Commit Graph

1731 Commits (170c618483e0166da56692b4c0fdefa14b2ce746)

Author SHA1 Message Date
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
Brad Fitzpatrick a5e1f7d703 ipn/{ipnlocal,localapi}: add API to toggle use of exit node
This is primarily for GUIs, so they don't need to remember the most
recently used exit node themselves.

This adds some CLI commands, but they're disabled and behind the WIP
envknob, as we need to consider naming (on/off is ambiguous with
running an exit node, etc) as well as automatic exit node selection in
the future. For now the CLI commands are effectively developer debug
things to test the LocalAPI.

Updates tailscale/corp#18724

Change-Id: I9a32b00e3ffbf5b29bfdcad996a4296b5e37be7e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago
Maisem Ali 3f4c5daa15 wgengine/netstack: remove SubnetRouterWrapper
It was used when we only supported subnet routers on linux
and would nil out the SubnetRoutes slice as no other router
worked with it, but now we support subnet routers on ~all platforms.

The field it was setting to nil is now only used for network logging
and nowhere else, so keep the field but drop the SubnetRouterWrapper
as it's not useful.

Updates #cleanup

Change-Id: Id03f9b6ec33e47ad643e7b66e07911945f25db79
Signed-off-by: Maisem Ali <maisem@tailscale.com>
8 months ago
Brad Fitzpatrick ac2522092d cmd/tailscale/cli: make exit-node list not random
The output was changing randomly per run, due to range over a map.

Then some misc style tweaks I noticed while debugging.

Fixes #11629

Change-Id: I67aef0e68566994e5744d4828002f6eb70810ee1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago
Will Morrison 306bacc669 cmd/tailscale/cli: Add CLI command to update certs on Synology devices.
Fixes #4674

Signed-off-by: Will Morrison <william.barr.morrison@gmail.com>
8 months ago
Charlotte Brandhorst-Satzkorn 98cf71cd73
tailscale: switch tailfs to drive syntax for api and logs (#11625)
This change switches the api to /drive, rather than the previous /tailfs
as well as updates the log lines to reflect the new value. It also
cleans up some existing tailfs references.

Updates tailscale/corp#16827

Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>
8 months ago
Charlotte Brandhorst-Satzkorn 93618a3518
tailscale: update tailfs functions and vars to use drive naming (#11597)
This change updates all tailfs functions and the majority of the tailfs
variables to use the new drive naming.

Updates tailscale/corp#16827

Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>
8 months ago
Charlotte Brandhorst-Satzkorn 14683371ee
tailscale: update tailfs file and package names (#11590)
This change updates the tailfs file and package names to their new
naming convention.

Updates #tailscale/corp#16827

Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>
8 months ago
Brad Fitzpatrick 1c259100b0 cmd/{derper,derpprobe}: add --version flag
Fixes #11582

Change-Id: If99fc1ab6b89d624fbb07bd104dd882d2c7b50b4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago
Brad Fitzpatrick ec87e219ae logtail: delete unused code from old way to configure zstd
Updates #cleanup

Change-Id: I666ecf08ea67e461adf2a3f4daa9d1753b2dc1e4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago
Irbe Krumina 9b5176c4d9
cmd/k8s-operator: fix failing tests (#11541)
Updates#cleanup

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
8 months ago
Irbe Krumina 9e2f58f846
cmd/{k8s-nameserver,k8s-operator},k8s-operator: add a kube nameserver, make operator deploy it (#11017)
* 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.

Updates tailscale/tailscale#10499

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

* cmd/k8s-operator/deploy/crds,k8s-operator: add DNSConfig CustomResource Definition

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

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

* cmd/k8s-operator,k8s-operator: optionally reconcile nameserver resources

Adds a new reconciler that reconciles DNSConfig resources.
If a DNSConfig is deployed to cluster,
the reconciler creates kube nameserver resources.
This reconciler is only responsible for creating
nameserver resources and not for populating nameserver's records.

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

* cmd/{k8s-operator,k8s-nameserver}: generate DNSConfig CRD for charts, append to static manifests

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

---------

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
8 months ago
Andrea Gottardo 008676f76e
cmd/serve: update warning for sandboxed macOS builds (#11530) 8 months ago
Percy Wegmann 66e4d843c1 ipn/localapi: add support for multipart POST to file-put
This allows sending multiple files via Taildrop in one request.
Progress is tracked via ipn.Notify.

Updates tailscale/corp#18202

Signed-off-by: Percy Wegmann <percy@tailscale.com>
8 months ago
Andrew Lytvynov 5d41259a63
cmd/tailscale/cli: remove Beta tag from tailscale update (#11529)
Updates #cleanup

Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
8 months ago
Irbe Krumina 4cbef20569
cmd/k8s-operator: redact auth key from debug logs (#11523)
Updates#cleanup

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
8 months ago
Chris Milson-Tokunaga b6dfd7443a
Change type of installCRDs (#11478)
Including the double quotes (`"`) around the value made it appear like the helm chart should expect a string value for `installCRDs`.

Signed-off-by: Chris Milson-Tokunaga <chris.w.milson@gmail.com>
8 months ago
Percy Wegmann 8b8b315258 net/tstun: use gaissmai/bart instead of tempfork/device
This implementation uses less memory than tempfork/device,
which helps avoid OOM conditions in the iOS VPN extension when
switching to a Tailnet with ExitNode routing enabled.

Updates tailscale/corp#18514

Signed-off-by: Percy Wegmann <percy@tailscale.com>
8 months ago
Brad Fitzpatrick 7b34154df2 all: deprecate Node.Capabilities (more), remove PeerChange.Capabilities [capver 89]
First we had Capabilities []string. Then
https://tailscale.com/blog/acl-grants (#4217) brought CapMap, a
superset of Capabilities. Except we never really finished the
transition inside the codebase to go all-in on CapMap. This does so.

Notably, this coverts Capabilities on the wire early to CapMap
internally so the code can only deal in CapMap, even against an old
control server.

In the process, this removes PeerChange.Capabilities support, which no
known control plane sent anyway. They can and should use
PeerChange.CapMap instead.

Updates #11508
Updates #4217

Change-Id: I872074e226b873f9a578d9603897b831d50b25d9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
8 months ago
Joe Tsai 85febda86d
all: use zstdframe where sensible (#11491)
Use the zstdframe package where sensible instead of plumbing
around our own zstd.Encoder just for stateless operations.

This causes logtail to have a dependency on zstd,
but that's arguably okay since zstd support is implicit
to the protocol between a client and the logging service.
Also, virtually every caller to logger.NewLogger was
manually setting up a zstd.Encoder anyways,
meaning that zstd was functionally always a dependency.

Updates #cleanup
Updates tailscale/corp#18514

Signed-off-by: Joe Tsai <joetsai@digital-static.net>
8 months ago
Irbe Krumina b0c3e6f6c5
cmd/k8s-operator,ipn/conf.go: fix --accept-routes for proxies (#11453)
Fix a bug where all proxies got configured with --accept-routes set to true.
The bug was introduced in https://github.com/tailscale/tailscale/pull/11238.

Updates#cleanup

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
9 months ago
Mario Minardi d2ccfa4edd
cmd/tailscale,ipn/ipnlocal: enable web client over quad 100 by default (#11419)
Enable the web client over 100.100.100.100 by default. Accepting traffic
from [tailnet IP]:5252 still requires setting the `webclient` user pref.

Updates https://github.com/tailscale/tailscale/issues/10261

Signed-off-by: Mario Minardi <mario@tailscale.com>
9 months ago
Andrea Gottardo 08ebac9acb
version,cli,safesocket: detect non-sandboxed macOS GUI (#11369)
Updates ENG-2848

We can safely disable the App Sandbox for our macsys GUI, allowing us to use `tailscale ssh` and do a few other things that we've wanted to do for a while. This PR:

- allows Tailscale SSH to be used from the macsys GUI binary when called from a CLI
- tweaks the detection of client variants in prop.go, with new functions `IsMacSys()`, `IsMacSysApp()` and `IsMacAppSandboxEnabled()`

Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
9 months ago
Irbe Krumina ea55f96310
cmd/tailscale/cli: fix configuring partially empty kubeconfig (#11417)
When a user deletes the last cluster/user/context from their
kubeconfig via 'kubectl delete-[cluster|user|context] command,
kubectx sets the relevant field in kubeconfig to 'null'.
This was breaking our conversion logic that was assuming that the field
is either non-existant or is an array.

Updates tailscale/corp#18320

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
9 months ago
Anton Tolchanov f12d2557f9 prober: add a DERP bandwidth probe
Updates tailscale/corp#17912

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
9 months ago
Percy Wegmann e496451928 ipn,cmd/tailscale,client/tailscale: add support for renaming TailFS shares
- Updates API to support renaming TailFS shares.
- Adds a CLI rename subcommand for renaming a share.
- Renames the CLI subcommand 'add' to 'set' to make it clear that
  this is an add or update.
- Adds a unit test for TailFS in ipnlocal

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago
Percy Wegmann 6c160e6321 ipn,tailfs: tie TailFS share configuration to user profile
Previously, the configuration of which folders to share persisted across
profile changes. Now, it is tied to the user's profile.

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago
Percy Wegmann 16ae0f65c0 cmd/viewer: import views when generating byteSliceField
Updates #cleanup

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago
Andrew Dunham 34176432d6 cmd/derper, types/logger: move log filter to shared package
So we can use it in trunkd to quiet down the logs there.

Updates #5563

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ie3177dc33f5ad103db832aab5a3e0e4f128f973f
9 months ago
Sonia Appasamy c58c59ee54 {ipn,cmd/tailscale/cli}: move ServeConfig mutation logic to ipn/serve
Moving logic that manipulates a ServeConfig into recievers on the
ServeConfig in the ipn package. This is setup work to allow the
web client and cli to both utilize these shared functions to edit
the serve config.

Any logic specific to flag parsing or validation is left untouched
in the cli command. The web client will similarly manage its
validation of user's requested changes. If validation logic becomes
similar-enough, we can make a serve util for shared functionality,
which likely does not make sense in ipn.

Updates #10261

Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
9 months ago
Sonia Appasamy 65c3c690cf {ipn/serve,cmd/tailscale/cli}: move some shared funcs to ipn
In preparation for changes to allow configuration of serve/funnel
from the web client, this commit moves some functionality that will
be shared between the CLI and web client to the ipn package's
serve.go file, where some other util funcs are already defined.

Updates #10261

Signed-off-by: Sonia Appasamy <sonia@tailscale.com>
9 months ago
Percy Wegmann e324a5660f ipn: include full tailfs shares in ipn notifications
This allows the Mac application to regain access to restricted
folders after restarts.

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago
Brad Fitzpatrick 69f4b4595a wgengine{,/wgint}: add wgint.Peer wrapper type, add to wgengine.Engine
This adds a method to wgengine.Engine and plumbed down into magicsock
to add a way to get a type-safe Tailscale-safe wrapper around a
wireguard-go device.Peer that only exposes methods that are safe for
Tailscale to use internally.

It also removes HandshakeAttempts from PeerStatusLite that was just
added as it wasn't needed yet and is now accessible ala cart as needed
from the Peer type accessor.

None of this is used yet.

Updates #7617

Change-Id: I07be0c4e6679883e6eeddf8dbed7394c9e79c5f4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
9 months ago
Irbe Krumina 95dcc1745b
cmd/k8s-operator: reconcile tailscale Ingresses when their backend Services change. (#11255)
This is so that if a backend Service gets created after the Ingress, it gets picked up by the operator.

Updates tailscale/tailscale#11251

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
Co-authored-by: Anton Tolchanov <1687799+knyar@users.noreply.github.com>
9 months ago
Irbe Krumina 303125d96d
cmd/k8s-operator: configure all proxies with declarative config (#11238)
Containerboot container created for operator's ingress and egress proxies
are now always configured by passing a configfile to tailscaled
(tailscaled --config <configfile-path>.
It does not run 'tailscale set' or 'tailscale up'.
Upgrading existing setups to this version as well as
downgrading existing setups at this version works.

Updates tailscale/tailscale#10869

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
9 months ago
Irbe Krumina 45d27fafd6
cmd/k8s-operator,k8s-operator,go.{mod,sum},tstest/tools: add Tailscale Kubernetes operator API docs (#11246)
Add logic to autogenerate CRD docs.
.github/workflows/kubemanifests.yaml CI workflow will fail if the doc is out of date with regard to the current CRDs.
Docs can be refreshed by running make kube-generate-all.

Updates tailscale/tailscale#11023

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
9 months ago
Anton Tolchanov 8cc5c51888 health: warn about reverse path filtering and exit nodes
When reverse path filtering is in strict mode on Linux, using an exit
node blocks all network connectivity. This change adds a warning about
this to `tailscale status` and the logs.

Example in `tailscale status`:

```
- not connected to home DERP region 22
- The following issues on your machine will likely make usage of exit nodes impossible: [interface "eth0" has strict reverse-path filtering enabled], please set rp_filter=2 instead of rp_filter=1; see https://github.com/tailscale/tailscale/issues/3310
```

Example in the logs:
```
2024/02/21 21:17:07 health("overall"): error: multiple errors:
	not in map poll
	The following issues on your machine will likely make usage of exit nodes impossible: [interface "eth0" has strict reverse-path filtering enabled], please set rp_filter=2 instead of rp_filter=1; see https://github.com/tailscale/tailscale/issues/3310
```

Updates #3310

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
9 months ago
Nick Khyl 7ef1fb113d cmd/tailscaled, ipn/ipnlocal, wgengine: shutdown tailscaled if wgdevice is closed
Tailscaled becomes inoperative if the Tailscale Tunnel wintun adapter is abruptly removed.
wireguard-go closes the device in case of a read error, but tailscaled keeps running.
This adds detection of a closed WireGuard device, triggering a graceful shutdown of tailscaled.
It is then restarted by the tailscaled watchdog service process.

Fixes #11222

Signed-off-by: Nick Khyl <nickk@tailscale.com>
9 months ago
Percy Wegmann 50fb8b9123 tailfs: replace webdavfs with reverse proxies
Instead of modeling remote WebDAV servers as actual
webdav.FS instances, we now just proxy traffic to them.
This not only simplifies the code, but it also allows
WebDAV locking to work correctly by making sure locks are
handled by the servers that need to (i.e. the ones actually
serving the files).

Updates tailscale/corp#16827

Signed-off-by: Percy Wegmann <percy@tailscale.com>
9 months ago