Brad Fitzpatrick
3014ad828e
When a natlab node's "tailscale up" hung (TestEasyEasy on CI, twice on main), the only bound was the 10 minute test context, so the failure arrived as go test's timeout panic. The VM console logs weren't dumped (t.Cleanup doesn't run on a panic), and they wouldn't have helped anyway: on gokrazy the console holds only kernel and init output, while tailscaled's stdout/stderr goes to a remote syslog that vnet discards unless the node has VerboseSyslog set. There was no way to see what the stuck node was doing. Bound each node's "tailscale up" in Env.Start to 90 seconds (it takes about a second against the in-process control server), so a stuck node becomes a normal test failure. On failure, dump the tail of each node's tailscaled logs from vnet's fake log.tailscale.com log catcher, which already buffered them per node but exposed them to nothing; add Server.NodeLogs for that. Also add VMTEST_VERBOSE_SYSLOG=1 to stream the guests' syslog into the test output live, the vmtest equivalent of tstest/integration/nat's --log-tailscaled flag. With this, the CI hang reproduced locally under CPU pressure (2 CPUs shared with busy loops) in 1 of 22 runs, and the dumped logs showed tailscaled's control client stuck at "awaiting unpause", which is fixed separately. Updates #deflake Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Change-Id: Icfd3a2cdc66d924388a722f3a3cd19f86e116921
Tailscale
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:
- the Android app is at https://github.com/tailscale/tailscale-android
- the Synology package is at https://github.com/tailscale/tailscale-synology
- the QNAP package is at https://github.com/tailscale/tailscale-qpkg
- the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey
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 1.27. (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:
- https://github.com/tailscale/tailscale/graphs/contributors
- https://github.com/tailscale/tailscale-android/graphs/contributors
Legal
WireGuard is a registered trademark of Jason A. Donenfeld.