{{tag>[hardware supermicro centos 7]}}

=====Supermicro - Install CentOS 7=====


**----====[Work in progress]====----**

This page describes the installation of CentOS 7 on Supermicro hardware. I will be using this server for virtualization (KVM).
====BIOS settings====
Mainbord model: X9SCL, version: 2.10 (01/09/2014)\\
IPMI Firmware: 3.38

  * Quiet Boot: **Disabled**
  * Restore on AC Power Loss: **Last State**
  * Intel VT-d: **Enabled**
  * Active State Power Management: **Disabled**
  * SATA Mode: **AHCI**
  * SOL (Serial Over LAN): **Enabled**
    * Terminal type: **VT100+**
    * Bits per second: **115200**
  * Fan speed control mode: **Optimal**


====Install CentOS 7====
  * Connect to the server via IPMI (remote console) and connect the installation ISO via the iKVM viewer.
  * Boot the server, press F11 and select: **IPMI Virtual CDROM**
  * Date & Time: Europe/Amsterdam
  * Keyboard: English (US)
  * Language support: English (United States)
  * Installation source: Local media
  * Software selection: minimal install
  * Installation destination: software RAID1 /boot, swap, /, /var.

====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=2 --word=8 --parity=no --stop=1"

## Remove "rhgb quiet" from GRUB_CMDLINE_LINUX, add: console=tty0 console=ttyS2,115200n8
</code>
  * Rebuild the grub.cfg file with following command: <code>grub-mkconfig -o /boot/grub/grub.cfg</code>
  * Reboot and test the serial console via IPMI over SSH.
===Test SOL connection===
  * SSH to ipmi address.
  * Open SOL: <code>cd system1/sol1
start</code>
  * To exit, press: <enter> <esc> <T>.

===Configure networking (bonding, VLANs and bridges)===
  * Set hostname: <code>hostnamectl set-hostname <enter fqdn></code>
  * Install tools:<code>yum install bridge-utils tcpdump</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>
  * Test:<code>brctl show
cat /proc/net/bonding/bond0</code>

===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 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>