A lot of systems in production still run Red Hat 6, so learning how to install (or reinstall) it is still a good idea. The instruction below will work with CentOS 6.7 as well.
As with Red Hat 7.2, first we need to obtain RHEL 6.7 ISO image file from access.redhat.com.
Once the image has been burned onto a DVD or USB stick (see my Red Hat 7.2 installation post for hints how to do this), or mounted into a Virtual Machine, we are ready to begin installation.
Once the boot loader shows up, choose “Install or upgrade an existing system”
If you’re installing from a physical medium (DVD or USB stick) you can choose to test the media before installation, or you can choose to Skip it.
Graphical installer will show up. Push Next.
After we’ve chosen the language, we do the same with keyboard layout:
The next step is accessing destination drive type. For internal hard drives or directly connected disk array choose “Basic Storage Devices”. For networked attached storage such as iSCSI or FCoE choose “Specialized Storage Devices”. Push next when done.In the next step we will set the hostname. Use fully qualified domain name if available.
If you want to customize network interface settings (by default RHEL will attempt to use DHCP to obtain an IP address automatically), click “Configure Network”. Network Manager window will appear and it will be possible to set up all interfaces available on the system. Select an interface and click “Edit”.
Then we will let the installer parition the destination drive. If you need to customize it, the recommended minimum partition sizes are as follows:
|Partition||Minimum size||Filesystem type|
|/||3GB (minimal) 5GB (full)||ext2/3/4|
|/tmp||50 MB*||any supported|
|/var||384 MB*||any supported|
|/boot||250 MB*||any supported|
* – optional
RHEL 6 Documentation also recommends leaving excess capacity unallocated. By default Red Hat will use LVM, so it will be possible to assign additional storage capacity later on as required.
In the last step we have to choose the package groups that will be installed. “Basic Server” is ok, because you can always install required packages later using yum command. If you see your use case on the list however (for example: Web Server), feel free to select the matching software set instead of “Basic Server”.
Once you click Next, installation will start. You will be notified when installation is finished. Remove RHEL DVD from the drive (or unmount image from virtual machine) and allow the installer to reboot your server.That’s it! Your new RHEL 6.7 system is now ready.