MySQL sql_mode Turning strict mode forever Linux for WHMCS

I am not very experienced with this, but I am trying to set the mySQL option strict_mode

to force-enforcing so that I can install and configure the database to install WHMCS.

The problem is that I have seen many different posts and people saying that you should change the my.cnf file and set the following sql_mode setting:

[mysqld]
sql_mode="TRADITIONAL,NO_AUTO_CREATE_USER"

      

        
        
        
      

    

I've also tried just the following:

sql_mode= "TRADITIONAL"

      

        
        
        
      

    

It seems that nothing comes of them. When I restart mySQL and then check the mode using this:

mysql> SELECT @@GLOBAL.sql_mode; 

      

        
        
        
      

    

I am getting the following, which apparently means that I am still in strict mode:

+ ---------------------------------------------- --- ----------------------------------------------- --- ----------------------------------------------- --- - + | @@ GLOBAL.sql_mode | + ------------------------------------------------- -------------------------------------------------- -------------------------------------------------- - + | STRICT_TRANS_TABLES, STRICT_ALL_TABLES, NO_ZERO_IN_DATE, NO_ZERO_DATE, ERROR_FOR_DIVISION_BY_ZERO, TRADITIONAL, NO_AUTO_CREATE_USER, NO_ENGINE_SUBSTITUTION | + ------------------------------------------------- -------------------------------------------------- -------------------------------------------------- - +

However, I can set strict mode for the session using this:

mysql> SET GLOBAL sql_mode ="";    

      

        
        
        
      

    

The problem is that the installation will fail when the machine reboots and then goes back to strict mode.

Does anyone else have any definitive suggestions on how I can permanently disable strict mode in MySQL on ubuntu to allow me to use WHMCS?

I can't find any other config files that might override this strict mode, but I might be missing something that is.