One possible reason and solution for getting Access denied for user 'username'@'host' in mysql when accessing from outside

Sometimes we might get the below exception when creating a DB connection.

 {org.apache.synapse.mediators.db.DBLookupMediator}
org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Access denied for user 'username'@'203.94.95.133'

Reasons :

The particular IP might not be accessible from outside.

Therefore you need to grant priviledges by the below command in mysql :

GRANT ALL PRIVILEGES ON *.* TO 'username'@'%' IDENTIFIED BY 'password';


FLUSH PRIVILEGES;


Sometimes you might try out below :

GRANT ALL PRIVILEGES ON *.* TO 'password'@'%' WITH GRANT OPTION;

Eventhough it says Query OK, still the issue can be there since you have not used the password.

Also you must do a Flush privileges to update it.

Hope this might help sometimes.