Red Hat Enterprise Linux 6.7 installation

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”

rhel_67_step_1

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.

rhel_67_step_2

Graphical installer will show up. Push Next.

rhel_67_step_3Red Hat 6 is using a wizard style installer, so there is a series of screens that we’ll have to click through. The first one is language choice.

rhel_67_step_4After we’ve chosen the language, we do the same with keyboard layout:
rhel_67_step_5The 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.rhel_67_step_6In the next step we will set the hostname. Use fully qualified domain name if available.

rhel_67_step_8If 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 anrhel_67_step_9 interface and click “Edit”.

Go to IPv4 tab to select how the address will be obtained. Optionally do the same on IPv6 tab (or disable IPv6 if you don’t need it).rhel_67_step_10

In the next step Installer will ask for the system default timezone. Select appropriate timezone and press Next.rhel_67_step_11

The following step is setting root password. Select a good, secure password and click Next.rhel_67_step_12

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
swap 256MB Linux swap
/boot 250MB ext2/3/4
/ 3GB (minimal) 5GB (full) ext2/3/4
/home 100MB any supported
/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.

rhel_67_step_13

When you click Next, the installer will create and format all partitions.rhel_67_step_14

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”.rhel_67_step_15

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.rhel_67_step_16That’s it! Your new RHEL 6.7 system is now ready.

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