Commit Graph

39 Commits (a6cc2fdc3e2645a6931c128f8e8f716680e968b0)

Author SHA1 Message Date
Irbe Krumina a6cc2fdc3e
cmd/{containerboot,k8s-operator/deploy/manifests}: optionally allow proxying cluster traffic to a cluster target via ingress proxy (#11036)
* cmd/containerboot,cmd/k8s-operator/deploy/manifests: optionally forward cluster traffic via ingress proxy.

If a tailscale Ingress has tailscale.com/experimental-forward-cluster-traffic-via-ingress annotation, configure the associated ingress proxy to have its tailscale serve proxy to listen on Pod's IP address. This ensures that cluster traffic too can be forwarded via this proxy to the ingress backend(s).

In containerboot, if EXPERIMENTAL_PROXY_CLUSTER_TRAFFIC_VIA_INGRESS is set to true
and the node is Kubernetes operator ingress proxy configured via Ingress,
make sure that traffic from within the cluster can be proxied to the ingress target.

Updates tailscale/tailscale#10499

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
4 months ago
Irbe Krumina 133699284e
cmd/containerboot: add EXPERIMENTAL_TS_CONFIGFILE_PATH env var to allow passing tailscaled config in a file (#10759)
* cmd/containerboot: optionally configure tailscaled with a configfile.

If EXPERIMENTAL_TS_CONFIGFILE_PATH env var is set,
only run tailscaled with the provided config file.
Do not run 'tailscale up' or 'tailscale set'.

* cmd/containerboot: store containerboot accept_dns val in bool pointer

So that we can distinguish between the value being set to
false explicitly bs being unset.

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
5 months ago
Irbe Krumina 3a9450bc06
cmd/containerboot: don't parse empty subnet routes (#10738)
Updates#cleanup

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
5 months ago
Irbe Krumina 5a2eb26db3
cmd/containerboot: ensure that subnet routes can be unset. (#10734)
A Tailnet node can be told to stop advertise subnets by passing
an empty string to --advertise-routes flag.
Respect an explicitly passed empty value to TS_ROUTES env var
so that users have a way to stop containerboot acting as a subnet
router without recreating it.
Distinguish between TS_ROUTES being unset and empty.

Updates tailscale/tailscale#10708

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
5 months ago
Maisem Ali 7bdea283bd cmd/containerboot: symlink TS_SOCKET to socket expected by CLI
`tailscaled` and `tailscale` expect the socket to be at
`/var/run/tailscale/tailscaled.sock`, however containerboot
would set up the socket at `/tmp/tailscaled.sock`. This leads to a
poor UX when users try to use any `tailscale` command as they
have to prefix everything with `--socket /tmp/tailscaled.sock`.

To improve the UX, this adds a symlink to
`/var/run/tailscale/tailscaled.sock` to point to `/tmp/tailscaled.sock`.

This approach has two benefits, 1 users are able to continue to use
existing scripts without this being a breaking change. 2. users are
able to use the `tailscale` CLI without having to add the `--socket` flag.

Fixes tailscale/corp#15902
Fixes #6849
Fixes #10027

Signed-off-by: Maisem Ali <maisem@tailscale.com>
6 months ago
Naman Sood 0a59754eda linuxfw,wgengine/route,ipn: add c2n and nodeattrs to control linux netfilter
Updates tailscale/corp#14029.

Signed-off-by: Naman Sood <mail@nsood.in>
6 months ago
Irbe Krumina 18ceb4e1f6
cmd/{containerboot,k8s-operator}: allow users to define tailnet egress target by FQDN (#10360)
* cmd/containerboot: proxy traffic to tailnet target defined by FQDN

Add a new Service annotation tailscale.com/tailnet-fqdn that
users can use to specify a tailnet target for which
an egress proxy should be deployed in the cluster.

Updates tailscale/tailscale#10280

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
6 months ago
Claire Wang afacf2e368
containerboot: Add TS_ACCEPT_ROUTES (#10176)
Fixes tailscale/corp#15596

Signed-off-by: Claire Wang <claire@tailscale.com>
6 months ago
Irbe Krumina 664ebb14d9
cmd/containerboot: fix unclean shutdown (#10035)
* cmd/containerboot: shut down cleanly on SIGTERM

Make sure that tailscaled watcher returns when
SIGTERM is received and also that it shuts down
before tailscaled exits.

Updates tailscale/tailscale#10090

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
7 months ago
Maisem Ali 4899c2c1f4 cmd/containerboot: revert to using tailscale up
This partially reverts commits a61a9ab087
and 7538f38671 and fully reverts
4823a7e591.

The goal of that commit was to reapply known config whenever the
container restarts. However, that already happens when TS_AUTH_ONCE was
false (the default back then). So we only had to selectively reapply the
config if TS_AUTH_ONCE is true, this does exactly that.

This is a little sad that we have to revert to `tailscale up`, but it
fixes the backwards incompatibility problem.

Updates tailscale/tailscale#9539

Signed-off-by: Maisem Ali <maisem@tailscale.com>
8 months ago
Maisem Ali 2d4f808a4c cmd/containerboot: fix time based serveConfig watcher
This broke in a last minute refactor and seems to have never worked.

Fixes #9686

Signed-off-by: Maisem Ali <maisem@tailscale.com>
8 months ago
Maisem Ali fbfee6a8c0 cmd/containerboot: use linuxfw.NetfilterRunner
This migrates containerboot to reuse the NetfilterRunner used
by tailscaled instead of manipulating iptables rule itself.
This has the added advantage of now working with nftables and
we can potentially drop the `iptables` command from the container
image in the future.

Updates #9310

Co-authored-by: Irbe Krumina <irbe@tailscale.com>
Signed-off-by: Maisem Ali <maisem@tailscale.com>
8 months ago
Maisem Ali d71184d674 cmd/containerboot: only wipeout serve config when TS_SERVE_CONFIG is set
Fixes #9558

Signed-off-by: Maisem Ali <maisem@tailscale.com>
8 months ago
Denton Gentry 4823a7e591 cmd/containerboot: set TS_AUTH_ONCE default to true.
1.50.0 switched containerboot from using `tailscale up`
to `tailscale login`. A side-effect is that a re-usable
authkey is now re-applied on every boot by `tailscale login`,
where `tailscale up` would ignore an authkey if already
authenticated.

Though this looks like it is changing the default, in reality
it is setting the default to match what 1.48 and all
prior releases actually implemented.

Fixes https://github.com/tailscale/tailscale/issues/9539
Fixes https://github.com/tailscale/corp/issues/14953

Signed-off-by: Denton Gentry <dgentry@tailscale.com>
8 months ago
Maisem Ali 4669e7f7d5 cmd/containerboot: add iptables based MSS clamping for ingress/egress proxies
In typical k8s setups, the MTU configured on the eth0 interfaces is typically 1500 which
results in packets being dropped when they make it to proxy pods as the tailscale0 interface
has a 1280 MTU.

As the primary use of this functionality is TCP, add iptables based MSS clamping to allow
connectivity.

Updates #502

Signed-off-by: Maisem Ali <maisem@tailscale.com>
8 months ago
Irbe Krumina fe709c81e5
cmd/k8s-operator,cmd/containerboot: add kube egress proxy (#9031)
First part of work for the functionality that allows users to create an egress
proxy to access Tailnet services from within Kubernetes cluster workloads.
This PR allows creating an egress proxy that can access Tailscale services over HTTP only.

Updates tailscale/tailscale#8184

Signed-off-by: irbekrm <irbekrm@gmail.com>
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Co-authored-by: Rhea Ghosh <rhea@tailscale.com>
9 months ago
Maisem Ali 7538f38671 cmd/containerboot: fix broken tests
The tests were broken in a61a9ab087, maybe
even earlier.

Updates #502

Signed-off-by: Maisem Ali <maisem@tailscale.com>
9 months ago
Mike Beaumont 3451b89e5f cmd/k8s-operator: put Tailscale IPs in Service ingress status
Updates #502

Signed-off-by: Mike Beaumont <mjboamail@gmail.com>
9 months ago
Maisem Ali 9430481926 cmd/containerboot: account for k8s secret reflection in fsnotify
On k8s the serve-config secret mount is symlinked so checking against
the Name makes us miss the events.

Updates #7895

Signed-off-by: Maisem Ali <maisem@tailscale.com>
9 months ago
Maisem Ali 320f77bd24 cmd/containerboot: add support for setting ServeConfig
This watches the provided path for a JSON encoded ipn.ServeConfig.
Everytime the file changes, or the nodes FQDN changes it reapplies
the ServeConfig.

At boot time, it nils out any previous ServeConfig just like tsnet does.

As the ServeConfig requires pre-existing knowledge of the nodes FQDN to do
SNI matching, it introduces a special `${TS_CERT_DOMAIN}` value in the JSON
file which is replaced with the known CertDomain before it is applied.

Updates #502
Updates #7895

Signed-off-by: Maisem Ali <maisem@tailscale.com>
9 months ago
Maisem Ali a61a9ab087 cmd/containerboot: reapply known args on restart
Previously we would not reapply changes to TS_HOSTNAME etc when
then the container restarted and TS_AUTH_ONCE was enabled.

This splits those into two steps login and set, allowing us to
only rerun the set step on restarts.

Updates #502

Signed-off-by: Maisem Ali <maisem@tailscale.com>
9 months ago
Brad Fitzpatrick 84b94b3146 types/netmap, all: make NetworkMap.SelfNode a tailcfg.NodeView
Updates #1909

Change-Id: I8c470cbc147129a652c1d58eac9b790691b87606
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
9 months ago
Maisem Ali e1530cdfcc cmd/containerboot,kube: consolidate the two kube clients
We had two implemenetations of the kube client, merge them.

containerboot was also using a raw http.Transport, this also has
the side effect of making it use a http.Client

Signed-off-by: Maisem Ali <maisem@tailscale.com>
1 year ago
Maisem Ali 6bae55e351 ipn/ipnlocal: add support to store certs in k8s secrets
Fixes #5676

Signed-off-by: Maisem Ali <maisem@tailscale.com>
1 year ago
Will Norris 71029cea2d all: update copyright and license headers
This updates all source files to use a new standard header for copyright
and license declaration.  Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.

This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.

Updates #6865

Signed-off-by: Will Norris <will@tailscale.com>
1 year ago
David Anderson 9bd6a2fb8d cmd/k8s-operator: support setting a custom hostname.
Updates #502

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 39efba528f cmd/containerboot: use TS_AUTHKEY as the parameter for auth keys
We still accept the previous TS_AUTH_KEY for backwards compatibility, but the documented option name is the spelling we use everywhere else.

Updates #6321

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson af3127711a cmd/containerboot: allow disabling secret storage in k8s.
In some configurations, user explicitly do not want to store
tailscale state in k8s secrets, because doing that leads to
some annoying permission issues with sidecar containers.
With this change, TS_KUBE_SECRET="" and TS_STATE_DIR=/foo
will force storage to file when running in kubernetes.

Fixes #6704.

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 1b65630e83 cmd/containerboot: switch to IPN bus monitoring instead of polling.
We still have to shell out to `tailscale up` because the container image's
API includes "arbitrary flags to tailscale up", unfortunately. But this
should still speed up startup a little, and also enables k8s-bound containers
to update their device information as new netmap updates come in.

Fixes #6657

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
David Anderson 367228ef82 cmd/containerboot: gracefully degrade if missing patch permissions in k8s.
Fixes #6629.

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
David Anderson e36c27bcd1 cmd/containerboot: check that k8s secret permissions are correct.
Updates #6629.

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
David Anderson e04aaa7575 cmd/containerboot: split tailscaled bringup and auth phases.
In preparation for reworking auth to use IPN bus watch.

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
Anton Tolchanov 5ff946a9e6 cmd/containerboot: fix TS_STATE_DIR environment variable
It's supposed to set `--statedir` rather than `--state` file.

Fixes #6634.

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
2 years ago
Maisem Ali 1f4669a380 all: standardize on LocalAPI
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2 years ago
David Anderson 65f3dab4c6 cmd/containerboot: make a tests table, add more tests.
Also fix a bugs found while adding the tests, oops.

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
David Anderson 6acc27a92f cmd/containerboot: be more targeted when enabling IP forwarding.
Only enable forwarding for an IP family if any forwarding is required
for that family.

Fixes #6221.

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
David Anderson bf2d3cd074 cmd/containerboot: don't write device ID when not in Kubernetes.
Fixes #6218.

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
Brad Fitzpatrick da8def8e13 all: remove old +build tags
The //go:build syntax was introduced in Go 1.17:

https://go.dev/doc/go1.17#build-lines

gofmt has kept the +build and go:build lines in sync since
then, but enough time has passed. Time to remove them.

Done with:

    perl -i -npe 's,^// \+build.*\n,,' $(git grep -l -F '+build')

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
David Anderson 76904b82e7 cmd/containerboot: PID1 for running tailscaled in a container.
This implements the same functionality as the former run.sh, but in Go
and with a little better awareness of tailscaled's lifecycle.

Also adds TS_AUTH_ONCE, which fixes the unfortunate behavior run.sh had
where it would unconditionally try to reauth every time if you gave it
an authkey, rather than try to use it only if auth is actually needed.
This makes it a bit nicer to deploy these containers in automation, since
you don't have to run the container once, then go and edit its definition
to remove authkeys.

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago