Commit Graph

1869 Commits (3f3edeec07ebef2d34e3eb3bf91cb540183ac3b1)

Author SHA1 Message Date
Irbe Krumina 53d9cac196
k8s-operator/apis/v1alpha1,cmd/k8s-operator/deploy/examples: update DNSConfig description (#11971)
Also removes hardcoded image repo/tag from example DNSConfig resource
as the operator now knows how to default those.

Updates tailscale/tailscale#11019

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
6 months ago
Tom Proctor 23e26e589f
cmd/k8s-operator,k8s-opeerator: include Connector's MagicDNS name and tailnet IPs in status (#12359)
Add new fields TailnetIPs and Hostname to Connector Status. These
contain the addresses of the Tailscale node that the operator created
for the Connector to aid debugging.

Fixes #12214

Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
6 months ago
Irbe Krumina 3a6d3f1a5b
cmd/k8s-operator,k8s-operator,go.{mod,sum}: make individual proxy images/image pull policies configurable (#11928)
cmd/k8s-operator,k8s-operator,go.{mod,sum}: make individual proxy images/image pull policies configurable

Allow to configure images and image pull policies for individual proxies
via ProxyClass.Spec.StatefulSet.Pod.{TailscaleContainer,TailscaleInitContainer}.Image,
and ProxyClass.Spec.StatefulSet.Pod.{TailscaleContainer,TailscaleInitContainer}.ImagePullPolicy
fields.
Document that we have images in ghcr.io on the relevant Helm chart fields.

Updates tailscale/tailscale#11675

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
6 months ago
Andrew Dunham e88a5dbc92 various: fix lint warnings
Some lint warnings caught by running 'make lint' locally.

Updates #cleanup

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I1534ed6f2f5e1eb029658906f9d62607dad98ca3
6 months ago
Brad Fitzpatrick 8a11a43c28 cmd/derpprobe: support 'local' derpmap to get derp map via LocalAPI
To make it easier for people to monitor their custom DERP fleet.

Updates tailscale/corp#20654

Change-Id: Id8af22936a6d893cc7b6186d298ab794a2672524
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 months ago
Jordan Whited 6e106712f6
cmd/stunstamp: support probing multiple ports (#12356)
Updates tailscale/corp#20344

Signed-off-by: Jordan Whited <jordan@tailscale.com>
6 months ago
Maisem Ali 36e8e8cd64 wgengine/magicsock: use math/rands/v2
Updates #11058

Co-authored-by: James Tucker <james@tailscale.com>
Signed-off-by: Maisem Ali <maisem@tailscale.com>
6 months ago
Fran Bull 573c8bd8c7 cmd/natc: add --wg-port flag
Updates tailscale/corp#20503

Signed-off-by: Fran Bull <fran@tailscale.com>
6 months ago
Maisem Ali 4a8cb1d9f3 all: use math/rand/v2 more
Updates #11058

Signed-off-by: Maisem Ali <maisem@tailscale.com>
6 months ago
Fran Bull d2d459d442 cmd/natc: add --ignore-destinations flag
Updates tailscale/corp#20503

Signed-off-by: Fran Bull <fran@tailscale.com>
6 months ago
Jordan Whited cf1e6c6e55
cmd/stunstamp: fix remote write retry (#12348)
Evaluation of remote write errors was using errors.Is() where it should
have been using errors.As().

Updates tailscale/corp#20344

Signed-off-by: Jordan Whited <jordan@tailscale.com>
6 months ago
Irbe Krumina 82576190a7
tailcfg,cmd/k8s-operator: moves tailscale.com/cap/kubernetes peer cap to tailcfg (#12235)
This is done in preparation for adding kubectl
session recording rules to this capability grant that will need to
be unmarshalled by control, so will also need to be
in a shared location.

Updates tailscale/corp#19821

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
6 months ago
signed-long 1dc3136a24
cmd/k8s-operator: Support image 'repo' or 'repository' keys in helm values file (#12285)
cmd/k8s-operator/deploy/chart: Support image 'repo' or 'repository' keys in helm values

Fixes #12100

Signed-off-by: Michael Long <michaelongdev@gmail.com>
6 months ago
Jordan Whited ba0dd493c8
cmd/stunstamp: validate STUN tx ID in responses (#12339)
Extremely late arriving responses may leak across probing intervals.

Updates tailscale/corp#20344

Signed-off-by: Jordan Whited <jordan@tailscale.com>
6 months ago
Maisem Ali 2f2f588c80 cmd/natc: use ListenPacket
Now that tsnet supports it, use it.

Updates tailscale/corp#20503

Signed-off-by: Maisem Ali <maisem@tailscale.com>
6 months ago
Maisem Ali 0b1a8586eb cmd/natc: initial implementation of a NAT based connector
This adds a new prototype `cmd/natc` which can be used
to expose a services/domains to the tailnet.

It requires the user to specify a set of IPv4 prefixes
from the CGNAT range. It advertises these as normal subnet
routes. It listens for DNS on the first IP of the first range
provided to it.

When it gets a DNS query it allocates an IP for that domain
from the v4 range. Subsequent connections to the assigned IP
are then tcp proxied to the domain.

It is marked as a WIP prototype and requires the use of the
`TAILSCALE_USE_WIP_CODE` env var.

Updates tailscale/corp#20503

Signed-off-by: Maisem Ali <maisem@tailscale.com>
6 months ago
Jordan Whited d21c00205d
cmd/stunstamp: implement service to measure DERP STUN RTT (#12241)
stunstamp timestamping includes userspace and SO_TIMESTAMPING kernel
timestamping where available. Measurements are written locally to a
sqlite DB, exposed over an HTTP API, and written to prometheus
via remote-write protocol.

Updates tailscale/corp#20344

Signed-off-by: Jordan Whited <jordan@tailscale.com>
6 months ago
Maisem Ali 42cfbf427c tsnet,wgengine/netstack: add ListenPacket and tests
This adds a new ListenPacket function on tsnet.Server
which acts mostly like `net.ListenPacket`.

Unlike `Server.Listen`, this requires listening on a
specific IP and does not automatically listen on both
V4 and V6 addresses of the Server when the IP is unspecified.

To test this, it also adds UDP support to tsdial.Dialer.UserDial
and plumbs it through the localapi. Then an associated test
to make sure the UDP functionality works from both sides.

Updates #12182

Signed-off-by: Maisem Ali <maisem@tailscale.com>
6 months ago
Irbe Krumina c2a4719e9e
cmd/tailscale/cli: allow 'tailscale up' to succeed if --stateful-filtering is not explicitly set on linux (#12312)
This fixes an issue where, on containerized environments an upgrade
1.66.3 -> 1.66.4 failed with default containerboot configuration.
This was because containerboot by default runs 'tailscale up'
that requires all previously set flags to be explicitly provided
on subsequent runs and we explicitly set --stateful-filtering
to true on 1.66.3, removed that settingon 1.66.4.

Updates tailscale/tailscale#12307

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
Co-authored-by: Andrew Lytvynov <awly@tailscale.com>
6 months ago
ChandonPierre 0a5bd63d32
ipn/store/kubestore, cmd/containerboot: allow overriding client api server URL via ENV (#12115)
Updates tailscale/tailscale#11397

Signed-off-by: Chandon Pierre <cpierre@coreweave.com>
6 months ago
Anton Tolchanov 32120932a5 cmd/tailscale/cli: print node signature in `tailscale lock status`
- Add current node signature to `ipnstate.NetworkLockStatus`;
- Print current node signature in a human-friendly format as part
  of `tailscale lock status`.

Examples:

```
$ tailscale lock status
Tailnet lock is ENABLED.

This node is accessible under tailnet lock. Node signature:
SigKind: direct
Pubkey: [OTB3a]
KeyID: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943
WrappingPubkey: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943

This node's tailnet-lock key: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943

Trusted signing keys:
	tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943	1	(self)
	tlpub:6fa21d242a202b290de85926ba3893a6861888679a73bc3a43f49539d67c9764	1	(pre-auth key kq3NzejWoS11KTM59)
```

For a node created via a signed auth key:

```
This node is accessible under tailnet lock. Node signature:
SigKind: rotation
Pubkey: [e3nAO]
Nested:
  SigKind: credential
  KeyID: tlpub:6fa21d242a202b290de85926ba3893a6861888679a73bc3a43f49539d67c9764
  WrappingPubkey: tlpub:3623b0412cab0029cb1918806435709b5947ae03554050f20caf66629f21220a
```

For a node that rotated its key a few times:

```
This node is accessible under tailnet lock. Node signature:
SigKind: rotation
Pubkey: [DOzL4]
Nested:
  SigKind: rotation
  Pubkey: [S/9yU]
  Nested:
    SigKind: rotation
    Pubkey: [9E9v4]
    Nested:
      SigKind: direct
      Pubkey: [3QHTJ]
      KeyID: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943
      WrappingPubkey: tlpub:2faa280025d3aba0884615f710d8c50590b052c01a004c2b4c2c9434702ae9d0
```

Updates tailscale/corp#19764

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
6 months ago
Brad Fitzpatrick 1ea100e2e5 cmd/tailscaled, ipn/conffile: support ec2 user-data config file
Updates #1412
Updates #1866

Change-Id: I4d08fb233b80c2078b3b28ffc18559baabb4a081
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 months ago
signed-long 5ad0dad15e
go generate directives reorder for 'make kube-generate-all' (#12210)
Fixes #11980

Signed-off-by: Michael Long <michaelongdev@gmail.com>
6 months ago
Irbe Krumina d0d33f257f
cmd/k8s-operator: add a note pointing at ProxyClass (#12246)
Updates tailscale/tailscale#12242

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
6 months ago
Maisem Ali 9a64c06a20 all: do not depend on the testing package
Discovered while looking for something else.

Updates tailscale/corp#18935

Signed-off-by: Maisem Ali <maisem@tailscale.com>
6 months ago
Brad Fitzpatrick 3c9be07214 cmd/derper: support TXT-mediated unpublished bootstrap DNS rollouts
Updates tailscale/coral#127

Change-Id: I2712c50630d0d1272c30305fa5a1899a19ffacef
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 months ago
Irbe Krumina 72f0f53ed0
cmd/k8s-operator: fix typo (#12217)
Fixes#cleanup

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
6 months ago
James Tucker 9351eec3e1 net/netcheck: remove hairpin probes
Palo Alto reported interpreting hairpin probes as LAND attacks, and the
firewalls may be responding to this by shutting down otherwise in use NAT sessions
prematurely. We don't currently make use of the outcome of the hairpin
probes, and they contribute to other user confusion with e.g. the
AirPort Extreme hairpin session workaround. We decided in response to
remove the whole probe feature as a result.

Updates #188
Updates tailscale/corp#19106
Updates tailscale/corp#19116

Signed-off-by: James Tucker <james@tailscale.com>
6 months ago
Andrew Lytvynov c9179bc261
various: disable stateful filtering by default (#12197)
After some analysis, stateful filtering is only necessary in tailnets
that use `autogroup:danger-all` in `src` in ACLs. And in those cases
users explicitly specify that hosts outside of the tailnet should be
able to reach their nodes. To fix local DNS breakage in containers, we
disable stateful filtering by default.

Updates #12108

Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
6 months ago
Brad Fitzpatrick 964282d34f ipn,wgengine: remove vestigial Prefs.AllowSingleHosts
It was requested by the first customer 4-5 years ago and only used
for a brief moment of time. We later added netmap visibility trimming
which removes the need for this.

It's been hidden by the CLI for quite some time and never documented
anywhere else.

This keeps the CLI flag, though, out of caution. It just returns an
error if it's set to anything but true (its default).

Fixes #12058

Change-Id: I7514ba572e7b82519b04ed603ff9f3bdbaecfda7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
6 months ago
Jordan Whited adb7a86559
cmd/stunc: support ipv6 address targets (#12166)
Updates #cleanup

Signed-off-by: Jordan Whited <jordan@tailscale.com>
6 months ago
James Tucker 8d1249550a net/netcheck,wgengine/magicsock: add potential workaround for Palo Alto DIPP misbehavior
Palo Alto firewalls have a typically hard NAT, but also have a mode
called Persistent DIPP that is supposed to provide consistent port
mapping suitable for STUN resolution of public ports. Persistent DIPP
works initially on most Palo Alto firewalls, but some models/software
versions have a bug which this works around.

The bug symptom presents as follows:

- STUN sessions resolve a consistent public IP:port to start with
- Much later netchecks report the same IP:Port for a subset of
  sessions, most often the users active DERP, and/or the port related
  to sustained traffic.
- The broader set of DERPs in a full netcheck will now consistently
  observe a new IP:Port.
- After this point of observation, new inbound connections will only
  succeed to the new IP:Port observed, and existing/old sessions will
  only work to the old binding.

In this patch we now advertise the lowest latency global endpoint
discovered as we always have, but in addition any global endpoints that
are observed more than once in a single netcheck report. This should
provide viable endpoints for potential connection establishment across
a NAT with this behavior.

Updates tailscale/corp#19106

Signed-off-by: James Tucker <james@tailscale.com>
6 months ago
Andrea Gottardo e5f67f90a2
xcode: allow ICMP ping relay on macOS + iOS platforms (#12048)
Fixes tailscale/tailscale#10393
Fixes tailscale/corp#15412
Fixes tailscale/corp#19808

On Apple platforms, exit nodes and subnet routers have been unable to relay pings from Tailscale devices to non-Tailscale devices due to sandbox restrictions imposed on our network extensions by Apple. The sandbox prevented the code in netstack.go from spawning the `ping` process which we were using.

Replace that exec call with logic to send an ICMP echo request directly, which appears to work in userspace, and not trigger a sandbox violation in the syslog.

Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
6 months ago
Irbe Krumina 76c30e014d
cmd/containerboot: warn when an ingress proxy with an IPv4 tailnet address is being created for an IPv6 backend(s) (#12159)
Updates tailscale/tailscale#12156

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
6 months ago
Maisem Ali 486a423716 tsnet: split user facing and backend logging
This adds a new `UserLogf` field to the `Server` struct.
When set this any logs generated by Server are logged using
`UserLogf` and all spammy backend logs are logged to `Logf`.

If it `UserLogf` is unset, we default to `log.Printf` and
if `Logf` is unset we discard all the spammy logs.

Fixes #12094

Signed-off-by: Maisem Ali <maisem@tailscale.com>
7 months ago
Irbe Krumina d86d1e7601
cmd/k8s-operator,cmd/containerboot,ipn,k8s-operator: turn off stateful filter for egress proxies. (#12075)
Turn off stateful filtering for egress proxies to allow cluster
traffic to be forwarded to tailnet.

Allow configuring stateful filter via tailscaled config file.

Deprecate EXPERIMENTAL_TS_CONFIGFILE_PATH env var and introduce a new
TS_EXPERIMENTAL_VERSIONED_CONFIG env var that can be used to provide
containerboot a directory that should contain one or more
tailscaled config files named cap-<tailscaled-cap-version>.hujson.
Containerboot will pick the one with the newest capability version
that is not newer than its current capability version.

Proxies with this change will not work with older Tailscale
Kubernetes operator versions - users must ensure that
the deployed operator is at the same version or newer (up to
4 version skew) than the proxies.

Updates tailscale/tailscale#12061

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
Co-authored-by: Maisem Ali <maisem@tailscale.com>
7 months ago
Maisem Ali 21abb7f402 cmd/tailscale: add missing set flags for linux
We were missing `snat-subnet-routes`, `stateful-filtering`
and `netfilter-mode`. Add those to set too.

Fixes #12061

Signed-off-by: Maisem Ali <maisem@tailscale.com>
7 months ago
Irbe Krumina b5dbf155b1
cmd/k8s-operator: default nameserver image to tailscale/k8s-nameserver:unstable (#11991)
We are now publishing nameserver images to tailscale/k8s-nameserver,
so we can start defaulting the images if users haven't set
them explicitly, same as we already do with proxy images.

The nameserver images are currently only published for unstable
track, so we have to use the static 'unstable' tag.
Once we start publishing to stable, we can make the operator
default to its own tag (because then we'll know that for each
operator tag X there is also a nameserver tag X as we always
cut all images for a given tag.

Updates tailscale/tailscale#10499

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Brad Fitzpatrick e968b0ecd7 cmd/tailscale,controlclient,ipnlocal: fix 'up', deflake tests more
The CLI's "up" is kinda chaotic and LocalBackend.Start is kinda
chaotic and they both need to be redone/deleted (respectively), but
this fixes some buggy behavior meanwhile. We were previously calling
StartLoginInteractive (to start the controlclient's RegisterRequest)
redundantly in some cases, causing test flakes depending on timing and
up's weird state machine.

We only need to call StartLoginInteractive in the client if Start itself
doesn't. But Start doesn't tell us that. So cheat a bit and a put the
information about whether there's a current NodeKey in the ipn.Status.
It used to be accessible over LocalAPI via GetPrefs as a private key but
we removed that for security. But a bool is fine.

So then only call StartLoginInteractive if that bool is false and don't
do it in the WatchIPNBus loop.

Fixes #12028
Updates #12042

Change-Id: I0923c3f704a9d6afd825a858eb9a63ca7c1df294
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Brad Fitzpatrick 727c0d6cfd ipn/ipnserver: close a small race in ipnserver, ~simplify code
There was a small window in ipnserver after we assigned a LocalBackend
to the ipnserver's atomic but before we Start'ed it where our
initalization Start could conflict with API calls from the LocalAPI.

Simplify that a bit and lay out the rules in the docs.

Updates #12028

Change-Id: Ic5f5e4861e26340599184e20e308e709edec68b1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Andrew Lytvynov 471731771c
ipn/ipnlocal: set default NoStatefulFiltering in ipn.NewPrefs (#12031)
This way the default gets populated on first start, when no existing
state exists to migrate. Also fix `ipn.PrefsFromBytes` to preserve empty
fields, rather than layering `NewPrefs` values on top.

Updates https://github.com/tailscale/corp/issues/19623

Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
7 months ago
Paul Scott 78fa698fe6 cmd/tailscale/cli/ffcomplete: remove fullstop from ShortHelp
Updates #cleanup

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Andrew Lytvynov c28f5767bf
various: implement stateful firewalling on Linux (#12025)
Updates https://github.com/tailscale/corp/issues/19623


Change-Id: I7980e1fb736e234e66fa000d488066466c96ec85

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Co-authored-by: Andrew Dunham <andrew@du.nham.ca>
7 months ago
Brad Fitzpatrick f3d2fd22ef cmd/tailscale/cli: don't start WatchIPNBus until after up's initial Start
The CLI "up" command is a historical mess, both on the CLI side and
the LocalBackend side. We're getting closer to cleaning it up, but in
the meantime it was again implicated in flaky tests.

In this case, the background goroutine running WatchIPNBus was very
occasionally running enough to get to its StartLoginInteractive call
before the original goroutine did its Start call. That meant
integration tests were very rarely but sometimes logging in with the
default control plane URL out on the internet
(controlplane.tailscale.com) instead of the localhost control server
for tests.

This also might've affected new Headscale etc users on initial "up".

Fixes #11960
Fixes #11962

Change-Id: I36f8817b69267a99271b5ee78cb7dbf0fcc0bd34
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Nick Khyl caa3d7594f ipn/ipnlocal, net/tsdial: plumb routes into tsdial and use them in UserDial
We'd like to use tsdial.Dialer.UserDial instead of SystemDial for DNS over TCP.
This is primarily necessary to properly dial internal DNS servers accessible
over Tailscale and subnet routes. However, to avoid issues when switching
between Wi-Fi and cellular, we need to ensure that we don't retain connections
to any external addresses on the old interface. Therefore, we need to determine
which dialer to use internally based on the configured routes.

This plumbs routes and localRoutes from router.Config to tsdial.Dialer,
and updates UserDial to use either the peer dialer or the system dialer,
depending on the network address and the configured routes.

Updates tailscale/corp#18725
Fixes #4529

Signed-off-by: Nick Khyl <nickk@tailscale.com>
7 months ago
Brad Fitzpatrick c3c18027c6 all: make more tests pass/skip in airplane mode
Updates tailscale/corp#19786

Change-Id: Iedc6730fe91c627b556bff5325bdbaf7bf79d8e6
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Irbe Krumina 406293682c
cmd/k8s-operator: cleanup runReconciler signature (#11993)
Updates#cleanup

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Brad Fitzpatrick 15fc6cd966 derp/derphttp: fix netcheck HTTPS probes
The netcheck client, when no UDP is available, probes distance using
HTTPS.

Several problems:

* It probes using /derp/latency-check.
* But cmd/derper serves the handler at /derp/probe
* Despite the difference, it work by accident until c8f4dfc8c0
  which made netcheck's probe require a 2xx status code.
* in tests, we only use derphttp.Handler, so the cmd/derper-installed
  mux routes aren't preesnt, so there's no probe. That breaks
  tests in airplane mode. netcheck.Client then reports "unexpected
  HTTP status 426" (Upgrade Required)

This makes derp handle both /derp/probe and /derp/latency-check
equivalently, and in both cmd/derper and derphttp.Handler standalone
modes.

I notice this when wgengine/magicsock TestActiveDiscovery was failing
in airplane mode (no wifi). It still doesn't pass, but it gets
further.

Fixes #11989

Change-Id: I45213d4bd137e0f29aac8bd4a9ac92091065113f
7 months ago
Brad Fitzpatrick 1fe0983f2d cmd/derper,tstest/nettest: skip network-needing test in airplane mode
Not buying wifi on a short flight is a good way to find tests
that require network. Whoops.

Updates #cleanup

Change-Id: Ibe678e9c755d27269ad7206413ffe9971f07d298
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Irbe Krumina cd633a7252
cmd/k8s-operator/deploy,k8s-operator: document that metrics are unstable (#11979)
Updates#11292

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Irbe Krumina 19b31ac9a6
cmd/{k8s-operator,k8s-nameserver},k8s-operator: update nameserver config with records for ingress/egress proxies (#11019)
cmd/k8s-operator: optionally update dnsrecords Configmap with DNS records for proxies.

This commit adds functionality to automatically populate
DNS records for the in-cluster ts.net nameserver
to allow cluster workloads to resolve MagicDNS names
associated with operator's proxies.

The records are created as follows:
* For tailscale Ingress proxies there will be
a record mapping the MagicDNS name of the Ingress
device and each proxy Pod's IP address.
* For cluster egress proxies, configured via
tailscale.com/tailnet-fqdn annotation, there will be
a record for each proxy Pod, mapping
the MagicDNS name of the exposed
tailnet workload to the proxy Pod's IP.

No records will be created for any other proxy types.
Records will only be created if users have configured
the operator to deploy an in-cluster ts.net nameserver
by applying tailscale.com/v1alpha1.DNSConfig.

It is user's responsibility to add the ts.net nameserver
as a stub nameserver for ts.net DNS names.
https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/#configuration-of-stub-domain-and-upstream-nameserver-using-coredns
https://cloud.google.com/kubernetes-engine/docs/how-to/kube-dns#upstream_nameservers

See also https://github.com/tailscale/tailscale/pull/11017

Updates tailscale/tailscale#10499

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Paul Scott 4c08410011 cmd/tailscale/cli: set localClient.UseSocketOnly during flag parsing
This configures localClient correctly during flag parsing, so that the --socket
option is effective when generating tab-completion results. For example, the
following would not connect to the system Tailscale for tab-completion results:

    tailscale --socket=/tmp/tailscaled.socket switch <TAB>

Updates #3793

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Paul Scott ba34943133 cmd/tailscale/cli/ffcomplete: omit and clean completion results
Updates #3793

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Gabe Gorelick de85610be0
cmd/k8s-operator/deploy/chart: allow users to configure additional labels for the operator's Pod via Helm chart values.
cmd/k8s-operator/deploy/chart: allow users to configure additional labels for the operator's Pod via Helm chart values.

Fixes #11947

Signed-off-by: Gabe Gorelick <gabe@hightouch.io>
7 months ago
Irbe Krumina 44aa809cb0
cmd/{k8s-nameserver,k8s-operator},k8s-operator: add a kube nameserver, make operator deploy it (#11919)
* cmd/k8s-nameserver,k8s-operator: add a nameserver that can resolve ts.net DNS names in cluster.

Adds a simple nameserver that can respond to A record queries for ts.net DNS names.
It can respond to queries from in-memory records, populated from a ConfigMap
mounted at /config. It dynamically updates its records as the ConfigMap
contents changes.
It will respond with NXDOMAIN to queries for any other record types
(AAAA to be implemented in the future).
It can respond to queries over UDP or TCP. It runs a miekg/dns
DNS server with a single registered handler for ts.net domain names.
Queries for other domain names will be refused.

The intended use of this is:
1) to allow non-tailnet cluster workloads to talk to HTTPS tailnet
services exposed via Tailscale operator egress over HTTPS
2) to allow non-tailnet cluster workloads to talk to workloads in
the same cluster that have been exposed to tailnet over their
MagicDNS names but on their cluster IPs.

DNSConfig CRD can be used to configure
the operator to deploy kube nameserver (./cmd/k8s-nameserver) to cluster.

Updates tailscale/tailscale#10499

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Irbe Krumina 7d9c3f9897
cmd/k8s-operator/deploy/manifests: check if IPv6 module is loaded before using it (#11867)
Before attempting to enable IPv6 forwarding in the proxy init container
check if the relevant module is found, else the container crashes
on hosts that don't have it.

Updates#11860

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Andrew Lytvynov ce5c80d0fe
clientupdate: exec systemctl instead of using dbus to restart (#11923)
Shell out to "systemctl", which lets us drop an extra dependency.

Updates https://github.com/tailscale/corp/issues/18935

Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
7 months ago
Irbe Krumina 1452faf510
cmd/containerboot,kube,ipn/store/kubestore: allow interactive login on kube, check Secret create perms, allow empty state Secret (#11326)
cmd/containerboot,kube,ipn/store/kubestore: allow interactive login and empty state Secrets, check perms

* Allow users to pre-create empty state Secrets

* Add a fake internal kube client, test functionality that has dependencies on kube client operations.

* Fix an issue where interactive login was not allowed in an edge case where state Secret does not exist

* Make the CheckSecretPermissions method report whether we have permissions to create/patch a Secret if it's determined that these operations will be needed

Updates tailscale/tailscale#11170

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Brad Fitzpatrick b9adbe2002 net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon
In prep for most of the package funcs in net/interfaces to become
methods in a long-lived netmon.Monitor that can cache things.  (Many
of the funcs are very heavy to call regularly, whereas the long-lived
netmon.Monitor can subscribe to things from the OS and remember
answers to questions it's asked regularly later)

Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299

Change-Id: Ie4e8dedb70136af2d611b990b865a822cd1797e5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Brad Fitzpatrick 6b95219e3a net/netmon, add: add netmon.State type alias of interfaces.State
... in prep for merging the net/interfaces package into net/netmon.

This is a no-op change that updates a bunch of the API signatures ahead of
a future change to actually move things (and remove the type alias)

Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299

Change-Id: I477613388f09389214db0d77ccf24a65bff2199c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Irbe Krumina 45f0721530
cmd/containerboot: wait on tailscaled process only (#11897)
Modifies containerboot to wait on tailscaled process
only, not on any child process of containerboot.
Waiting on any subprocess was racing with Go's
exec.Cmd.Run, used to run iptables commands and
that starts its own subprocesses and waits on them.

Containerboot itself does not run anything else
except for tailscaled, so there shouldn't be a need
to wait on anything else.

Updates tailscale/tailscale#11593

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Brad Fitzpatrick 3672f29a4e net/netns, net/dns/resolver, etc: make netmon required in most places
The goal is to move more network state accessors to netmon.Monitor
where they can be cheaper/cached. But first (this change and others)
we need to make sure the one netmon.Monitor is plumbed everywhere.

Some notable bits:

* tsdial.NewDialer is added, taking a now-required netmon

* because a tsdial.Dialer always has a netmon, anything taking both
  a Dialer and a NetMon is now redundant; take only the Dialer and
  get the NetMon from that if/when needed.

* netmon.NewStatic is added, primarily for tests

Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299

Change-Id: I877f9cb87618c4eb037cee098241d18da9c01691
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Brad Fitzpatrick 7a62dddeac net/netcheck, wgengine/magicsock: make netmon.Monitor required
This has been a TODO for ages. Time to do it.

The goal is to move more network state accessors to netmon.Monitor
where they can be cheaper/cached.

Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299

Change-Id: I60fc6508cd2d8d079260bda371fc08b6318bcaf1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Brad Fitzpatrick 745931415c health, all: remove health.Global, finish plumbing health.Tracker
Updates #11874
Updates #4136

Change-Id: I414470f71d90be9889d44c3afd53956d9f26cd61
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Brad Fitzpatrick 6d69fc137f ipn/{ipnlocal,localapi},wgengine{,/magicsock}: plumb health.Tracker
Down to 25 health.Global users. After this remains controlclient &
net/dns & wgengine/router.

Updates #11874
Updates #4136

Change-Id: I6dd1856e3d9bf523bdd44b60fb3b8f7501d5dc0d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Irbe Krumina df8f40905b
cmd/k8s-operator,k8s-operator: optionally serve tailscaled metrics on Pod IP (#11699)
Adds a new .spec.metrics field to ProxyClass to allow users to optionally serve
client metrics (tailscaled --debug) on <Pod-IP>:9001.
Metrics cannot currently be enabled for proxies that egress traffic to tailnet
and for Ingress proxies with tailscale.com/experimental-forward-cluster-traffic-via-ingress annotation
(because they currently forward all cluster traffic to their respective backends).

The assumption is that users will want to have these metrics enabled
continuously to be able to monitor proxy behaviour (as opposed to enabling
them temporarily for debugging). Hence we expose them on Pod IP to make it
easier to consume them i.e via Prometheus PodMonitor.

Updates tailscale/tailscale#11292

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Brad Fitzpatrick 723c775dbb tsd, ipnlocal, etc: add tsd.System.HealthTracker, start some plumbing
This adds a health.Tracker to tsd.System, accessible via
a new tsd.System.HealthTracker method.

In the future, that new method will return a tsd.System-specific
HealthTracker, so multiple tsnet.Servers in the same process are
isolated. For now, though, it just always returns the temporary
health.Global value. That permits incremental plumbing over a number
of changes. When the second to last health.Global reference is gone,
then the tsd.System.HealthTracker implementation can return a private
Tracker.

The primary plumbing this does is adding it to LocalBackend and its
dozen and change health calls. A few misc other callers are also
plumbed. Subsequent changes will flesh out other parts of the tree
(magicsock, controlclient, etc).

Updates #11874
Updates #4136

Change-Id: Id51e73cfc8a39110425b6dc19d18b3975eac75ce
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Lee Briggs 14ac41febc
cmd/k8s-operator,k8s-operator: proxyclass affinity (#11862)
add ability to set affinity rules to proxyclass

Updates#11861

Signed-off-by: Lee Briggs <lee@leebriggs.co.uk>
7 months ago
Irbe Krumina 3af0f526b8
cmd{containerboot,k8s-operator},util/linuxfw: support ExternalName Services (#11802)
* cmd/containerboot,util/linuxfw: support proxy backends specified by DNS name

Adds support for optionally configuring containerboot to proxy
traffic to backends configured by passing TS_EXPERIMENTAL_DEST_DNS_NAME env var
to containerboot.
Containerboot will periodically (every 10 minutes) attempt to resolve
the DNS name and ensure that all traffic sent to the node's
tailnet IP gets forwarded to the resolved backend IP addresses.

Currently:
- if the firewall mode is iptables, traffic will be load balanced
accross the backend IP addresses using round robin. There are
no health checks for whether the IPs are reachable.
- if the firewall mode is nftables traffic will only be forwarded
to the first IP address in the list. This is to be improved.

* cmd/k8s-operator: support ExternalName Services

 Adds support for exposing endpoints, accessible from within
a cluster to the tailnet via DNS names using ExternalName Services.
This can be done by annotating the ExternalName Service with
tailscale.com/expose: "true" annotation.
The operator will deploy a proxy configured to route tailnet
traffic to the backend IPs that service.spec.externalName
resolves to. The backend IPs must be reachable from the operator's
namespace.

Updates tailscale/tailscale#10606

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Joe Tsai 63b3c82587
ipn/local: log OS-specific diagnostic information as JSON (#11700)
There is an undocumented 16KiB limit for text log messages.
However, the limit for JSON messages is 256KiB.
Even worse, logging JSON as text results in significant overhead
since each double quote needs to be escaped.

Instead, use logger.Logf.JSON to explicitly log the info as JSON.

We also modify osdiag to return the information as structured data
rather than implicitly have the package log on our behalf.
This gives more control to the caller on how to log.

Updates #7802

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
7 months ago
Sonia Appasamy 0a84215036 release/dist/qnap: add qnap target builder
Creates new QNAP builder target, which builds go binaries then uses
docker to build into QNAP packages. Much of the docker/script code
here is pulled over from https://github.com/tailscale/tailscale-qpkg,
with adaptation into our builder structures.

The qnap/Tailscale folder contains static resources needed to build
Tailscale qpkg packages, and is an exact copy of the existing folder
in the tailscale-qpkg repo.

Builds can be run with:
```
sudo ./tool/go run ./cmd/dist build qnap
```

Updates tailscale/tailscale-qpkg#135

Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
7 months ago
Irbe Krumina bbe194c80d
cmd/k8s-operator: correctly determine cluster domain (#11512)
Kubernetes cluster domain defaults to 'cluster.local', but can also be customized.
We need to determine cluster domain to set up in-cluster forwarding to our egress proxies.
This was previously hardcoded to 'cluster.local', so was the egress proxies were not usable in clusters with custom domains.
This PR ensures that we attempt to determine the cluster domain by parsing /etc/resolv.conf.
In case the cluster domain cannot be determined from /etc/resolv.conf, we fall back to 'cluster.local'.

Updates tailscale/tailscale#10399,tailscale/tailscale#11445

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Aaron Klotz 7132b782d4 hostinfo: use Distro field for distinguishing Windows Server builds
Some editions of Windows server share the same build number as their
client counterpart; we must use an additional field found in the OS
version information to distinguish between them.

Even though "Distro" has Linux connotations, it is the most appropriate
hostinfo field. What is Windows Server if not an alternate distribution
of Windows? This PR populates Distro with "Server" when applicable.

Fixes #11785

Signed-off-by: Aaron Klotz <aaron@tailscale.com>
7 months ago
Percy Wegmann 02c6af2a69 cmd/tailscale: clarify Taildrive grants in help text
Fixes #cleanup

Signed-off-by: Percy Wegmann <percy@tailscale.com>
7 months ago
Paul Scott 82394debb7 cmd/tailscale: add shell tab-completion
The approach is lifted from cobra: `tailscale completion bash` emits a bash
script for configuring the shell's autocomplete:

    . <( tailscale completion bash )

so that typing:

    tailscale st<TAB>

invokes:

    tailscale completion __complete -- st

RELNOTE=tailscale CLI now supports shell tab-completion

Fixes #3793

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
dependabot[bot] 449be38e03
build(deps): bump google.golang.org/protobuf from 1.32.0 to 1.33.0 (#11410)
* build(deps): bump google.golang.org/protobuf from 1.32.0 to 1.33.0

Bumps google.golang.org/protobuf from 1.32.0 to 1.33.0.

---
updated-dependencies:
- dependency-name: google.golang.org/protobuf
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

* cmd/{derper,stund}: update depaware.txt

Signed-off-by: Andrew Lytvynov <awly@tailscale.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Andrew Lytvynov <awly@tailscale.com>
7 months ago
Paul Scott 454a03a766 cmd/tailscale/cli: prepend "tailscale" to usage errors
Updates #11626

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Paul Scott d07ede461a cmd/tailscale/cli: fix "subcommand required" errors when typod
Fixes #11672

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Paul Scott 3ff3445e9d cmd/tailscale/cli: improve ShortHelp/ShortUsage unit test, fix new errors
Updates #11364

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Paul Scott eb34b8a173 cmd/tailscale/cli: remove explicit usageFunc - its default
Updates #cleanup

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Paul Scott a50e4e604e cmd/tailscale/cli: remove duplicate "tailscale " in drive subcmd usage
Updates #cleanup

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Paul Scott 62d4be873d cmd/tailscale/cli: fix drive --help usage identation
Updates #cleanup

Signed-off-by: Paul Scott <paul@tailscale.com>
7 months ago
Brad Fitzpatrick 7c1d6e35a5 all: use Go 1.22 range-over-int
Updates #11058

Change-Id: I35e7ef9b90e83cac04ca93fd964ad00ed5b48430
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Brad Fitzpatrick 0fba9e7570 cmd/tailscale/cli: prevent concurrent Start calls in 'up'
Seems to deflake tstest/integration tests. I can't reproduce it
anymore on one of my VMs that was consistently flaking after a dozen
runs before. Now I can run hundreds of times.

Updates #11649
Fixes #7036

Change-Id: I2f7d4ae97500d507bdd78af9e92cd1242e8e44b8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Irbe Krumina 26f9bbc02b
cmd/k8s-operator,k8s-operator: document tailscale.com Custom Resource Definitions better. (#11665)
Updates tailscale/tailscale#10880

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Brad Fitzpatrick 7ec0dc3834 ipn/ipnlocal: make StartLoginInteractive take (yet unused) context
In prep for future fix to undermentioned issue.

Updates tailscale/tailscale#7036

Change-Id: Ide114db917dcba43719482ffded6a9a54630d99e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
7 months ago
Claire Wang 9171b217ba
cmd/tailscale, ipn/ipnlocal: add suggest exit node CLI option (#11407)
Updates tailscale/corp#17516

Signed-off-by: Claire Wang <claire@tailscale.com>
7 months ago
Irbe Krumina 38fb23f120
cmd/k8s-operator,k8s-operator: allow users to configure proxy env vars via ProxyClass (#11743)
Adds new ProxyClass.spec.statefulSet.pod.{tailscaleContainer,tailscaleInitContainer}.Env field
that allow users to provide key, value pairs that will be set as env vars for the respective containers.
Allow overriding all containerboot env vars,
but warn that this is not supported and might break (in docs + a warning when validating ProxyClass).

Updates tailscale/tailscale#10709

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Brad Fitzpatrick a1abd12f35 cmd/tailscaled, net/tstun: build for aix/ppc64
At least in userspace-networking mode.

Fixes #11361

Change-Id: I78d33f0f7e05fe9e9ee95b97c99b593f8fe498f2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago
Joe Tsai 7a77a2edf1
logtail: optimize JSON processing (#11671)
Changes made:

* Avoid "encoding/json" for JSON processing, and instead use
"github.com/go-json-experiment/json/jsontext".
Use jsontext.Value.IsValid for validation, which is much faster.
Use jsontext.AppendQuote instead of our own JSON escaping.

* In drainPending, use a different maxLen depending on lowMem.
In lowMem mode, it is better to perform multiple uploads
than it is to construct a large body that OOMs the process.

* In drainPending, if an error is encountered draining,
construct an error message in the logtail JSON format
rather than something that is invalid JSON.

* In appendTextOrJSONLocked, use jsontext.Decoder to check
whether the input is a valid JSON object. This is faster than
the previous approach of unmarshaling into map[string]any and
then re-marshaling that data structure.
This is especially beneficial for network flow logging,
which produces relatively large JSON objects.

* In appendTextOrJSONLocked, enforce maxSize on the input.
If too large, then we may end up in a situation where the logs
can never be uploaded because it exceeds the maximum body size
that the Tailscale logs service accepts.

* Use "tailscale.com/util/truncate" to properly truncate a string
on valid UTF-8 boundaries.

* In general, remove unnecessary spaces in JSON output.

Performance:

    name       old time/op    new time/op    delta
    WriteText     776ns ± 2%     596ns ± 1%   -23.24%  (p=0.000 n=10+10)
    WriteJSON     110µs ± 0%       9µs ± 0%   -91.77%  (p=0.000 n=8+8)

    name       old alloc/op   new alloc/op   delta
    WriteText      448B ± 0%        0B       -100.00%  (p=0.000 n=10+10)
    WriteJSON    37.9kB ± 0%     0.0kB ± 0%   -99.87%  (p=0.000 n=10+10)

    name       old allocs/op  new allocs/op  delta
    WriteText      1.00 ± 0%      0.00       -100.00%  (p=0.000 n=10+10)
    WriteJSON     1.08k ± 0%     0.00k ± 0%   -99.91%  (p=0.000 n=10+10)

For text payloads, this is 1.30x faster.
For JSON payloads, this is 12.2x faster.

Updates #cleanup
Updates tailscale/corp#18514

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
8 months ago
James Tucker 8fa3026614 tsweb: switch to fastuuid for request ID generation
Request ID generation appears prominently in some services cumulative
allocation rate, and while this does not eradicate this issue (the API
still makes UUID objects), it does improve the overhead of this API and
reduce the amount of garbage that it produces.

Updates tailscale/corp#18266
Updates tailscale/corp#19054

Signed-off-by: James Tucker <james@tailscale.com>
8 months ago
James Tucker db760d0bac cmd/tailscaled: move cleanup to an implicit action during startup
This removes a potentially increased boot delay for certain boot
topologies where they block on ExecStartPre that may have socket
activation dependencies on other system services (such as
systemd-resolved and NetworkManager).

Also rename cleanup to clean up in affected/immediately nearby places
per code review commentary.

Fixes #11599

Signed-off-by: James Tucker <james@tailscale.com>
8 months ago
Paul Scott da4e92bf01 cmd/tailscale/cli: prefix all --help usages with "tailscale ...", some tidying
Also capitalises the start of all ShortHelp, allows subcommands to be hidden
with a "HIDDEN: " prefix in their ShortHelp, and adds a TS_DUMP_HELP envknob
to look at all --help messages together.

Fixes #11664

Signed-off-by: Paul Scott <paul@tailscale.com>
8 months ago
Percy Wegmann 9da135dd64 cmd/tailscale/cli: moved share.go to drive.go
Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
8 months ago
Percy Wegmann 1e0ebc6c6d cmd/tailscale/cli: rename share command to drive
Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
8 months ago
Irbe Krumina 231e44e742
Revert "cmd/{k8s-nameserver,k8s-operator},k8s-operator: add a kube nameserver, make operator deploy it (#11017)" (#11669)
Temporarily reverting this PR to avoid releasing
half finished featue.

This reverts commit 9e2f58f846.

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
8 months ago
Brad Fitzpatrick e6983baa73
cmd/tailscale/cli: fix macOS crash reading envknob in init (#11667)
And add a test.

Regression from a5e1f7d703

Fixes tailscale/corp#19036

Change-Id: If90984049af0a4820c96e1f77ddf2fce8cb3043f

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago
Chloé Vulquin 0f3a292ebd
cli/configure: respect $KUBECONFIG (#11604)
cmd/tailscale/cli: respect $KUBECONFIG

* `$KUBECONFIG` is a `$PATH`-like: it defines a *list*.
`tailscale config kubeconfig` works like the rest of the
ecosystem so that if $KUBECONFIG is set it will write to the first existant file in the list, if none exist then
the final entry in the list.
* if `$KUBECONFIG` is an empty string, the old logic takes over.

Notes:

* The logic for file detection is inlined based on what `kind` does.
Technically it's a race condition, since the file could be removed/added
in between the processing steps, but the fallout shouldn't be too bad.
https://github.com/kubernetes-sigs/kind/blob/v0.23.0-alpha/pkg/cluster/internal/kubeconfig/internal/kubeconfig/paths.go

* The sandboxed (App Store) variant relies on a specific temporary
entitlement to access the ~/.kube/config file.
The entitlement is only granted to specific files, and so is not
applicable to paths supplied by the user at runtime.
While there may be other ways to achieve this access to arbitrary
kubeconfig files, it's out of scope for now.

Updates #11645

Signed-off-by: Chloé Vulquin <code@toast.bunkerlabs.net>
8 months ago
Brad Fitzpatrick c71e8db058 cmd/tailscale/cli: stop spamming os.Stdout/os.Stderr in tests
After:

    bradfitz@book1pro tailscale.com % ./tool/go test -c ./cmd/tailscale/cli
    bradfitz@book1pro tailscale.com % ./cli.test
    bradfitz@book1pro tailscale.com %

Before:

    bradfitz@book1pro tailscale.com % ./tool/go test -c ./cmd/tailscale/cli
    bradfitz@book1pro tailscale.com % ./cli.test

    Warning: funnel=on for foo.test.ts.net:443, but no serve config
             run: `tailscale serve --help` to see how to configure handlers

    Warning: funnel=on for foo.test.ts.net:443, but no serve config
             run: `tailscale serve --help` to see how to configure handlers
    USAGE
      funnel <serve-port> {on|off}
      funnel status [--json]

    Funnel allows you to publish a 'tailscale serve'
    server publicly, open to the entire internet.

    Turning off Funnel only turns off serving to the internet.
    It does not affect serving to your tailnet.

    SUBCOMMANDS
      status  show current serve/funnel status
    error: path must be absolute

    error: invalid TCP source "localhost:5432": missing port in address

    error: invalid TCP source "tcp://somehost:5432"
    must be one of: localhost or 127.0.0.1

    tcp://somehost:5432error: invalid TCP source "tcp://somehost:0"
    must be one of: localhost or 127.0.0.1

    tcp://somehost:0error: invalid TCP source "tcp://somehost:65536"
    must be one of: localhost or 127.0.0.1

    tcp://somehost:65536error: path must be absolute

    error: cannot serve web; already serving TCP

    You don't have permission to enable this feature.

This also moves the color handling up to a generic spot so it's
not just one subcommand doing it itself. See
https://github.com/tailscale/tailscale/issues/11626#issuecomment-2041795129

Fixes #11643
Updates #11626

Change-Id: I3a49e659dcbce491f4a2cb784be20bab53f72303
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago
Brad Fitzpatrick b0fbd85592 net/tsdial: partially fix "tailscale nc" (UserDial) on macOS
At least in the case of dialing a Tailscale IP.

Updates #4529

Change-Id: I9fd667d088a14aec4a56e23aabc2b1ffddafa3fe
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago