+
+
since Mysql version 8.0 the default values has been changed from mysql_native_password to caching_sha2_password
+this needs to be reverted in the cnf file
+
+
+
for my installation /etc/mysql/my.cnf is a symbolic link to /etc/alternatives/my.cnf which is a symbolic link to /etc/mysql/mysql.cnf
+so we need to edit the file /etc/mysql/mysql.cnf
+add the following at the end of the file
+++[mysqld]
+default_authentication_plugin=mysql_native_password
+
the group [mysqld] is for the server, for the client the group is [mysql]
+(info http://dev.mysql.com/doc/mysql/en/server-system-variables.html +
++ https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html )
+
+
+
possible places of the cnf file
+