This commit modifies the kubernetes operator to use the `tailscale-client-go-v2`
package instead of the internal tailscale client it was previously using. This
now gives us the ability to expand out custom resources and features as they
become available via the API module.
The tailnet reconciler has also been modified to manage clients as tailnets
are created and removed, providing each subsequent reconciler with a single
`ClientProvider` that obtains a tailscale client for the respective tailnet
by name, or the operator's default when presented with a blank string.
Fixes: https://github.com/tailscale/corp/issues/38418
Signed-off-by: David Bond <davidsbond93@gmail.com>
This file was never truly necessary and has never actually been used in
the history of Tailscale's open source releases.
A Brief History of AUTHORS files
---
The AUTHORS file was a pattern developed at Google, originally for
Chromium, then adopted by Go and a bunch of other projects. The problem
was that Chromium originally had a copyright line only recognizing
Google as the copyright holder. Because Google (and most open source
projects) do not require copyright assignemnt for contributions, each
contributor maintains their copyright. Some large corporate contributors
then tried to add their own name to the copyright line in the LICENSE
file or in file headers. This quickly becomes unwieldy, and puts a
tremendous burden on anyone building on top of Chromium, since the
license requires that they keep all copyright lines intact.
The compromise was to create an AUTHORS file that would list all of the
copyright holders. The LICENSE file and source file headers would then
include that list by reference, listing the copyright holder as "The
Chromium Authors".
This also become cumbersome to simply keep the file up to date with a
high rate of new contributors. Plus it's not always obvious who the
copyright holder is. Sometimes it is the individual making the
contribution, but many times it may be their employer. There is no way
for the proejct maintainer to know.
Eventually, Google changed their policy to no longer recommend trying to
keep the AUTHORS file up to date proactively, and instead to only add to
it when requested: https://opensource.google/docs/releasing/authors.
They are also clear that:
> Adding contributors to the AUTHORS file is entirely within the
> project's discretion and has no implications for copyright ownership.
It was primarily added to appease a small number of large contributors
that insisted that they be recognized as copyright holders (which was
entirely their right to do). But it's not truly necessary, and not even
the most accurate way of identifying contributors and/or copyright
holders.
In practice, we've never added anyone to our AUTHORS file. It only lists
Tailscale, so it's not really serving any purpose. It also causes
confusion because Tailscalars put the "Tailscale Inc & AUTHORS" header
in other open source repos which don't actually have an AUTHORS file, so
it's ambiguous what that means.
Instead, we just acknowledge that the contributors to Tailscale (whoever
they are) are copyright holders for their individual contributions. We
also have the benefit of using the DCO (developercertificate.org) which
provides some additional certification of their right to make the
contribution.
The source file changes were purely mechanical with:
git ls-files | xargs sed -i -e 's/\(Tailscale Inc &\) AUTHORS/\1 contributors/g'
Updates #cleanup
Change-Id: Ia101a4a3005adb9118051b3416f5a64a4a45987d
Signed-off-by: Will Norris <will@tailscale.com>
This commit adds a `replicas` field to the `Connector` custom resource that
allows users to specify the number of desired replicas deployed for their
connectors.
This allows users to deploy exit nodes, subnet routers and app connectors
in a highly available fashion.
Fixes#14020
Signed-off-by: David Bond <davidsbond93@gmail.com>
Proxies know how to reload configfile on changes since 1.80, which
is going to be the earliest supported proxy version with 1.84 operator,
so remove the mechanism that was updating configfile hash to force
proxy Pod restarts on config changes.
Updates #13032
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
* cmd/k8s-operator,k8s-operator: allow users to set custom labels for the optional ServiceMonitor
Updates tailscale/tailscale#14381
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
The default ProxyClass can be set via helm chart or env var, and applies
to all proxies that do not otherwise have an explicit ProxyClass set.
This ensures proxies created by the new ProxyGroup CRD are consistent
with the behaviour of existing proxies
Nearby but unrelated changes:
* Fix up double error logs (controller runtime logs returned errors)
* Fix a couple of variable names
Updates #13406
Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
Rename kube/{types,client,api} -> kube/{kubetypes,kubeclient,kubeapi}
so that we don't need to rename the package on each import to
convey that it's kubernetes specific.
Updates#cleanup
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
Further split kube package into kube/{client,api,types}. This is so that
consumers who only need constants/static types don't have to import
the client and api bits.
Updates#cleanup
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
Adds a new TailscaleProxyReady condition type for use in corev1.Service
conditions.
Also switch our CRDs to use metav1.Condition instead of
ConnectorCondition. The Go structs are seralized identically, but it
updates some descriptions and validation rules. Update k8s
controller-tools and controller-runtime deps to fix the documentation
generation for metav1.Condition so that it excludes comments and
TODOs.
Stop expecting the fake client to populate TypeMeta in tests. See
kubernetes-sigs/controller-runtime#2633 for details of the change.
Finally, make some minor improvements to validation for service hostnames.
Fixes#12216
Co-authored-by: Irbe Krumina <irbe@tailscale.com>
Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
Add a new .spec.tailscale.acceptRoutes field to ProxyClass,
that can be optionally set to true for the proxies to
accept routes advertized by other nodes on tailnet (equivalent of
setting --accept-routes to true).
Updates tailscale/tailscale#12322,tailscale/tailscale#10684
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
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>
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>
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>
* cmd/k8s-operator,k8s-operator: introduce proxy configuration mechanism via ProxyClass custom resource.
ProxyClass custom resource can be used to specify customizations
for the proxy resources created by the operator.
Add a reconciler that validates ProxyClass resources
and sets a Ready condition to True or False with a corresponding reason and message.
This is required because some fields (labels and annotations)
require complex validations that cannot be performed at custom resource apply time.
Reconcilers that use the ProxyClass to configure proxy resources are expected to
verify that the ProxyClass is Ready and not proceed with resource creation
if configuration from a ProxyClass that is not yet Ready is required.
If a tailscale ingress/egress Service is annotated with a tailscale.com/proxy-class annotation, look up the corresponding ProxyClass and, if it is Ready, apply the configuration from the ProxyClass to the proxy's StatefulSet.
If a tailscale Ingress has a tailscale.com/proxy-class annotation
and the referenced ProxyClass custom resource is available and Ready,
apply configuration from the ProxyClass to the proxy resources
that will be created for the Ingress.
Add a new .proxyClass field to the Connector spec.
If connector.spec.proxyClass is set to a ProxyClass that is available and Ready,
apply configuration from the ProxyClass to the proxy resources created for the Connector.
Ensure that when Helm chart is packaged, the ProxyClass yaml is added to chart templates. Ensure that static manifest generator adds ProxyClass yaml to operator.yaml. Regenerate operator.yaml
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
cmd/k8s-operator/deploy/crds,k8s-operator/apis/v1alpha1: allow to define an exit node via Connector CR.
Make it possible to define an exit node to be deployed to a Kubernetes cluster
via Connector Custom resource.
Also changes to Connector API so that one Connector corresponds
to one Tailnet node that can be either a subnet router or an exit
node or both.
The Kubernetes operator parses Connector custom resource and,
if .spec.isExitNode is set, configures that Tailscale node deployed
for that connector as an exit node.
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
Co-authored-by: Anton Tolchanov <anton@tailscale.com>
* k8s-operator,cmd/k8s-operator,Makefile,scripts,.github/workflows: add Connector kube CRD.
Connector CRD allows users to configure the Tailscale Kubernetes operator
to deploy a subnet router to expose cluster CIDRs or
other CIDRs available from within the cluster
to their tailnet.
Also adds various CRD related machinery to
generate CRD YAML, deep copy implementations etc.
Engineers will now have to run
'make kube-generate-all` after changing kube files
to ensure that all generated files are up to date.
* cmd/k8s-operator,k8s-operator: reconcile Connector resources
Reconcile Connector resources, create/delete subnetrouter resources in response to changes to Connector(s).
Connector reconciler will not be started unless
ENABLE_CONNECTOR env var is set to true.
This means that users who don't want to use the alpha
Connector custom resource don't have to install the Connector
CRD to their cluster.
For users who do want to use it the flow is:
- install the CRD
- install the operator (via Helm chart or using static manifests).
For Helm users set .values.enableConnector to true, for static
manifest users, set ENABLE_CONNECTOR to true in the static manifest.
Updates tailscale/tailscale#502
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
David Bond
Brad Fitzpatrick
Will Norris
Irbe Krumina
Tom Proctor