onlykumarabhishek/terraformgcp

Terraform-GCP

This module creates a reslient and fault tolerant GCP Infrastructure using Terraform.

Usage

Step 1: Clone the repo

Step 2: Then perform the following commands on the root folder:

• terraform init to get the plugins
• terraform plan --var-file="env/uat.tfvars" to see the infrastructure plan
• terraform apply --var-file="env/uat.tfvars" to apply the infrastructure build
• terraform destroy --var-file="env/uat.tfvars" to destroy the built infrastructure

Providers

Name	Version
provider_google	3.79.0

Modules

Name	Source	Purpose
Bastion	./modules/bastion	For Creating Bastion host
Cloudsql	./modules/cloudsql	For Creating CloudSQL for PostgreSQL database
VPC	./modules/vpc	For Creating Virtual Private Network
Compute	./modules/compute	For Creating Compute Instance for Other services
GKE	./modules/gke	For Creating Private Kubernetes Cluster for deployment of application

Resources

Name	Type
google_project_service.gcp_services	resource
local_file.pem_key_file_bastion	resource
local_file.pem_key_file_efk	resource
local_file.pem_key_file_hazel	resource
local_file.pem_key_file_infinispan	resource
local_file.pem_key_file_k8s	resource
local_file.pem_key_file_mongo	resource
local_file.pem_key_file_monitoring	resource
local_file.pem_key_file_rabbit	resource
tls_private_key.ssh_key_bastion	resource
tls_private_key.ssh_key_efk	resource
tls_private_key.ssh_key_hazel	resource
tls_private_key.ssh_key_infinispan	resource
tls_private_key.ssh_key_k8s	resource
tls_private_key.ssh_key_mongo	resource
tls_private_key.ssh_key_monitoring	resource
tls_private_key.ssh_key_rabbit	resource

Inputs

Name	Description	Type	Default	Required
database_version	Version of your postgresql database	string	n/a	yes
db_instance_name	Database instance name	string	n/a	yes
efk_disk_size_gb	Logging server disk size	string	n/a	yes
efk_machine_type	Logging server Machine type	string	n/a	yes
efk_module_name	n/a	list(string)	[ "efk"]	no
gcp_auth_file	auth file location	string	n/a	yes
gcp_region_1	region where machine will create	string	n/a	yes
gcp_service_list	The list of apis necessary for this project	list(string)	["cloudresourcemanager.googleapis.com", "serviceusage.googleapis.com", "compute.googleapis.com", "sqladmin.googleapis.com", "networkmanagement.googleapis.com", "container.googleapis.com", "logging.googleapis.com", "monitoring.googleapis.com", "storage.googleapis.com", "cloudapis.googleapis.com", "servicenetworking.googleapis.com", "iam.googleapis.com"]	no
hazelcast_disk_size_gb	n/a	any	n/a	yes
hazelcast_image	n/a	any	n/a	yes
hazelcast_machine_type	n/a	any	n/a	yes
hazelcast_module_name	list(string)	[ "hazelcast"]	no
infinispan_disk_size_gb	n/a	any	n/a	yes
infinispan_image	n/a	any	n/a	yes
infinispan_machine_type	string	n/a	yes
infinispan_module_name	list(string)	[ "infinispan"]	no
mongo_config_disk_size_gb	string	n/a	yes
mongo_config_image	n/a	string	n/a	yes
mongo_config_machine_type	n/a	any	n/a	yes
mongo_config_module_name	n/a	list(string)	[ "mongo-config-1"]	no
mongo_shard_disk_size_gb	any	n/a	yes
mongo_shard_image	n/a	any	n/a	yes
mongo_shard_machine_type	n/a	any	n/a	yes
mongo_shard_module_name	n/a	list(string)	[ "mongo-shard1-node1"]	no
mongo_single_disk_size_gb	any	n/a	yes
mongo_single_image	n/a	any	n/a	yes
mongo_single_machine_type	n/a	any	n/a	yes
mongo_single_module_name	n/a	list(string)	[ "node1", "node2", "node3"]	no
mongodb_cluster	n/a	bool	n/a	yes
monitoring_disk_size_gb	n/a	any	n/a	yes
monitoring_image	n/a	any	n/a	yes
monitoring_machine_type	n/a	any	n/a	yes
monitoring_module_name	n/a	list(string)	[ "monitoring"]	no
no_of_efk_node	n/a	any	n/a	yes
no_of_hazelcast_node	n/a	any	n/a	yes
no_of_infinispan_node	n/a	any	n/a	yes
no_of_monitoring_node	n/a	any	n/a	yes
no_of_rabbitmq_node	n/a	any	n/a	yes
project_name	name of project	string	n/a	yes
project_tag	n/a	any	n/a	yes
rabbitmq_disk_size_gb	n/a	any	n/a	yes
rabbitmq_image	n/a	any	n/a	yes
rabbitmq_machine_type	n/a	any	n/a	yes
rabbitmq_module_name	n/a	list(string)	[ "rabbitmq"]	no
zones	n/a	list	[]	no

Outputs

Name	Description
vpc_id	VPC ID
bastion_IP	Public IP of bastion host

Requirements

Before this module can be used on a project, you must ensure that the following pre-requisites are fulfilled:

1. Terraform is installed on the machine where Terraform is executed.
2. The Service Account you execute the module with has the right permissions.
3. Make sure you had create a project in google cloud.
4. Create a bucket for Remote backend in Terraform and put the name of that bucket in provider.tf file.

Software Dependencies

Terraform

• Terraform 1.0.x
• terraform-provider-google plugin v3.79.0

Configure a Service Account

In order to execute this module you must have a Service Account with the following project roles:

• roles/owner

Install

Terraform

Be sure you have the correct Terraform version (1.0.x), you can choose the binary here:

• https://releases.hashicorp.com/terraform/

File structure

The project has the following folders and files:

• /: Root folder
• env: For storing .tfvars file
• /main.tf: Main file for this module, contains all the resources to create
• /variables.tf: All the variables for the module
• /output.tf: The outputs of the module
• /README.md: This file
• /modules: Modules that are called from main.tf
• /rabbitmq.tf: For Rabbitmq
• /hazel.tf: For Hazelcast
• /infinispan.tf: For Infinispan
• /mongo-shard.tf: For MongoDB
• /monitoring.tf: For Monitoring
• /efk.tf: For Logging
• /provider.tf: Information regarding provider which is GCP in our case