从0到1开发自动化运维平台Day1

　　今天开始抽时间将运维平台怎么从0到1的实现分享给大家.
　　后端用的djangorestframework框架，今天先创建一个django项目，实现区域和IDC的管理.
　　1、创建目录，初始化虚拟环境，然后安装drf框架➜ ~ mkdir ydevops-backend ➜ ~ cd ydevops-backend ➜ ~ python3.9 -m venv venv ➜ ~ source venv/bin/activate (venv) ➜  pip install djangorestframework (venv) ➜  pip list Package             Version ------------------- -------- asgiref             3.6.0 Django              4.1.7 djangorestframework 3.14.0 pip                 22.0.4 pytz                2022.7.1 setuptools          58.1.0 sqlparse            0.4.3 WARNING: You are using pip version 22.0.4; however, version 23.0.1 is available. You should consider upgrading via the ＂/home/charles/ydevops-backend/venv/bin/python3.9 -m pip install --upgrade pip＂ command.
　　2、创建工程(venv) ➜ django-admin startproject devops_backend .  # 注意后面有个点 (venv) ➜ ls devops_backend  manage.py  venv
　　3、创建第一个模块，cmdb模块(venv) ➜  django-admin startapp cmdb (venv) ➜  ls cmdb  devops_backend  manage.py  venv
　　4、重新梳理下代码结构(venv) ➜  mkdir apps (venv) ➜  mv cmdb apps/
　　代码结构变化后，我们还需要修改下settings.pyimport os import sys ... sys.path.insert(0, os.path.join(BASE_DIR, ＂apps＂))
　　5、生成数据表及创建用户(venv) ➜  python manage.py migrate        Operations to perform:   Apply all migrations: admin, auth, contenttypes, sessions Running migrations:   Applying contenttypes.0001_initial... OK   Applying auth.0001_initial... OK   Applying admin.0001_initial... OK   Applying admin.0002_logentry_remove_auto_add... OK   Applying admin.0003_logentry_add_action_flag_choices... OK   Applying contenttypes.0002_remove_content_type_name... OK   Applying auth.0002_alter_permission_name_max_length... OK   Applying auth.0003_alter_user_email_max_length... OK   Applying auth.0004_alter_user_username_opts... OK   Applying auth.0005_alter_user_last_login_null... OK   Applying auth.0006_require_contenttypes_0002... OK   Applying auth.0007_alter_validators_add_error_messages... OK   Applying auth.0008_alter_user_username_max_length... OK   Applying auth.0009_alter_user_last_name_max_length... OK   Applying auth.0010_alter_group_name_max_length... OK   Applying auth.0011_update_proxy_permissions... OK   Applying auth.0012_alter_user_first_name_max_length... OK   Applying sessions.0001_initial... OK (venv) ➜  python manage.py createsuperuser 用户名 (leave blank to use ＂charles＂): admin 电子邮件地址: admin@localhost Password:  Password (again):  密码长度太短。密码必须包含至少 8 个字符。 这个密码太常见了。 密码只包含数字。 Bypass password validation and create user anyway? [y/N]: y    Superuser created successfully.
　　6、运行项目(venv) ➜  python manage.py runserver 0.0.0.0:9000            Watching for file changes with StatReloader Performing system checks...  System check identified no issues (0 silenced). March 21, 2023 - 13:43:54 Django version 4.1.7, using settings ＂devops_backend.settings＂ Starting development server at http://0.0.0.0:9000/ Quit the server with CONTROL-C.
　　此时打开浏览器，应该可以看到首页，如下图所示：
　　7、现在我们开始来编写区域表Region和IDC表Idc# 创建模型、视图和序列化器 (venv) ➜  cd apps/cmdb (venv) ➜  mkdir model serializer view (venv) ➜  touch {model,serializer,view}/__init__.py
　　公共模型# model/model_assets.py from django.db import models   class TimeAbstract(models.Model):     update_time = models.DateTimeField(         auto_now=True, null=True, blank=True, verbose_name=＂更新时间＂)     created_time = models.DateTimeField(         auto_now_add=True, null=True, blank=True, verbose_name=＂创建时间＂)      class ExtMeta:         related = False         dashboard = False      class Meta:         abstract = True         ordering = [＂-id＂]
　　Region模型# model/model_assets.py class Region(TimeAbstract):     name = models.CharField(max_length=100, unique=True, verbose_name=＂地域＂)     alias = models.CharField(max_length=128, default=＂＂, verbose_name=＂地域别名＂)     desc = models.TextField(verbose_name=＂详情描述＂, null=True, blank=True)     extra = models.JSONField(default=dict, verbose_name=＂扩展字段＂)     # {0: 禁用， 1： 启用}     is_enable = models.SmallIntegerField(         default=1, verbose_name=＂启用＂, help_text=＂状态 {0: 禁用， 1： 启用}，默认值为1＂)      def __str__(self) -> str:         return self.alias      class ExtMeta:         related = True         dashboard = True      class Meta:         verbose_name = ＂地域＂         verbose_name_plural = verbose_name + ＂管理＂
　　Idc模型IDC_TYPE = (     (0, ＂物理机房＂), (1, ＂公有云＂) )   class Idc(TimeAbstract):     ＂＂＂     Idc模型     ＂＂＂     name = models.CharField(max_length=100, unique=True, verbose_name=＂名称＂)     alias = models.CharField(max_length=128, unique=True, verbose_name=＂别名＂)     region = models.ForeignKey(         Region, blank=True, null=True, on_delete=models.PROTECT, verbose_name=＂区域＂)     type = models.SmallIntegerField(default=0, choices=IDC_TYPE, verbose_name=＂机房类型＂,                                     help_text=f＂可选： {IDC_TYPE}＂)     supplier = models.CharField(         max_length=128, default=None, null=True, blank=True, verbose_name=＂服务商＂)     config = models.JSONField(default=dict, verbose_name=＂配置信息＂,                               help_text=＂阿里云：{＂key＂:＂key＂,＂secret＂:＂secret＂,＂region＂:[＂cn-south-1＂],＂project＂:[]} 华为云：{＂domain＂:＂domain＂,＂user＂:＂user＂,＂password＂:password＂,＂project＂:[{＂region＂:＂region＂,＂project_id＂:＂project_id＂}]}＂)     forward = models.BooleanField(default=False, verbose_name=＂是否中转＂)     ops = models.CharField(max_length=100, blank=True,                            null=True, verbose_name=＂运维机器＂)     repo = models.SmallIntegerField(default=0, verbose_name=＂镜像仓库＂)     contact = models.JSONField(default=list, verbose_name=＂联系人＂)     desc = models.TextField(default=＂＂, null=True,                             blank=True, verbose_name=＂备注＂)      def __str__(self):         return self.name      class ExtMeta:         related = True         dashboard = True         icon = ＂international＂      class Meta:         verbose_name = ＂IDC机房＂         verbose_name_plural = verbose_name + ＂管理＂
　　8、创建区域和IDC表(venv) ➜ cd ../.. (venv) ➜ python manage.py makemigrations Migrations for ＂cmdb＂:   apps/cmdb/migrations/0001_initial.py     - Create model Region     - Create model Idc (venv) ➜ python manage.py migrate        Operations to perform:   Apply all migrations: admin, auth, cmdb, contenttypes, sessions Running migrations:   Applying cmdb.0001_initial... OK
　　9、编写序列化器#!/usr/bin/env python # -*- encoding: utf-8 -*- ＂＂＂ @author  :   Charles Lai @file    :   serializer_assets.py @time    :   2023/03/21 22:18 @contact :   qqing_lai@hotmail.com ＂＂＂  # here put the import lib from rest_framework import serializers  from cmdb.models import Region, Idc   class RegionSerializers(serializers.ModelSerializer):      class Meta:         model = Region         fields = ＂__all__＂   class IdcSerializers(serializers.ModelSerializer):      class Meta:         model = Idc         fields = ＂__all__＂
　　10、编写视图#!/usr/bin/env python # -*- encoding: utf-8 -*- ＂＂＂ @author  :   Charles Lai @file    :   view_assets.py @time    :   2023/03/21 22:21 @contact :   qqing_lai@hotmail.com ＂＂＂  # here put the import lib from rest_framework import viewsets  from cmdb.models import Region, Idc from cmdb.serializer import RegionSerializers, IdcSerializers   class RegionViewSet(viewsets.ModelViewSet):     ＂＂＂     区域视图      ### 区域权限         {＂*＂: (＂env_all＂, ＂区域环境管理＂)},         {＂get＂: (＂env_list＂, ＂查看区域环境＂)},         {＂post＂: (＂env_create＂, ＂创建区域环境＂)},         {＂put＂: (＂env_edit＂, ＂编辑区域环境＂)},         {＂patch＂: (＂env_edit＂, ＂编辑区域环境＂)},         {＂delete＂: (＂env_delete＂, ＂删除区域环境＂)}     ＂＂＂     perms_map = (         {＂*＂: (＂admin＂, ＂管理员＂)},         {＂*＂: (＂env_all＂, ＂区域环境管理＂)},         {＂get＂: (＂env_list＂, ＂查看区域环境＂)},         {＂post＂: (＂env_create＂, ＂创建区域环境＂)},         {＂put＂: (＂env_edit＂, ＂编辑区域环境＂)},         {＂patch＂: (＂env_edit＂, ＂编辑区域环境＂)},         {＂delete＂: (＂env_delete＂, ＂删除区域环境＂)}     )     queryset = Region.objects.all()     serializer_class = RegionSerializers   class IdcViewSet(viewsets.ModelViewSet):     ＂＂＂     IT资产 - IDC视图      ### IDC权限         {＂*＂: (＂itasset_all＂, ＂IT资产管理＂)},         {＂get＂: (＂itasset_list＂, ＂查看IT资产＂)},         {＂post＂: (＂itasset_create＂, ＂创建IT资产＂)},         {＂put＂: (＂itasset_edit＂, ＂编辑IT资产＂)},         {＂delete＂: (＂itasset_delete＂, ＂删除IT资产＂)}     ＂＂＂     perms_map = (         {＂*＂: (＂admin＂, ＂管理员＂)},         {＂*＂: (＂itasset_all＂, ＂IT资产管理＂)},         {＂get＂: (＂itasset_list＂, ＂查看IT资产＂)},         {＂post＂: (＂itasset_create＂, ＂创建IT资产＂)},         {＂put＂: (＂itasset_edit＂, ＂编辑IT资产＂)},         {＂delete＂: (＂itasset_delete＂, ＂删除IT资产＂)}     )     queryset = Idc.objects.all()     serializer_class = IdcSerializers
　　11、添加路由，修改devops_backend/urls.py＂＂＂devops_backend URL Configuration ＂＂＂ from django.contrib import admin from django.urls import path, include  from rest_framework.routers import DefaultRouter  from cmdb.views import RegionViewSet, IdcViewSet  router = DefaultRouter() router.register(＂region＂, RegionViewSet) router.register(＂asset/idc＂, IdcViewSet)  urlpatterns = [     path(＂admin/＂, admin.site.urls),     path(＂api/＂, include(router.urls)), ]
　　12、这样我们就实现了区域和IDC的管理了，此时打开http://localhost:9000/api/?format=api，应看到下图所示：
　　点击进入每个路由都可以进行get和post请求操作.
　　好了，今天就实现region和idc的管理接口，暂时先这样吧