a7cb5745a2
* tstest/natlab/vmtest: make cloud VM boot robust without KVM Adding heavier distro images (Fedora) surfaced several ways the cloud VM boot path breaks under TCG software emulation (no /dev/kvm), especially with multiple concurrent VMs on few cores. - Add a virtio-rng device to the cloud path so early boot doesn't block in getrandom() waiting for the CRNG to seed. - When no hardware acceleration is available, relax the stuck-console watchdog (tuned for KVM's ~1-2s first output) and serialize VM boots so a heavy guest doesn't starve its siblings' emulation threads. - Bound the bring-up context to the test deadline and dump each VM's console on failure, so a hang surfaces as a diagnosable Fatalf instead of an opaque `go test -timeout` panic (which skips cleanups). Fixes tailscale/corp#44794 Updates tailscale/corp#44793 Signed-off-by: Brendan Creane <bcreane@gmail.com> * tstest/natlab/vmtest: add Fedora and DNS-backend test coverage Add the first RHEL-family distro and the machinery to assert and provision distinct DNS backends, so adding a distro isn't "basically equivalent" to the others. - Add a Fedora 43 image (NetworkManager + systemd-resolved, SELinux enforcing). restorecon-relabel the curl'd binaries so they exec under enforcing mode. - Add DNSBackend/AssertDNSBackend, reading the dns_manager_linux_mode_* clientmetric to assert which backend tailscaled selected. - Add a WithDNSMode node option. WithDNSMode(DNSDirect) masks systemd-resolved and writes a plain resolv.conf pointing at natlab's fake DNS, forcing the direct backend -- so one image covers multiple backends. Fixes tailscale/corp#44796 Updates tailscale/corp#44793 Signed-off-by: Brendan Creane <bcreane@gmail.com> --------- Signed-off-by: Brendan Creane <bcreane@gmail.com>
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 1.26. (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.