Learn Something New! - 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. *📖 Switch to Linux with my latest book!* Linux is one of the best decisions you can make for your computer — but knowing where to start is the hard part. This guide walks you through everything: choosing a distribution, installing it, and using it confidently every day. It'll be released very soon! 📌 *Join the announcement list here ➜ https://leanpub.com/switch-to-linux* *🔥 Top Recommendations* • Get $100 Credit to Practice on Akamai (Linode) ➜ https://learnlinux.link/linode • Linux Commands Cheat Sheet ➜ https://learnlinux.link/linux-commands • 30% Off Linux Foundation Certifications (Use code "LEARNLINUXTV") ➜ https://learnlinux.link/lf • Professional tutoring from yours truly ➜ https://learnlinux.link/tutor-me *🛠️ SysAdmin Tools* • Monitor your Infrastructure like a Pro with Netdata ➜ https://learnlinux.link/netdata • Check out TinyPilot, a Pi-Based Remote Access Solution ➜ https://learnlinux.link/tinypilot • Tips for Switching to Linux (ebook) ➜ https://learnlinux.link/linux-desktop-tips *🛡️ Privacy & Privacy* • Safeguard your Internet activity with Proton VPN (70% off) ➜ https://go.getproton.me/aff_c?offer_id=26&aff_id=16836 • Get Proton end-to-end Encrypted Email for $1/month ➜ https://go.getproton.me/aff_c?offer_id=7&aff_id=16836 *❤️ Support the Channel* • Enjoyed the video? Your support keeps this channel independent! • Become a Channel Member (Ad-Free & Early Access) ➜ https://learnlinux.link/join • Support on Patreon ➜ https://learnlinux.link/patron *🛍️ Featured Merch* • "apt install coffee" T-Shirt (My personal favorite) ➜ https://learnlinux.link/apt-install-coffee • Proxmox T-Shirt ➜ https://learnlinux.link/proxmox-shirt • Explore the Full Shop ➜ https://merch.learnlinux.tv *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* • Linux Crash Course ➜ https://linux.video/cc • Netdata ➜ https://linux.video/netdata • tmux ➜ https://linux.video/tmux • vim ➜ https://linux.video/vim • Bash Scripting ➜ https://linux.video/bash • Proxmox VE ➜ https://linux.video/pve • Ansible (Paid) ➜ https://learnlinux.link/ansible • LPI Linux Essentials (Paid) ➜ https://learnlinux.link/linux-essentials *🎓 More About Learn Linux TV* • Main site ➜ https://www.learnlinux.tv • Community Forums ➜ https://community.learnlinux.tv • Github Account ➜ https://github.com/LearnLinuxTV • Content Ethics ➜ https://www.learnlinux.tv/content-ethics • Request Paid Assistance ➜ https://www.learnlinux.tv/request-assistance _Note: Some links mentioned here are affiliate links. If you purchase through them, it helps support Learn Linux TV at no additional cost to you._ ⚠️ Use Content Responsibly Learn Linux TV shares technical content intended to teach and help you, but it comes with no warranty. The channel is not liable for any damages from its use. Always ensure you have proper permissions, follow company policies, and comply with all applicable laws while working with infrastructure. #OpenSSH #Linux #HostKeys