mysqltuner invalid login credentials with verified correct password

I downloaded mysqltuner to use on my ubuntu server and no matter which user I attempt to login with, it responds that my credentials are invalid. I routinely log in as root with my root password and yet it will not recognize it. Does mysqltuner need to be saved in a specific location? do i need to specify 'root'@'something'? What can I be doing wrong?


I'm having the same issue. I can't connect to localhost but I can connect to remote host with this:

mysqltuner --host yourhostname --user youruser

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