All posts by Matt Lord

Extending the SYS schema to show metadata locks

Starting with MySQL 5.7, performance_schema has been enhanced to instrument metadata locks, and can be turned on by adding the following line to your my.cnf file:

(At runtime, it can also be enabled by modifying the setup_instruments table in performance_schema.)

From here, you can now query performance_schema.metadata_locks to reveal all currently open metadata locks on your server:

Simplified SSL/TLS Setup for MySQL Community

Transport Layer Security (TLS, also often referred to as SSL) is an important component of a secure MySQL deployment, but the complexities of properly generating the necessary key material and configuring the server dissuaded many users from completing this task.  MySQL Server 5.7 simplifies this task for both Enterprise and Community users. …