Terraform DigitalOcean Firewall

Provides a DigitalOcean Cloud Firewall resource. This can be used to create, modify, and delete Firewalls.

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We eat, drink, sleep and most importantly love DevOps. We are working towards strategies for standardizing architecture while ensuring security for the infrastructure. We are strong believer of the philosophy Bigger problems are always solved by breaking them into smaller manageable problems. Resonating with microservices architecture, it is considered best-practice to run database, cluster, storage in smaller connected yet manageable pieces within the infrastructure.

This module is basically combination of Terraform open source and includes automatation tests and examples. It also helps to create and improve your infrastructure with minimalistic code instead of maintaining the whole infrastructure code yourself.

We have fifty plus terraform modules. A few of them are comepleted and are available for open source usage while a few others are in progress.

Prerequisites

This module has a few dependencies:

Examples

IMPORTANT: Since the master branch used in source varies based on new modifications, we suggest that you use the release versions here.

Simple Example

Here is an example of how you can use this module in your inventory structure:

     module "firewall" {
     source             = "terraform-do-modules/firewall/digitalocean"
     version            = "1.0.0"
     name               = "app"
     environment        = "test"
     allowed_ip         = ["0.0.0.0/0"]
     allowed_ports      = [22, 80]
     droplet_ids        = []
     kubernetes_ids     = []
     load_balancer_uids = []
     }

databases firewall Example

Here is an example of how you can use this module in your inventory structure:

     module "firewall" {
     source                     = "terraform-do-modules/firewall/digitalocean"
     version                    = "1.0.0"
     name                       = local.name
     environment                = local.environment
     database_firewall_enabled  = true
     database_cluster_id        = ""
     rules = [
        {
          type  = "ip_addr"
          value = "192.168.1.1"
        },
      ]
     }

Inputs

Name	Description	Type	Default	Required
allowed_ip	List of allowed ip.	list(any)	[]	no
allowed_ports	List of allowed ingress ports.	list(any)	[]	no
database_cluster_id	The ID of the target database cluster.	string	null	no
droplet_ids	The ID of the VPC that the instance security group belongs to.	list(any)	[]	no
enabled	Flag to control the firewall creation.	bool	true	no
environment	Environment (e.g. prod, dev, staging).	string	""	no
kubernetes_ids	The ID of the VPC that the kubernetes security group belongs to.	list(any)	[]	no
label_order	Label order, e.g. name,application.	list(any)	[ "name", "environment" ]	no
load_balancer_uids	The ID of the VPC that the load_balancer security group belongs to.	list(any)	[]	no
managedby	ManagedBy, eg 'terraform-do-modules' or 'hello@clouddrove.com'	string	"terraform-do-modules"	no
name	Name (e.g. app or cluster).	string	""	no
outbound_rule	List of objects that represent the configuration of each outbound rule.	list(object({ protocol = string port_range = string destination_addresses = list(string) }))	[ { "destination_addresses": [ "0.0.0.0/0", "::/0" ], "destination_droplet_ids": [], "port_range": "1-65535", "protocol": "tcp" }, { "destination_addresses": [ "0.0.0.0/0", "::/0" ], "port_range": "1-65535", "protocol": "udp" } ]	no
protocol	The protocol. If not icmp, tcp, udp, or all use the.	string	"tcp"	no
rules	List of objects that represent the configuration of each inbound rule.	any	[]	no
tags	An array containing the names of Tags corresponding to groups of Droplets from which the inbound traffic will be accepted.	list(any)	[]	no

Outputs

Name	Description
cluster_id	The ID of the target database cluster.
database_uuid	A unique identifier for the firewall rule.
droplet_ids	The list of the IDs of the Droplets assigned to the Firewall.
id	A unique ID that can be used to identify and reference a Firewall.
inbound_rule	The inbound access rule block for the Firewall.
name	The name of the Firewall.
outbound_rule	The name of the Firewall.

Testing

In this module testing is performed with terratest and it creates a small piece of infrastructure, matches the output like ARN, ID and Tags name etc and destroy infrastructure in your AWS account. This testing is written in GO, so you need a GO environment in your system.

You need to run the following command in the testing folder:

  go test -run Test

Feedback

If you come accross a bug or have any feedback, please log it in our issue tracker, or feel free to drop us an email at hello@clouddrove.com.

If you have found it worth your time, go ahead and give us a ★ on our GitHub!

About us

At CloudDrove, we offer expert guidance, implementation support and services to help organisations accelerate their journey to the cloud. Our services include docker and container orchestration, cloud migration and adoption, infrastructure automation, application modernisation and remediation, and performance engineering.

We are The Cloud Experts!

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We ❤️ Open Source and you can check out our other modules to get help with your new Cloud ideas.