https://explainit.metacog.co.kr/tags/automation/Recent content in Automation on Explain ItHugoen-usSat, 25 Jul 2026 06:48:21 +0900https://explainit.metacog.co.kr/posts/2026-07-25-hashicorp-packer-the-cookie-cutter-for-computers/Sat, 25 Jul 2026 06:48:21 +0900https://explainit.metacog.co.kr/posts/2026-07-25-hashicorp-packer-the-cookie-cutter-for-computers/<h2 id="-what-is-it">🤔 What Is It?</h2> <blockquote> <p><strong>hashicorp packer</strong></p> </blockquote> <p>Packer is a tool that automatically builds a perfect, ready-to-copy computer setup — like a cookie cutter — so you can stamp out hundreds of identical servers in seconds instead of setting each one up by hand.</p> <h2 id="-like-designing-one-perfect-cookie-cutter-then-stamping-out-thousands-of-identical-cookies">🧩 Like designing one perfect cookie cutter, then stamping out thousands of identical cookies</h2> <p>Imagine you need to bake 500 identical star-shaped cookies for a giant school bake sale. You could cut each cookie by hand with a knife — painfully slow and never quite the same — or you could design one perfect star-shaped cookie cutter, press it into dough, and get a perfect star every single time. Packer is the machine that designs and stamps out your cookie cutter. You write a recipe card that says exactly what shape the cutter should be and what ingredients go in. Packer then sets up a pop-up kitchen, carefully crafts the perfect cutter, and hands it to you. Whenever you need a new cookie — a new server — you just press the cutter in: no measuring, no guessing, just instant perfect copies every time.</p>