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Forced Outage Drill

Category: Engineering  ·  Sub-category: testing  ·  Last updated:
Simulate a dependency outage on a live host (upstream DNS, an API endpoint, a backup target, a peer) to prove a watcher, failover or alert actually works, without paging anyone and without the drill passing for the wrong reason. Covers proving the block bites (nft counters plus a control) before trusting any result, why container egress needs a forward-hook chain, cache and stale-answer layers that hide the outage, a systemd-run dead-man revert, testing a new watcher against a throwaway instance on a spare port with stubbed alerting, and the drill sequence: baseline, failure surfaces, failover, recovery, cleanup. Trigger phrases include "failover drill", "simulate an outage", "force a failover", "test the watcher", "blackhole the upstream", "nft drop for a test", "dead-man revert", "does the alert actually fire", "drill without paging", "stub telegram", "prove the failover works".
Security CStatic scan: some findings — review before installHow grading works ›

From the source SKILL.md

A drill is only evidence if the outage really happened. The usual failure isn't a crash; it's a green result because the simulated fault never reached the thing under test. On 2026-10-23 a single DNS session hit this three times. All three looked like "the system copes fine":

What this skill does

Forced Outage Drill is a community-contributed Claude Code skill in the testing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/forced-outage-drill/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Forced Outage Drill Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 211,000+ 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/forced-outage-drill
curl -L https://claudskills.com/skills/forced-outage-drill/SKILL.md \
  -o ~/.claude/skills/forced-outage-drill/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/forced-outage-drill/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/forced-outage-drill/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\forced-outage-drill\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 Forced Outage Drill Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/forced-outage-drill/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Forced Outage Drill skill do?
Simulate a dependency outage on a live host (upstream DNS, an API endpoint, a backup target, a peer) to prove a watcher, failover or alert actually works, without paging anyone and without the drill passing for the wrong reason. Covers proving the block bites (nft counters plus a control) before trusting any result, why container egress needs a forward-hook chain, cache and stale-answer layers that hide the outage, a systemd-run dead-man revert, testing a new watcher against a throwaway instance on a spare port with stubbed alerting, and the drill sequence: baseline, failure surfaces, failover, recovery, cleanup. Trigger phrases include "failover drill", "simulate an outage", "force a failover", "test the watcher", "blackhole the upstream", "nft drop for a test", "dead-man revert", "does the alert actually fire", "drill without paging", "stub telegram", "prove the failover works".
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 Forced Outage Drill skill?
Use Forced Outage Drill when your Claude Code task falls under the Engineering category — specifically in the testing 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 Forced Outage Drill" or describe the task and let Claude pick). Browse related skills at /category/engineering/.
What is a Claude Code skill and how does the Forced Outage Drill 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. Forced Outage Drill is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering 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
jackson2w. (2026). Forced Outage Drill [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/forced-outage-drill/
BibTeX
@misc{forced-outage-drill-2026,
  author    = {jackson2w},
  title     = {Forced Outage Drill [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/forced-outage-drill/}
}

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Security scan

Grade C · scanned 2026-10-25 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 2 of 10 categories (network, reverse-shell), including a critical-severity pattern. 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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More Engineering skills

Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills
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