6ee7bcb458
* cmd/{k8s-operator,containerboot,k8s-proxy},kube: support IPv6 in egress ProxyGroup
Add support for dual-stack and IPv6 clusters in egress ProxyGroup.
Previously, egress ProxyGroup only supported IPv4: the operator and
containerboot assumed IPv4 for ClusterIP Services, EndpointSlices,
and health check headers.
This change introduces the following:
- Create a per-family EndpointSlice instead of a single IPv4
EndpointSlice.
- Update the egress services readiness reconciler to account for
both IPv4 and IPv6 EndpointSlices.
- Update the pod readiness reconciler to use the primary Pod IP
(PodIPs[0]) for readiness checks, instead of hard-coding to use
IPv4.
- Update the /healthz handler to return both PodIPv4Header and
PodIPv6Header.
- Add an IPv6 address field to egress status.
- Update containerboot and k8s-proxy to use the new health check
logic.
Updates tailscale/corp#41677
Change-Id: If66a3146df48c75b1e65a71632bbc9fc75feded2
Signed-off-by: Becky Pauley <becky@tailscale.com>
* cmd/{k8s-operator,containerboot}: improve dual-stack egress ProxyGroup
On dual-stack clusters, an egress ProxyGroup Service has one EndpointSlice
per IP family (IPv4 and IPv6). However, EndpointSlices were only recreated
when the ExternalName Service configuration changed, so a deleted
EndpointSlice was not recreated. The egress readiness reconciler also had
no mechanism to identify which IP families should exist (previously only
an IPv4 EndpoitSlice was required).
We now create an EndpointSlice for every IP family the ClusterIP Service
supports.
Also mark an egress Service NotReady when an EndpointSlice for an expected IP
family (derived from the Service's ClusterIPs) is missing, so a
dual-stack Service missing a family's EndpointSlice is no longer reported
Ready.
Clarify that the egress pre-shutdown and Pod readiness health checks
verify only one IP family on dual-stack clusters.
Change-Id: I35b03daf76ac817cd516e9a731770b2d85f6ee16
Signed-off-by: Becky Pauley <becky@tailscale.com>
---------
Signed-off-by: Becky Pauley <becky@tailscale.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.