DB Warning on startup: Establishing SSL connection without server's identity verification is not recommended.

Question

After a migration from the DB (MySQL), in the log appear

WARN: Establishing SSL connection without server's identity verification is not 
recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection
must be established by default if explicit option isn't set. For compliance with existing 
applications not using SSL the verifyServerCertificate property is set to 'false'. 
You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true
and provide truststore for server certificate verification.

Answer

You have to use the parameter useSSL=false in the DB connection (the config can be found in ..\tomcat\webapps\ROOT\META-INF\context.xml)

E.g the url should look like: 
jdbc:mysql://localhost:3306/jahia?autoReconnect=true&useSSL=false

This will supress this ssl errors. And Jahia will start correctly.