Open Source

Running Containers on AWS as per Business Requirements and Capabilities

We can run containers with EKS, ECS, Fargate, Lambda, App Runner, Lightsail, OpenShift or on just EC2 instances on AWS Cloud. In this post I will discuss on how to choose the AWS service based on our organization requirements and capabilities.

In-Short

CaveatWisdom

Caveat: Meeting the business objectives and goals can become difficult if we don’t choose the right service based on our requirements and capabilities.

Wisdom:

1. Understand the complexity of your application based on how many microservices and how they interact with each other.
2. Estimate how your application scales based on business.
3. Analyse the skillset and capabilities of your team and how much time you can spend for administration and learning.
4. Understand the policies and priorities of your organization in the long-term.

In-Detail

Build Docker Container for Java App and Deploying it on Amazon EKS

Github Link https://github.com/getramki/Deploy-JavaApp-On-EKS.git

This repo contains a Sample Spring Boot Java App with the dockerfile which uses Amazon Corretto 17 as base image and manifestes for creating an Amazon EKS cluster and deploying the sample app to the cluster as a container and exposing it with a service and classic load balancer.

Prerequisites

Docker, AWS Account and IAM user with necessary permissions for creating EKS Cluster, aws cli, configure IAM user with necessary programmatic permissions, eksctl cli, kubectl Please install and configure above before going further

Managed Services for Open-Source Technology on AWS Cloud

In-Short

CaveatWisdom

Caveat: Developing Solutions with Open-Source technologies gives us freedom from licensing and also run them anywhere we want, however it becomes increasingly complex and difficult to scale and manage at high velocities with Open Source.

Wisdom:

We easily can offload the management and scalability to the managed services in the cloud and concentrate more on our required business functionality. This can also save total cost of ownership (TCO) in the long term.

Query Lambda for RDS MySQL Private Database

Github link https://github.com/getramki/QueryLambda.git

It is important to create a database in private subnets in a VPC and not to expose it to internet, however it is challenging to connect to a private database instance and create the initial Schema and seed the database. This Query Lambda addresses this consern. This repo contains code for a Lambda function written in NodeJS and a SAM template to deploy it.

The Lambda function makes use of best practices of getting the secrets from Secrets Manager and using Layers for MySQL Package.