MongoDB backup to S3 on Kubernetes- Alt Digital Technologies

 

Introduction

Kubernetes CronJob makes it very easy to run Jobs on a time-based schedule. These automated jobs run like Cron tasks on a Linux or UNIX system.

In this post, we’ll make use of Kubernetes CronJob to schedule a recurring backup of the MongoDB database and upload the backup archive to AWS S3.

There are several ways of achieving this, but then again, I had to stick to one using Kubernetes since I already have a Kubernetes cluster running.

Prerequisites: 

  • Docker installed on your machine
  • Container repository (Docker Hub, Google Container Registry, etc) – I’ve used docker hub
  • Kubernetes cluster running

Steps to achieve this:

  • MongoDB installed on the server and running or MongoDB Atlas – I’ve used Atlas
  • AWS CLI installed in a docker container
  • A bash script will be run on the server to backup the database
  • AWS S3 Bucket configured
  • Build and deploy on Kubernetes

MongoDB Setup:

You can set up a mongo database on your server or use a MongoDB Atlas cluster instead. The Atlas cluster is a great way to set up a mongo database and is free for M0 clusters. You can also use a mongo database on your server or on a Kubernetes cluster.

After creating your MongoDB instance, we will need the Connection String. Please keep it safe somewhere, we will need it later.

Choosing a connection string may confuse which one to pick. So we need to select the MongoDB Compass one that looks in the below format. Read more!!

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