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Resetting OpenSSH Host Keys (the easy method)

When creating a deployment image or template for distributing Linux to devices or servers, it's a good idea to make sure that you reset the host keys for SSH. In this video, I'll show you an easy method I found for automating this. LEARN LINUX TV - YOUR HOME FOR LINUX-RELATED FUN AND LEARNING! 🎓 BRAND NEW UDEMY COURSES AVAILABLE! Check out my new courses on Udemy and learn something new! • Getting Started with Ansible ➜ https://learnlinux.link/ansible • LPI Linux Essentials Complete Workshop ➜ https://learnlinux.link/linux-essentials Support Linux Learning! • Grab some Linux swag from the official Merch Shop ➜ https://merch.learnlinux.tv • Become a Channel Member here on YouTube ➜ https://learnlinux.link/member • Become a Patron and gain access to exclusive perks ➜ https://learnlinux.link/patron • 5% discount on LPI exam vouchers ➜ https://learnlinux.link/lpi-voucher • Check out my latest book, Mastering Ubuntu Server 4th Edition ➜ https://ubuntuserverbook.com • Grab an awesome Pi-powered KVM ➜ https://learnlinux.link/tinypilot • Jay's Gear ➜ https://learnlinux.link/amazon Note: Royalties and/or commission is earned from each of the above links ⏰ TIME CODES 00:00 - Intro 02:27 - Creating a sample VM 06:09 - Resetting the machine-id 07:45 - Demonstrating the issue with host keys 13:27 - Adding a systemd unit to clear the SSH host keys 19:20 - Creating a Proxmox template with the systemd unit installed and enabled Relevant links Systemd unit file used in this video ➜ https://learnlinux.link/ssh-reset Official blog post for this video (contains the commands used) ➜ https://www.learnlinux.tv/?p=1665*🎓 FULL LINUX COURSES FROM LEARN LINUX TV* • Linux Crash Course ➜ https://linux.video/cc • Learn tmux ➜ https://linux.video/tmux • Learn vim ➜ https://linux.video/vim • Bash Scripting Series ➜ https://linux.video/bash • Proxmox VE ➜ https://linux.video/pve • Getting Started with Ansible (Udemy) ➜ https://learnlinux.link/ansible • LPI Linux Essentials Workshop (Udemy) ➜ https://learnlinux.link/linux-essentials 🌐 LEARN LINUX TV ON THE WEB • Main site ➜ https://www.learnlinux.tv • Community ➜ https://community.learnlinux.tv • Official Github Account ➜ https://github.com/LearnLinuxTV • Enterprise Linux Security Podcast ➜ https://enterpriselinuxsecurity.show • The Homelab Show Podcast ➜ https://thehomelab.show • Jay on Udemy ➜ https://www.udemy.com/user/jay-lacroix-3 • Jay on Twitter ➜ https://x.com/JayTheLinuxGuy • Content Ethics ➜ https://www.learnlinux.tv/content-ethics • Request Assistance ➜ https://www.learnlinux.tv/request-ass... ⚠️ DISCLAIMER Learn Linux TV provides technical content that will hopefully be helpful to you and teach you something new. However, this content is provided without any warranty (expressed or implied). Learn Linux TV is not responsible for any damages that may arise from any use of this content. Always make sure you have written permission before working with any infrastructure and that you are compliant with all company rules, change control procedures, and local laws. #OpenSSH #Linux #HostKeys