refactor(vmi-router): Use IP from our VirtualMachine (#69)

* refactor(vmi-router): Use IP from our VirtualMachine

- Use status.ipaddress instead of extracting ip from huge status in Kubevirt VM.
- Add environment variable CILIUM_ROUTE_TABLE_ID for route table id.
- Refactor: proper use of controller-runtime.
- Deps: drop kubevirt.io/client, update netlink, cilium, controller-runtime, k8 dependencies.
- Fix: add aliases for netlink methods to develop with comfort in non-linux OSes.
- Add golang 21 base image.

Signed-off-by: Ivan Mikheykin <[email protected]>

Author: diafour

images/base-golang-21-bookworm/werf.inc.yaml

@@ -0,0 +1,3 @@
+---
+image: {{ $.ImageName }}
+from: docker.io/golang:1.21.8-bookworm@sha256:ac14cc827536ef1a124cd2f7a03178c3335c1db8ad3807e7fdd57f74096abfa0

images/vmi-router/README.md

@@ -0,0 +1,41 @@
+## vmi-router
+
+> **NOTE:** Not an accurate name, should be 'cilium-route-updater'.
+
+This controller watches for VirtualMachines in virtualization.deckhouse.io group and updates routes in table 1490 to route traffic between VMs via Cilium agents.
+
+It should be run as a DaemonSet with the `hostNetwork: true` to be able to modify route tables on cluster Nodes.
+
+### Configuration
+
+#### Log verbosity
+
+Set VERBOSITY environment variable or -v flag.
+
+#### Route table ID
+
+Hardcoded as integer `1490`.
+
+#### CIDRs
+
+Use --cidr flags to specify CIDRs to limit managed IPs. Controller will update routes for VMs which IPs belong to specified CIDRs.
+
+Example:
+
+```
+vmi-router --cidr 10.2.0.0/24 --cidr 10.2.1.0/24 --cidr 10.2.2.0/24 
+```
+
+Controller will update route for VM with IP 10.2.1.32, but will ignore VM with IP 10.2.4.5.
+
+#### Dry run mode
+
+Use --dry-run flag to enable non destructive mode. The controller will not actually delete or replace rules and routes, only log these actions.
+
+#### Metrics and healthz addresses
+
+Controller can't predict used ports when starting in host network mode. So, be default, metrics and healthz are started on random free ports. Use flags to specify these addresses:
+
+`--metrics-bind-address` - set port for /metrics endpoint, e.g. `--metrics-bind-address=:9250`
+`--health-probe-bind-address` - set port for /healthz endpoint, e.g. `--health-probe-bind-address=:9321`
+

images/vmi-router/controllers/suite_test.go

@@ -28,7 +28,6 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/envtest"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
-	//+kubebuilder:scaffold:imports
 )
 
 // These tests use Ginkgo (BDD-style Go testing framework). Refer to
@@ -48,8 +47,8 @@ var _ = BeforeSuite(func() {
 
 	By("bootstrapping test environment")
 	testEnv = &envtest.Environment{
-		CRDDirectoryPaths:     []string{filepath.Join("..", "config", "crd", "bases")},
-		ErrorIfCRDPathMissing: false,
+		CRDDirectoryPaths:     []string{filepath.Join("..", "..", "crds")},
+		ErrorIfCRDPathMissing: true,
 	}
 
 	var err error
@@ -58,13 +57,10 @@ var _ = BeforeSuite(func() {
 	Expect(err).NotTo(HaveOccurred())
 	Expect(cfg).NotTo(BeNil())
 
-	//+kubebuilder:scaffold:scheme
-
 	k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme})
 	Expect(err).NotTo(HaveOccurred())
 	Expect(k8sClient).NotTo(BeNil())
-
-}, 60)
+})
 
 var _ = AfterSuite(func() {
 	By("tearing down the test environment")