Adding services to auto start after reboot.

1. List All Services, Using '–list' parameter will displayed all services and their current status in each run-level configuration.

[ahmed@server ~]# chkconfig --list

myservermgesrv  0:off   1:off   2:on    3:on    4:on    5:on    6:off

abc-servc       0:off   1:off   2:off   3:on    4:off   5:on    6:off

xyz:ahmed       0:off   1:off   2:off   3:on    4:off   5:on    6:off

...

2. Adding mysqld, zabbix-server, zabbix-agent, httpd to chkconfig

[ahmed@server ~]# chkconfig --level 235 mysqld on

[ahmed@server ~]# chkconfig --level 235 zabbix-server on

[ahmed@server ~]# chkconfig --level 235 zabbix-agent on

[ahmed@server ~]# chkconfig --level 235 httpd on

3. To Disable any run-level use the off parameter.

[ahmed@server ~]# chkconfig --level 2 mysqld off