can reproduce
Could not prefetch mysql_grant provider 'mysql': Execution of '/usr/bin/mysql --defaults-extra-file=/root/.my.cnf -NBe SELECT CONCAT(User, '@',Host) AS User FROM mysql.user' returned 1: ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 2
can reproduce extra-file= /root/. my.cnf -NBe SELECT CONCAT(User, '@',Host) AS User FROM mysql.user' returned 1: ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 2
Could not prefetch mysql_grant provider 'mysql': Execution of '/usr/bin/mysql --defaults-