Chapter 2.7RequirementsThese requirements must be met before installation.2.1. Software RequirementsTo perform an installation, the following software components must be available:• Base operating system — RHN Satellite Server is supported with Red Hat Enterprise Linux AS 4or later. The operating system can be installed from disc, local ISO image, kickstart, or any of themethods supported by Red Hat, but must provide the @Base package group, as the RHN SatelliteServer installation program will install the RHN Satellite Server packages as well as additional RedHat Enterprise Linux packages not provided in @Base but are needed for RHN Satellite Server.WarningSecurity-enhanced Linux (SELinux) must be disabled or in permissive mode prior toinstallation of RHN Satellite Server. To do this during CD or ISO image installation,select Permissive when presented with options for SELinux support. To dothis for kickstart installation, include the command selinux --permissiveor wait for the install to complete, edit the /etc/selinux/config file to readSELINUX=permissive and reboot the system.More in-depth coverage of SELinux is available at http://www.redhat.com/docs/. Youmay also refer to the Red Hat Knowledgebase article on SELinux and RHN SatelliteServer at http://kbase.redhat.com/faq/.• Satellite installation disc or ISO — this contains the RHN Satellite Server Installation Program.All packages required in order to suport the Program are installed automatically, and require nointervention from the user.NoteInstalling packages other than the packages contained in the @Base package groupcan lead to package conflicts.• Channel content — All software packages and data exported for all entitled Red Hat channels.This content may be loaded directly on the Satellite after installation using the RHN SatelliteSynchronization Tool or obtained from your Red Hat representative if synchronization is notpossible, such as in a disconnected environment.When installing Red Hat Enterprise Linux AS 4 or later from CD or ISO image, there is no need toselect any package groups, only the base install is required. When installing either operating systemvia kickstart, select the @ Base package group.2.2. Hardware RequirementsThe following hardware configuration is required for the two types of RHN Satellite Server: