script-collection/bash/kvm-deploy/kvm-cloud-init.sh

#!/bin/bash
#set -vx

hosts=("1.1.1.1" "2.2.2.2" "3.3.3.3")

get_host_info() {
echo "Refreshing host info..."
for h in "${hosts[@]}"; do
 virsh -c qemu+ssh://root@${h}/system pool-refresh --pool kvm_guests > /dev/null
 virsh -c qemu+ssh://root@${h}/system pool-refresh --pool nvme_guests > /dev/null
 virsh -c qemu+ssh://root@${h}/system pool-refresh --pool ISO > /dev/null
 echo "+++++++++++++++++"
 echo -e "Host ${h}\n"
 echo "+++++++++++++++++"
 virsh -c qemu+ssh://root@${h}/system list --all
done
echo "+++++++++++++++++"
echo "Disk Volumes"
echo "+++++++++++++++++"
virsh -c qemu+ssh://root@${hosts[0]}/system vol-list --pool kvm_guests --details
echo "+++++++++++++++++"
echo "nVME Volumes"
echo "+++++++++++++++++"
virsh -c qemu+ssh://root@${hosts[0]}/system vol-list --pool nvme_guests --details
echo "+++++++++++++++++"
echo "ISO Volumes"
echo "+++++++++++++++++"
virsh -c qemu+ssh://root@${hosts[0]}/system vol-list --pool ISO --details
$0
}

mass_startup(){
read -p "Which host?" KVM_HOST
guests=($(virsh -c qemu+ssh://root@${h}/system list --inactive | '/shut off/{print $2}'))

for g in "${guests[@]}"
do
 virsh -c qemu+ssh://root@${h}/system start ${g}
done
}

migrate_domain(){
echo "Migration Types
    1). Single Domain
    2). Offline Domain
    3). Mass Domain Migration
    "
read -p "Select Migration Type: " MIG
if [ $MIG == 1 ]; then
 read -p "Select source host. " SRC_URI
 virsh -c qemu+ssh://root@${SRC_URI}/system list | '/running/{print $2}'
 read -p "Select destination host. " DEST_URI
 read -p "Select domain. " DOM
 virsh -c qemu+ssh://root@${SRC_URI}/system migrate \
 --domain $DOM \
 --live \
 --p2p \
 --tunnelled \
 --desturi qemu+ssh://root@${DEST_URI}/system \
 --persistent \
 --undefinesource \
 --verbose
 rerun
elif [ $MIG == 2 ]; then
 read -p "Select source host. " SRC_URI
 read -p "Select destination host. " DEST_URI
 domain=($(virsh -c qemu+ssh://root@${SRC_URI}/system list --inactive | '/shut off/{print $2}'))
 for dom in "${domain[@]}"; do
  read -p "Select destination host. " DEST_URI
  virsh -c qemu+ssh://root@${SRC_URI}/system migrate \
  --domain $DOM \
  --live \
  --p2p \
  --tunnelled \
  --desturi qemu+ssh://root@${DEST_URI}/system \
  --persistent \
  --undefinesource \
  --verbose
  rerun
 done
elif [ $MIG == 3]; then
 read -p "Select source host. " SRC_URI
 read -p "Select destination host. " DEST_URI
 domain=($(virsh -c qemu+ssh://root@${SRC_URI}/system list | '/running/{print $2}'))
 for dom in "${domain[@]}"; do
  read -p "Select destination host. " DEST_URI
  virsh -c qemu+ssh://root@${SRC_URI}/system migrate \
  --domain $DOM \
  --live \
  --p2p \
  --tunnelled \
  --desturi qemu+ssh://root@${DEST_URI}/system \
  --persistent \
  --undefinesource \
  --verbose
 done
else
 echo "Invalid type..."
 $0
fi
$0
}

backup_guest () {
read -p "Enter the desired host: " KVM_HOST
# declare/initialize global array
guests=($(virsh -c qemu+ssh://root@${KVM_HOST}/system list | awk '/running/{print $2}'))

# global variables
SNAP_DEST=/mnt/snap/
CPY_DEST=/mnt/backup/

for n in "${guests[@]}"
do
   # initialize block storage array list and sets array variable
   blks=($(virsh -c qemu+ssh://root@${KVM_HOST}/system domblklist --domain ${n} | awk '/vda/{print $2}'))
   BLK_CALL=$(echo ${blks[0]})
   # create external snapshot
   virsh -c qemu+ssh://root@${KVM_HOST}/system snapshot-create-as --domain ${n} --name ${n} --diskspec vda,file=${SNAP_DEST}${n}.qcow2 \
   --disk-only --atomic --no-metadata --quiesce | logger -t guest_snap
   # syncs with backup destination
   rsync -azq ${BLK_CALL} ${CPY_DEST}${n} | logger -t guest_sync
   # active blockcommit
   virsh -c qemu+ssh://root@${KVM_HOST}/system blockcommit --domain ${n} vda --active --pivot --verbose | logger -t guest_pivot
   rm -rf ${SNAP_DEST}${n}.qcow2
done
$0
}

test_node(){
read -p "Enter the desired host: " KVM_HOST
read -p "Enter the name of guest: " GUEST
read -p "Enter OS 1). AlmaLinux 10 2). Debian 13 " OS_CHO
if [ $OS_CHO == 1 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool kvm_guests --name ${GUEST} --format qcow2 --capacity 500G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 echo "local-hostname: ${GUEST}" > ./meta-data
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 2 \
     --memory 2048 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_servers \
     --disk /mnt/kvm_guests/$GUEST \
     --cloud-init user-data=./user-data/cloud-init-configs/alma-node.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
elif [ $OS_CHO == 2 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool kvm_guests --name ${GUEST} --format qcow2 --capacity 500G --backing-vol /mnt/iso/debian-13-genericcloud-amd64-20250806-2196.qcow2 --backing-vol-format qcow2
 echo "local-hostname: ${GUEST}" > ./meta-data
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 2 \
     --memory 2048 \
     --os-variant debian13 \
     --boot uefi \
     --network bridge=_servers \
     --disk /mnt/kvm_guests/$GUEST \
     --cloud-init user-data=./user-data/debian-node.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole

fi
$0
}

pg_node(){
read -p "Enter the desired host: " KVM_HOST
read -p "Enter the name of guest: " GUEST
virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool kvm_guests --name ${GUEST} --format qcow2 --capacity 500G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
echo "local-hostname: ${GUEST}" > ./meta-data
virt-install \
    --connect qemu+ssh://root@${KVM_HOST}/system \
    --name $GUEST \
    --vcpus 4 \
    --memory 4096 \
    --os-variant almalinux9 \
    --boot uefi \
    --network bridge=_servers \
    --disk /mnt/kvm_guests/$GUEST \
    --cloud-init user-data=./user-data/postgres.yml,meta-data=./meta-data \
    --import \
    --autostart \
    --noautoconsole
$0
}

zed_lake_node(){
read -p "Enter the desired host: " KVM_HOST
read -p "Enter the name of guest: " GUEST
virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool kvm_guests --name ${GUEST} --format qcow2 --capacity 500G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
echo "local-hostname: ${GUEST}" > ./meta-data
virt-install \
    --connect qemu+ssh://root@${KVM_HOST}/system \
    --name $GUEST \
    --vcpus 4 \
    --memory 4096 \
    --os-variant almalinux9 \
    --boot uefi \
    --network bridge=_servers \
    --disk /mnt/kvm_guests/$GUEST \
    --cloud-init user-data=./user-data/zed-lake.yml,meta-data=./meta-data \
    --import \
    --autostart \
    --noautoconsole
$0
}

int_docker_node(){
read -p "Enter the desired host: " KVM_HOST
read -p "Enter the name of guest: " GUEST
read -p "1). Leader or 2). Worker: " NODE_TYPE
if [ $NODE_TYPE == 1 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool nvme_guests --name ${GUEST} --format qcow2 --capacity 100G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 echo "local-hostname: ${GUEST}" > ./meta-data
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 4 \
     --memory 4096 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_servers \
     --disk /mnt/nvme_guests/$GUEST \
     --cloud-init user-data=./user-data/docker-leader.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
elif [ $NODE_TYPE == 2 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool nvme_guests --name ${GUEST} --format qcow2 --capacity 100G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 echo "local-hostname: ${GUEST}" > ./meta-data
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 8 \
     --memory 8192 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_servers \
     --disk /mnt/nvme_guests/$GUEST \
     --cloud-init user-data=./user-data/docker-worker.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
else
 echo "Invalid type..."; $0
fi
$0
}

host_docker_node(){
read -p "Enter the desired host: " KVM_HOST
read -p "Enter the name of guest: " GUEST
read -p "1). Leader or 2). Worker: " NODE_TYPE
if [ $NODE_TYPE == 1 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool nvme_guests --name ${GUEST} --format qcow2 --capacity 100G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 echo "local-hostname: ${GUEST}" > ./meta-data
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 4 \
     --memory 4096 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_hosting \
     --disk /mnt/nvme_guests/$GUEST \
     --cloud-init user-data=./user-data//docker-leader.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
elif [ $NODE_TYPE == 2 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool nvme_guests --name ${GUEST} --format qcow2 --capacity 100G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 echo "local-hostname: ${GUEST}" > ./meta-data
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 8 \
     --memory 8192 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_hosting \
     --disk /mnt/nvme_guests/$GUEST \
     --cloud-init user-data=./user-data/docker-worker.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
else
 echo "Invalid type..."; $0
fi
$0
}

elastic_node(){
read -p "Enter the desired host: " KVM_HOST
read -p "Enter the name of guest: " GUEST
read -p "Elastic Node or Fleet Server (1=Node or 2=Fleet): " E_TYPE
echo "local-hostname: ${GUEST}" > ./meta-data
if [ $E_TYPE == 1 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool kvm_guests --name ${GUEST} --format qcow2 --capacity ${VOL_SIZE}G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 4 \
     --memory 8192 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_elastic \
     --disk /mnt/kvm_guests/$GUEST \
     --cloud-init user-data=./user-data//elastic-stack.yaml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
elif [ $E_TYPE == 2 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool kvm_guests --name ${GUEST} --format qcow2 --capacity 100G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 2 \
     --memory 2048 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_elastic \
     --disk /mnt/kvm_guests/$GUEST \
     --cloud-init user-data=./user-data//elastic-fleet.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
else
 echo "Invalid option..."; $0
fi
$0
}

kube_node(){
read -p "Enter the desired host: " KVM_HOST
read -p "Enter the name of guest: " GUEST
read -p "Dev or Prod (1=Prod or 2=Dev): " KUBE_E
echo "local-hostname: ${GUEST}" > ./meta-data
if [ ${KUBE_E} == 1 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool nvme_guests --name ${GUEST} --format qcow2 --capacity 100G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 2 \
     --memory 4096 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_hosting \
     --disk /mnt/nvme_guests/$GUEST \
     --cloud-init user-data=./user-data//k3s-install.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
elif [ ${KUBE_E} == 2 ]; then
 virsh -c qemu+ssh://root@${KVM_HOST}/system vol-create-as --pool nvme_guests --name ${GUEST} --format qcow2 --capacity 100G --backing-vol /mnt/iso/AlmaLinux-10-GenericCloud-latest.x86_64_v2.qcow2 --backing-vol-format qcow2
 virt-install \
     --connect qemu+ssh://root@${KVM_HOST}/system \
     --name $GUEST \
     --vcpus 4 \
     --memory 4096 \
     --os-variant almalinux9 \
     --boot uefi \
     --network bridge=_servers \
     --disk /mnt/nvme_guests/$GUEST \
     --cloud-init user-data=./user-data//k3s-install.yml,meta-data=./meta-data \
     --import \
     --autostart \
     --noautoconsole
else
 echo "Invalid option..."; $0
fi
$0
}

echo "Available options:
1). Create Basic Node
2). Create Internal Docker Node
3). Create Hosting Docker Node
4). Create Elastic Node
5). Create k3s node
6). Create kubeadm node
7). Postgresql node
8). Zed Lake node
a). Get info on a host
b). Domain migration
00). Exit
"
read -p "Select an option: " OPT

case "$OPT" in

    1) test_node
        ;;

    2) int_docker_node
        ;;

    3) host_docker_node
        ;;

    4) elastic_node
        ;;

    5) kube_node
        ;;

    6) kubeadm_node
        ;;

    7) pg_node
        ;;

    8) zed_lake_node
        ;;

    a|A) get_host_info
        ;;

    b|B) migrate_domain
        ;;

    00|0) echo "Exiting..."; exit 0
        ;;

    *) echo "Invalid option."; sleep 1; $0
        ;;
esac