15.1.2. Step 2: Creating a New Certificate System Installation

Install a new Certificate System 7.3 system on the Red Hat Enterprise Linux 4 (AS) machine, server.example.com.
1. Download the Certificate System packages from the Red Hat Network or through the up2date command.
2. To install the subsystems, run the install utility; this is not necessary if the subsystems were installed through up2date.
```
rhpki-install -pki-subsystem=ca 
 -pki_package_path=/media/cdrom/RedHat/RPMS -force
```
Configure the CA instance. It is possible to change the names of migrated Certificate System subsystem instances, but greater care must be taken when extracting and renaming certain portions of the data. Because port numbers are stored in the server.xml file, which is unaffected by subsystem migration, port numbers can be changed between instances without difficulty.

Go through the HTML configuration wizard. When the installation process is completed, the server returns a URL pointing to the configuration wizard. For example:
```
http://server.example.com:9080/ca/admin/console/config/
 login?pin=Yc6EuvuY2OeezKeX7REk
```
For more information on the panels in the configuration wizard, see chapter 2, "Installation and Configuration," in the Certificate System Administration Guide.