Ejabberd 14.05 CentOS 6 64bit not work

Dear everybody,

Please help me about installing this on my machine. Below all steps I did:

yum install libyaml-devel libyaml -y

Download ejabberd-14.05-linux-x86_64-installer.run

chmox +x ejabberd-14.05-linux-x86_64-installer.run
./ejabberd-14.05-linux-x86_64-installer.run
cp /opt/ejabberd-14.05/bin/ejabberd.init /etc/init.d/ejabberd

First run

service ejabberd start

System noticed no user to run (I don't understand why this installer file not do that), manual add:

useradd ejabberd

Start again and still not run:

[root@localhost ejabberd-14.05]# /etc/init.d/ejabberd start
This command can only be run by root or the user root

What's happened or bug?
And has this package support mysql?
Please help me! Thank very much