{{tag>[hardware hp dl320e centos 7]}}

=====HP Proliant DL320e Gen8 v2 - Install CentOS 7=====
This page describes the installation of CentOS 7 on HP hardware. I will be using this server for virtualization (KVM).

====System info====
  * Brand, model: HP, Proliant DL320e Gen8 v2
  * CPU: E3-1240 v3 @ 3.40GHz (4 cores, 8 threads)
  * Memory: 32GB ECC
  * Storage: HP Smart Array P222 Controller with 4x 2,5" SAS 10k disks (RAID 1+0)
  * iLO 4

====BIOS settings====
  * System Options
    * Serial Port Options
      * Virtual serial port: **COM 2**
    * Processor Options
      * No-Execute Mem. protection: **Enabled**
      * Intel(R) Virtualization Technology: **Enabled**
      * Intel(R) Hyperthreading options: **Enabled**
      * Intel(R) Turbo Boost Technology: **Enabled**
      * Intel(R) VT-d: **Enabled**
  * Power Management Options
    * HP Power Profile: **Balanced**
    * HP Power Regulator: **HP Dynamic Power Savings mode**
  * PCI Device Enable/Disable
    * Disable embedded Smart Array B120i RAID controller.
  * Server Availability
    * ASR Status: **Enabled**
    * Automatic Power-on: **Restore Last Power State**
  * BIOS Serial Console & EMS
    * Console port: **Auto**
    * Baud rate: **115200**
  * Advanced Options
    * Advanced System ROM options
      * Power-On Logo: **disabled**
  * Thermal Configuration: **Optimal Cooling**

=====Install CentOS 7=====
  * Connect to the server via iLO (remote console) and connect the minimal installation ISO.
  * Boot the server, press F11 and boot from virtual CDROM / image.
  * Start CentOS 7 installation.
    * Date & Time: Europe/Amsterdam
    * Keyboard: English (US)
    * Language support: English (United States)
    * Installation source: Local media
    * Software selection: minimal install
    * Installation destination: /boot, swap, /, /var. XFS filesystems with LVM. <code>Filesystem               Size Mounted on
swap                       4G
/dev/mapper/centos-root    8G /
/dev/sda1                512M /boot
/dev/mapper/centos-home    4G /home
/dev/mapper/centos-var    16G /var
/dev/mapper/data-images  250G /var/lib/libvirt/images</code>

=====Configure CentOS7=====
====Configure Serial over LAN (SOL)====
  * Edit grub settings /etc/default/grub<code>
## Serial console settings
GRUB_TERMINAL="serial console"
GRUB_TERMINAL_OUTPUT="serial console"
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=1 --word=8 --parity=no --stop=1"

GRUB_CMDLINE_LINUX:
## Remove: "rhgb quiet"
## Add: console=tty0 console=ttyS1,115200n8 vga=normal nomodeset 3
</code>
  * Rebuild the grub.cfg file with following command: <code>grub2-mkconfig -o /boot/grub2/grub.cfg</code>
  * Reboot.
====Test SOL connection====
  * SSH to iLO address.
  * Open SOL: <code>textcons</code>
  * To exit, press: <esc> <(>.

====Configure networking (bonding, VLANs and bridges)====
  * Set hostname: <code>hostnamectl set-hostname <enter fqdn></code>
  * At the time of writing, there are some bugs in NetworkManager (nmcli) when enslaving VLAN devices into a bridge. So this configuration will not use NM.
  * Disable NM, enable network service: <code>systemctl stop NetworkManager.service
systemctl disable NetworkManager.service
systemctl enable network.service
systemctl start network.service</code>
  * Create bond0 device:<code>vi /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
BOOTPROTO=none
ONBOOT=yes
USERCTL=no
BONDING_OPTS="mode=4 miimon=100"
NM_CONTROLLED=no</code>
  * Add bond slaves:<code>vi /etc/sysconfig/network-scripts/ifcfg-eno1
DEVICE=eno1
MASTER=bond0
SLAVE=yes
USERCTL=no
ONBOOT=yes
BOOTPROTO=none
NM_CONTROLLED=no

vi /etc/sysconfig/network-scripts/ifcfg-enp2s0f0
DEVICE=enp2s0f0
MASTER=bond0
SLAVE=yes
USERCTL=no
ONBOOT=yes
BOOTPROTO=none
NM_CONTROLLED=no

vi /etc/sysconfig/network-scripts/ifcfg-enp2s0f1
DEVICE=enp2s0f1
MASTER=bond0
SLAVE=yes
USERCTL=no
ONBOOT=yes
BOOTPROTO=none
NM_CONTROLLED=no

vi /etc/sysconfig/network-scripts/ifcfg-enp4s0
DEVICE=enp4s0
MASTER=bond0
SLAVE=yes
USERCTL=no
ONBOOT=yes
BOOTPROTO=none
NM_CONTROLLED=no</code>
  * Create VLAN and bridge devices, do this for every VLAN you have:<code>vi /etc/sysconfig/network-scripts/ifcfg-br50
DEVICE=br50
ONBOOT=yes
SLAVE=bond0.50
TYPE=Bridge
VLAN=yes
NM_CONTROLLED=no

vi /etc/sysconfig/network-scripts/ifcfg-bond0.50
DEVICE=bond0.50
VLAN=yes
ONBOOT=yes
USERCTL=no
NM_CONTROLLED=no
BRIDGE=br50</code>
  * If needed, configure IP-addresses on bridge devices.
  * Restart networking:<code>service network restart</code>
  * Install tools:<code>yum install bridge-utils tcpdump</code>
  * Test:<code>brctl show
cat /proc/net/bonding/bond0</code>
  * Configure DNS, edit networkscripts (DNS1, DNS2)


====Configure firewall====
  * If virbr0 isn't in zone internal, configure it so:<code>firewall-cmd --permanent --zone=internal --change-interface=virbr0</code>
  * Add local (sources) subnets to trusted zone:<code>firewall-cmd --permanent --zone=trusted --add-source=192.168.2.0/24</code>
  * Reload firewall:<code>firewall-cmd --reload</code>

====Configure OS====
  * Install and configure chrony
  * Install and configure apcupsd
  * Set tuned profile: <code>tuned-adm profile virtual-host</code>
  * Configure postfix

=====Install HP repository=====
  * Download add_repo script:<code>curl -O http://downloads.linux.hp.com/add_repo.sh</code>
  * Install wget:<code>yum install wget</code>
  * Run the script as root:<code>sh ./add_repo.sh spp -d RHEL -r 7 -a x86_64</code>
  * Install tools you need, e.g.:<code>yum install hpssacli hp-health</code>
====Install virtualization tools====
  * Install libvirt etc: <code>yum groupinstall "Virtualization Host"</code>
  * Enable guest service so that guests are suspended before reboot/shutdown and auto started after boot:<code>systemctl enable libvirt-guests.service</code>