: nginx-deployment-label  #標(biāo)簽名稱以鍵值形式定義，可以定義多個(gè)，這里標(biāo)簽是app值為nginx-deployment-label
  name: nginx-deployment   #deployment資源的名字
  namespace: myserver          #deployment所屬的namespace,默認(rèn)是defaule
spec:                   #定義Deployment中容器的詳細(xì)信息,可通過(guò)kubectl explain deployment.spec查詢
  replicas: 1           #定義創(chuàng)建出pod的副本數(shù)，默認(rèn)值是1個(gè)pod
  selector:             #定義標(biāo)簽選擇器，它跟上面的Deployment標(biāo)簽不是一回事，它是找下面template中定義的labels標(biāo)簽
    matchLabels:        #定義匹配的標(biāo)簽，必須要設(shè)置
      app: nginx-selector       #匹配的目標(biāo)標(biāo)簽，控制器會(huì)拿這個(gè)標(biāo)簽匹配下面的pod
  template:             #定義模板，用來(lái)描述需要?jiǎng)?chuàng)建的pod作用
    metadata:           #定義模板元數(shù)據(jù)
      labels:             #這個(gè)labels會(huì)繼承給這個(gè)yaml文件Deployment控制器創(chuàng)建的所有pod
        app: nginx-selector   #這個(gè)labels的key是app,值是nginx-selector,它會(huì)繼承給下面的pod，和上面matchLabels.app: nginx-selector一樣
    spec:                  #定義pod的詳細(xì)信息
      containers:          #定義pod中容器列表，可以定義多個(gè)pod
      - name: nginx-container     #容器名稱
        image: nginx:1.20       #容器鏡像
        imagePullPolicy: Always                       #鏡像拉取策略
        ports:                    #定義容器端口列表
        - containerPort: 80     #定義一個(gè)端口
          protocol: TCP           #定義協(xié)議
          name: http              #端口名稱
        - containerPort: 443
          protocol: TCP
          name: https
        env:                      #給容器傳遞環(huán)境變量
        - name: "password"        #變量名稱，必須引號(hào)引起來(lái)
          value: "123"            #上面變量的值
        - name: "age"
          value: "18"---
 
kind: Service
apiVersion: v1
metadata:
  name: nginx-service
  labels:
    app: nginx-service-label   #service資源的標(biāo)簽
  namespace: myserver          #所在的命名空間，與上面控制器必須在同一個(gè)命名空間
spec:
  type: NodePort          #service類型是NodePort  
  ports:                  #定義訪問(wèn)端口，一個(gè)service可以定義多個(gè)端口的映射關(guān)系
  - name: http            #定義協(xié)議名稱
    port: 80              #定義service端口，它可以和pod,node端口都不同，它是K8S中一個(gè)獨(dú)立子網(wǎng)
    protocol: TCP         #定義類型
    targetPort: 80        #目標(biāo)pod端口，當(dāng)訪問(wèn)宿主機(jī)30004端口時(shí)就會(huì)轉(zhuǎn)達(dá)到pod的80端口
    nodePort: 30004       #手動(dòng)指定node節(jié)點(diǎn)暴露的端口，如果沒(méi)有指定端口，那service會(huì)隨機(jī)分配一個(gè)端口
  - name: https
    port: 443
    protocol: TCP
    targetPort: 443
    nodePort: 30443
  selector:
    app: nginx-selector   #這個(gè)標(biāo)簽就是上面pod的標(biāo)簽，service通過(guò)這個(gè)標(biāo)簽來(lái)匹配對(duì)應(yīng)的pod

創(chuàng)建資源
# kubectl apply -f nginx.yaml
 
查看nginx pod已經(jīng)啟動(dòng)
root@k8s-deploy:~# kubectl get pod -A | grep nginx
myserver               nginx-deployment-766fc9dfdd-f488k            1/1     Running   0               8m11s
 
查看nginx-service已經(jīng)創(chuàng)建
root@k8s-deploy:~# kubectl get svc -A | grep nginx-service
default                nginx-service               NodePort    10.100.57.113   <none>        80:30004/TCP,443:30443/TCP   2m11s

root@k8s-deploy:~# vim tomcat.yaml
 
kind: Deployment
apiVersion: apps/v1
metadata:
  name: tomcat-deployment
  namespace: myserver
  labels:
    app: tomcat-deployment-label
spec:
  replicas: 1
  selector:
    matchLabels:
      app: tomcat-selector
  template:
    metadata:
      labels:
        app: tomcat-selector
    spec:
      containers:
      - name: tomcat-container
        image: tomcat:7.0.109-jdk8-openjdk
        imagePullPolicy: Always
        ports:
        - containerPort: 8080
          protocol: TCP
          name: http
        env:
        - name: "password"
          value: "123"
        - name: "age"
          value: "18"
 
---
kind: Service
apiVersion: v1
metadata:
  name: tomcat-serivce
  namespace: myserver
  labels:
    app: tomcat-service-label
spec:
  type: NodePort  #service有四種類型，默認(rèn)是cluser ip
  ports:
  - name: http
    port: 80
    protocol: TCP
    nodePort: 30005
    targetPort: 8080
  selector:
    app: tomcat-selector

root@k8s-deploy:~# kubectl apply -f tomcat.yaml

root@k8s-deploy:~# kubectl get pod -A | grep tomcat
myserver               tomcat-deployment-5576d59694-rv2sb           1/1     Running   0             7m16s
 
進(jìn)入容器
root@k8s-deploy:~# kubectl exec -it nginx-deployment-7d7bd78b5c-v9mjs bash -n myserver
root@tomcat-deployment-5576d59694-rv2sb:/usr/local/tomcat# cd webapps
root@tomcat-deployment-5576d59694-rv2sb:/usr/local/tomcat/webapps# mkdir myapp
root@tomcat-deployment-5576d59694-rv2sb:/usr/local/tomcat/webapps# echo "myapp web magedu n70" > myapp/index.jsp

root@k8s-deploy:~# kubectl get pod -A | grep nginx
myserver               nginx-deployment-766fc9dfdd-f488k            1/1     Running   0               8m11s
 
進(jìn)入nginx容器
root@k8s-deploy:~# kubectl exec -it nginx-deployment-766fc9dfdd-f488k bash -n myserver
root@nginx-deployment-766fc9dfdd-f488k:/etc/nginx# vim conf.d/default.conf

root@k8s-deploy:~# kubectl logs -f nginx-deployment-766fc9dfdd-nq4ck -n myserver
10.200.166.128 - - [18/Nov/2022:07:50:45 +0000] "GET /myapp/ HTTP/1.1" 200 21 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0" "-"
10.200.166.128 - - [18/Nov/2022:07:50:53 +0000] "GET /myapp/index.jsp HTTP/1.1" 200 21 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0" "-"
10.200.166.128 - - [18/Nov/2022:07:52:09 +0000] "GET /myapp/index.jsp HTTP/1.1" 200 21 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0" "-"
10.200.166.128 - - [18/Nov/2022:07:52:10 +0000] "GET /myapp/index.jsp HTTP/1.1" 200 21 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:106.0) Gecko/20100101 Firefox/106.0" "-"