Centos auto start service
There are many ways to accomplish the same result this is just my preference.
Centos 6
To auto start services in Centos or Redhat OS, you can use builtin chkconfig utility. It is located in /sbin directory. If you are a regular user (non-root), then /sbin may not be in your path. Therefore, you may have to use the full path to access the chkconfig utility.
To auto start a new service: Find out the name of service script from /etc/init.d/ directory e.g. mysqld or httpd Add it to chkconfig
sudo /sbin/chkconfig --add mysqld
Make sure it is in the chkconfig.
sudo /sbin/chkconfig --list mysqld
Set it to autostart
sudo /sbin/chkconfig mysqld on
To stop a service from auto starting on boot
sudo /sbin/chkconfig mysqld off
Centos 7
When a service you installed needs to be started at boot use the following:
sudo systemctl enable nginx.service