kubernetes Deployment 金丝雀发布

创建应用

depoly-demoapp-v10.yaml

apiVersion: v1
kind: Namespace
metadata:
    name: demoapp
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demoapp-deployment
  namespace: demoapp
spec:
  replicas: 3
  selector:
    matchLabels:
      app: demoapp
      controller: demoapp
  template:
    metadata:
      labels:
        app: demoapp
        controller: demoapp
    spec:
      containers:
      - name: demoapp
        image: ikubernetes/demoapp:v1.0
        ports:
        - containerPort: 80
          name: http
        resources:
          requests:
            memory: "256Mi"
            cpu: "50m"
          limits:
            memory: "256Mi"
            cpu: "50m"

demo-svc.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: demoapp-svc
  namespace: demoapp
spec:
  selector:
    app: demoapp
    controller: demoapp
  ports:
  - name: http
    port: 80
    targetPort: 80

创建demo v10资源

# kubectl apply -f depoly-demoapp-v10.yaml -f demo-svc.yaml

namespace/demoapp created
deployment.apps/demoapp-deployment created
service/demoapp-svc created

查看demo v10资源

# kubectl get deploy -n demoapp

NAME                 READY   UP-TO-DATE   AVAILABLE   AGE
demoapp-deployment   3/3     3            3           51s

查看 Deployment 滚动更新状态

# kubectl rollout status deploy/demoapp-deployment -n demoapp

deployment "demoapp-deployment" successfully rolled out

查看ReplicaSet

# kubectl get rs -n demoapp

NAME                           DESIRED   CURRENT   READY   AGE
demoapp-deployment-96994cd5f   3         3         3       108s

查看pod 标签

# kubectl get pods -n demoapp --show-labels

NAME                                 READY   STATUS    RESTARTS   AGE     LABELS
demoapp-deployment-96994cd5f-gwfh4   1/1     Running   0          2m10s   app=demoapp,controller=demoapp,pod-template-hash=96994cd5f
demoapp-deployment-96994cd5f-mmhsb   1/1     Running   0          2m10s   app=demoapp,controller=demoapp,pod-template-hash=96994cd5f
demoapp-deployment-96994cd5f-qrjw8   1/1     Running   0          2m10s   app=demoapp,controller=demoapp,pod-template-hash=96994cd5f

查看Deployment 修订历史

# kubectl rollout history deployment/demoap-depolyment -n demoapp

deployment.apps/demoappv10 
REVISION  CHANGE-CAUSE
1         <none>

Deployment 添加注解

# kubectl annotate deployment/demoapp-deployment kubernetes.io/change-cause="kubectl apply -f depoly-demoapp-v10.yaml" -n demoapp

deployment.apps/demoapp-deployment annotated

确认Deployment 添加注解

# kubectl rollout history deployment/demoapp-deployment -n demoapp

deployment.apps/demoapp-deployment 
REVISION  CHANGE-CAUSE
1         kubectl apply -f depoly-demoapp-v10.yaml

查看svc

# kubectl get svc -n demoapp

NAME          TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)   AGE
demoapp-svc   ClusterIP   10.100.95.59   <none>        80/TCP    5m16s

访问服务

# curl `kubectl get svc/demoapp-svc -n demoapp -o jsonpath="{.spec.clusterIP}"`:80

iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-mmhsb, ServerIP: 172.20.154.229!

金丝雀发布方法一

设置参数

# kubectl patch deployments/demoapp-deployment -p '{"spec": {"strategy":{"rollingUpdate":{"maxSurge": 1, "maxUnavailable":0}}}}' -n demoapp

deployment.apps/demoapp-deployment patched

更新应用并暂停

# kubectl set image deployment/demoapp-deployment demoapp=ikubernetes/demoapp:v1.1 -n demoapp && kubectl rollout pause deployments/demoapp-deployment -n demoapp

deployment.apps/demoapp-deployment image updated
deployment.apps/demoapp-deployment paused

查看更新状态

# kubectl rollout status deploy demoapp-deployment -n demoapp

Waiting for deployment "demoapp-deployment" rollout to finish: 1 out of 3 new replicas have been updated...

查看rs控制器

# kubectl get rs -n demoapp

NAME                            DESIRED   CURRENT   READY   AGE
demoapp-deployment-6f798c7578   1         1         1       112s
demoapp-deployment-96994cd5f    3         3         3       35m

查看pod

# kubectl get pod -n demoapp

NAME                                  READY   STATUS    RESTARTS   AGE
demoapp-deployment-6f798c7578-6vk69   1/1     Running   0          6m13s
demoapp-deployment-96994cd5f-gwfh4    1/1     Running   0          39m
demoapp-deployment-96994cd5f-mmhsb    1/1     Running   0          39m
demoapp-deployment-96994cd5f-qrjw8    1/1     Running   0          39m

查看deployment日志

# kubectl describe deployments -n demoapp

Name:                   demoapp-deployment
Namespace:              demoapp
CreationTimestamp:      Mon, 19 Jun 2023 16:19:48 +0800
Labels:                 <none>
Annotations:            deployment.kubernetes.io/revision: 2
                        kubernetes.io/change-cause: kubectl apply -f depoly-demoapp-v10.yaml
Selector:               app=demoapp,controller=demoapp
Replicas:               3 desired | 1 updated | 4 total | 4 available | 0 unavailable
StrategyType:           RollingUpdate
MinReadySeconds:        0
RollingUpdateStrategy:  0 max unavailable, 1 max surge
Pod Template:
  Labels:  app=demoapp
           controller=demoapp
  Containers:
   demoapp:
    Image:      ikubernetes/demoapp:v1.1
    Port:       80/TCP
    Host Port:  0/TCP
    Limits:
      cpu:     50m
      memory:  256Mi
    Requests:
      cpu:        50m
      memory:     256Mi
    Environment:  <none>
    Mounts:       <none>
  Volumes:        <none>
Conditions:
  Type           Status   Reason
  ----           ------   ------
  Available      True     MinimumReplicasAvailable
  Progressing    Unknown  DeploymentPaused
OldReplicaSets:  demoapp-deployment-96994cd5f (3/3 replicas created)
NewReplicaSet:   demoapp-deployment-6f798c7578 (1/1 replicas created)
Events:
  Type    Reason             Age    From                   Message
  ----    ------             ----   ----                   -------
  Normal  ScalingReplicaSet  36m    deployment-controller  Scaled up replica set demoapp-deployment-96994cd5f to 3
  Normal  ScalingReplicaSet  2m37s  deployment-controller  Scaled up replica set demoapp-deployment-6f798c7578 to 1

访问服务

# while sleep 1;do curl `kubectl get svc/demoapp-svc -n demoapp -o jsonpath="{.spec.clusterIP}"`:80;done

iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-qrjw8, ServerIP: 172.20.89.158!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-gwfh4, ServerIP: 172.20.44.194!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-6vk69, ServerIP: 172.20.154.220!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-mmhsb, ServerIP: 172.20.154.229!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-qrjw8, ServerIP: 172.20.89.158!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-gwfh4, ServerIP: 172.20.44.194!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-6vk69, ServerIP: 172.20.154.220!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-mmhsb, ServerIP: 172.20.154.229!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-qrjw8, ServerIP: 172.20.89.158!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-gwfh4, ServerIP: 172.20.44.194!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-6vk69, ServerIP: 172.20.154.220!

相关的Pod列表也能够显示出旧版本ReplicaSet的所有Pod副本仍在正常运行，而同时新版本ReplicaSet对象也有了一个Pod实例，相关Service对象能够在其就绪后将一定比例的客户端流量引入到该Pod之上。运行足够长的一段时间后，若确认新版本应用没有必须通过回滚才能解决的问题，随后即可使用kubectl rollout resume命令继续后续更新步骤，以完成滚动更新过程。

你不可以回滚处于暂停状态的 Deployment，除非先恢复其执行状态。

恢复deployment更新

# kubectl rollout resume deployments/demoapp-deployment -n demoapp

deployment.apps/demoapp-deployment resumed

查看 Deployment 滚动更新状态

# kubectl rollout status deploy/demoapp-deployment -n demoapp

deployment "demoapp-deployment" successfully rolled out

查看ReplicaSet

# kubectl get rs -n demoapp

NAME                            DESIRED   CURRENT   READY   AGE
demoapp-deployment-6f798c7578   3         3         3       14m
demoapp-deployment-96994cd5f    0         0         0       48m

查看pod

# kubectl get pod -n demoapp

NAME                                  READY   STATUS    RESTARTS   AGE
demoapp-deployment-6f798c7578-6vk69   1/1     Running   0          15m
demoapp-deployment-6f798c7578-hfxjz   1/1     Running   0          2m51s
demoapp-deployment-6f798c7578-v2gb8   1/1     Running   0          2m48s

访问服务

# while sleep 1;do curl `kubectl get svc/demoapp-svc -n demoapp -o jsonpath="{.spec.clusterIP}"`:80;done

iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-hfxjz, ServerIP: 172.20.89.156!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-6vk69, ServerIP: 172.20.154.220!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-v2gb8, ServerIP: 172.20.44.219!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-hfxjz, ServerIP: 172.20.89.156!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-6vk69, ServerIP: 172.20.154.220!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-v2gb8, ServerIP: 172.20.44.219!
iKubernetes demoapp v1.1 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-6f798c7578-hfxjz, ServerIP: 172.20.89.156!

更新Deployment 修订历史

# kubectl annotate deployment/demoapp-deployment kubernetes.io/change-cause="kubectl set image deployment/demoapp-deployment demoapp=ikubernetes/demoapp:v1.1 -n demoapp" -n demoapp

deployment.apps/demoapp-deployment annotated

查看 Deployment 修订历史

# kubectl rollout history deploy/demoapp-deployment -n demoapp

deployment.apps/demoapp-deployment 
REVISION  CHANGE-CAUSE
1         kubectl apply -f depoly-demoapp-v10.yaml
2         kubectl set image deployment/demoapp-deployment demoapp=ikubernetes/demoapp:v1.1 -n demoapp

版本回滚

回滚到上一个版本

# kubectl rollout undo deployment/demoapp-deployment -n demoapp

deployment.apps/demoapp-deployment rolled back

访问服务

# while sleep 1;do curl `kubectl get svc/demoapp-svc -n demoapp -o jsonpath="{.spec.clusterIP}"`:80;done

iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-ndntl, ServerIP: 172.20.89.162!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-grvn7, ServerIP: 172.20.44.220!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-tjn85, ServerIP: 172.20.154.217!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-ndntl, ServerIP: 172.20.89.162!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-grvn7, ServerIP: 172.20.44.220!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-tjn85, ServerIP: 172.20.154.217!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-ndntl, ServerIP: 172.20.89.162!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-grvn7, ServerIP: 172.20.44.220!
iKubernetes demoapp v1.0 !! ClientIP: 172.20.151.128, ServerName: demoapp-deployment-96994cd5f-tjn85, ServerIP: 172.20.154.217!

金丝雀发布方法二

depoly-demoapp-v11.yaml

apiVersion: v1
kind: Namespace
metadata:
    name: demoapp
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    version: v1.1
  name: demoapp-deployment
  namespace: demoapp
spec:
  replicas: 3
  selector:
    matchLabels:
      app: demoapp
      controller: demoapp
      version: v1.1
  template:
    metadata:
      labels:
        app: demoapp
        controller: demoapp
        version: v1.1
    spec:
      containers:
      - name: demoapp
        image: ikubernetes/demoapp:v1.0
        ports:
        - containerPort: 80
          name: http
        resources:
          requests:
            memory: "256Mi"
            cpu: "50m"
          limits:
            memory: "256Mi"
            cpu: "50m"

创建demo v11资源

# kubectl apply -f depoly-demoapp-v11.yaml

访问demo 资源

此时demo服务 v10和v11版本共存

更新demo-svc.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: demoapp-svc
  namespace: demoapp
spec:
  selector:
    app: demoapp
    controller: demoapp
    version: v1.1
  ports:
  - name: http
    port: 80
    targetPort: 80

更新demo-svc资源

# kubectl apply -f demo-svc.yaml

访问demo服务

此时demo-svc只能匹配到v11版本

清理旧版本

# kubectl delete -f depoly-demoapp-v10.yaml

参考文档

https://kubernetes.io/zh-cn/docs/concepts/cluster-administration/manage-deployment/#canary-deployments

posted @ 2023-06-19 17:18 小吉猫阅读(106) 评论(0) 编辑收藏举报

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小吉猫

kubernetes Deployment 金丝雀发布

创建应用

depoly-demoapp-v10.yaml

demo-svc.yaml

创建demo v10资源

查看demo v10资源

查看 Deployment 滚动更新状态

查看ReplicaSet

查看pod 标签

查看Deployment 修订历史

Deployment 添加注解

确认Deployment 添加注解

查看svc

访问服务

金丝雀发布 方法一

设置参数

更新应用并暂停

查看更新状态

查看rs控制器

查看pod

查看deployment日志

访问服务

恢复deployment更新

查看 Deployment 滚动更新状态

查看ReplicaSet

查看pod

访问服务

更新Deployment 修订历史

查看 Deployment 修订历史

版本回滚

回滚到上一个版本

访问服务

金丝雀发布 方法二

depoly-demoapp-v11.yaml

创建demo v11资源

访问demo 资源

更新demo-svc.yaml

更新demo-svc资源

访问demo服务

清理旧版本

参考文档

公告

金丝雀发布方法一

金丝雀发布方法二