Mongo Sharded Cluster Monitoring with Django and Docker Compose

A simple sharded Mongo Cluster monitoring application using with Django and Docker to test replica set health.

It is designed to monitor and experimental purpose to investigate replica set behaviours during polling and under massive request. Django is used to virtualise the data on the backend. Moreover, Vue JS is used for frontend with Apexcharts.

Mongo Components

• Config Server (3 member replica set): config01,config02,config03
• 1 Shard (with 3 members replica set):
  • shard01a,shard01b, shard01c
• 1 Router (mongos): router

Docker Containers

This system uses Docker container to create an virtual environment to test our cluster. FOr this purpose we have defined resources to replica container. The container has 20% of total CPU and 200MB of memory of the host.

First Run (initial setup)

Start all of the containers (daemonized)

docker-compose up -d

Initialize the replica sets (config server and shards) and router

sh init.sh

This script has a sleep 20 to wait for the config server and shards to elect their primaries before initializing the router

Accessing the Mongo Shell

Its as simple as:

docker-compose exec router mongo

Resetting the Cluster

To remove all data and re-initialize the cluster, make sure the containers are stopped and then:

docker-compose rm

Execute the First Run instructions again.

Inspired by https://github.com/chefsplate/mongo-shard-docker-compose