erreur mysql 5.7 log-slow-queries

journaliser les requêtes lentes est obsolète

Voir http://dev.mysql.com/ doc/refman/5.7/en/slow-query-log.html

# Here you can see queries with especially long duration
slow_query_log = 1
slow_query_log_file = /var/log/mysql/slow-queries.log
long_query_time = 1