====== OS Install: Bare Metal ======

**General Information**

Installing on bare metal systems using the "net-install" method and kickstart.

**Checklist**
  * Distro(s): Enterprise Linux 6/7

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====== Net Install ======

Installing a system over the network procedure.
  * Netinstall ISO => used to bootstrap the system and define network,hostname,kickstart file and NFS source install location
    * Alternatively, [[linux_wiki:os_install_pxe_boot|PXE Boot]] can replace needing any physical installation media.
  * DVD ISO => located on the NFS server and is the source for the install
  * Kickstart file => located on the NFS server in the same location as the DVD ISO and automates the installer

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===== Netinstall ISO Prep =====

  * Download the OS net install image (to boot from)
    * Put this image on your local desktop/laptop or create a bootable USB flash drive

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===== NFS Server: Image Prep =====

[[linux_wiki:nfs_shares|Setup a NFS Server]] if you do not have one already.

  * Download the OS standard DVD install ISO (to provide the installation files over the network)
    * Put this image on your NFS server in an exported directory
  * [[https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Installation_Guide/ch-Preparing-x86.html#s1-steps-network-installs-x86-nfs|Prepare ISO+images directory]] on NFS server (If they don't exist already)
    * Mount the DVD ISO image temporarily<code bash>mount -t iso9660 -o loop /iso/centos6.7-dvd/CentOS-6.7-x86_64-bin-DVD1.iso /mnt</code>
    * Copy the images/ directory from the mounted ISO image to the same directory as the ISO image<code bash>cp -pr /mnt/images /iso/centos6.7-dvd/</code>
    * Unmount ISO image<code bash>umount /mnt</code>
    * Example: the directory /iso/centos6.7-dvd/ now contains:
      * CentOS-6.7-x86_64-bin-DVD1.iso
      * images/ (directory copied from ISO)

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===== Kickstart Config Prep =====

Create a kickstart file and put it in the same location on the NFS server as the ISO image.
  * Create Kickstart Config File(s) => [[linux_wiki:os_install_kickstart|Examples Here]]

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===== Boot to Netinstall ISO =====

  * Connect to system console (via KVM, other remote access solution, or physically in front of it)
  * Mount a netinstall ISO image from a location on your desktop/laptop
    * OR plugin a USB flash drive with a netinstall ISO on it to the server
  * Boot server to the netinstall ISO

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===== Kickstart Installation =====

On the **Welcome to CentOS** screen:

  * Highlight "Install or Upgrade an existing system" and press "tab" or "e" to edit boot options. (depending upon bios or uefi system)
  * CentOS 6
    * BIOS => After "vmlinuz initrd=initrd.img", append:<code bash>ks=nfs:<nfs-ip>:/iso/centos6.7-dvd/centos6-ks-bios.cfg ksdevice=link hostname=<fqdn-hostname> ip=x.x.x.x netmask=x.x.x.x gateway=x.x.x.x nameserver=x.x.x.x</code>
  * CentOS 7
    * BIOS => After "quiet", append:<code bash>inst.resolution=1024x768 inst.ks=nfs:<nfs-ip>:/iso/centos7.2-dvd/centos7-ks-bios.cfg ksdevice=link hostname=<fqdn-hostname> ip=x.x.x.x netmask=x.x.x.x gateway=x.x.x.x nameserver=x.x.x.x</code>
    * UEFI => After "quiet", append:<code bash>inst.resolution=1024x768 inst.ks=nfs:<nfs-ip>:/iso/centos7.2-dvd/centos7-ks-efi.cfg ksdevice=link hostname=<fqdn-hostname> ip=x.x.x.x netmask=x.x.x.x gateway=x.x.x.x nameserver=x.x.x.x</code>
   * **Note**: This can be pasted into most consoles by using KVM menus. (Keyboard > Send Text to Target... > Paste in text > click Ok)

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