Oracle Linux 7.x - Install KVM server with GUI support via VNC

ol_7-install_kvm.sh

#!/bin/bash

##Install KVM, Dependencies & utils
yum -y install qemu-kvm qemu-img virt-manager libvirt libvirt-python libvirt-client virt-install virt-viewer oci-utils
yum groupinstall "Server with GUI" -y


##Install VNC Server
yum install xorg-x11-xauth xorg-x11-fonts-* xorg-x11-utils tigervnc-server mesa-libGL mesa-libEGL -y

cd /lib/systemd/system
cp vncserver@.service vncserver@:1.service

sed -i 's/<USER>/opc/g' vncserver@:1.service

firewall-cmd --permanent --zone=public --add-service vnc-server

mkdir /home/opc/.vnc
echo myvncpassword | vncpasswd -f >> /home/opc/.vnc/passwd
chown -R opc:opc /home/opc/.vnc
chmod 0600 /home/opc/.vnc/passwd

systemctl daemon-reload
systemctl enable vncserver@:1.service
systemctl start vncserver@:1.service

##Modify grub
GRUBFILE=/etc/default/grub
TMPFILE=`mktemp`

sed -e 's/^\(GRUB_CMDLINE_LINUX=".*\)"/\1 intel_iommu=on  kvm-intel.nested=1"/' $GRUBFILE > $TMPFILE

size=`du -b $GRUBFILE | awk '{print $1}'`
nsize=`du -b $TMPFILE | awk '{print $1}'`

if [[ $nsize -lt $size ]]
then
    echo "Error"
    exit 1
fi

chown --reference=$GRUBFILE $TMPFILE
chmod --reference=$GRUBFILE $TMPFILE

mv $TMPFILE $GRUBFILE

grub2-mkconfig -o /boot/grub2/grub.cfg

systemctl enable tuned
systemctl start tuned

sleep 10
tuned-adm profile virtual-host

##NAT / IP Forward
echo "net.ipv4.ip_forward=1" >> /etc/sysctl.d/98-ip-forward.conf

#Attach scsi disks & vnics using oci-utils package/service
systemctl start ocid.service
sleep 10

oci-iscsi-config -s

##Steps below required in case you attached a block volume to the instance

##Create FS and Mount disk
mkfs.xfs /dev/sdb
mkdir /mnt/kvm-guest-disk
mount -t xfs /dev/sdb /mnt/kvm-guest-disk/
sdb_uuid=`blkid /dev/sdb -s UUID -o value`
echo "UUID=$sdb_uuid    /mnt/kvm-guest-disk    xfs    defaults,noatime,_netdev,nofail" >> /etc/fstab




#after reboot
#oci-network-config -s