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Ubuntu Cloud Init

Category: Dev Tools  ·  Sub-category: tools-misc  ·  Last updated:
Author, validate, and debug cloud-init configuration for Ubuntu Server LTS 24.04 and 26.04, focused on on-premise and air-gapped hosts via the NoCloud datasource — `#cloud-config` user-data, the cloud-config modules (users, ssh, write_files, runcmd, apt with local mirrors, ca_certs for internal CAs, ntp, disk_setup), NoCloud seeding (seed dir, `cidata` ISO, `ds=nocloud;s=...` kernel cmdline, SMBIOS serial), boot stages, and pinning `datasource_list`. Public-cloud datasources (EC2/Azure/GCE…) are pointers only. For the `network:` block use the ubuntu-netplan skill; for the installer schema use the ubuntu-autoinstall skill.
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From the source SKILL.md

cloud-init runs early in boot, reads configuration from a datasource, and applies it through modules across four boot stages. This skill is authoring-led (produce correct cloud-config from a description) with a strong validation/debug path, aimed at on-prem / air-gapped Ubuntu Server LTS using the NoCloud datasource.

What this skill does

Ubuntu Cloud Init is a community-contributed Claude Code skill in the tools-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/ubuntu-cloud-init/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Ubuntu Cloud Init Claude Code skill is built for developers, power users, and teams automating repetitive workflows and improving developer experience. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/ubuntu-cloud-init
curl -L https://claudskills.com/skills/ubuntu-cloud-init/SKILL.md \
  -o ~/.claude/skills/ubuntu-cloud-init/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/ubuntu-cloud-init/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/ubuntu-cloud-init/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\ubuntu-cloud-init\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Ubuntu Cloud Init Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/ubuntu-cloud-init/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Ubuntu Cloud Init skill do?
Author, validate, and debug cloud-init configuration for Ubuntu Server LTS 24.04 and 26.04, focused on on-premise and air-gapped hosts via the NoCloud datasource — `#cloud-config` user-data, the cloud-config modules (users, ssh, write_files, runcmd, apt with local mirrors, ca_certs for internal CAs, ntp, disk_setup), NoCloud seeding (seed dir, `cidata` ISO, `ds=nocloud;s=...` kernel cmdline, SMBIOS serial), boot stages, and pinning `datasource_list`. Public-cloud datasources (EC2/Azure/GCE…) are pointers only. For the `network:` block use the ubuntu-netplan skill; for the installer schema use the ubuntu-autoinstall skill.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Ubuntu Cloud Init skill?
Use Ubuntu Cloud Init when your Claude Code task falls under the Dev Tools category — specifically in the tools misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Ubuntu Cloud Init" or describe the task and let Claude pick). Browse related skills at /category/tools/.
What is a Claude Code skill and how does the Ubuntu Cloud Init skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Ubuntu Cloud Init is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Dev Tools category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
air-gapped. (2026). Ubuntu Cloud Init [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/ubuntu-cloud-init/
BibTeX
@misc{ubuntu-cloud-init-2026,
  author    = {air-gapped},
  title     = {Ubuntu Cloud Init [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/ubuntu-cloud-init/}
}

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Security scan

Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (network), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

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