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发布策略（扩展）（仅收藏）

发布策略​

image-20230921083321559

目录​

[toc]

滚动更新​

apiVersion: apps/v1beta2
kind: Deployment
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  strategy: 
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1    ## 最多1个pod处于不可工作状态
      maxSurge: 2					 ## 升级时可以比预期多出2个pod
  minReadySeconds: 5       ## 容器启动后等待5秒

蓝绿发布​

创建新的部署，然后修改service的标签来将流量指向新的部署。

[root@master b-g]# kubectl get pod
NAME                                    READY   STATUS    RESTARTS   AGE
nginxapp-1.19-bdb8dc6c4-2jfsw           1/1     Running   0          12m
nginxapp-1.19-bdb8dc6c4-79qrh           1/1     Running   0          12m
nginxapp-1.19-bdb8dc6c4-hbwkx           1/1     Running   0          12m
nginxapp-1.20-786464458-4zh5t           1/1     Running   0          91s
nginxapp-1.20-786464458-5bfwq           1/1     Running   0          91s
nginxapp-1.20-786464458-fwgxb           1/1     Running   0          91s

v1.1.4-blue.yaml

kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: devops4-ops-service
    version: "1.1.4"
  name: devops4-ops-service-blue
  namespace: devops4
spec:
  replicas: 3
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: devops4-ops-service
      version: "1.1.4"
  template:
    metadata:
      labels:
        k8s-app: devops4-ops-service
        version: "1.1.4"
      namespace: devops4
      name: devops4-ops-service
    spec:
      containers:
        - name: devops4-ops-service
          image: 192.168.1.200:8088/devops4/devops4-ops-service:RELEASE-1.1.4-c6b176ad
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 8080
              name: web
              protocol: TCP
      serviceAccountName: devops4-ops-service
---
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service

service.yaml

apiVersion: v1
kind: Namespace
metadata:
  name: devops4
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  namespace: devops4
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - pathType: Prefix
        path: "/"
        backend:
          service:
            name: devops4-ops-service
            port:
              number: 8080
---
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service
  namespace: devops4
spec:
  type: ClusterIP
  ports:
    - name: web
      port: 8080
      targetPort: 8080
  selector:
    k8s-app: devops4-ops-service
    version: "1.1.4"

v1.1.5-green.yaml

kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: devops4-ops-service
    version: "1.1.5"
  name: devops4-ops-service-green
  namespace: devops4
spec:
  replicas: 3
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: devops4-ops-service
      version: "1.1.5"
  template:
    metadata:
      labels:
        k8s-app: devops4-ops-service
        version: "1.1.5"
      namespace: devops4
      name: devops4-ops-service
    spec:
      containers:
        - name: devops4-ops-service
          image: 192.168.1.200:8088/devops4/devops4-ops-service:RELEASE-1.1.5-bc630338
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 8080
              name: web
              protocol: TCP
      serviceAccountName: devops4-ops-service
---
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service

启动busybox容器调试(废弃)

kubectl run --restart=Never -it --image \
       infoblox/dnstools dnstools

修改流量（service)

kubectl patch svc devops4-ops-service -p '{"spec":{"selector":{"version": "1.1.5"}}}' -n devops4

测试验证

curl http://devops4.ops.service/hello

灰度发布​

https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/#canary

1.1.4

apiVersion: v1
kind: Namespace
metadata:
  name: devops4
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress-1-4
  namespace: devops4
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - pathType: Prefix
        path: "/"
        backend:
          service:
            name: devops4-ops-service-1-4
            port:
              number: 8080
---
kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service-1-4
  namespace: devops4
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: devops4-ops-service
  template:
    metadata:
      labels:
        k8s-app: devops4-ops-service
      namespace: devops4
      name: devops4-ops-service
    spec:
      containers:
        - name: devops4-ops-service
          image: 192.168.1.200:8088/devops4/devops4-ops-service:RELEASE-1.1.4-c6b176ad
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 8080
              name: web
              protocol: TCP
      serviceAccountName: devops4-ops-service
---
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service
  namespace: devops4
---
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service-1-4
  namespace: devops4
spec:
  type: ClusterIP
  ports:
    - name: web
      port: 8080
      targetPort: 8080
  selector:
    k8s-app: devops4-ops-service

1.1.5

apiVersion: v1
kind: Namespace
metadata:
  name: devops5
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  namespace: devops5
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-by-cookie: "from"
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - pathType: Prefix
        path: "/"
        backend:
          service:
            name: devops4-ops-service-1-5
            port:
              number: 8080
---
kind: Deployment
apiVersion: apps/v1
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service
  namespace: devops5
spec:
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: devops4-ops-service
  template:
    metadata:
      labels:
        k8s-app: devops4-ops-service
      namespace: devops5
      name: devops4-ops-service
    spec:
      containers:
        - name: devops4-ops-service
          image: 192.168.1.200:8088/devops4/devops4-ops-service:RELEASE-1.1.5-bc630338
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 8080
              name: web
              protocol: TCP
      serviceAccountName: devops4-ops-service
---
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service
  namespace: devops5
---
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: devops4-ops-service
  name: devops4-ops-service-1-5
  namespace: devops5
spec:
  type: ClusterIP
  ports:
    - name: web
      port: 8080
      targetPort: 8080
  selector:
    k8s-app: devops4-ops-service

创建资源：

[root@zeyang-nuc-service canary]# kubectl get all -n devops4
NAME                                           READY   STATUS    RESTARTS   AGE
pod/devops4-ops-service-1-4-7f97cb665c-vcntl   1/1     Running   0          16m

NAME                              TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)    AGE
service/devops4-ops-service-1-4   ClusterIP   10.96.65.65   <none>        8080/TCP   16m

NAME                                      READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/devops4-ops-service-1-4   1/1     1            1           16m

NAME                                                 DESIRED   CURRENT   READY   AGE
replicaset.apps/devops4-ops-service-1-4-7f97cb665c   1         1         1       16m


[root@zeyang-nuc-service canary]# kubectl get all -n devops5
NAME                                       READY   STATUS    RESTARTS   AGE
pod/devops4-ops-service-5fbfb57777-6hc62   1/1     Running   0          15m

NAME                              TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)    AGE
service/devops4-ops-service-1-5   ClusterIP   10.96.64.251   <none>        8080/TCP   15m

NAME                                  READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/devops4-ops-service   1/1     1            1           15m

NAME                                             DESIRED   CURRENT   READY   AGE
replicaset.apps/devops4-ops-service-5fbfb57777   1         1         1       15m

测试：

## 编辑hosts文件
192.168.10.100 devops4.ops.service

for i in {1..10};do curl devops4.ops.service/hello ;done

基于权重的发布​

<1.19.0

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: example-ingress
  namespace: devops4
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-weight: "10"
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - path: /
        backend:
          serviceName: devops4-ops-service
          servicePort: 8080

>1.19.0

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  namespace: devops4
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-weight: "10"
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - pathType: Prefix
        path: "/"
        backend:
          service:
            name: devops4-ops-service
            port:
              number: 8080

Header报头流量分发​

<1.19.0

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: example-ingress
  namespace: devops4
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-by-header: "Region"
    nginx.ingress.kubernetes.io/canary-by-header-value: "bj"
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - path: /
        backend:
          serviceName: devops4-ops-service
          servicePort: 8080

>1.19.0

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  namespace: devops4
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-by-header: "Region"
    nginx.ingress.kubernetes.io/canary-by-header-value: "bj"
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - pathType: Prefix
        path: "/"
        backend:
          service:
            name: devops4-ops-service
            port:
              number: 8080
for i in {1..10};do curl -H "region: bj" devops4.ops.service/hello;done

根据cookie流量分发​

<1.19.0

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: example-ingress
  namespace: devops4
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-by-cookie: "from"
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - path: /
        backend:
          serviceName: devops4-ops-service
          servicePort: 8080

>1.19.0

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  namespace: devops4
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/canary: "true"
    nginx.ingress.kubernetes.io/canary-by-cookie: "from"
spec:
  rules:
  - host: devops4.ops.service
    http:
      paths:
      - pathType: Prefix
        path: "/"
        backend:
          service:
            name: devops4-ops-service
            port:
              number: 8080
[root@master ingress-gray]# curl devops4.ops.service/hello --cookie "from=always"
1.1.5
[root@master ingress-gray]# curl devops4.ops.service/hello --cookie "from=a"
1.1.4
[root@master ingress-gray]# curl devops4.ops.service/hello --cookie "from=a"
1.1.4

关于我​

我的博客主旨：

  • 排版美观，语言精炼；
  • 文档即手册，步骤明细，拒绝埋坑，提供源码；
  • 本人实战文档都是亲测成功的，各位小伙伴在实际操作过程中如有什么疑问，可随时联系本人帮您解决问题，让我们一起进步！

🍀 微信二维码 x2675263825 （舍得）， qq：2675263825。

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🍀 微信公众号 《云原生架构师实战》

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🍀 个人博客站点

http://47.97.48.237/ （即将上线域名：onedayxyy.cn）

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🍀 语雀

https://www.yuque.com/xyy-onlyone

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🍀 csdn https://blog.csdn.net/weixin_39246554?spm=1010.2135.3001.5421

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🍀 知乎 https://www.zhihu.com/people/foryouone

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最后​

好了，关于本次就到这里了，感谢大家阅读，最后祝大家生活快乐，每天都过的有意义哦，我们下期见！

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