KBEC-00494 - CD Server Fails to Start Because of UncheckedException

Problem

The CD server fails to start with the following error:

2021-04-26T15:40:39.063 | ERROR | bootstrap                      |          |                                      |                                                                             | ServerStatus                   | Problem configuring the database: com.electriccloud.util.UncheckedException: com.mysql.cj.jdbc.Driver

Solution

This error occurs when upgrading the CD server to a newer version (10.1 in recent cases) while using the builtin MariaDB. The suggested workaround is installing the MySQL JDBC driver. Please check more details in Installing the MySQL JDBC Connector.

It is also recommended to use the 8.0.16 MySQL JDBC driver as other versions may not work according to the reported cases.

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