Tom Proctor 95a135ead1 cmd/{containerboot,k8s-operator}: reissue auth keys for broken proxies (#16450)
Adds logic for containerboot to signal that it can't auth, so the
operator can reissue a new auth key. This only applies when running with
a config file and with a kube state store.

If the operator sees reissue_authkey in a state Secret, it will create a
new auth key iff the config has no auth key or its auth key matches the
value of reissue_authkey from the state Secret. This is to ensure we
don't reissue auth keys in a tight loop if the proxy is slow to start or
failing for some other reason. The reissue logic also uses a burstable
rate limiter to ensure there's no way a terminally misconfigured
or buggy operator can automatically generate new auth keys in a tight loop.

Additional implementation details (ChaosInTheCRD):

- Added `ipn.NotifyInitialHealthState` to ipn watcher, to ensure that
  `n.Health` is populated when notify's are returned.
- on auth failure, containerboot:
  - Disconnects from control server
  - Sets reissue_authkey marker in state Secret with the failing key
  - Polls config file for new auth key (10 minute timeout)
  - Restarts after receiving new key to apply it

- modified operator's reissue logic slightly:
  - Deletes old device from tailnet before creating new key
  - Rate limiting: 1 key per 30s with initial burst equal to replica count
  - In-flight tracking (authKeyReissuing map) prevents duplicate API calls
    across reconcile loops

Updates #14080

Change-Id: I6982f8e741932a6891f2f48a2936f7f6a455317f


(cherry picked from commit 969927c47c)

Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
Co-authored-by: chaosinthecrd <tom@tmlabs.co.uk>
2026-03-11 10:25:57 +00:00
2026-03-02 08:04:19 -08:00
2026-03-05 13:52:01 -08:00
2026-01-27 16:15:17 -08:00
2026-03-06 11:27:29 -08:00
2026-03-06 11:27:29 -08:00

Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

This repository contains the majority of Tailscale's open source code. Notably, it includes the tailscaled daemon and the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows, macOS, and to varying degrees on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's code, but this repo doesn't contain the mobile GUI code.

Other Tailscale repos of note:

For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.

Using

We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.

Other clients

The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.

Building

We always require the latest Go release, currently Go 1.25. (While we build releases with our Go fork, its use is not required.)

go install tailscale.com/cmd/tailscale{,d}

If you're packaging Tailscale for distribution, use build_dist.sh instead, to burn commit IDs and version info into the binaries:

./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled

If your distro has conventions that preclude the use of build_dist.sh, please do the equivalent of what it does in your distro's way, so that bug reports contain useful version information.

Bugs

Please file any issues about this code or the hosted service on the issue tracker.

Contributing

PRs welcome! But please file bugs. Commit messages should reference bugs.

We require Developer Certificate of Origin Signed-off-by lines in commits.

See commit-messages.md (or skim git log) for our commit message style.

About Us

Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:

WireGuard is a registered trademark of Jason A. Donenfeld.

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