diff --git a/tcp_tests/templates/virtual-mcp-pike-ovs/underlay.yaml b/tcp_tests/templates/virtual-mcp-pike-ovs/underlay.yaml
index e1c3ead..f90dceb 100644
--- a/tcp_tests/templates/virtual-mcp-pike-ovs/underlay.yaml
+++ b/tcp_tests/templates/virtual-mcp-pike-ovs/underlay.yaml
@@ -20,6 +20,9 @@
 {% set HOSTNAME_CTL03 = os_env('HOSTNAME_CTL03', 'ctl03.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CMP01 = os_env('HOSTNAME_CMP01', 'cmp01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CMP02 = os_env('HOSTNAME_CMP02', 'cmp02.' + DOMAIN_NAME) %}
+{% set HOSTNAME_MDB01 = os_env('HOSTNAME_MDB01', 'mdb01.' + DOMAIN_NAME) %}
+{% set HOSTNAME_MDB02 = os_env('HOSTNAME_MDB02', 'mdb02.' + DOMAIN_NAME) %}
+{% set HOSTNAME_MDB03 = os_env('HOSTNAME_MDB03', 'mdb03.' + DOMAIN_NAME) %}
 {% set HOSTNAME_GTW01 = os_env('HOSTNAME_GTW01', 'gtw01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_PRX01 = os_env('HOSTNAME_PRX01', 'prx01.' + DOMAIN_NAME) %}
 
@@ -40,6 +43,9 @@
             default_{{ HOSTNAME_CTL03 }}: +103
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
+            default_{{ HOSTNAME_MDB01 }}: +121
+            default_{{ HOSTNAME_MDB02 }}: +122
+            default_{{ HOSTNAME_MDB03 }}: +123
             default_{{ HOSTNAME_GTW01 }}: +110
             default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
@@ -57,6 +63,9 @@
             default_{{ HOSTNAME_CTL03 }}: +103
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
+            default_{{ HOSTNAME_MDB01 }}: +121
+            default_{{ HOSTNAME_MDB02 }}: +122
+            default_{{ HOSTNAME_MDB03 }}: +123
             default_{{ HOSTNAME_GTW01 }}: +110
             default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
@@ -74,6 +83,9 @@
             default_{{ HOSTNAME_CTL03 }}: +103
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
+            default_{{ HOSTNAME_MDB01 }}: +121
+            default_{{ HOSTNAME_MDB02 }}: +122
+            default_{{ HOSTNAME_MDB03 }}: +123
             default_{{ HOSTNAME_GTW01 }}: +110
             default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
@@ -91,6 +103,9 @@
             default_{{ HOSTNAME_CTL03 }}: +103
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
+            default_{{ HOSTNAME_MDB01 }}: +121
+            default_{{ HOSTNAME_MDB02 }}: +122
+            default_{{ HOSTNAME_MDB03 }}: +123
             default_{{ HOSTNAME_GTW01 }}: +110
             default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
@@ -289,6 +304,93 @@
               interfaces: *interfaces
               network_config: *network_config
 
+          - name: {{ HOSTNAME_MDB01 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 8192
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: mcp_ubuntu_1604_image
+                  format: qcow2
+                - name: cinder
+                  capacity: 50
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
+          - name: {{ HOSTNAME_MDB02 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 8192
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: mcp_ubuntu_1604_image
+                  format: qcow2
+                - name: cinder
+                  capacity: 50
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
+          - name: {{ HOSTNAME_MDB03 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 8192
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: mcp_ubuntu_1604_image
+                  format: qcow2
+                - name: cinder
+                  capacity: 50
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
           - name: {{ HOSTNAME_PRX01 }}
             role: salt_minion
             params: