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Ganeti
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Install Ganeti

Debian 9

Install packages

apt-get install drbd-utils ganeti2 ganeti-instance-debootstrap qemu-kvm resolvconf lvm2 bridge-utils lzop

PCI Passthrough

/etc/modules

drbd
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

/etc/modprobe.d/vfio.conf
GTX1080

options vfio-pci ids=10de:1b80,10de:10f0

Networking

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet manual

auto br-lan
iface br-lan inet static
        address 134.197.X.X
        netmask 255.255.255.0
        gateway 134.197.X.X
        bridge_ports    eth0
        bridge_stp      off
        bridge_fd       0
        bridge_maxwait  0

# Replication network DRBD
auto eth1
iface eth1 inet manual

auto br-rep
iface br-rep inet static
        address 172.X.X.X
        netmask 255.255.255.0
        bridge_ports    eth1
        bridge_stp      off
        bridge_fd       0
        bridge_maxwait  0

DRBD Setup

echo "options drbd minor_count=128 usermode_helper=/bin/true" >/etc/modprobe.d/drbd.conf
echo "drbd" >>/etc/modules
rmmod drbd      # ignore error if the module isn't already loaded
modprobe drbd
update-initramfs -u

Initialize Master Node


gnt-cluster init \
--master-netdev=br-lan \
--enabled-hypervisors=kvm \
-s 172.20.128.11 \
--vg-name vg-ganeti \
--compression-tools gzip,gzip-fast,gzip-slow,lzop \
$HOSTNAME


gnt-cluster modify -H kvm:kernel_path=,initrd_path=

#Fix DF logjam
openssl dhparam -out dhparams.pem 2048
cat dhparams.pem >> /var/lib/ganeti/server.pem

#Change default link
gnt-cluster modify --nic-parameters link=br-lan

Add Node

gnt-node add -s 172.X.X.X cnode#.cse.unr.edu

Configuration

GFX Passthrough

unbind the PCI devices

lspci -nn | grep $YOUR_PCI_DEVICE


echo > 1 /sys/bus/pci/devices/0000:42:00.0/remove
echo > 1 /sys/bus/pci/devices/0000:42:00.1/remove
echo > 1 /sys/bus/pci/devices/0000:04:00.1/remove
echo > 1 /sys/bus/pci/devices/0000:04:00.0/remove


echo 10de 1b80 | tee /sys/bus/pci/drivers/vfio-pci/new_id
echo 10de 10f0 | tee /sys/bus/pci/drivers/vfio-pci/new_id

Modify Ganeti after installing Ubuntu\CentOS\RHEL


gnt-instance modify -H kvm_extra="\
-drive if=pflash\,format=raw\,readonly\,file=/usr/share/OVMF/OVMF_CODE.fd \
-drive if=pflash\,format=raw\,file=/var/local/ovmf/$HOST \
-device vfio-pci\,host=04:00.0\,addr=0x9 \
-device vfio-pci\,host=04:00.1\,addr=0x10 \
-cpu host\,kvm=off" $HOST

gnt-instance modify -H vga=none $HOST

Grub Changes for booting

GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=20
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT=""
GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0,115200n8"

GRUB_TERMINAL=serial
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"

Clusters

g.engr.unr.edu

Engineering Cluster

g.engr.unr.edu
g1.engr.unr.edu

Commands

#Add an instance
gnt-instance add -t plain -o debootstrap+stretch --disk 0:size=200G -B vcpus=4,minmem=256M,maxmem=8192M --no-name-check --no-ip-check --no-start $HOSTNAME

#Boot from host kernel
gnt-instance start -H kernel_path=/var/tmp/vmlinuz,initrd_path=/var/tmp/initrd.img,kernel_args="" $HOSTNAME

#Import A Backup
gnt-backup import --src-node=g1.engr.unr.edu --src-dir=$SRC_DIR -t plain --no-name-check --no-ip-check $HOSTNAME
Last Author
newellz2
Last Edited
Jun 22 2017, 1:30 PM

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