# Deploy Langflow on AWS

**Duration**: 30 minutes

## Introduction

In this tutorial, you will learn how to deploy langflow on AWS using [AWS Cloud Development Kit](https://aws.amazon.com/cdk/?nc2=type_a) (CDK).
This tutorial assumes you have an AWS account and basic knowledge of AWS.

The architecture of the application to be created:
![langflow-archi](./img/langflow-archi.png)

[Application Load Balancer](https://aws.amazon.com/elasticloadbalancing/application-load-balancer/?nc1=h_ls), [AWS Fargate](https://aws.amazon.com/fargate/?nc2=type_a) and [Amazon Aurora](https://aws.amazon.com/rds/aurora/?nc2=type_a) are created by AWS CDK.
The aurora's secrets are managed by [AWS Secrets Manager](https://aws.amazon.com/secrets-manager/?nc2=type_a).
The Fargate task is divided into a frontend and a backend, which communicate through service discovery.
If you just want to deploy resources, you do not need in-depth knowledge of each of the above services.

# How to set up your environment and deploy langflow

1. Open [AWS CloudShell](https://us-east-1.console.aws.amazon.com/cloudshell/home?region=us-east-1).
1. Run the following commands in Cloudshell:
   ```shell
   git clone https://github.com/aws-samples/cloud9-setup-for-prototyping
   cd cloud9-setup-for-prototyping
   ./bin/bootstrap
   ```
1. When you see `Done!` in Cloudshell, open `cloud9-for-prototyping` from [AWS Cloud9](https://us-east-1.console.aws.amazon.com/cloud9control/home?region=us-east-1#/).
   ![make-cloud9](./img/langflow-cloud9-en.png)
1. Run the following command in the Cloud9 terminal.
    ```shell
    git clone -b aws-cdk https://github.com/logspace-ai/langflow.git
    cd langflow/scripts/aws
    cp .env.example .env # Edit this file if you need environment settings
    npm ci
    cdk bootstrap
    cdk deploy
    ```
1. Access the URL displayed.
   ```shell
   Outputs:
   LangflowAppStack.NetworkURLXXXXXX = http://alb-XXXXXXXXXXX.elb.amazonaws.com
   ```
1. Enter your user name and password to sign in. If you have not set a user name and password in your `.env` file, the user name will be set to `admin` and the password to `123456`.
   ![signin-langflow](./img/langflow-signin.png)

# Cleanup

1. Run the following command in the Cloud9 terminal.
   ```shell
   bash delete-resources.sh
   ```
1. Open [AWS CloudFormation](https://us-east-1.console.aws.amazon.com/cloudformation/home?region=us-east-1#/getting-started), select `aws-cloud9-cloud9-for-prototyping-XXXX` and delete it.
   ![delete-cfn](./img/langflow-cfn.png)