Restore MySQL database from dump file

When restoring a MySQL db from a .sql file (such as an SQL dump file created by mysqldump), the login credentials on the target (including root) may be overwritten by the source .sql file if the .sql file was created with the --all-databases option.

RabbitMQ TLS

After copying the ca cert and key files, specify their locations in RabbitMQ's config file (/etc/rabbitmq/rabbitmq.config). Make sure the user "rabbitmq" can read them, especially the key file. Otherwise TLS connection attempts would just get stuck with no error message showing up in server nor client.