k8s：py项目发布完整流程

k8s：py项目发布流程

1. 编写Dockerfile

# cat Dockerfile FROM python:3.6-slimUSER rootRUN apt-get update && apt-get install gcc -y && \ apt-get clean && \ rm -rf /var/lib/apt/lists/*ADD . /appWORKDIR /appRUN pip install -r requirement.txtEXPOSE 8000CMD [ "uvicorn", "main:app","--host", "0.0.0.0", "--port", "8000" ]

2. 验证Docker镜像

3. 编写Pod资源清单

要学会借鉴官网！！！，演示一遍

首先要问清楚业务是有状态还是无状态，无状态就选deployment，有状态就选statefulset。我这里是个小程序，无状态应用。

Kubernetes版本变化很快，搞k8s一定要学会看官网。

官方案例

apiVersion: apps/v1kind: Deploymentmetadata: name: nginx-deployment labels: app: nginxspec: replicas: 3 selector: matchLabels:  app: nginx template: metadata:  labels:  app: nginx spec:  containers:  - name: nginx  image: nginx:1.14.2  ports:  - containerPort: 80

改：是要标签对的上就OK了

###########################################################################Author:      zisefeizhu#QQ:       2********0#Date:      2020-06-16#FileName:     delpoyment.yaml#URL:      https://www.cnblogs.com/zisefeizhu/#Description:    The test script#Copyright (C):    2020 All rights reserved###########################################################################apiVersion: apps/v1kind: Deploymentmetadata: name: businesscard-deploymentspec: selector: matchLabels:  app: businesscard replicas: 2 # tells deployment to run 2 pods matching the template template: metadata:  labels:  app: businesscard spec:  imagePullSecrets:  - name: business-card  containers:  - name: businesscard  imagePullPolicy: "IfNotPresent"  image: xxxxxx/business-card:v1   ports:  - containerPort: 8000

4. 编写Service清单

官方案例

apiVersion: v1kind: Servicemetadata: name: my-servicespec: selector: app: MyApp ports: - protocol: TCP  port: 80  targetPort: 9376

改：标签对的上就OK!

cat service.yaml ###########################################################################Author:      zisefeizhu#QQ:       2********0#Date:      2020-06-16#FileName:     service.yaml#URL:      https://www.cnblogs.com/zisefeizhu/#Description:    The test script#Copyright (C):    2020 All rights reserved###########################################################################apiVersion: v1kind: Servicemetadata: name: businesscardspec: #type: NodePort selector: app: businesscard ports: - protocol: TCP  port: 8000

5. 编写ingress清单

这块就要根据不同的ingress-controller 编写不同的ingress，比如nginx、traefik 等

###########################################################################Author:      zisefeizhu#QQ:       2********0#Date:      2020-06-17#FileName:     nginx-ingress.yaml#URL:      https://www.cnblogs.com/zisefeizhu/#Description:    The test script#Copyright (C):    2020 All rights reserved###########################################################################apiVersion: extensions/v1beta1kind: Ingressmetadata: name: businesscardspec: # tls: # - hosts: # - businesscard.stage.realibox.com # secretName: businesscard-ingress-secret rules: - host: card.linux.com http:  paths:  - path: /  backend:   serviceName: businesscard   servicePort: 8000

6. 验证

资源pod、svc、ingress验证

# kubectl get pods,svc,ingress NAME           READY STATUS RESTARTS AGEpod/businesscard-deployment-f69768dd9-zc56p 1/1  Running 1   26hpod/nginx-deployment-6b474476c4-4644v   1/1  Running 0   4h28mpod/nginx-deployment-6b474476c4-b2dwh   1/1  Running 0   4h28mpod/nginx-deployment-6b474476c4-hdsgv   1/1  Running 0   4h28mNAME     TYPE  CLUSTER-IP  EXTERNAL-IP PORT(S) AGEservice/businesscard ClusterIP 10.68.32.93  <none>  8000/TCP 25hservice/kubernetes  ClusterIP 10.68.0.1  <none>  443/TCP 3d11hservice/nginx   ClusterIP 10.68.185.184 <none>  80/TCP  4h28mNAME        CLASS HOSTS    ADDRESS PORTS AGEingress.extensions/businesscard <none> card.linux.com    80  6h11mingress.extensions/ingress-test <none> test.ingress.com    80  24hingress.extensions/nginx   <none> nginx.linux.com    80  4h28m

客户端验证

验证成功。

k8s：py项目发布完整流程