/mongodb-replica-docker-compose

Primary LanguagePowerShell

MongoDB Replica Set Setup with Docker Compose

This README file provides instructions on how to set up a MongoDB replica set using Docker Compose, verify the setup, and connect to the cluster using MongoDB Compass.

Prerequisites

  • Docker
  • Docker Compose

Steps to Set Up MongoDB Replica Set

  1. Clone the Repository

    git clone <repository_url>
cd <repository_directory>

  2. Create and Start the Containers Run the following command to start the MongoDB containers:

    docker-compose up -d --build

  3. Verify the Replica Set Configuration To ensure the replica set is configured correctly, run the following command:

    docker exec -it mongo1 mongo --eval "rs.status()"

    You should see output similar to:

    {
  "set": "rs0",
  "date": ISODate("2024-08-01T13:33:12Z"),
  "myState": 1,
  "members": [
    {
      "_id": 0,
      "name": "mongo1:27017",
      "state": 1,
      "stateStr": "PRIMARY",
      ...
    },
    {
      "_id": 1,
      "name": "mongo2:27017",
      "state": 2,
      "stateStr": "SECONDARY",
      ...
    },
    {
      "_id": 2,
      "name": "mongo3:27017",
      "state": 2,
      "stateStr": "SECONDARY",
      ...
    }
  ],
  "ok": 1
}

Connecting to MongoDB Replica Set with MongoDB Compass

  1. Open MongoDB Compass

  2. Create a New Connection

  3. Enter the Connection Details

    • Hostname: mongo1
    • Port: 27017
    • Replica Set Name: rs0
    • Additional Members:
      • mongo2:27017
      • mongo3:27017

    Example connection string format:

    mongodb://mongo1:27017,mongo2:27017,mongo3:27017/?replicaSet=rs0

Additional Information

  • Ensure that Docker and Docker Compose are installed and running on your machine.
  • Ensure that the mongo or mongosh command-line tools are installed and available in your system's PATH.