mysql-Calpont not starting

Question

I have mysql-Calpont installed in a Linux machine. When i try to start mysql-Calpont, it gives an error: Starting MySQL. ERROR! Manager of pid-file quit without updating file.

Totally new to Linux. Need help to figure out why this is happening and how to get mysql started.

Thanks

Answer 1

Seems like mysql user is missing. Please execute as root:
groupadd mysql
useradd -r -g mysql mysql