I need to replicate different MySQL databases from multiple master servers into a single slave server. Have installed multiple mysql instances on single machine with 2 different my.cnf & my1.cnf files. I have also created 2 separate daemon files for both the instances. However when I start both mysql instances, the result of pidof mysqld1 [i.e second instance] is blank. Please suggest me as where I might be going wrong as this the first time I am doing it.