linux12Devops --＞07jenkins部署python

Posted 2021-09-07 FikL-09-19

文章目录

• • Jenkins部署Python
  • • 一、部署环境
    • • 1、设计
      • 2.准备代码
      • • 1）克隆仓库k8s-master1 部署一个基础环境
        • 2）编写Dockerfile
      • 3）构建镜像
      • • 4）编写配置清单
    • 二、部署环境
    • • 1.部署python
      • 2.访问测试

Jenkins部署Python

编译环境（python）

部署环境

一、部署环境

1、设计

user  ---> ingress  ---> endprints  ---> pod
# 因为endpoints上面有ingress，所以在写配置清单时要用无头service

# ingress
URL: www.django.cluster.local.com

# endPrints
service ---> 8080

# Pod
django:2+

## 构建镜像 ：python:3.6.13

2.准备代码

1）克隆仓库k8s-master1 部署一个基础环境

• k8s-master1 部署一个基础环境
• 克隆并生成，上传至自己的代码仓库
• 过程中若需要输入密码，则需将ssh公钥添加到gitlab内，否则密码正确也无效！

[root@k8s-m-01 ~]# yum install python -y
[root@k8s-m-01 ~]# git clone [e-mail]:chenyang0910/django_test.git
[root@k8s-m-01 django]# cd django/
[root@k8s-m-01 django]# rm -rf .git/
[root@k8s-m-01 django]# 
git init
git add .git remote add origin git@192.168.12.82:root/django.git
git remote add origin git@192.168.12.82:root/django.git
git add .
git commit -m 'init' 
git push -u origin master 

# 拷贝代码链接
git@192.168.12.82:root/django.git		# ssh
http://192.168.12.82/root/django.git	# http

2）编写Dockerfile

• 编写jenkins-python的Dockerfile与启动脚本

1.编写Dockerfile
[root@k8s-m-01 django]# cat > Dockerfile << EOF
# 指定基础镜像
FROM python:3.6.13

# 安装django框架
RUN pip3 install django==2.0.7

# 设置需要挂载的目录
VOLUME ['/opt']

# 暴露端口，默认也是8080
EXPOSE 8080

# 设置工作目录
WORKDIR /opt

# 启动命令，监听所有ip的8080端口
CMD ["./start"]
EOF

2.编写启动脚本
[root@k8s-m-01 django]# cat > start <<EOF
#!/bin/bash
# 安装插件
pip3 install -r requirements.txt

python manage.py runserver 0.0.0.0:8080
EOF
[root@k8s-m-01 django]# chmod +x start

3）构建镜像

# 构建
[root@k8s-m-01 django]# docker build -t  registry.cn-shanghai.aliyuncs.com/op_devops/python:jenkins-python:py3.6.13-dj2.0.7 .

# 推送
[root@k8s-m-01 django]# docker push  registry.cn-shanghai.aliyuncs.com/op_devops/python:jenkins-python:py3.6.13-dj2.0.7

4）编写配置清单

• 部署python配置清单

cat > django-python.yaml <<EOF
kind: Namespace
apiVersion: v1
metadata:
  name: python-mysql
---
kind: Service
apiVersion: v1
metadata:
  name: python-mysql-svc
  namespace: python-mysql
spec:
  ports:
    - port: 3306
      targetPort: 3306
  selector:
    app: python-mysql
    deploy: mysql
---
kind: Deployment
apiVersion: apps/v1
metadata:
  namespace: python-mysql
  name: python-mysql-deployment
spec:
  selector:
    matchLabels:
      app: python-mysql
      deploy: mysql
  template:
    metadata:
      labels:
        app: python-mysql
        deploy: mysql
    spec:
      nodeName: k8s-master1
      containers:
        - name: mysql
          image: mysql:5.7
          env:
            - name: MYSQL_ROOT_PASSWORD
              value: "123"
            - name: MYSQL_DATABASE
              value: "migege"
---
kind: Namespace
apiVersion: v1
metadata:
  name: python-django
---
kind: Service
apiVersion: v1
metadata:
  name: python-django-svc
  namespace: python-django
spec:
  ports:
    - port: 8080
      targetPort: 8080
  clusterIP: None
  selector:
    app: python-django
    deploy: django
---
kind: Deployment
apiVersion: apps/v1
metadata:
  namespace: python-django
  name: python-django-svc
spec:
  selector:
    matchLabels:
      app: python-django
      deploy: django
  template:
    metadata:
      labels:
        app: python-django
        deploy: django
    spec:
      #nodeName: k8s-n-01
      containers:
        - name: django
          image: registry.cn-shanghai.aliyuncs.com/op_devops/python:jenkins-python:py3.6.13-dj2.0.7
          command: [ "/bin/bash", "-ce", "tail -f /dev/null" ]
          volumeMounts:
            - mountPath: /opt
              name: python-django-nfs
      volumes:
        - name: python-django-nfs
          nfs:
            path: /nfs/v5
            server: 172.16.15.111
---
kind: Ingress
apiVersion: extensions/v1beta1
metadata:
  name: python-django-ingress
  namespace: python-django
spec:
  rules:
    - host: www.django.cluster.local.com
      http:
        paths:
          - backend:
              serviceName: python-django-svc
              servicePort: 8080
            path: /
EOF

二、部署环境

1.部署python

[root@k8s-m-01 ~]# kubectl django-python.yaml

[root@k8s-m-01 ~]# kubectl get ingress -n python-django 
NAME                    CLASS    HOSTS                          ADDRESS   PORTS   AGE
python-django-ingress   <none>   www.django.cluster.local.com             80      2m33s
[root@k8s-m-01 ~]# kubectl get pod -n python-mysql 
NAME                                      READY   STATUS    RESTARTS   AGE
python-mysql-deployment-7f8c9ff55-srgs6   1/1     Running   0          10m

# 查看访问域名
[root@k8s-m-01 ~]# kubectl get ingress -n python-django 
NAME                    CLASS    HOSTS                          ADDRESS   PORTS   AGE
python-django-ingress   <none>   www.django.cluster.local.com             80      11m

# 查看访问端口：32145
[root@k8s-m-01 ~]# kubectl get svc -n ingress-nginx 
NAME           			  TYPE        CLUSTER-IP    EXTERNAL-IP PORT(S)    AGE
ingress-nginx-controller  NodePort    10.111.205.92    <none>    80:32145/TCP,443:32075/TCP   4d22h

2.访问测试

• 访问到如下界面即为成功

  www.django.cluster.local.com:32145