10-master-setup.sh

#@RunAs: Open a Terminal with user root @ Master Machine*****

###
### Bash Shell behavior
#   @doc -e Exit immediately if a command returns a non-zero status.
#   @doc -u Treat unset variables and parameters other than the special parameters ‘@’ or ‘*’ as an error when performing parameter expansion.
#   @doc -x Print a trace of commands after they are expanded and before they are executed.
set -u
set -x

###
### Global vars
MYDOMAIN="myvmtest"
MYIPADDRESS=192.168.122.102
MYMACADDRESS=52:54:00:ff:ff:66

###
### Check you are on the correct host: Host Machine (not the VM)
hostname
whoami
if [ "`hostname`" == "${MYDOMAIN}" ]; then
    echo "ABORT. This is not a session on the Host Machine"
    sleep 10
    exit 1
else 
    echo "OK. This is a session on the Host Machine"
fi

###
### Prepare
mkdir ~/tmp
cd ~/tmp

##
## Requirement: Check CPU supports VM's
apt --yes install cpu-checker
if ! kvm-ok; then
    echo "ABORT. This  system lacks Virtualization Technology.";
    sleep 10;
    exit 1;
else
    echo "OK. This  system supports Virtualization Technology.";
fi

##
## Install libvirt
#       virtinst        (admin): Programs to create and clone virtual machines
#       libvirt-clients (admin): Programs for the libvirt library
#       libvirt-bin     (devel): programs for the libvirt library. Provides libvirtd which you need to administer VM instances using libvirt.
#       virt-manager    (admin): desktop application for managing virtual machines 
#       libosinfo-bin   (libs): Library for managing information about operating systems and hypervisors [universe] 
apt --yes install \
    qemu-kvm \
    libvirt-bin libvirt-clients virt-manager virtinst \
    libosinfo-bin

##
## Linux User Config
#   @doc In recent releases (>= Ubuntu Yakkety) the group was renamed from libvirtd to libvirt. Upgraded systems get a new libvirt group with the same gid as the libvirtd group to match that.
#   @fix QEMU: ISO permission denied for user <root>.
cat /etc/group | grep "libvirt"
adduser root libvirt
adduser ubuntu libvirt
adduser root libvirtd       # legacy
adduser ubuntu libvirtd     # legacy

MYFILE=/etc/libvirt/qemu.conf
MYBACKUPFILE=~/--etc--libvirt--qemu.conf.backup
if [ ! -f ${MYBACKUPFILE} ]; then
    echo "OK. Making backup..."
    cp --verbose ${MYFILE} ${MYBACKUPFILE}
else
    echo "OK. Backup file already exists ${MYBACKUPFILE} :)"
fi
if [ ! -f ${MYFILE} ]; then
    echo "ERROR. Cannot find file ${MYFILE}"
else
    sed --in-place \
        --expression 's/^#user = "root"/\n###RHMOD @fix ISO permission denied. Uncomment.\n# DEFAULT #user = "root"\nuser = "root"\n/'  \
        --expression 's/^#group = "root"/\n###RHMOD @fix ISO permission denied. Uncomment.\n# DEFAULT #group = "root"\ngroup = "root"\n/'  \
        ${MYFILE}

    egrep 'user = '  ${MYFILE}                 && echo "OK" || echo "NOT OK"
    egrep 'group = ' ${MYFILE}                 && echo "OK" || echo "NOT OK"
fi

##
## DAEMON libvirtd Config
#       1: DEBUG
#       2: INFO
#       3: WARNING
#       4: ERROR
MYFILE=/etc/libvirt/libvirtd.conf
MYBACKUPFILE=~/--etc--libvirt--libvirtd.conf.backup
if [ ! -f ${MYBACKUPFILE} ]; then
    echo "OK. Making backup..."
    cp --verbose ${MYFILE} ${MYBACKUPFILE}
else
    echo "OK. Backup file already exists ${MYBACKUPFILE} :)"
fi
if [ ! -f ${MYFILE} ]; then
    echo "ERROR. Cannot find file ${MYFILE}"
else
    sed --in-place \
        --expression 's/^#log_level = 3/\n###RHMOD\n#log_level = 3\nlog_level = 2\n/'  \
        --expression 's/^#log_outputs="3:syslog:libvirtd"/\n###RHMOD\n#log_outputs="3:syslog:libvirtd"\nlog_outputs="2:syslog:libvirtd"\n/'  \
        ${MYFILE}

    egrep 'log_level ='  ${MYFILE}                 && echo "OK" || echo "NOT OK"
    egrep 'log_outputs=' ${MYFILE}                 && echo "OK" || echo "NOT OK"
fi

##
## DAEMON libvirtd Restart
systemctl restart libvirtd; systemctl --no-pager status libvirtd;

###
### Add VM DNS name to /etc/hosts
MYFILE=/etc/hosts
if grep "${MYIPADDRESS} ${MYDOMAIN}" ${MYFILE}; then
    echo "OK. File already patched ${MYFILE}"
else
    cat >> ${MYFILE} <<THETEXTBLOCK

        ##RHMOD Append this
        ##RHMOD VM ${MYDOMAIN}
        ${MYIPADDRESS} ${MYDOMAIN}
THETEXTBLOCK
    cat ${MYFILE}
fi

###
### Libvirt DHCP: reserve a static IP Address for the Guest VM
#   @important DO this BEFORE creating the VM.
echo "mac: ${MYMACADDRESS} ip:${MYIPADDRESS}"
virsh net-update default delete ip-dhcp-host "<host ip='${MYIPADDRESS}'/>" --config --live
virsh net-update default add    ip-dhcp-host "<host mac='${MYMACADDRESS}' name='${MYDOMAIN}' ip='${MYIPADDRESS}'/>" --config --live
virsh net-destroy default
virsh net-start default

###
### Create VM GUEST: VCPU 1 | Memory 2048MB | Disk 8GB | LAN default NAT
#       @doc Download ISO image
#           => http://releases.ubuntu.com/17.10/ubuntu-17.10-desktop-amd64.iso
#           => http://releases.ubuntu.com/17.10/ubuntu-17.10-server-amd64.iso
#       @doc VIRT INSTALLER
#       @doc    --os-variant ubuntu16.04 Always declare the latest Ubuntu LTS version (Ubuntu 16.10 LTS Zenial). You cannot specify non-LTS releases such as Ubuntu 17.10 Artful).
#       @doc    --network network=default Use a NAT-based virtual network (opposed to a bridged network).;
#       @doc    --video qxl Required for the new Waterland Gnome Display Manager (which replaces X.org in Ubuntu Artful).
#       @doc    --video vga/cirrus/vmvga is not compatible with Waterland. The new Gnome Desktop is then not available and the system fallbacks to the old X.org
#       @doc    The SPICE remote viewer is recommended (instead of VNC).
MYISODIR="/var/lib/libvirt/iso/"
MYISOFILE="ubuntu-17.10-desktop-amd64.iso"
MYISOPATH="${MYISODIR}${MYISOFILE}"

mkdir --parents ${MYISODIR}
cd ${MYISODIR}
if [ ! -f ${MYISOPATH} ]; then
    echo "OK. ISO not yet downloaded. Start downloading..."
    wget http://releases.ubuntu.com/17.10/${MYISOFILE}
else
    echo "OK. ISO already downloaded."
fi
ll ${MYISOPATH}

virt-install  \
    --debug  \
    --name ${MYDOMAIN}  \
    --cdrom ${MYISOPATH}  \
    --hvm  \
    --vcpus 1  \
    --memory 2048  \
    --disk path=/var/lib/libvirt/images/${MYDOMAIN}.img,size=8,bus=virtio  \
    --network network=default,mac=${MYMACADDRESS}  \
    --video qxl  \
    --os-variant ubuntu16.04  \
    --console pty,target_type=serial  \
    --graphics spice,listen=0.0.0.0