diff --git a/de/heat-templates/fragments/SrvInstancesBM.yaml b/de/heat-templates/fragments/SrvInstancesBM.yaml
index 06f47c1..3cb80ee 100644
--- a/de/heat-templates/fragments/SrvInstancesBM.yaml
+++ b/de/heat-templates/fragments/SrvInstancesBM.yaml
@@ -72,7 +72,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../scripts/instance_boot.sh }
+          template: { get_file: ../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
diff --git a/de/heat-templates/fragments/SrvInstancesBMCeph.yaml b/de/heat-templates/fragments/SrvInstancesBMCeph.yaml
index 7c88e3d..ad2a702 100644
--- a/de/heat-templates/fragments/SrvInstancesBMCeph.yaml
+++ b/de/heat-templates/fragments/SrvInstancesBMCeph.yaml
@@ -89,7 +89,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../scripts/instance_boot.sh }
+          template: { get_file: ../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
diff --git a/de/heat-templates/fragments/SrvInstancesBMCephOSD.yaml b/de/heat-templates/fragments/SrvInstancesBMCephOSD.yaml
index f2f4cd2..0c92f7a 100644
--- a/de/heat-templates/fragments/SrvInstancesBMCephOSD.yaml
+++ b/de/heat-templates/fragments/SrvInstancesBMCephOSD.yaml
@@ -110,7 +110,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../scripts/instance_boot.sh }
+          template: { get_file: ../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
diff --git a/de/heat-templates/fragments/SrvInstancesVM.yaml b/de/heat-templates/fragments/SrvInstancesVM.yaml
index cb37946..374ec92 100644
--- a/de/heat-templates/fragments/SrvInstancesVM.yaml
+++ b/de/heat-templates/fragments/SrvInstancesVM.yaml
@@ -82,6 +82,9 @@
   kubectl_version:
     type: string
     default: 1.18.8
+  devops_utils_refspec:
+    type: string
+    default: 'master'
 
 resources:
 
@@ -91,7 +94,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../scripts/instance_boot.sh }
+          template: { get_file: ../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
@@ -113,6 +116,7 @@
             $single_node: { get_param: single_node }
             $secure_overlay_enabled: { get_param: secure_overlay_enabled }
             $kubectl_version: { get_param: kubectl_version }
+            $devops_utils_refspec: { get_param: devops_utils_refspec }
 
   inject_files:
     type: "OS::Heat::CloudConfig"
diff --git a/de/heat-templates/fragments/SrvInstancesVMCeph.yaml b/de/heat-templates/fragments/SrvInstancesVMCeph.yaml
index 0e3a99d..320b564 100644
--- a/de/heat-templates/fragments/SrvInstancesVMCeph.yaml
+++ b/de/heat-templates/fragments/SrvInstancesVMCeph.yaml
@@ -91,6 +91,9 @@
   kubectl_version:
     type: string
     default: 1.18.8
+  devops_utils_refspec:
+    type: string
+    default: 'master'
 
 resources:
 
@@ -100,7 +103,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../scripts/instance_boot.sh }
+          template: { get_file: ../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
@@ -126,6 +129,7 @@
             $ironic_baremetal_tunnel_cidr: { get_param: ironic_baremetal_tunnel_cidr }
             $ironic_mt_enabled: { get_param: ironic_mt_enabled }
             $kubectl_version: { get_param: kubectl_version }
+            $devops_utils_refspec: { get_param: devops_utils_refspec }
 
   inject_files:
     type: "OS::Heat::CloudConfig"
diff --git a/de/heat-templates/fragments/SrvInstancesVMCephOSD.yaml b/de/heat-templates/fragments/SrvInstancesVMCephOSD.yaml
index cc0e841..dff89f5 100644
--- a/de/heat-templates/fragments/SrvInstancesVMCephOSD.yaml
+++ b/de/heat-templates/fragments/SrvInstancesVMCephOSD.yaml
@@ -124,6 +124,9 @@
   kubectl_version:
     type: string
     default: 1.18.8
+  devops_utils_refspec:
+    type: string
+    default: 'master'
 
 resources:
 
@@ -133,7 +136,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../scripts/instance_boot.sh }
+          template: { get_file: ../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
@@ -168,6 +171,7 @@
             $lvm_loop_device_size: { get_param: lvm_loop_device_size }
             $cinder_lvm_loop_device_size: { get_param: cinder_lvm_loop_device_size }
             $kubectl_version: { get_param: kubectl_version }
+            $devops_utils_refspec: { get_param: devops_utils_refspec }
 
   inject_files:
     type: "OS::Heat::CloudConfig"
diff --git a/de/heat-templates/fragments/multirack/SrvInstancesVM.yaml b/de/heat-templates/fragments/multirack/SrvInstancesVM.yaml
index cdaa49e..dc437b2 100644
--- a/de/heat-templates/fragments/multirack/SrvInstancesVM.yaml
+++ b/de/heat-templates/fragments/multirack/SrvInstancesVM.yaml
@@ -67,7 +67,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../../scripts/instance_boot.sh }
+          template: { get_file: ../../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
diff --git a/de/heat-templates/fragments/multirack/SrvInstancesVMCeph.yaml b/de/heat-templates/fragments/multirack/SrvInstancesVMCeph.yaml
index 5adf1f7..288d03c 100644
--- a/de/heat-templates/fragments/multirack/SrvInstancesVMCeph.yaml
+++ b/de/heat-templates/fragments/multirack/SrvInstancesVMCeph.yaml
@@ -96,7 +96,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../../scripts/instance_boot.sh }
+          template: { get_file: ../../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
diff --git a/de/heat-templates/fragments/multirack/SrvInstancesVMRack.yaml b/de/heat-templates/fragments/multirack/SrvInstancesVMRack.yaml
index 9e09613..8efb30a 100644
--- a/de/heat-templates/fragments/multirack/SrvInstancesVMRack.yaml
+++ b/de/heat-templates/fragments/multirack/SrvInstancesVMRack.yaml
@@ -61,7 +61,7 @@
       group: ungrouped
       config:
         str_replace:
-          template: { get_file: ../../scripts/instance_boot.sh }
+          template: { get_file: ../../scripts/launch.sh }
           params:
             $node_type:  { get_param: node_type }
             $kubernetes_installer: { get_param: kubernetes_installer }
diff --git a/de/heat-templates/scripts/instance_boot.sh b/de/heat-templates/scripts/functions.sh
similarity index 77%
rename from de/heat-templates/scripts/instance_boot.sh
rename to de/heat-templates/scripts/functions.sh
index 3c3431e..404c0bc 100644
--- a/de/heat-templates/scripts/instance_boot.sh
+++ b/de/heat-templates/scripts/functions.sh
@@ -5,64 +5,20 @@
 set -a
 
 # ensure we don't re-source this in the same environment
-[[ -z "$_INSTALL_SCRIPT" ]] || return 0
-declare -r -g _INSTALL_SCRIPT=1
+[[ -z "$_FUNCTIONS_SCRIPT" ]] || return 0
+declare -r -g _FUNCTIONS_SCRIPT=1
 
-#
-# Variables in this block are passed from heat template
-#
-CONTROL_NETWORK_CIDR=${CONTROL_NETWORK_CIDR:-$control_network_cidr}
-PUBLIC_INTERFACE=${PUBLIC_INTERFACE:-$private_floating_interface}
-PUBLIC_INTERFACE_IP=${PUBLIC_INTERFACE_IP:-$private_floating_interface_ip}
-PUBLIC_INTERFACE_CIDR=${PUBLIC_INTERFACE_CIDR:-$private_floating_network_cidr}
 PUBLIC_INTERFACE_NETMASK=$(echo ${PUBLIC_INTERFACE_CIDR} | cut -d'/' -f2)
-DEFAULT_INTERFACE=${DEFAULT_INTERFACE:-$default_interface}
-STORAGE_BACKEND_INTERFACE=${STORAGE_BACKEND_INTERFACE:-$storage_backend_interface}
-STORAGE_BACKEND_INTERFACE_IP=${STORAGE_BACKEND_INTERFACE_IP:-$storage_backend_network_interface_ip}
-STORAGE_BACKEND_NETWORK=${STORAGE_BACKEND_NETWORK:-$storage_backend_network_cidr}
 STORAGE_BACKEND_NETWORK_NETMASK=$(echo ${STORAGE_BACKEND_NETWORK} | cut -d'/' -f2)
-STORAGE_FRONTEND_INTERFACE=${STORAGE_FRONTEND_INTERFACE:-$storage_frontend_interface}
-STORAGE_FRONTEND_INTERFACE_IP=${STORAGE_FRONTEND_INTERFACE_IP:-$storage_frontend_network_interface_ip}
-STORAGE_FRONTEND_NETWORK=${STORAGE_FRONTEND_NETWORK:-$storage_frontend_network_cidr}
 STORAGE_FRONTEND_NETWORK_NETMASK=$(echo ${STORAGE_FRONTEND_NETWORK} | cut -d'/' -f2)
-
-IRONIC_BAREMETAL_NETWORK=${IRONIC_BAREMETAL_NETWORK:-$ironic_baremetal_network_cidr}
 IRONIC_BAREMETAL_INTERFACE_IP=${IRONIC_BAREMETAL_INTERFACE_IP:-$ironic_baremetal_interface_ip}
 IRONIC_BAREMETAL_NETWORK_NETMASK=$(echo ${IRONIC_BAREMETAL_NETWORK} | cut -d'/' -f2)
 IRONIC_BAREMETAL_INTERFACE=$(ip route |grep ${IRONIC_BAREMETAL_NETWORK} | awk '/ src / {print $3}')
-IRONIC_BAREMETAL_TUNNEL_NETWORK=${IRONIC_BAREMETAL_TUNNEL_NETWORK:-$ironic_baremetal_tunnel_cidr}
-TUNNEL_INTERFACE_IP=${TUNNEL_INTERFACE_IP:-$tunnel_interface_ip}
-FRR_BGP_NEIGHBORS=${FRR_BGP_NEIGHBORS:-$frr_bgp_neighbors}
-FRR_EVPN_TUNNELS_RANGE=${FRR_EVPN_TUNNELS_RANGE:-$frr_evpn_tunnels_range}
-FRR_EVPN_VXLAN_DST_PORT=${FRR_EVPN_VXLAN_DST_PORT:-$frr_evpn_vxlan_dst_port}
 TUNNEL_INTERFACE_NETWORK_NETMASK=$(ip -o addr show |grep -w ${TUNNEL_INTERFACE_IP} | awk '{print $4}' |awk -F '/' '{print $2}')
 TUNNEL_INTERFACE=$(ip -o addr show |grep -w ${TUNNEL_INTERFACE_IP}/${TUNNEL_INTERFACE_NETWORK_NETMASK} | awk '{print $2}')
-
-NODE_TYPE=${NODE_TYPE:-$node_type}
-KUBERNETES_INSTALLER=${KUBERNETES_INSTALLER:-$kubernetes_installer}
-UCP_MASTER_HOST=${UCP_MASTER_HOST:-$ucp_master_host}
-NODE_METADATA=${NODE_METADATA:-'$node_metadata'}
-DOCKER_EE_URL=${DOCKER_EE_URL:-$docker_ee_url}
-DOCKER_EE_RELEASE=${DOCKER_EE_RELEASE:-$docker_ee_release}
-DOCKER_EE_PACKAGES=${DOCKER_EE_PACKAGES:-$docker_ee_packages}
-DOCKER_UCP_IMAGE=${DOCKER_UCP_IMAGE:-$docker_ucp_image}
-BINARY_BASE_URL=${BINARY_BASE_URL:-$binary_base_url}
-UCP_DOCKER_SWARM_DATA_PORT=${UCP_DOCKER_SWARM_DATA_PORT:-$docker_ucp_swarm_data_port}
-FLOATING_NETWORK_PREFIXES=${FLOATING_NETWORK_PREFIXES:-$private_floating_network_cidr}
-IRONIC_MT_ENABLED=${IRONIC_MT_ENABLED:-$ironic_mt_enabled}
 IRONIC_BAREMETAL_NETWORK_PREFIX=$(sed 's/[0-9]*\/[0-9]*$//' <<< $IRONIC_BAREMETAL_NETWORK)
 IRONIC_BAREMETAL_TUNNEL_NETWORK_PREFIX=$(sed 's/[0-9]*\/[0-9]*$//' <<< $IRONIC_BAREMETAL_TUNNEL_NETWORK)
-
-HUGE_PAGES=${HUGE_PAGES:-$huge_pages}
-TUNGSTENFABRIC_ENABLED=${TUNGSTENFABRIC_ENABLED:-$tungstenfabric_enabled}
-SINGLE_NODE=${SINGLE_NODE:-$single_node}
-DOCKER_DEFAULT_ADDRESS_POOL=${DOCKER_DEFAULT_ADDRESS_POOL:-$docker_default_address_pool}
-LVM_LOOP_DEVICE_SIZE=${LVM_LOOP_DEVICE_SIZE:-$lvm_loop_device_size}
-CINDER_LVM_LOOP_DEVICE_SIZE=${CINDER_LVM_LOOP_DEVICE_SIZE:-$cinder_lvm_loop_device_size}
-SECURE_OVERLAY_ENABLED=${SECURE_OVERLAY_ENABLED:-$secure_overlay_enabled}
-#
-# End of block
-#
+STORAGE_FRONTEND_NETWORK_NETMASK=$(echo ${STORAGE_FRONTEND_NETWORK} | cut -d'/' -f2)
 DOCKER_DEFAULT_ADDRESS_POOL=${DOCKER_DEFAULT_ADDRESS_POOL:-10.10.1.0/16}
 # DOCKER_DEFAULT_ADDRESS_SIZE have to be less then netmask in DOCKER_DEFAULT_ADDRESS_POOL because
 # to the fact that actual netmask for docker_gwbridge is given from it
@@ -97,7 +53,6 @@
 UCP_USERNAME=${UCP_USERNAME:-admin}
 UCP_PASSWORD=${UCP_PASSWORD:-administrator}
 OS_CODENAME=$(lsb_release -c -s)
-KUBECTL_VERSION=${KUBECTL_VERSION:-$kubectl_version}
 NODE_DEPLOYMENT_RETRIES=${NODE_DEPLOYMENT_RETRIES:-15}
 FLOATING_NETWORK_PREFIXES=${FLOATING_NETWORK_PREFIXES:-10.11.12.0/24}
 PUBLIC_INTERFACE=${PUBLIC_INTERFACE:-ens4}
@@ -184,30 +139,6 @@
     mount -a
 }
 
-function wait_condition_send {
-    local status=${1:-SUCCESS}
-    local reason=${2:-\"empty\"}
-    local data=${3:-\"empty\"}
-    local data_binary="{\"status\": \"$status\", \"reason\": \"$reason\", \"data\": $data}"
-    echo "Trying to send signal to wait condition 5 times: $data_binary"
-    WAIT_CONDITION_NOTIFY_EXIT_CODE=2
-    i=0
-    while (( ${WAIT_CONDITION_NOTIFY_EXIT_CODE} != 0 && ${i} < 5 )); do
-        $wait_condition_notify -k --data-binary "$data_binary" && WAIT_CONDITION_NOTIFY_EXIT_CODE=0 || WAIT_CONDITION_NOTIFY_EXIT_CODE=2
-        i=$((i + 1))
-        sleep 1
-    done
-    if (( ${WAIT_CONDITION_NOTIFY_EXIT_CODE} !=0 && "${status}" == "SUCCESS" ))
-    then
-        status="FAILURE"
-        reason="Can't reach metadata service to report about SUCCESS."
-    fi
-    if [ "$status" == "FAILURE" ]; then
-        exit 1
-    fi
-}
-
-
 function configure_atop {
     sed -i 's/INTERVAL=600/INTERVAL=60/' /usr/share/atop/atop.daily
     systemctl restart atop
@@ -1034,163 +965,3 @@
 EOF
     udevadm control --reload-rules && udevadm trigger
 }
-
-# Exit on any errors
-function handle_exit {
-    if [ $? != 0 ] ; then
-        wait_condition_send "FAILURE" "Script terminated with an error."
-    fi
-}
-trap handle_exit EXIT
-
-if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
-    case "$NODE_TYPE" in
-        # Please keep the "prepare_metadata_files", "disable-rp-filter", "network_config" and "prepare_network" functions
-        # at the very beginning in the same order.
-        ucp)
-            setup_bind_mounts
-            wait_for_external_network
-            prepare_metadata_files
-            disable_rp_filter
-            network_config
-            prepare_network
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                prepare_docker_config
-            fi
-            install_required_packages
-            install_kubectl
-            configure_ntp
-            configure_atop
-            workaround_default_forward_policy
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                install_docker
-                swarm_init
-                create_ucp_config
-                cache_images
-                install_ucp
-                download_bundles
-                rm_ucp_config
-            elif [[ "${KUBERNETES_INSTALLER}" == "k0s" ]]; then
-                download_k0s
-                install_k0s
-            fi
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                wait_for_node
-                set_node_labels
-                collect_ceph_metadata
-                configure_contrack
-                disable_iptables_for_bridges
-            fi
-            if [[ "${SINGLE_NODE}" == true ]]; then
-                nested_virt_config
-                disable_master_taint
-                collect_interfaces_metadata
-            fi
-            cron_disable_calico_offloading
-            ;;
-        master)
-            setup_bind_mounts
-            wait_for_external_network
-            nested_virt_config
-            prepare_metadata_files
-            disable_rp_filter
-            network_config
-            prepare_network
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                prepare_docker_config
-            fi
-            install_required_packages
-            install_kubectl
-            configure_ntp
-            configure_atop
-            workaround_default_forward_policy
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                install_docker
-                cache_images
-                download_bundles
-                join_node manager
-            fi
-            wait_for_node
-            set_node_labels
-            collect_ceph_metadata
-            configure_contrack
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                disable_iptables_for_bridges
-            fi
-            collect_interfaces_metadata
-            cron_disable_calico_offloading
-            increase_iscsi_timeout
-            ;;
-        worker)
-            setup_bind_mounts
-            wait_for_external_network
-            if [[ "${CONFIGURE_HUGE_PAGES}" == true ]]; then
-                configure_huge_pages
-            fi
-            nested_virt_config
-            prepare_metadata_files
-            disable_rp_filter
-            network_config
-            prepare_network
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                prepare_docker_config
-            fi
-            install_required_packages
-            install_kubectl
-            enable_iscsi
-            configure_ntp
-            configure_atop
-            workaround_default_forward_policy
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                install_docker
-                cache_images
-                download_bundles
-                join_node worker
-            elif [[ "${KUBERNETES_INSTALLER}" == "k0s" ]]; then
-                download_k0s
-                download_k8s_metadata
-                join_k0s_node worker
-            fi
-            wait_for_node
-            set_node_labels
-            collect_ceph_metadata
-            configure_contrack
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                disable_iptables_for_bridges
-            fi
-            collect_interfaces_metadata
-            configure_lvm
-            cron_disable_calico_offloading
-            increase_iscsi_timeout
-            ;;
-        frr)
-            wait_for_external_network
-            prepare_metadata_files
-            disable_rp_filter
-            network_config
-            prepare_network
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                prepare_docker_config
-            fi
-            install_required_packages
-            configure_ntp
-            configure_atop
-            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
-                install_docker
-                cache_images
-                download_bundles
-            fi
-            workaround_default_forward_policy
-            configure_contrack
-            disable_iptables_for_bridges
-            install_frr
-            cron_disable_calico_offloading
-            increase_iscsi_timeout
-            ;;
-        *)
-            echo "Usage: $0 {ucp|master|worker}"
-            exit 1
-    esac
-
-    wait_condition_send "SUCCESS" "Instance successfuly started." "${HW_METADATA}"
-fi
diff --git a/de/heat-templates/scripts/launch.sh b/de/heat-templates/scripts/launch.sh
new file mode 100644
index 0000000..09c4068
--- /dev/null
+++ b/de/heat-templates/scripts/launch.sh
@@ -0,0 +1,267 @@
+#!/bin/bash
+set -x
+set -e
+# allow access to the local variables from prepare-metadata.py
+set -a
+
+# ensure we don't re-source this in the same environment
+[[ -z "$_INSTALL_SCRIPT" ]] || return 0
+declare -r -g _INSTALL_SCRIPT=1
+
+#
+# Variables in this block are passed from heat template
+#
+CONTROL_NETWORK_CIDR=${CONTROL_NETWORK_CIDR:-$control_network_cidr}
+PUBLIC_INTERFACE=${PUBLIC_INTERFACE:-$private_floating_interface}
+PUBLIC_INTERFACE_IP=${PUBLIC_INTERFACE_IP:-$private_floating_interface_ip}
+PUBLIC_INTERFACE_CIDR=${PUBLIC_INTERFACE_CIDR:-$private_floating_network_cidr}
+DEFAULT_INTERFACE=${DEFAULT_INTERFACE:-$default_interface}
+STORAGE_BACKEND_INTERFACE=${STORAGE_BACKEND_INTERFACE:-$storage_backend_interface}
+STORAGE_BACKEND_INTERFACE_IP=${STORAGE_BACKEND_INTERFACE_IP:-$storage_backend_network_interface_ip}
+STORAGE_BACKEND_NETWORK=${STORAGE_BACKEND_NETWORK:-$storage_backend_network_cidr}
+STORAGE_FRONTEND_INTERFACE=${STORAGE_FRONTEND_INTERFACE:-$storage_frontend_interface}
+STORAGE_FRONTEND_INTERFACE_IP=${STORAGE_FRONTEND_INTERFACE_IP:-$storage_frontend_network_interface_ip}
+STORAGE_FRONTEND_NETWORK=${STORAGE_FRONTEND_NETWORK:-$storage_frontend_network_cidr}
+STORAGE_FRONTEND_NETWORK_NETMASK=$(echo ${STORAGE_FRONTEND_NETWORK} | cut -d'/' -f2)
+
+IRONIC_BAREMETAL_NETWORK=${IRONIC_BAREMETAL_NETWORK:-$ironic_baremetal_network_cidr}
+IRONIC_BAREMETAL_INTERFACE_IP=${IRONIC_BAREMETAL_INTERFACE_IP:-$ironic_baremetal_interface_ip}
+IRONIC_BAREMETAL_TUNNEL_NETWORK=${IRONIC_BAREMETAL_TUNNEL_NETWORK:-$ironic_baremetal_tunnel_cidr}
+TUNNEL_INTERFACE_IP=${TUNNEL_INTERFACE_IP:-$tunnel_interface_ip}
+FRR_BGP_NEIGHBORS=${FRR_BGP_NEIGHBORS:-$frr_bgp_neighbors}
+FRR_EVPN_TUNNELS_RANGE=${FRR_EVPN_TUNNELS_RANGE:-$frr_evpn_tunnels_range}
+FRR_EVPN_VXLAN_DST_PORT=${FRR_EVPN_VXLAN_DST_PORT:-$frr_evpn_vxlan_dst_port}
+
+NODE_TYPE=${NODE_TYPE:-$node_type}
+KUBERNETES_INSTALLER=${KUBERNETES_INSTALLER:-$kubernetes_installer}
+UCP_MASTER_HOST=${UCP_MASTER_HOST:-$ucp_master_host}
+NODE_METADATA=${NODE_METADATA:-'$node_metadata'}
+DOCKER_EE_URL=${DOCKER_EE_URL:-$docker_ee_url}
+DOCKER_EE_RELEASE=${DOCKER_EE_RELEASE:-$docker_ee_release}
+DOCKER_EE_PACKAGES=${DOCKER_EE_PACKAGES:-$docker_ee_packages}
+DOCKER_UCP_IMAGE=${DOCKER_UCP_IMAGE:-$docker_ucp_image}
+BINARY_BASE_URL=${BINARY_BASE_URL:-$binary_base_url}
+UCP_DOCKER_SWARM_DATA_PORT=${UCP_DOCKER_SWARM_DATA_PORT:-$docker_ucp_swarm_data_port}
+FLOATING_NETWORK_PREFIXES=${FLOATING_NETWORK_PREFIXES:-$private_floating_network_cidr}
+IRONIC_MT_ENABLED=${IRONIC_MT_ENABLED:-$ironic_mt_enabled}
+
+HUGE_PAGES=${HUGE_PAGES:-$huge_pages}
+TUNGSTENFABRIC_ENABLED=${TUNGSTENFABRIC_ENABLED:-$tungstenfabric_enabled}
+SINGLE_NODE=${SINGLE_NODE:-$single_node}
+DOCKER_DEFAULT_ADDRESS_POOL=${DOCKER_DEFAULT_ADDRESS_POOL:-$docker_default_address_pool}
+LVM_LOOP_DEVICE_SIZE=${LVM_LOOP_DEVICE_SIZE:-$lvm_loop_device_size}
+CINDER_LVM_LOOP_DEVICE_SIZE=${CINDER_LVM_LOOP_DEVICE_SIZE:-$cinder_lvm_loop_device_size}
+SECURE_OVERLAY_ENABLED=${SECURE_OVERLAY_ENABLED:-$secure_overlay_enabled}
+KUBECTL_VERSION=${KUBECTL_VERSION:-$kubectl_version}
+
+DEVOPS_UTILS_REFSPEC=${DEVOPS_UTILS_REFSPEC:-$devops_utils_refspec}
+
+#
+# End of block
+#
+
+DEVOPS_UTILS_REPO=${DEVOPS_UTILS_REPO:-'https://gerrit.mcp.mirantis.com/oscore-tools/devops-utils'}
+DEVOPS_UTILS_REFSPEC=${DEVOPS_UTILS_REFSPEC:-'master'}
+DEVOPS_UTILS_DST=/usr/share/devops-utils
+
+#Wait external network
+sed -i 's/#DNS=/DNS=4.2.2.1/g' /etc/systemd/resolved.conf
+systemctl restart systemd-resolved
+curl --connect-timeout 10 --retry 6 --retry-delay 10 ${DEVOPS_UTILS_REPO} || (sleep 1; /bin/false)
+
+git clone ${DEVOPS_UTILS_REPO} ${DEVOPS_UTILS_DST}
+pushd ${DEVOPS_UTILS_DST}
+if echo "$DEVOPS_UTILS_REFSPEC" |grep -q "^refs"; then
+    git fetch ${DEVOPS_UTILS_REPO} ${DEVOPS_UTILS_REFSPEC}
+    git checkout FETCH_HEAD
+else
+    git checkout ${DEVOPS_UTILS_REFSPEC}
+fi
+git log --oneline -10
+popd
+
+
+source ${DEVOPS_UTILS_DST}/de/heat-templates/scripts/functions.sh
+
+function wait_condition_send {
+    local status=${1:-SUCCESS}
+    local reason=${2:-\"empty\"}
+    local data=${3:-\"empty\"}
+    local data_binary="{\"status\": \"$status\", \"reason\": \"$reason\", \"data\": $data}"
+    echo "Trying to send signal to wait condition 5 times: $data_binary"
+    WAIT_CONDITION_NOTIFY_EXIT_CODE=2
+    i=0
+    while (( ${WAIT_CONDITION_NOTIFY_EXIT_CODE} != 0 && ${i} < 5 )); do
+        $wait_condition_notify -k --data-binary "$data_binary" && WAIT_CONDITION_NOTIFY_EXIT_CODE=0 || WAIT_CONDITION_NOTIFY_EXIT_CODE=2
+        i=$((i + 1))
+        sleep 1
+    done
+    if (( ${WAIT_CONDITION_NOTIFY_EXIT_CODE} !=0 && "${status}" == "SUCCESS" ))
+    then
+        status="FAILURE"
+        reason="Can't reach metadata service to report about SUCCESS."
+    fi
+    if [ "$status" == "FAILURE" ]; then
+        exit 1
+    fi
+}
+
+# Exit on any errors
+function handle_exit {
+    if [ $? != 0 ] ; then
+        wait_condition_send "FAILURE" "Script terminated with an error."
+    fi
+}
+trap handle_exit EXIT
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+    case "$NODE_TYPE" in
+        # Please keep the "prepare_metadata_files", "disable-rp-filter", "network_config" and "prepare_network" functions
+        # at the very beginning in the same order.
+        ucp)
+            setup_bind_mounts
+            wait_for_external_network
+            prepare_metadata_files
+            disable_rp_filter
+            network_config
+            prepare_network
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                prepare_docker_config
+            fi
+            install_required_packages
+            install_kubectl
+            configure_ntp
+            configure_atop
+            workaround_default_forward_policy
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                install_docker
+                swarm_init
+                create_ucp_config
+                cache_images
+                install_ucp
+                download_bundles
+                rm_ucp_config
+            elif [[ "${KUBERNETES_INSTALLER}" == "k0s" ]]; then
+                download_k0s
+                install_k0s
+            fi
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                wait_for_node
+                set_node_labels
+                collect_ceph_metadata
+                configure_contrack
+                disable_iptables_for_bridges
+            fi
+            if [[ "${SINGLE_NODE}" == true ]]; then
+                nested_virt_config
+                disable_master_taint
+                collect_interfaces_metadata
+            fi
+            cron_disable_calico_offloading
+            ;;
+        master)
+            setup_bind_mounts
+            wait_for_external_network
+            nested_virt_config
+            prepare_metadata_files
+            disable_rp_filter
+            network_config
+            prepare_network
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                prepare_docker_config
+            fi
+            install_required_packages
+            install_kubectl
+            configure_ntp
+            configure_atop
+            workaround_default_forward_policy
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                install_docker
+                cache_images
+                download_bundles
+                join_node manager
+            fi
+            wait_for_node
+            set_node_labels
+            collect_ceph_metadata
+            configure_contrack
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                disable_iptables_for_bridges
+            fi
+            collect_interfaces_metadata
+            cron_disable_calico_offloading
+            increase_iscsi_timeout
+            ;;
+        worker)
+            setup_bind_mounts
+            wait_for_external_network
+            if [[ "${CONFIGURE_HUGE_PAGES}" == true ]]; then
+                configure_huge_pages
+            fi
+            nested_virt_config
+            prepare_metadata_files
+            disable_rp_filter
+            network_config
+            prepare_network
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                prepare_docker_config
+            fi
+            install_required_packages
+            install_kubectl
+            enable_iscsi
+            configure_ntp
+            configure_atop
+            workaround_default_forward_policy
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                install_docker
+                cache_images
+                download_bundles
+                join_node worker
+            elif [[ "${KUBERNETES_INSTALLER}" == "k0s" ]]; then
+                download_k0s
+                download_k8s_metadata
+                join_k0s_node worker
+            fi
+            wait_for_node
+            set_node_labels
+            collect_ceph_metadata
+            configure_contrack
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                disable_iptables_for_bridges
+            fi
+            collect_interfaces_metadata
+            configure_lvm
+            cron_disable_calico_offloading
+            increase_iscsi_timeout
+            ;;
+        frr)
+            wait_for_external_network
+            prepare_metadata_files
+            disable_rp_filter
+            network_config
+            prepare_network
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                prepare_docker_config
+            fi
+            install_required_packages
+            configure_ntp
+            configure_atop
+            if [[ "${KUBERNETES_INSTALLER}" == "ucp" ]]; then
+                install_docker
+                cache_images
+                download_bundles
+            fi
+            workaround_default_forward_policy
+            configure_contrack
+            disable_iptables_for_bridges
+            install_frr
+            cron_disable_calico_offloading
+            increase_iscsi_timeout
+            ;;
+        *)
+            echo "Usage: $0 {ucp|master|worker}"
+            exit 1
+    esac
+
+    wait_condition_send "SUCCESS" "Instance successfuly started." "${HW_METADATA}"
+fi
diff --git a/de/heat-templates/top.yaml b/de/heat-templates/top.yaml
index dfbb370..e4dccf7 100644
--- a/de/heat-templates/top.yaml
+++ b/de/heat-templates/top.yaml
@@ -401,6 +401,9 @@
   vmx_enabled:
     type: boolean
     default: false
+  devops_utils_refspec:
+    type: string
+    default: 'master'
 
 conditions:
   aio_deploy:
@@ -562,6 +565,7 @@
       availability_zone: { get_param: availability_zone }
       secure_overlay_enabled: { get_param: secure_overlay_enabled }
       kubectl_version: { get_param: kubectl_version }
+      devops_utils_refspec: { get_param: devops_utils_refspec }
 
   masters:
     type: OS::Heat::ResourceGroup
@@ -597,6 +601,7 @@
           hardware_metadata: { get_param: hardware_metadata}
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   workers:
     type: OS::Heat::ResourceGroup
@@ -650,6 +655,7 @@
           cinder_lvm_loop_device_size: { get_param: cmp_cinder_lvm_loop_device_size }
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   cmps:
     type: OS::Heat::ResourceGroup
@@ -703,6 +709,7 @@
           cinder_lvm_loop_device_size: { get_param: cmp_cinder_lvm_loop_device_size }
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   acmps:
     type: OS::Heat::ResourceGroup
@@ -757,6 +764,7 @@
           cinder_lvm_loop_device_size: { get_param: acmp_cinder_lvm_loop_device_size }
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   gtws:
     type: OS::Heat::ResourceGroup
@@ -801,6 +809,7 @@
           hardware_metadata: { get_param: hardware_metadata}
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   lmas:
     type: OS::Heat::ResourceGroup
@@ -845,6 +854,7 @@
           hardware_metadata: { get_param: hardware_metadata}
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   osds:
     type: OS::Heat::ResourceGroup
@@ -897,6 +907,7 @@
           num_volumes: { get_param: volumes_per_osd_instance }
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   frrs:  # spares for osds/cmps
     type: OS::Heat::ResourceGroup
@@ -999,6 +1010,7 @@
           hardware_metadata: { get_param: hardware_metadata}
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   vbmcs:
     type: OS::Heat::ResourceGroup
@@ -1043,6 +1055,7 @@
           hardware_metadata: { get_param: hardware_metadata}
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   tsrvs:
     type: OS::Heat::ResourceGroup
@@ -1087,6 +1100,7 @@
           hardware_metadata: { get_param: hardware_metadata}
           availability_zone: { get_param: availability_zone }
           kubectl_version: { get_param: kubectl_version }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
 outputs:
   ucp_ips: