spawn-vm

#!/bin/bash
NAME=$1
PURPOSE=${2:-$NAME from $ISOFILE on $DATE}
DISTRO=${3:-rhel-8.5}
ISOFILE=${3:-rhel-8.5-x86_64-dvd.iso}
FIRMWARE=${4:-bios}
NO=$(echo $NAME | grep -Eo '[[:digit:]]+')
IMGPATH=/var/lib/libvirt/images
KSFILE=$IMGPATH/kickstart-$NAME.iso
VG=vg_virt
MAC=52:54:00:c8:00
DOMAIN=local
TIMEZONE=Europe/Prague
ROOTPW=redhat
SELINUX=enforcing
FIREWALL=enable
RH_USER=redhat.com-username
RH_PASS=redhat.com-password
SSH_KEY=$HOME/.ssh/id_ed25519.pub
SSH_KEYSTRING=$(cat "$SSH_KEY" | cut -d" " -f2)
BASEDIR=$(dirname $0)
ME=$(basename $0)
[[ -f "$0.conf" ]] && source "$0.conf"
TMP=$(mktemp -d /tmp/$ME-XXXXXXX)
trap "rm -rf $TMP" EXIT

if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

if [[ ! -e $IMGPATH/$ISOFILE ]]; then
  echo "Unknown ISO: $ISOFILE"
  ls -1 $IMGPATH
  exit 1
fi

if [[ ! -e /dev/$VG/$NAME ]]; then
  echo "Unknown volume: $NAME"
  exit 1
fi

if [[ "$FIRMWARE" == "bios" ]]; then
  BOOT="--boot bootmenu.enable=on,bios.useserial=on"
else
  BOOT="--boot uefi"
  # TODO ESP paritition
fi

if [[ $NAME == b* ]]; then
  MEMORY="--memory 20000"
else
  MEMORY="--memory 6000"
fi

mkdir $TMP/iso
cat >$TMP/iso/ks.cfg <<EOF
cdrom
text
skipx
lang en_US
keyboard us
timezone $TIMEZONE --isUtc
#authselect --useshadow --passalgo=sha512 --kickstart
#auth --passalgo=sha512 --useshadow
sshkey --username=root "$SSH_KEYSTRING"
network --bootproto dhcp --hostname $NAME.$DOMAIN
rootpw $ROOTPW --plaintext
selinux --$SELINUX
firewall --$FIREWALL
firstboot --disable
services --disabled=kdump
reboot --eject
bootloader --location=mbr --append="console=ttyS0"
zerombr
clearpart --all --initlabel
part / --fstype=xfs --size=1 --grow --asprimary
part swap --recommended
%packages
@core
vim-enhanced
tmux
git
%end
%post --log=/root/post.ks.log
cat >/etc/motd <<EOMOTD

A VM created by $ME on $(date), purpose:
$PURPOSE

EOMOTD
%end
%post --log=/root/rhsm.ks.log
subscription-manager register --auto-attach --username=$RH_USER --password=$RH_PASS
subscription-manager list --available
%end
EOF

mkisofs -V OEMDRV -o $KSFILE $TMP/iso

virsh destroy $NAME.$DOMAIN 2>/dev/null
virsh undefine $NAME.$DOMAIN 2>/dev/null
set -x
#virt-builder "$DISTRO" --output /dev/$VG/$NAME --root-password password:redhat --hostname $NAME.$DOMAIN --ssh-inject root:file:/home/lzap/.ssh/id_ed25519.pub --update --selinux-relabel --timezone Europe/Prague --run-command "echo '$PURPOSE' > /etc/motd"
#virt-install -n $NAME.$DOMAIN $MEMORY --vcpus 2 --os-variant rhel8-unknown --graphics none --noautoconsole $BOOT --serial pty --disk vol=$VG/$NAME --network network=provision,mac=52:54:00:c8:00:$NO --metadata "title=$PURPOSE"

# When debugging installer errors, connect to the console via Cockpit or "virsh
# console" and hit TAB key to modify boot options and enter "console=ttyS0" to
# actually see what is going on. Otherwise installation will be performed
# silently without any output.

virt-install -n $NAME.$DOMAIN $MEMORY --vcpus 2 \
	--os-variant rhel8-unknown --cdrom "$IMGPATH/$ISOFILE" \
	--graphics none --noautoconsole \
	$BOOT --serial pty \
	--disk vol=$VG/$NAME \
	--disk device=cdrom,path=$KSFILE,source.startupPolicy=optional \
	--network network=provision,mac=$MAC:$NO \
	--metadata "title=$PURPOSE"