Title: Self Hosting - Immanuel Raj --- # Category: Self Hosting * [⌊How to Resize an AWS EBS Volume Without Downtime⌉⌊How to Resize an AWS EBS Volume Without Downtime⌉[ * ## 󠀁[How to Resize an AWS EBS Volume Without Downtime](https://immanuelraj.dev/resize-aws-ebs-volume/)󠁿 * [May 26, 2026](https://immanuelraj.dev/resize-aws-ebs-volume/) * — * by * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/) * in [Linux](https://immanuelraj.dev/category/linux/), [Self Hosting](https://immanuelraj.dev/category/self-hosting/) * Read Time * 3–5 minutes * A step-by-step guide to expanding AWS EBS volumes on a live EC2 instance — no downtime, no reboots, just three clean commands. * [⌊How I Audited 41 Ubuntu Servers for CVE-2026-31431 “Copy Fail” — and What I Found⌉⌊How I Audited 41 Ubuntu Servers for CVE-2026-31431 “Copy Fail” — and What I Found⌉[ * ## 󠀁[How I Audited 41 Ubuntu Servers for CVE-2026-31431 “Copy Fail” — and What I Found](https://immanuelraj.dev/copy-fail-cve-2026-31431-ubuntu-audit/)󠁿 * [May 5, 2026](https://immanuelraj.dev/copy-fail-cve-2026-31431-ubuntu-audit/) * — * by * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/) * in [Linux](https://immanuelraj.dev/category/linux/), [Security](https://immanuelraj.dev/category/security/), [Self Hosting](https://immanuelraj.dev/category/self-hosting/) * Read Time * 5–8 minutes * CVE-2026-31431 “Copy Fail” is a HIGH severity Linux kernel vulnerability that lets any local user gain root. I audited all 41 of my Ubuntu servers, found one actively exposed, applied the mitigation, and checked for compromise. Here’s the full technical breakdown. * ## 󠀁[Object Cache | Page Cache | OP Cache – Caching for WordPress](https://immanuelraj.dev/wordpress-caching-opcache-object-page-optimization/)󠁿 * [August 15, 2025](https://immanuelraj.dev/wordpress-caching-opcache-object-page-optimization/) * — * by * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/) * in [Self Hosting](https://immanuelraj.dev/category/self-hosting/), [SSL](https://immanuelraj.dev/category/ssl/) * Read Time * 7–11 minutes * Master WordPress performance with comprehensive caching strategies. Learn OPcache, Object Caching, and Page Caching implementation for lightning-fast websites, reduced server load, and optimal user experience. * [⌊A tech-themed image with a dark background. A glowing orange Ubuntu logo on the left is connected to a glowing blue globe (representing the internet) on the right by a line with the word 'Netplan' in the center.⌉⌊A tech-themed image with a dark background. A glowing orange Ubuntu logo on the left is connected to a glowing blue globe (representing the internet) on the right by a line with the word 'Netplan' in the center.⌉[ * ## 󠀁[How to Add Floating IP to Ubuntu and Debian Servers with Netplan](https://immanuelraj.dev/netplan-floating-ip-configuration/)󠁿 * [August 14, 2025](https://immanuelraj.dev/netplan-floating-ip-configuration/) * — * by * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/) * in [Linux](https://immanuelraj.dev/category/linux/), [Networking](https://immanuelraj.dev/category/networking/), [Self Hosting](https://immanuelraj.dev/category/self-hosting/) * Read Time * 8–11 minutes * Learn how to configure floating IP addresses on Ubuntu and Debian servers using Netplan for high availability and seamless failover. This comprehensive guide covers YAML configuration, troubleshooting, security best practices, and automation scripts for production environments. * [⌊Automating Flask Deployment Using Docker and Github Actions⌉⌊Automating Flask Deployment Using Docker and Github Actions⌉[ * ## 󠀁[Automating Flask Deployment Using Docker and Github Actions](https://immanuelraj.dev/automating-flask-deployment-using-docker-and-github-actions/)󠁿 * [September 23, 2024](https://immanuelraj.dev/automating-flask-deployment-using-docker-and-github-actions/) * — * by * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/) * in [Docker](https://immanuelraj.dev/category/docker/), [Github Actins](https://immanuelraj.dev/category/github-actins/), [Self Hosting](https://immanuelraj.dev/category/self-hosting/) * Read Time * 2–3 minutes * I’ve had enough of tedious deployments, so I decided to become proficient in automating the process. While I’ve previously used GitHub Actions to streamline deployments, I had yet to do so in a Flask environment. In this article, I’ll outline the steps I followed to deploy my Flask backend using Docker and GitHub Actions, specifically… * ## 󠀁[Cloudflare Header Tips](https://immanuelraj.dev/cloudflare-header-tips/)󠁿 * [April 3, 2024](https://immanuelraj.dev/cloudflare-header-tips/) * — * by * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/) * in [Cloudflare](https://immanuelraj.dev/category/cloudflare/), [Security](https://immanuelraj.dev/category/security/), [Self Hosting](https://immanuelraj.dev/category/self-hosting/), [SSL](https://immanuelraj.dev/category/ssl/), [Web](https://immanuelraj.dev/category/web/) * Read Time * 2–3 minutes * I am pretty sure any developer would have known about cloudflare. Be it for Hosting, Ai, Storage, Mail, Security, Infra, Tunnels, DNS etc. When you are a guy who uses free stuff to get things done for you, you cannot pay for things that you want, but also cannot stop from getting good things. Not… * [⌊OpenResty SSL Setup: Install and Secure Site withNginx with Let’s Encrypt on Ubuntu⌉⌊OpenResty SSL Setup: Install and Secure Site withNginx with Let’s Encrypt on Ubuntu⌉[ * ## 󠀁[OpenResty SSL Setup: Install and Secure Site withNginx with Let’s Encrypt on Ubuntu](https://immanuelraj.dev/nginx-openresty-ssl-setup-ubuntu/)󠁿 * [January 17, 2024](https://immanuelraj.dev/nginx-openresty-ssl-setup-ubuntu/) * — * by * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/) * in [Linux](https://immanuelraj.dev/category/linux/), [Self Hosting](https://immanuelraj.dev/category/self-hosting/), [SSL](https://immanuelraj.dev/category/ssl/), [Web](https://immanuelraj.dev/category/web/) * Read Time * 2–3 minutes * Learn how to install and configure OpenResty Nginx SSL on Ubuntu. This guide covers setting up OpenResty, obtaining an SSL certificate using Certbot, and enabling auto-renewal for a secure HTTPS website. 🚀