Using MySQL database with Hue
Hue is packaged with a lightweight embedded PostgreSQL database for proof-of-concept
deployments with one Hue server. However, you can install and use a custom MySQL database as the
backend database to store Hue metadata, job and query history, and account
Downloading and installing MySQL database Download and install MySQL database depending on your CDP and OS version. Configuring MySQL server The MySQL server, mysqld, has many command options and system variables that can be set at startup to configure its operation. The configurations are stored in the my.cnf file. Installing and configuring MySQL on RHEL 8 The steps for installing and configuring MySQL version 8.0.25 on RHEL 8 on a CDP cluster host are different. Make sure that you copy the corresponding my__config_8h_source.html content to the my_config.h file corresponding to your MySQL server version. Installing MySQL client for MySQL databases CDP uses Python version 3.8. To use MySQL as a backend database for Hue, you must install the MySQL client and other required dependencies on all the Hue hosts based on your operating system. Creating the Hue database Hue requires a SQL database to store small amounts of data, including user account information as well as the history of queries and sharing permissions. You must create a database for Hue with UTF-8 character set and grant user privileges. Configuring MySQL as the backend database for Hue After installing and configuring the MySQL database, you can configure Hue to use it as its backend database. Configuring MySQL server enforced with TLS 1.2 or higher to connect to Hue If your MySQL server is configured to use TLS version 1.2 or higher for an encrypted connection with Hue, then you may not be able to start the Hue server and the Kerberos ticket renewer. One solution to fix this problem is to upgrade the MySQL client to version 8.