Commit Graph

16 Commits (7bac5dffcbf093f44b7259d715fa1dfd9f12cd78)

Author SHA1 Message Date
Irbe Krumina c5623e0471
go.{mod,sum},tstest/tools,k8s-operator,cmd/k8s-operator: autogenerate CRD API docs (#12884)
Re-instates the functionality that generates CRD API docs, but using
a different library as the one we were using earlier seemed to have
some issues with its Git history.
Also regenerates the docs (make kube-generate-all).

Updates tailscale/tailscale#12859

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
4 months ago
Tom Proctor 3099323976
cmd/k8s-operator,k8s-operator,go.{mod,sum}: publish proxy status condition for annotated services (#12463)
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>
5 months ago
Irbe Krumina 807934f00c
cmd/k8s-operator,k8s-operator: allow proxies accept advertized routes. (#12388)
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>
5 months ago
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>
5 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>
5 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>
5 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>
6 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
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 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
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 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
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
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>
7 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
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