Configuring Kubernetes Cluster Federation

Cluster federation in Kubernetes takes the concept of high availability to the next level by making clusters resilient. Multiple distributed clusters can be federated to ensure that the workload is available in at least one cluster.  Federation makes it easy to manage multiple clusters. It does so by providing 2 major building blocks: Sync resources […]

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Setup Private Docker Registry on Kubernetes

Setting Private Docker Registries, making sure that they are always up and running, the images inside it are safe and does not get lost is almost every time a requirement for organizations which are planning to use containers for their applications. Well, to make all these thing happen we have our awesome Kubernetes. Let’s see […]

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How Cluster Scale Up and Scale Down works in Kubernetes

Cluster autoscaler is one of the coolest features of Kubernetes (at least for me). This article will provide a deep explanation of what happens under the hood when a cluster is scaled up or down by the Cluster Autoscaler. Learn More on how to set up Cluster Autoscaler in Kubernetes running on AWS. How does […]

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Configure Cluster Autoscaler in Kubernetes

What is a Cluster Autoscaler? The cluster autoscaler on AWS scales worker nodes within any specified autoscaling group. In this article, we will learn how to set up a cluster autoscaler to spin up new nodes whenever any pod goes into pending state. For more details read here. This article assumes that you have set […]

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When should I use Multi-AZ as opposed to Read Replicas in RDS?

People get confused between RDS Multi-AZ feature and Read Replica feature and under a given situation which one to use. Let’s first cover what do we mean by Multi AZ and Read Replica and after that we will cover the differences between them and when to use them. Multi-AZ: In a Multi-AZ deployment, Amazon RDS automatically […]

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How does authorization work with multiple access control mechanisms in S3?

There are 3 ways we can control access to our S3 resources: IAM Policy: IAM policies specify what actions are allowed or denied on what AWS resources (e.g. allow ec2:TerminateInstance on the EC2 instance with instance_id=i-8b3620ec). You attach IAM policies to IAM users, groups, or roles, which are then subject to the permissions you’ve defined. […]

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List Resources in all Regions of another AWS Account

Now why would you do that? There can be many reasons, to have a visibility of all the resources in all of your AWS Accounts, for faster onboarding, cost calculations and many other reasons. REQUIREMENTS: In this blog I assume that you have 2 AWS accounts between which you want to enable cross account access. […]

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Run Lambda Function for more than 5 minutes

I have come across many use cases where people want to run their Lambda function for more than 5 minutes. For people who don’t know about AWS Lambda and its limitations, here’s a brief description: AWS Lambda is a compute service that lets you run code without provisioning or managing servers. AWS Lambda executes your […]

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