hrms_setup_python.playbook(DynamoDB NoSQL).playbook.md

Playbook: Setting Up System

Overview

This playbook will guide you through the process of setting up an environment and generating Docker files for deployment.

What’s Needed From User

• AWS CLI credentials and configs for DynamoDB (region, access key, secret key).

Procedure

1. Set up Python:

   • Install the latest version of Python:

     sudo apt-get update
     sudo apt-get install python3
     pip install boto3

2. Set up Apache Maven:

   • Download and install Apache Maven:

     sudo apt-get update
     sudo apt-get install maven

   • Set the M2_HOME environment variable and add it to the system path:

     export M2_HOME=/opt/apache-maven
     export PATH=$PATH:$M2_HOME/bin

3. Set up Node.js:

   • Install Node.js and npm if not already installed:

     sudo apt-get update
     sudo apt-get install nodejs

4. Set up Kafka and Zookeeper:

   • Install Kafka and Zookeeper using the following commands:

      wget https://downloads.apache.org/kafka/<latest-version-no.>/kafka_<latest-version-no.>.tgz
      tar -xzf kafka_<latest-version-no.>.tgz
      pip install kafka-python

   • Update Kafka server configuration file (server.properties) to configure listeners:

      listeners=PLAINTEXT://:9092
      advertised.listeners=PLAINTEXT://localhost:9092

   • Start Kafka and Zookeeper :

      bin/zookeeper-server-start.sh config/zookeeper.properties
      bin/kafka-server-start.sh config/server.properties

5. Set up AWS DynamoDB:

   • Install the AWS CLI and dynamodb using the following commands:

     sudo apt-get install awscli

   • Configure the DynamoDB instance using the AWS CLI using the following command from the already present AWS credentials and configuration:

     aws configure set dynamodb=<dynamodb-endpoint> --region <region> --access-key <access-key> --secret-key <secret-key> --output json

   • Note down the connection details (endpoint, username, password) for later use.

6. Test the environment:

   • Verify that the database is accessible from the system where the system will be deployed.
   • Verify that the user can access the database and perform CRUD operations on a sample table.
   • Verify that all the installed components are running and healthy.
   • Connect to the AWS DynamoDB instance using the AWS CLI and verify the connection.

7. Dockerize the environment:

   • Create Dockerfile for each service (Python, Node.js, Kafka, Zookeeper, DynamoDB).
   • Define the required dependencies, environment variables, run commands and expose ports in the Dockerfile.
   • Create a docker-compose.yml file to define and configure the services required for the system.

8. Build and run the Docker containers:

   • Build the Docker images for each service using the docker build command.
   • Run the Docker containers using the docker-compose up command.
   • Verify that all the Docker containers are running and healthy.
   • Test the system to ensure that it is working as expected.

9. Create a README file:

   • Document the entire setup process, including prerequisites, installation steps, and any additional configurations required.
   • Provide instructions on how to build and run the Docker containers.
   • Include any relevant troubleshooting tips or known issues.

10. Share the files with the user:

    • Create a compressed archive (e.g., ZIP or TAR) containing the project files, Dockerfiles, and the README file.
    • Share the archive as an attachment using the messaging interface in the browser to the user.

Specifications

• Setup an environment for the following:

  • Latest Python version
  • Latest version of Apache Maven
  • Node.js for React
  • Kafka and Zookeeper
  • AWS DynamoDB

• Test the environment:

  • Verify that the environment is up, running, healthy, and working.

• Dockerize the entire environment.

• Create a README file with detailed instructions for setting up the environment.

• Share all the files with the user.

Advice and Pointers

• Do not create tables and schemas until unless specified by the user.
• Ensure that all the dependencies are installed correctly and the environment is set up properly before proceeding with the Dockerization.
• Test each component individually to ensure that it is working as expected.
• Document the setup process and configurations for future reference.
• Follow best practices for setting up the environment and Dockerizing the services.