Configuring A/A Tier-0 Gateway with two VRFs and Tier-1 Gateways with NSX-T Terraform Provider

September 11, 2020by Raymond de Jong in Blog, NSX, Terraform, VMware tagged NSX, NSX-T, Terraform, VMware

This blog post and demo shows how you can use the Terraform NSX-T Provider to quickly configure an Active-Active Tier-0 with two VRFs and attached Tier-1 Gateways.

Supported with Terraform on a NSX-T Provider 3.0.1 https://github.com/vmware/terraform-provider-nsxt

This Terraform NSX-T Provider example can be useful to quickly deploy a typical VRF multi-tenant topology on a NSX-T environment to test and configures the following NSX-T objects:

Active-Active Tier-0 Gateway
Uplink interfaces on the Tier-0 Gateway and VRFs
Two Tier-0 VRFs
Two Tier-1 Gateways
BGP Configuration on the Tier-0 Gateway
BGP Neighbor Configuration on VRF
Tier-1 Gateways, one per Tenant VRF.
Route Advertisement rule on the Tier-1
Segments connected to Tier-1
VLAN101 and Trunk Segment for north-south traffic and BGP peering with ToR-A
VLAN102 and Trunk Segment for north-south traffic and BGP peering with ToR-B
Security Groups for the Web, App and DB tiers based on Tags
Security Groups for Red and Blue Tenant Virtual Machines
Custom Service (TCP 8443) for Web to App communication.
Some example Distributed Firewall Rules for accessing the Application and communication between the tiers, including a default deny rule and using Applied To.

Logical diagram of the topology:

Tier-0 Gateway with VRF

Requirements:

NSX Manager(s) ready and configured
Overlay and VLAN Transport Zones configured
Two Edge Nodes configured
Edge Cluster configured with the two Edge Nodes as members.

Below is the variables.tf file:

# Variables
# NSX Manager
variable "nsx_manager" {
    default = "10.29.12.206"
}

# Username & Password for NSX-T Manager
  variable "username" {
  default = "admin"
}

variable "password" {
    default = "VMware1!rdejong"
}

# Enter Edge Nodes Display Name. Required for external interfaces.
variable "edge_node_1" {
   default = "edge-01"
}
variable "edge_node_2" {
   default = "edge-02"
}

# Segment Names
variable "nsx_segment_web" {
    default = "VM-Segment-Web"
}
variable "nsx_segment_app" {
    default = "VM-Segment-App"
}

variable "nsx_segment_db" {
    default = "VM-Segment-DB"
}

# Security Group names. 
variable "nsx_group_web" {
    default = "Web Servers"
}

variable "nsx_group_app" {
    default = "App Servers"
}

variable "nsx_group_db" {
    default = "DB Servers"
}

variable "nsx_group_blue" {
    default = "Blue Application"
}

variable "nsx_group_red" {
    default = "Red Application"
}

# Variables

# NSX Manager

variable "nsx_manager" {

default = "10.29.12.206"

}

# Username & Password for NSX-T Manager

variable "username" {

default = "admin"

}

variable "password" {

default = "VMware1!rdejong"

}

# Enter Edge Nodes Display Name. Required for external interfaces.

variable "edge_node_1" {

default = "edge-01"

}

variable "edge_node_2" {

default = "edge-02"

}

# Segment Names

variable "nsx_segment_web" {

default = "VM-Segment-Web"

}

variable "nsx_segment_app" {

default = "VM-Segment-App"

}

variable "nsx_segment_db" {

default = "VM-Segment-DB"

}

# Security Group names.

variable "nsx_group_web" {

default = "Web Servers"

}

variable "nsx_group_app" {

default = "App Servers"

}

variable "nsx_group_db" {

default = "DB Servers"

}

variable "nsx_group_blue" {

default = "Blue Application"

}

variable "nsx_group_red" {

default = "Red Application"

}

Below is the main.tf file:

# Terraform Provider
terraform {
  required_providers {
    nsxt = {
      source = "vmware/nsxt"
      version = "3.0.1"
    }
  }
}

# NSX-T Manager Credentials
provider "nsxt" {
    host                     = var.nsx_manager
    username                 = var.username
    password                 = var.password
    allow_unverified_ssl     = true
    max_retries              = 10
    retry_min_delay          = 500
    retry_max_delay          = 5000
    retry_on_status_codes    = [429]
}

# Data Sources we need for reference later
data "nsxt_policy_transport_zone" "overlay_tz" {
    display_name = "Overlay-TZ"
}

data "nsxt_policy_transport_zone" "vlan_tz" {
    display_name = "VLAN-TZ"
}

data "nsxt_policy_edge_cluster" "edge_cluster_vrf" {
    display_name = "edge-cluster-vrf"
}

# DFW Services
data "nsxt_policy_service" "ssh" {
    display_name = "SSH"
}

data "nsxt_policy_service" "http" {
    display_name = "HTTP"
}

data "nsxt_policy_service" "https" {
    display_name = "HTTPS"
}

# Edge Nodes
data "nsxt_policy_edge_node" "edge_node_1" {
   edge_cluster_path   = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path
   display_name        = var.edge_node_1
}

data "nsxt_policy_edge_node" "edge_node_2" {
   edge_cluster_path   = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path
   display_name        = var.edge_node_2
}

# Create VLAN Segments
resource "nsxt_policy_vlan_segment" "vlan101" {
    display_name = "VLAN101"
    description = "VLAN Segment created by Terraform"
    transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path
    vlan_ids = ["101"]
}

resource "nsxt_policy_vlan_segment" "vlan102" {
    display_name = "VLAN102"
    description = "VLAN Segment created by Terraform"
    transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path
    vlan_ids = ["102"]
}

# Create Red Tenant Access VLAN Segments for Tenant VRF
resource "nsxt_policy_vlan_segment" "vlan103" {
    display_name = "VLAN103"
    description = "VRF Red Tenant Access VLAN to ToR-A"
    transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path
    vlan_ids = ["103"]
}

resource "nsxt_policy_vlan_segment" "vlan104" {
    display_name = "VLAN104"
    description = "VRF Red Tenant Access VLAN to ToR-B"
    transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path
    vlan_ids = ["104"]
}

# Create Blue Tenant Access VLAN Segments for Tenant VRF
resource "nsxt_policy_vlan_segment" "vlan105" {
    display_name = "VLAN105"
    description = "VRF Blue Tenant Access VLAN to ToR-A"
    transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path
    vlan_ids = ["105"]
}

resource "nsxt_policy_vlan_segment" "vlan106" {
    display_name = "VLAN106"
    description = "VRF Blue Tenant Access VLAN to ToR-B"
    transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path
    vlan_ids = ["106"]
}

# Create Tenant Access VLAN Trunk Segments for Tenant VRF
resource "nsxt_policy_vlan_segment" "vrf_trunk_a" {
    display_name = "VRF-Trunk-A"
    description = "Tenant VRF Trunk"
    transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path
    vlan_ids = ["103-110"]
}

resource "nsxt_policy_vlan_segment" "vrf_trunk_b" {
    display_name = "VRF-Trunk-B"
    description = "Tenant VRF Trunk"
    transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path
    vlan_ids = ["103-110"]
}

# Create Default Tier-0 Gateway for Tenants Tier-0 VRFs to be runnning on. 
resource "nsxt_policy_tier0_gateway" "vrf_tier0_gw" {
    display_name              = "VRF-Tier-0"
    description               = "VRF Tier 0"
    failover_mode             = "NON_PREEMPTIVE"
    default_rule_logging      = false
    enable_firewall           = false
    force_whitelisting        = false
    ha_mode                   = "ACTIVE_ACTIVE"
    edge_cluster_path         = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

    bgp_config {
        ecmp            = true               
        local_as_num    = "65005"
        inter_sr_ibgp   = true
        multipath_relax = true
    }
}

# Create VRF for Red Tenant 
resource "nsxt_policy_tier0_gateway" "red_vrf" {
    display_name              = "VRF-Red-Tenant"
    description               = "VRF Red Tenant"
    failover_mode             = "NON_PREEMPTIVE"
    default_rule_logging      = false
    enable_firewall           = false
    force_whitelisting        = false
    ha_mode                   = "ACTIVE_ACTIVE"
    edge_cluster_path         = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

    vrf_config {
        gateway_path    = nsxt_policy_tier0_gateway.vrf_tier0_gw.path
    }

    bgp_config {
        ecmp            = true
        inter_sr_ibgp   = true
        multipath_relax = true               
    }

    tag {
        scope = "tenant"
        tag   = "red"
    }
}

# Create VRF for Blue Tenant 
resource "nsxt_policy_tier0_gateway" "blue_vrf" {
    depends_on                = [nsxt_policy_tier0_gateway.vrf_tier0_gw]
    display_name              = "VRF-Blue-Tenant"
    description               = "VRF Blue Tenant"
    failover_mode             = "NON_PREEMPTIVE"
    default_rule_logging      = false
    enable_firewall           = false
    force_whitelisting        = false
    ha_mode                   = "ACTIVE_ACTIVE"
    edge_cluster_path         = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

    vrf_config {
        gateway_path    = nsxt_policy_tier0_gateway.vrf_tier0_gw.path
    }

    bgp_config {
        ecmp            = true
        inter_sr_ibgp   = true
        multipath_relax = true       
    }

    tag {
        scope = "tenant"
        tag   = "blue"
    }
}

# Create VRF Tier-0 Gateway Uplink Interfaces
resource "nsxt_policy_tier0_gateway_interface" "vrf_uplink1" {
    display_name        = "Uplink-01"
    description         = "Default Uplink to VRF to Provider Transit"
    type                = "EXTERNAL"
    edge_node_path      = data.nsxt_policy_edge_node.edge_node_1.path
    gateway_path        = nsxt_policy_tier0_gateway.vrf_tier0_gw.path
    segment_path        = nsxt_policy_vlan_segment.vlan101.path
    subnets             = ["192.168.101.254/24"]
    mtu                 = 1500
}

resource "nsxt_policy_tier0_gateway_interface" "vrf_uplink2" {
    display_name        = "Uplink-02"
    description         = "Default Uplink to VRF to Provider Transit"
    type                = "EXTERNAL"
    edge_node_path      = data.nsxt_policy_edge_node.edge_node_2.path
    gateway_path        = nsxt_policy_tier0_gateway.vrf_tier0_gw.path
    segment_path        = nsxt_policy_vlan_segment.vlan102.path
    subnets             = ["192.168.102.254/24"]
    mtu                 = 1500
}

# Create Red Tenant VRF Uplink Interfaces
resource "nsxt_policy_tier0_gateway_interface" "red_vrf_uplink1" {
    depends_on          = [nsxt_policy_tier0_gateway_interface.vrf_uplink1]
    display_name        = "Uplink-01"
    description         = "Uplink to VRF to Provider Transit"
    type                = "EXTERNAL"
    edge_node_path      = data.nsxt_policy_edge_node.edge_node_1.path
    gateway_path        = nsxt_policy_tier0_gateway.red_vrf.path
    segment_path        = nsxt_policy_vlan_segment.vrf_trunk_a.path
    access_vlan_id      = 103
    subnets             = ["192.168.103.254/24"]
    mtu                 = 1500
}

resource "nsxt_policy_tier0_gateway_interface" "red_vrf_uplink2" {
    depends_on          = [nsxt_policy_tier0_gateway_interface.vrf_uplink2]
    display_name        = "Uplink-02"
    description         = "Uplink to VRF to Provider Transit"
    type                = "EXTERNAL"
    edge_node_path      = data.nsxt_policy_edge_node.edge_node_2.path
    gateway_path        = nsxt_policy_tier0_gateway.red_vrf.path
    segment_path        = nsxt_policy_vlan_segment.vrf_trunk_b.path
    access_vlan_id      = 104
    subnets             = ["192.168.104.254/24"]
    mtu                 = 1500
}

# Create Blue Tenant VRF Uplink Interfaces
resource "nsxt_policy_tier0_gateway_interface" "blue_vrf_uplink1" {
    depends_on          = [nsxt_policy_tier0_gateway_interface.vrf_uplink1]
    display_name        = "Uplink-01"
    description         = "VRF Uplink to ToR"
    type                = "EXTERNAL"
    edge_node_path      = data.nsxt_policy_edge_node.edge_node_1.path
    gateway_path        = nsxt_policy_tier0_gateway.blue_vrf.path
    segment_path        = nsxt_policy_vlan_segment.vrf_trunk_a.path
    access_vlan_id      = 105
    subnets             = ["192.168.105.254/24"]
    mtu                 = 1500
}

resource "nsxt_policy_tier0_gateway_interface" "blue_vrf_uplink2" {
    depends_on          = [nsxt_policy_tier0_gateway_interface.vrf_uplink2]
    display_name        = "Uplink-02"
    description         = "VRF Uplink to ToR"
    type                = "EXTERNAL"
    edge_node_path      = data.nsxt_policy_edge_node.edge_node_2.path
    gateway_path        = nsxt_policy_tier0_gateway.blue_vrf.path
    segment_path        = nsxt_policy_vlan_segment.vrf_trunk_b.path
    access_vlan_id      = 106
    subnets             = ["192.168.106.254/24"]
    mtu                 = 1500
}

# Provider Tier-0 to ToR BGP Neighbor Configuration
resource "nsxt_policy_bgp_neighbor" "router_a" {
    display_name        = "ToR-A"
    description         = "Terraform provisioned BGP Neighbor Configuration"
    bgp_path            = nsxt_policy_tier0_gateway.vrf_tier0_gw.bgp_config.0.path
    neighbor_address    = "192.168.101.1"
    remote_as_num       = "65001"
}

resource "nsxt_policy_bgp_neighbor" "router_b" {
    display_name        = "ToR-B"
    description         = "Terraform provisioned BGP Neighbor Configuration"
    bgp_path            = nsxt_policy_tier0_gateway.vrf_tier0_gw.bgp_config.0.path
    neighbor_address    = "192.168.102.1"
    remote_as_num       = "65002"
}

# VRF Red to ToR BGP Neighbor Configuration
resource "nsxt_policy_bgp_neighbor" "vrf_red_router_a" {
    depends_on          = [nsxt_policy_bgp_neighbor.router_a]
    display_name        = "ToR-A"
    description         = "VRF Red to ToR-A"
    bgp_path            = nsxt_policy_tier0_gateway.red_vrf.bgp_config.0.path
    neighbor_address    = "192.168.103.1"
    remote_as_num       = "65001"
}

resource "nsxt_policy_bgp_neighbor" "vrf_red_router_b" {
    depends_on          = [nsxt_policy_bgp_neighbor.router_b]
    display_name        = "ToR-B"
    description         = "VRF Red to ToR-B"
    bgp_path            = nsxt_policy_tier0_gateway.red_vrf.bgp_config.0.path
    neighbor_address    = "192.168.104.1"
    remote_as_num       = "65002"
}

# VRF Blue to ToR BGP Neighbor Configuration
resource "nsxt_policy_bgp_neighbor" "vrf_blue_router_a" {
    depends_on          = [nsxt_policy_bgp_neighbor.router_a]
    display_name        = "ToR-A"
    description         = "VRF Blue to ToR-A"
    bgp_path            = nsxt_policy_tier0_gateway.blue_vrf.bgp_config.0.path
    neighbor_address    = "192.168.105.1"
    remote_as_num       = "65001"
}

resource "nsxt_policy_bgp_neighbor" "vrf_blue_router_b" {
    depends_on          = [nsxt_policy_bgp_neighbor.router_b]
    display_name        = "ToR-B"
    description         = "VRF Blue to ToR-B"
    bgp_path            = nsxt_policy_tier0_gateway.blue_vrf.bgp_config.0.path
    neighbor_address    = "192.168.106.1"
    remote_as_num       = "65002"
}

# Create Red Tier-1 Gateway
resource "nsxt_policy_tier1_gateway" "tier1_gw_red" {
    description               = "Red Tenant Tier-1"
    display_name              = "Red-Tier-1"
    edge_cluster_path         = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path
    failover_mode             = "NON_PREEMPTIVE"
    default_rule_logging      = "false"
    enable_firewall           = "true"
    enable_standby_relocation = "false"
    force_whitelisting        = "true"
    tier0_path                = nsxt_policy_tier0_gateway.red_vrf.path
    route_advertisement_types = ["TIER1_STATIC_ROUTES", "TIER1_CONNECTED"]

    tag {
        scope = "tenant"
        tag   = "red"
    }

    route_advertisement_rule {
        name                      = "Tier 1 Networks"
        action                    = "PERMIT"
        subnets                   = ["172.16.10.0/24","172.16.11.0/24"]
        prefix_operator           = "GE"
        route_advertisement_types = ["TIER1_CONNECTED"]
    }
}

# Create Blue Tier-1 Gateway
resource "nsxt_policy_tier1_gateway" "tier1_gw_blue" {
    description               = "Blue Tenant Tier-1"
    display_name              = "Blue-Tier-1"
    edge_cluster_path         = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path
    failover_mode             = "NON_PREEMPTIVE"
    default_rule_logging      = "false"
    enable_firewall           = "false"
    enable_standby_relocation = "false"
    force_whitelisting        = "true"
    tier0_path                = nsxt_policy_tier0_gateway.blue_vrf.path
    route_advertisement_types = ["TIER1_STATIC_ROUTES", "TIER1_CONNECTED"]

    tag {
        scope = "tenant"
        tag   = "blue"
    }

    route_advertisement_rule {
        name                      = "Tier 1 Networks"
        action                    = "PERMIT"
        subnets                   = ["172.16.20.0/24"]
        prefix_operator           = "GE"
        route_advertisement_types = ["TIER1_CONNECTED"]
    }
}

# Create Tenant Segments
resource "nsxt_policy_segment" "red_segment_1" {
    display_name = "Red-Segment-1"
    description = "Red Tenant Segment 1"
    connectivity_path   = nsxt_policy_tier1_gateway.tier1_gw_red.path
    transport_zone_path = data.nsxt_policy_transport_zone.overlay_tz.path
    
    subnet {
      cidr        = "172.16.10.1/24"
    }
}

resource "nsxt_policy_segment" "red_segment_2" {
    display_name = "Red-Segment-2"
    description = "Red Tenant Segment 2"
    connectivity_path   = nsxt_policy_tier1_gateway.tier1_gw_red.path
    transport_zone_path = data.nsxt_policy_transport_zone.overlay_tz.path

    subnet {
      cidr        = "172.16.11.1/24"
    }
}

resource "nsxt_policy_segment" "blue_segment_1" {
    display_name = "Blue-Segment-1"
    description = "Blue Tenant Segment 1"
    connectivity_path   = nsxt_policy_tier1_gateway.tier1_gw_blue.path
    transport_zone_path = data.nsxt_policy_transport_zone.overlay_tz.path
    
    subnet {
      cidr        = "172.16.20.1/24"
    }
}

# Create Security Groups
resource "nsxt_policy_group" "web_servers" {
    display_name = var.nsx_group_web
    description  = "Terraform provisioned Group"

    criteria {
        condition {
            key         = "Tag"
            member_type = "VirtualMachine"
            operator    = "CONTAINS"
            value       = "Web"
        } 
    }
}

resource "nsxt_policy_group" "app_servers" {
    display_name = var.nsx_group_app
    description  = "Terraform provisioned Group"

    criteria {
        condition {
            key         = "Tag"
            member_type = "VirtualMachine"
            operator    = "CONTAINS"
            value       = "App"
        } 
    }
}

resource "nsxt_policy_group" "db_servers" {
    display_name = var.nsx_group_db
    description  = "Terraform provisioned Group"

    criteria {
        condition {
            key         = "Tag"
            member_type = "VirtualMachine"
            operator    = "CONTAINS"
            value       = "DB"
        } 
    }
}

resource "nsxt_policy_group" "red_servers" {
    display_name = var.nsx_group_red
    description  = "Terraform provisioned Group"

    criteria {
        condition {
            key         = "Tag"
            member_type = "VirtualMachine"
            operator    = "CONTAINS"
            value       = "Red"
        } 
    }
}

resource "nsxt_policy_group" "blue_servers" {
    display_name = var.nsx_group_blue
    description  = "Terraform provisioned Group"

    criteria {
        condition {
            key         = "Tag"
            member_type = "VirtualMachine"
            operator    = "CONTAINS"
            value       = "Blue"
        } 
    }
}

# Create Custom Services
resource "nsxt_policy_service" "service_tcp8443" {
    description  = "HTTPS service provisioned by Terraform"
    display_name = "TCP 8443"

    l4_port_set_entry {
        display_name      = "TCP8443"
        description       = "TCP port 8443 entry"
        protocol          = "TCP"
        destination_ports = [ "8443" ]
    }

    tag {
        scope = "color"
        tag   = "blue"
    }
}

# Create Security Policies
resource "nsxt_policy_security_policy" "allow_blue" {
    display_name = "Allow Blue Application"
    description  = "Terraform provisioned Security Policy"
    category     = "Application"
    locked       = false
    stateful     = true
    tcp_strict   = false
    scope        = [nsxt_policy_group.web_servers.path]

    rule {
        display_name        = "Allow SSH to Blue Servers"
        destination_groups  = [nsxt_policy_group.blue_servers.path]
        action              = "ALLOW"
        services            = [data.nsxt_policy_service.ssh.path]
        logged              = true
        scope               = [nsxt_policy_group.blue_servers.path]
    }    

    rule {
        display_name        = "Allow HTTPS to Web Servers"
        destination_groups  = [nsxt_policy_group.web_servers.path]
        action              = "ALLOW"
        services            = [data.nsxt_policy_service.https.path]
        logged              = true
        scope               = [nsxt_policy_group.web_servers.path]
    }

    rule {
        display_name        = "Allow TCP 8443 to App Servers"
        source_groups       = [nsxt_policy_group.web_servers.path]
        destination_groups  = [nsxt_policy_group.app_servers.path]
        action              = "ALLOW"
        services            = [nsxt_policy_service.service_tcp8443.path]
        logged              = true
        scope               = [nsxt_policy_group.web_servers.path,nsxt_policy_group.app_servers.path]
    }

    rule {
        display_name        = "Allow HTTP to DB Servers"
        source_groups       = [nsxt_policy_group.app_servers.path]
        destination_groups  = [nsxt_policy_group.db_servers.path]
        action              = "ALLOW"
        services            = [data.nsxt_policy_service.http.path]
        logged              = true
        scope               = [nsxt_policy_group.app_servers.path,nsxt_policy_group.db_servers.path]
    }

    rule {
        display_name        = "Any Deny"
        action              = "REJECT"
        logged              = false
        scope               = [nsxt_policy_group.blue_servers.path]
    }
}

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# Terraform Provider

terraform {

required_providers {

nsxt = {

source = "vmware/nsxt"

version = "3.0.1"

}

# NSX-T Manager Credentials

provider "nsxt" {

host = var.nsx_manager

username = var.username

password = var.password

allow_unverified_ssl = true

max_retries = 10

retry_min_delay = 500

retry_max_delay = 5000

retry_on_status_codes = [429]

}

# Data Sources we need for reference later

data "nsxt_policy_transport_zone" "overlay_tz" {

display_name = "Overlay-TZ"

}

data "nsxt_policy_transport_zone" "vlan_tz" {

display_name = "VLAN-TZ"

}

data "nsxt_policy_edge_cluster" "edge_cluster_vrf" {

display_name = "edge-cluster-vrf"

}

# DFW Services

data "nsxt_policy_service" "ssh" {

display_name = "SSH"

}

data "nsxt_policy_service" "http" {

display_name = "HTTP"

}

data "nsxt_policy_service" "https" {

display_name = "HTTPS"

}

# Edge Nodes

data "nsxt_policy_edge_node" "edge_node_1" {

edge_cluster_path = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

display_name = var.edge_node_1

}

data "nsxt_policy_edge_node" "edge_node_2" {

edge_cluster_path = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

display_name = var.edge_node_2

}

# Create VLAN Segments

resource "nsxt_policy_vlan_segment" "vlan101" {

display_name = "VLAN101"

description = "VLAN Segment created by Terraform"

transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path

vlan_ids = ["101"]

}

resource "nsxt_policy_vlan_segment" "vlan102" {

display_name = "VLAN102"

description = "VLAN Segment created by Terraform"

transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path

vlan_ids = ["102"]

}

# Create Red Tenant Access VLAN Segments for Tenant VRF

resource "nsxt_policy_vlan_segment" "vlan103" {

display_name = "VLAN103"

description = "VRF Red Tenant Access VLAN to ToR-A"

transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path

vlan_ids = ["103"]

}

resource "nsxt_policy_vlan_segment" "vlan104" {

display_name = "VLAN104"

description = "VRF Red Tenant Access VLAN to ToR-B"

transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path

vlan_ids = ["104"]

}

# Create Blue Tenant Access VLAN Segments for Tenant VRF

resource "nsxt_policy_vlan_segment" "vlan105" {

display_name = "VLAN105"

description = "VRF Blue Tenant Access VLAN to ToR-A"

transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path

vlan_ids = ["105"]

}

resource "nsxt_policy_vlan_segment" "vlan106" {

display_name = "VLAN106"

description = "VRF Blue Tenant Access VLAN to ToR-B"

transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path

vlan_ids = ["106"]

}

# Create Tenant Access VLAN Trunk Segments for Tenant VRF

resource "nsxt_policy_vlan_segment" "vrf_trunk_a" {

display_name = "VRF-Trunk-A"

description = "Tenant VRF Trunk"

transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path

vlan_ids = ["103-110"]

}

resource "nsxt_policy_vlan_segment" "vrf_trunk_b" {

display_name = "VRF-Trunk-B"

description = "Tenant VRF Trunk"

transport_zone_path = data.nsxt_policy_transport_zone.vlan_tz.path

vlan_ids = ["103-110"]

}

# Create Default Tier-0 Gateway for Tenants Tier-0 VRFs to be runnning on.

resource "nsxt_policy_tier0_gateway" "vrf_tier0_gw" {

display_name = "VRF-Tier-0"

description = "VRF Tier 0"

failover_mode = "NON_PREEMPTIVE"

default_rule_logging = false

enable_firewall = false

force_whitelisting = false

ha_mode = "ACTIVE_ACTIVE"

edge_cluster_path = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

bgp_config {

ecmp = true

local_as_num = "65005"

inter_sr_ibgp = true

multipath_relax = true

}

# Create VRF for Red Tenant

resource "nsxt_policy_tier0_gateway" "red_vrf" {

display_name = "VRF-Red-Tenant"

description = "VRF Red Tenant"

failover_mode = "NON_PREEMPTIVE"

default_rule_logging = false

enable_firewall = false

force_whitelisting = false

ha_mode = "ACTIVE_ACTIVE"

edge_cluster_path = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

vrf_config {

gateway_path = nsxt_policy_tier0_gateway.vrf_tier0_gw.path

}

bgp_config {

ecmp = true

inter_sr_ibgp = true

multipath_relax = true

}

tag {

scope = "tenant"

tag = "red"

}

# Create VRF for Blue Tenant

resource "nsxt_policy_tier0_gateway" "blue_vrf" {

depends_on = [nsxt_policy_tier0_gateway.vrf_tier0_gw]

display_name = "VRF-Blue-Tenant"

description = "VRF Blue Tenant"

failover_mode = "NON_PREEMPTIVE"

default_rule_logging = false

enable_firewall = false

force_whitelisting = false

ha_mode = "ACTIVE_ACTIVE"

edge_cluster_path = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

vrf_config {

gateway_path = nsxt_policy_tier0_gateway.vrf_tier0_gw.path

}

bgp_config {

ecmp = true

inter_sr_ibgp = true

multipath_relax = true

}

tag {

scope = "tenant"

tag = "blue"

}

# Create VRF Tier-0 Gateway Uplink Interfaces

resource "nsxt_policy_tier0_gateway_interface" "vrf_uplink1" {

display_name = "Uplink-01"

description = "Default Uplink to VRF to Provider Transit"

type = "EXTERNAL"

edge_node_path = data.nsxt_policy_edge_node.edge_node_1.path

gateway_path = nsxt_policy_tier0_gateway.vrf_tier0_gw.path

segment_path = nsxt_policy_vlan_segment.vlan101.path

subnets = ["192.168.101.254/24"]

mtu = 1500

}

resource "nsxt_policy_tier0_gateway_interface" "vrf_uplink2" {

display_name = "Uplink-02"

description = "Default Uplink to VRF to Provider Transit"

type = "EXTERNAL"

edge_node_path = data.nsxt_policy_edge_node.edge_node_2.path

gateway_path = nsxt_policy_tier0_gateway.vrf_tier0_gw.path

segment_path = nsxt_policy_vlan_segment.vlan102.path

subnets = ["192.168.102.254/24"]

mtu = 1500

}

# Create Red Tenant VRF Uplink Interfaces

resource "nsxt_policy_tier0_gateway_interface" "red_vrf_uplink1" {

depends_on = [nsxt_policy_tier0_gateway_interface.vrf_uplink1]

display_name = "Uplink-01"

description = "Uplink to VRF to Provider Transit"

type = "EXTERNAL"

edge_node_path = data.nsxt_policy_edge_node.edge_node_1.path

gateway_path = nsxt_policy_tier0_gateway.red_vrf.path

segment_path = nsxt_policy_vlan_segment.vrf_trunk_a.path

access_vlan_id = 103

subnets = ["192.168.103.254/24"]

mtu = 1500

}

resource "nsxt_policy_tier0_gateway_interface" "red_vrf_uplink2" {

depends_on = [nsxt_policy_tier0_gateway_interface.vrf_uplink2]

display_name = "Uplink-02"

description = "Uplink to VRF to Provider Transit"

type = "EXTERNAL"

edge_node_path = data.nsxt_policy_edge_node.edge_node_2.path

gateway_path = nsxt_policy_tier0_gateway.red_vrf.path

segment_path = nsxt_policy_vlan_segment.vrf_trunk_b.path

access_vlan_id = 104

subnets = ["192.168.104.254/24"]

mtu = 1500

}

# Create Blue Tenant VRF Uplink Interfaces

resource "nsxt_policy_tier0_gateway_interface" "blue_vrf_uplink1" {

depends_on = [nsxt_policy_tier0_gateway_interface.vrf_uplink1]

display_name = "Uplink-01"

description = "VRF Uplink to ToR"

type = "EXTERNAL"

edge_node_path = data.nsxt_policy_edge_node.edge_node_1.path

gateway_path = nsxt_policy_tier0_gateway.blue_vrf.path

segment_path = nsxt_policy_vlan_segment.vrf_trunk_a.path

access_vlan_id = 105

subnets = ["192.168.105.254/24"]

mtu = 1500

}

resource "nsxt_policy_tier0_gateway_interface" "blue_vrf_uplink2" {

depends_on = [nsxt_policy_tier0_gateway_interface.vrf_uplink2]

display_name = "Uplink-02"

description = "VRF Uplink to ToR"

type = "EXTERNAL"

edge_node_path = data.nsxt_policy_edge_node.edge_node_2.path

gateway_path = nsxt_policy_tier0_gateway.blue_vrf.path

segment_path = nsxt_policy_vlan_segment.vrf_trunk_b.path

access_vlan_id = 106

subnets = ["192.168.106.254/24"]

mtu = 1500

}

# Provider Tier-0 to ToR BGP Neighbor Configuration

resource "nsxt_policy_bgp_neighbor" "router_a" {

display_name = "ToR-A"

description = "Terraform provisioned BGP Neighbor Configuration"

bgp_path = nsxt_policy_tier0_gateway.vrf_tier0_gw.bgp_config.0.path

neighbor_address = "192.168.101.1"

remote_as_num = "65001"

}

resource "nsxt_policy_bgp_neighbor" "router_b" {

display_name = "ToR-B"

description = "Terraform provisioned BGP Neighbor Configuration"

bgp_path = nsxt_policy_tier0_gateway.vrf_tier0_gw.bgp_config.0.path

neighbor_address = "192.168.102.1"

remote_as_num = "65002"

}

# VRF Red to ToR BGP Neighbor Configuration

resource "nsxt_policy_bgp_neighbor" "vrf_red_router_a" {

depends_on = [nsxt_policy_bgp_neighbor.router_a]

display_name = "ToR-A"

description = "VRF Red to ToR-A"

bgp_path = nsxt_policy_tier0_gateway.red_vrf.bgp_config.0.path

neighbor_address = "192.168.103.1"

remote_as_num = "65001"

}

resource "nsxt_policy_bgp_neighbor" "vrf_red_router_b" {

depends_on = [nsxt_policy_bgp_neighbor.router_b]

display_name = "ToR-B"

description = "VRF Red to ToR-B"

bgp_path = nsxt_policy_tier0_gateway.red_vrf.bgp_config.0.path

neighbor_address = "192.168.104.1"

remote_as_num = "65002"

}

# VRF Blue to ToR BGP Neighbor Configuration

resource "nsxt_policy_bgp_neighbor" "vrf_blue_router_a" {

depends_on = [nsxt_policy_bgp_neighbor.router_a]

display_name = "ToR-A"

description = "VRF Blue to ToR-A"

bgp_path = nsxt_policy_tier0_gateway.blue_vrf.bgp_config.0.path

neighbor_address = "192.168.105.1"

remote_as_num = "65001"

}

resource "nsxt_policy_bgp_neighbor" "vrf_blue_router_b" {

depends_on = [nsxt_policy_bgp_neighbor.router_b]

display_name = "ToR-B"

description = "VRF Blue to ToR-B"

bgp_path = nsxt_policy_tier0_gateway.blue_vrf.bgp_config.0.path

neighbor_address = "192.168.106.1"

remote_as_num = "65002"

}

# Create Red Tier-1 Gateway

resource "nsxt_policy_tier1_gateway" "tier1_gw_red" {

description = "Red Tenant Tier-1"

display_name = "Red-Tier-1"

edge_cluster_path = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

failover_mode = "NON_PREEMPTIVE"

default_rule_logging = "false"

enable_firewall = "true"

enable_standby_relocation = "false"

force_whitelisting = "true"

tier0_path = nsxt_policy_tier0_gateway.red_vrf.path

route_advertisement_types = ["TIER1_STATIC_ROUTES", "TIER1_CONNECTED"]

tag {

scope = "tenant"

tag = "red"

}

route_advertisement_rule {

name = "Tier 1 Networks"

action = "PERMIT"

subnets = ["172.16.10.0/24","172.16.11.0/24"]

prefix_operator = "GE"

route_advertisement_types = ["TIER1_CONNECTED"]

}

# Create Blue Tier-1 Gateway

resource "nsxt_policy_tier1_gateway" "tier1_gw_blue" {

description = "Blue Tenant Tier-1"

display_name = "Blue-Tier-1"

edge_cluster_path = data.nsxt_policy_edge_cluster.edge_cluster_vrf.path

failover_mode = "NON_PREEMPTIVE"

default_rule_logging = "false"

enable_firewall = "false"

enable_standby_relocation = "false"

force_whitelisting = "true"

tier0_path = nsxt_policy_tier0_gateway.blue_vrf.path

route_advertisement_types = ["TIER1_STATIC_ROUTES", "TIER1_CONNECTED"]

tag {

scope = "tenant"

tag = "blue"

}

route_advertisement_rule {

name = "Tier 1 Networks"

action = "PERMIT"

subnets = ["172.16.20.0/24"]

prefix_operator = "GE"

route_advertisement_types = ["TIER1_CONNECTED"]

}

# Create Tenant Segments

resource "nsxt_policy_segment" "red_segment_1" {

display_name = "Red-Segment-1"

description = "Red Tenant Segment 1"

connectivity_path = nsxt_policy_tier1_gateway.tier1_gw_red.path

transport_zone_path = data.nsxt_policy_transport_zone.overlay_tz.path

subnet {

cidr = "172.16.10.1/24"

}

resource "nsxt_policy_segment" "red_segment_2" {

display_name = "Red-Segment-2"

description = "Red Tenant Segment 2"

connectivity_path = nsxt_policy_tier1_gateway.tier1_gw_red.path

transport_zone_path = data.nsxt_policy_transport_zone.overlay_tz.path

subnet {

cidr = "172.16.11.1/24"

}

resource "nsxt_policy_segment" "blue_segment_1" {

display_name = "Blue-Segment-1"

description = "Blue Tenant Segment 1"

connectivity_path = nsxt_policy_tier1_gateway.tier1_gw_blue.path

transport_zone_path = data.nsxt_policy_transport_zone.overlay_tz.path

subnet {

cidr = "172.16.20.1/24"

}

# Create Security Groups

resource "nsxt_policy_group" "web_servers" {

display_name = var.nsx_group_web

description = "Terraform provisioned Group"

criteria {

condition {

key = "Tag"

member_type = "VirtualMachine"

operator = "CONTAINS"

value = "Web"

}

resource "nsxt_policy_group" "app_servers" {

display_name = var.nsx_group_app

description = "Terraform provisioned Group"

criteria {

condition {

key = "Tag"

member_type = "VirtualMachine"

operator = "CONTAINS"

value = "App"

}

resource "nsxt_policy_group" "db_servers" {

display_name = var.nsx_group_db

description = "Terraform provisioned Group"

criteria {

condition {

key = "Tag"

member_type = "VirtualMachine"

operator = "CONTAINS"

value = "DB"

}

resource "nsxt_policy_group" "red_servers" {

display_name = var.nsx_group_red

description = "Terraform provisioned Group"

criteria {

condition {

key = "Tag"

member_type = "VirtualMachine"

operator = "CONTAINS"

value = "Red"

}

resource "nsxt_policy_group" "blue_servers" {

display_name = var.nsx_group_blue

description = "Terraform provisioned Group"

criteria {

condition {

key = "Tag"

member_type = "VirtualMachine"

operator = "CONTAINS"

value = "Blue"

}

# Create Custom Services

resource "nsxt_policy_service" "service_tcp8443" {

description = "HTTPS service provisioned by Terraform"

display_name = "TCP 8443"

l4_port_set_entry {

display_name = "TCP8443"

description = "TCP port 8443 entry"

protocol = "TCP"

destination_ports = [ "8443" ]

}

tag {

scope = "color"

tag = "blue"

}

# Create Security Policies

resource "nsxt_policy_security_policy" "allow_blue" {

display_name = "Allow Blue Application"

description = "Terraform provisioned Security Policy"

category = "Application"

locked = false

stateful = true

tcp_strict = false

scope = [nsxt_policy_group.web_servers.path]

rule {

display_name = "Allow SSH to Blue Servers"

destination_groups = [nsxt_policy_group.blue_servers.path]

action = "ALLOW"

services = [data.nsxt_policy_service.ssh.path]

logged = true

scope = [nsxt_policy_group.blue_servers.path]

}

rule {

display_name = "Allow HTTPS to Web Servers"

destination_groups = [nsxt_policy_group.web_servers.path]

action = "ALLOW"

services = [data.nsxt_policy_service.https.path]

logged = true

scope = [nsxt_policy_group.web_servers.path]

}

rule {

display_name = "Allow TCP 8443 to App Servers"

source_groups = [nsxt_policy_group.web_servers.path]

destination_groups = [nsxt_policy_group.app_servers.path]

action = "ALLOW"

services = [nsxt_policy_service.service_tcp8443.path]

logged = true

scope = [nsxt_policy_group.web_servers.path,nsxt_policy_group.app_servers.path]

}

rule {

display_name = "Allow HTTP to DB Servers"

source_groups = [nsxt_policy_group.app_servers.path]

destination_groups = [nsxt_policy_group.db_servers.path]

action = "ALLOW"

services = [data.nsxt_policy_service.http.path]

logged = true

scope = [nsxt_policy_group.app_servers.path,nsxt_policy_group.db_servers.path]

}

rule {

display_name = "Any Deny"

action = "REJECT"

logged = false

scope = [nsxt_policy_group.blue_servers.path]

}

Configuring A/A Tier-0 Gateway with two VRFs and Tier-1 Gateways with NSX-T Terraform Provider

Configuring A/A Tier-0 Gateway with two VRFs and Tier-1 Gateways with NSX-T Terraform Provider

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Configuring A/A Tier-0 Gateway with two VRFs and Tier-1 Gateways with NSX-T Terraform Provider

Configuring A/A Tier-0 Gateway with two VRFs and Tier-1 Gateways with NSX-T Terraform Provider

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