tablets-scaling

ScyllaDB Tablets DEMO

This project walks you through the following scenario:

1. Starting off with 3 ScyllaDB nodes
2. Spike in the number of requests
3. Add 3 additional ScyllaDB nodes to handle requests
4. Request volume goes down
5. Remove 3 nodes

Requirements

• AWS account
• Terraform
• Ansible
• Python

Usage

1. Clone the repository

   git clone https://github.com/scylladb/1m-ops-demo.git
   cd 1m-ops-demo/tablets/scaling
   

2. Set your variables in variables.tf

3. Set up EC2 instances on AWS (takes 4+ minutes)

   terraform init
   terraform plan
   terraform apply

4. Start Python server

   Install requirements in a new environment, and start the server:

   virtualenv env
   source env/bin/activate
   pip install -r requirements.txt
   python app.py
   

   Output:

   * Serving Flask app 'app'
   * Debug mode: off
   WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
   * Running on all addresses (0.0.0.0)
   * Running on http://127.0.0.1:5000
   * Running on http://192.168.0.47:5000
   

5. Open the DEMO UI

   http://127.0.0.1:5000