Practical writing on DevOps, AI and ML, architecture, data systems, and lessons learned while building software.https://rajeshscribe.com/https://rajeshscribe.com/blogs/llama32-vs-31https://rajeshscribe.com/blogs/llama32-vs-31Compare Llama 3.1 vs 3.2 across multimodal capabilities, model sizes, and practical use cases to choose the right model.Mon, 29 Sep 2025 00:00:00 GMTAI & MLhttps://rajeshscribe.com/blogs/keep-tf-resources-safe-from-accidental-deletionhttps://rajeshscribe.com/blogs/keep-tf-resources-safe-from-accidental-deletionLearn how to protect Terraform resources from accidental deletion using lifecycle.prevent_destroy and enable_deletion_protection. A must-read guide for DevOps engineers who value safe and stable infrastructure.Sun, 03 Aug 2025 00:00:00 GMTTerraformAwshttps://rajeshscribe.com/blogs/serverless-auth-with-aws-serviceshttps://rajeshscribe.com/blogs/serverless-auth-with-aws-servicesLearn how to build custom authentication APIs using AWS Cognito, Lambda, and API Gateway — without managing a single backend server. A serverless approach to secure, scalable, and cost-effective centralized auth.Fri, 18 Apr 2025 00:00:00 GMTAwsCognitohttps://rajeshscribe.com/blogs/python-webapp-with-cognito-authhttps://rajeshscribe.com/blogs/python-webapp-with-cognito-authSimple Python web application using Flask and AWS Cognito for authentication. The application supports both Hosted UI and custom login page for user authentication.Sun, 20 Oct 2024 00:00:00 GMTAwsCognitoPythonhttps://rajeshscribe.com/blogs/configure-ako-for-ekshttps://rajeshscribe.com/blogs/configure-ako-for-eksStep by step guide to configure Avi Kubernetes Operator (AKO) on EKS with Avi Controller.Sun, 24 Sep 2023 00:00:00 GMTAviKubernetesAWSTanzuhttps://rajeshscribe.com/blogs/install-avi-on-aws-for-ekshttps://rajeshscribe.com/blogs/install-avi-on-aws-for-eksA simplified guide to install NSX Advanced Load Balancer (Avi) on AWS to work with EKS cluster.Sun, 24 Sep 2023 00:00:00 GMTAviKubernetesTanzuAWShttps://rajeshscribe.com/blogs/containerize-nextjs-app-with-buildpackshttps://rajeshscribe.com/blogs/containerize-nextjs-app-with-buildpacksThis blog shows simple steps to containerize Next.js app using cloud native buildpacks.Wed, 02 Aug 2023 00:00:00 GMTDevOpsNextjsBuildpackshttps://rajeshscribe.com/blogs/how-to-containerize-nextjs-app-with-docker-buildhttps://rajeshscribe.com/blogs/how-to-containerize-nextjs-app-with-docker-buildSimple steps to containerize Next.js app deployed with npm packages using docker build.Wed, 02 Aug 2023 00:00:00 GMTDockerNextjshttps://rajeshscribe.com/blogs/simplify-cd-workflow-with-tmchttps://rajeshscribe.com/blogs/simplify-cd-workflow-with-tmcSimplified workflow to perform continuous delivery for apps with Tanzu Mission ControlSun, 02 Jul 2023 00:00:00 GMTDevOpsTanzuhttps://rajeshscribe.com/blogs/ssh-login-to-supervisor-node-in-tkghttps://rajeshscribe.com/blogs/ssh-login-to-supervisor-node-in-tkgWe might need to access supervisor node via ssh for troubleshooting or configuration need for Tanzu Kubernetes Grid as service configured in vSphere.Tue, 17 Jan 2023 00:00:00 GMTKubernetesTanzuhttps://rajeshscribe.com/blogs/how-to-setup-lightweight-ldap-server-with-dockerhttps://rajeshscribe.com/blogs/how-to-setup-lightweight-ldap-server-with-dockerThis blog aims to build an LDAP Server with docker and docker-compose. It serves useful to deploy temporary LDAP server for poc’s and testing our Microservices.Tue, 15 Feb 2022 00:00:00 GMTDevOpsDockerhttps://rajeshscribe.com/blogs/use-skaffold-for-local-development-in-simple-stepshttps://rajeshscribe.com/blogs/use-skaffold-for-local-development-in-simple-stepsThis blog is a comprehensive guide to build and deploy apps to Kubernetes with Skaffold. This tool provides simple workflow for local development of appsFri, 14 Jan 2022 00:00:00 GMTDevOpsKuberneteshttps://rajeshscribe.com/blogs/build-spring-boot-helloapp-in-simple-stepshttps://rajeshscribe.com/blogs/build-spring-boot-helloapp-in-simple-stepsA Helloapp to demonstrate the workflow and the tools features. I have built this app with Java using Spring Boot to build the MVC framework.Mon, 10 Jan 2022 00:00:00 GMTDevOpshttps://rajeshscribe.com/blogs/how-to-reset-password-in-linux-with-simple-stepshttps://rajeshscribe.com/blogs/how-to-reset-password-in-linux-with-simple-stepsThis blogs shares some simple steps to recover root password using Single User Mode from Linux GRUB.Mon, 10 Jan 2022 00:00:00 GMTLinuxhttps://rajeshscribe.com/blogs/sealed-secrets-secure-way-to-manage-secretshttps://rajeshscribe.com/blogs/sealed-secrets-secure-way-to-manage-secretsSealed Secrets provide a secure way to encrypt the Kubernetes secrets.Mon, 10 Jan 2022 00:00:00 GMTDevOpshttps://rajeshscribe.com/blogs/how-to-renew-certificate-manually-in-kuberneteshttps://rajeshscribe.com/blogs/how-to-renew-certificate-manually-in-kubernetesCertificate renewal for client certificates is a usual process for a long running Kubernetes clusters. This blog implements the steps for manual cert upgrade.Fri, 10 Dec 2021 00:00:00 GMTDevOpsKuberneteshttps://rajeshscribe.com/blogs/vagrant-box-customized-with-simple-stepshttps://rajeshscribe.com/blogs/vagrant-box-customized-with-simple-stepsIn this blog, we would go through steps to build custom vagrant box to use for environment provisioning.Wed, 10 Nov 2021 00:00:00 GMTLinuxVagranthttps://rajeshscribe.com/blogs/how-can-buildpacks-transforms-source-to-imagehttps://rajeshscribe.com/blogs/how-can-buildpacks-transforms-source-to-imageCloud Native Buildpacks provide capability to transform app source code to image. Being kubernetes-native, buildpacks provide an intuitive & robust image buildsSat, 01 May 2021 00:00:00 GMTDevOpsKpackhttps://rajeshscribe.com/blogs/kpack-a-guide-to-build-optimized-app-imagehttps://rajeshscribe.com/blogs/kpack-a-guide-to-build-optimized-app-imagekpack extends Kubernetes and utilizes it’s capabilities for building OCI images as a platform implementation of Cloud Native Buildpacks (CNB)Sat, 01 May 2021 00:00:00 GMTKubernetesKpackhttps://rajeshscribe.com/blogs/jenkins-install-on-kubernetes-in-3-simple-stepshttps://rajeshscribe.com/blogs/jenkins-install-on-kubernetes-in-3-simple-stepsA step-by-step guide to install a production grade Jenkins devops tool using helm chart on Kubernetes to serve CICD pipelines for same or different environment.Fri, 23 Apr 2021 00:00:00 GMTDevOps