KUBERNETES(1)(kubernetes)

✨ KUBERNETES(1)(kubernetes) — bestie edition ✨

okay so you're in the kubernetes manual, section 1, and we're talking about kubeadm config 💖

---

🌸 NAME 🌸

kubeadm config — Manage configuration for a kubeadm cluster persisted in a ConfigMap in the cluster

---

🦋 SYNOPSIS 🦋

kubeadm config [OPTIONS]

---

👑 DESCRIPTION 👑

okay so picture this: there's a ConfigMap chillin' in the kube-system namespace called kubeadm-config, and that's literally where kubeadm keeps all its internal tea about your cluster. like, the whole vibe of your cluster's config? it's in there. 💅

kubeadm CLI v1.8.0+ auto-creates this ConfigMap for you, filled with whatever config you used when you ran kubeadm init. no cap, it just does it. ✨

BUT. and this is the important part bestie, so listen up 🫶 — if you initialized your cluster with kubeadm v1.7.x or lower, that ConfigMap is not there, and you must run the kubeadm init phase upload-config command to make it happen. it's not optional, it's giving required.

why tho? because kubeadm upgrade needs that ConfigMap to configure your upgraded cluster correctly. no ConfigMap, no correct upgrade. periodt. 😭

---

💖 OPTIONS 💖

• --kubeconfig="/etc/kubernetes/admin.conf" — the kubeconfig file to use when talking to the cluster. if you don't set this flag, kubeadm will go searching through a set of standard locations looking for an existing kubeconfig file, like it's checking every pocket of its jacket for its keys. 🔑

---

🌈 OPTIONS INHERITED FROM PARENT COMMANDS 🌈

• --rootfs="" — the path to the 'real' host root filesystem. setting this makes kubeadm chroot into the path you give it. very main character of it ngl.
• --version=false — --version, --version=raw prints version information and quits; --version=vX.Y.Z... sets the reported version. so like, you can ask it what version it is, or you can tell it what version to say it is. iconic. 👑

---

🎀 SEE ALSO 🎀

kubeadm(1), kubeadm-config-images(1), kubeadm-config-migrate(1), kubeadm-config-print(1), kubeadm-config-validate(1),

---

⭐ HISTORY ⭐

January 2015, originally compiled by Eric Paris (eparis at redhat dot com) based on the kubernetes source material, but hopefully they have been automatically generated since! 🙈

---

and that's the whole page bestie, we ate that 💅✨ this was Manuals / User / KUBERNETES(1)(kubernetes) — sourced from that version, dated Jan 2015, compiled by Eric Paris. love u, go configure ur cluster responsibly 🫶💖🌸