django -> blog project sqlite to mysql data migration

Preparation: mounting on the cloud server mysql =>   the Ubuntu install and configure a remote connection MySQL

           Local virtual environment installation mysqlclient ( Download ): python -m pip install mysqlclient- 1.4.4-cp36-cp36m-win_amd64.whl

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mysql data set

# root账号登录
mysql -u root -p 

# 创建数据库 — mysite_db
create database mysite_db default charset=utf8mb4 default collate utf8mb4_unicode_ci;

# 创建账号设置密码并赋予任意主机访问权限
create user 'user'@'%' identified by 'password';

# 添加权限到数据库(mysite_db)
GRANT ALL PRIVILEGES ON mysite_db.* TO 'user'@'%'IDENTIFIED BY 'password' WITH GRANT OPTION;

# 刷新权限(授权之后必须刷新权限才生效)
FLUSH PRIVILEGES；

---

Modify the blog project under \ mysite \ settings.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': '数据库名',
        'USER': '用户名',
        'PASSWORD': '密码',
        'HOST': 'IP',
        'PORT': '端口号',
    }
}

---

Database migration

Migrating database: python manage.py migrate

Generate cache: python manage.py createcachetable

Run the project and see the start situation: python manage.py runserver

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Migrating data

1. Restore the settings.py DATABASES is sqlite, export the data into the data.json: python manage.py dumpdata> data.json

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}

2. delete MySQL table django_content_type and all data auth_permission prevent duplication of data import data error

    输入: delete from auth_permission;     

             delete from django_content_type;

3. Then the settings.py DATABASES changes back mysql, and import data input python manage.py loaddata data.json

4. mysql load the time zone tables, command line execution: mysql_tzinfo_to_sql / usr / share / zoneinfo | mysql -u root mysql -p