In the default state of superset, the sqlite database is used. Due to sqlite performance problems, it is now necessary to switch to the mysql database;
The first step is to prepare the Mysql database service
schema：superset_db
userName：root
password：root
The server where superset is located also needs to install mysql-related dependencies
yum install mysql-community-client yum install mysql-devel //Install the dependencies of Python to connect to mysql pip install mysqlclient
Step 1: Modify the configuration file ${superset}/config.py
vim config.py
# The SQLAlchemy connection string. #SQLALCHEMY_DATABASE_URI = 'sqlite:///' + os.path.join(DATA_DIR, 'superset.db') #SQLALCHEMY_DATABASE_URI = 'mysql://myapp@localhost/myapp' SQLALCHEMY_DATABASE_URI = 'mysql://root:[email protected]/superset_db?charset=UTF8' Entering Ex mode. Type "visual" to go to Normal mode.
Step 2: Reinitialize the password
fabmanager create-admin --app superset
Step 3: Initialize the database
superset db upgrade
Step 4: Load the examples
superset load_examples
Step 4: Initialize superset superset init
Step 5: Start the server superset runserver
Superset can support multiple data sources at the same time, and developers can manage data sources through the console
Then click the "+" in the upper right corner to add a data source
Developers can use this data source in the SQL tool of superset only if the option "Open in SQL Toolbox" is checked;
The SQLAlchemy URI item needs to enter the correct data source address, for example: mysql://root:[email protected]/superset_test_db?charset=utf8, root is the username, XXXXXXXXXX is the password, superset_test_db is the database schema, and charset=utf8 is specified Data source encoding (very important);
Note: After entering the data source uri, click the "Test Connection Button" and return to "Seems OK!" It means the connection is successful, and you can click the Save button!