chore: cleanup some knative const, delete env SYSTEM_NAMESPACE FROM o…

…perator.

Signed-off-by: Lan Liang <[email protected]>

kwok/charts/templates/deployment.yaml

@@ -94,10 +94,6 @@ spec:
               value: "{{ .Values.controller.metrics.port }}"
             - name: HEALTH_PROBE_PORT
               value: "{{ .Values.controller.healthProbe.port }}"
-            - name: SYSTEM_NAMESPACE
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.namespace
             - name: MEMORY_LIMIT
               valueFrom:
                 resourceFieldRef:

pkg/operator/logging/logging.go

@@ -27,8 +27,6 @@ import (
 	"go.uber.org/zap/zapcore"
 	"knative.dev/pkg/changeset"
 
-	"knative.dev/pkg/logging/logkey"
-
 	"sigs.k8s.io/karpenter/pkg/operator/options"
 )
 
@@ -84,7 +82,7 @@ func WithCommit(logger *zap.Logger) *zap.Logger {
 		return logger
 	}
 	// Enrich logs with the components git revision.
-	return logger.With(zap.String(logkey.Commit, revision))
+	return logger.With(zap.String("commit", revision))
 }
 
 type ignoreDebugEventsSink struct {

pkg/operator/operator.go

@@ -55,7 +55,6 @@ import (
 	"k8s.io/utils/clock"
 	knativeinjection "knative.dev/pkg/injection"
 	"knative.dev/pkg/signals"
-	"knative.dev/pkg/system"
 	"knative.dev/pkg/webhook"
 	"sigs.k8s.io/controller-runtime/pkg/cache"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -113,7 +112,6 @@ type Operator struct {
 func NewOperator() (context.Context, *Operator) {
 	// Root Context
 	ctx := signals.NewContext()
-	ctx = knativeinjection.WithNamespaceScope(ctx, system.Namespace())
 
 	// Options
 	ctx = injection.WithOptionsOrDie(ctx, options.Injectables...)
@@ -154,7 +152,6 @@ func NewOperator() (context.Context, *Operator) {
 		LeaderElection:                !options.FromContext(ctx).DisableLeaderElection,
 		LeaderElectionID:              "karpenter-leader-election",
 		LeaderElectionResourceLock:    resourcelock.LeasesResourceLock,
-		LeaderElectionNamespace:       system.Namespace(),
 		LeaderElectionReleaseOnCancel: true,
 		Metrics: server.Options{
 			BindAddress: fmt.Sprintf(":%d", options.FromContext(ctx).MetricsPort),

pkg/test/environment.go

@@ -30,7 +30,6 @@ import (
 	"k8s.io/apimachinery/pkg/util/version"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/kubernetes/scheme"
-	"knative.dev/pkg/system"
 	"sigs.k8s.io/controller-runtime/pkg/cache"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/envtest"
@@ -88,7 +87,6 @@ func NewEnvironment(options ...option.Function[EnvironmentOptions]) *Environment
 	opts := option.Resolve(options...)
 	ctx, cancel := context.WithCancel(context.Background())
 
-	os.Setenv(system.NamespaceEnvKey, "default")
 	version := version.MustParseSemantic(strings.Replace(env.WithDefaultString("K8S_VERSION", "1.30.x"), ".x", ".0", -1))
 	environment := envtest.Environment{Scheme: scheme.Scheme, CRDs: opts.crds}
 	if version.Minor() >= 21 {

test/pkg/environment/common/environment.go

@@ -42,7 +42,6 @@ import (
 	. "sigs.k8s.io/karpenter/pkg/utils/testing" //nolint:stylecheck
 	"sigs.k8s.io/karpenter/test/pkg/debug"
 
-	"knative.dev/pkg/system"
 	controllerruntime "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/cache"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -77,7 +76,6 @@ func NewEnvironment(t *testing.T) *Environment {
 	config := NewConfig()
 	client := NewClient(ctx, config)
 
-	lo.Must0(os.Setenv(system.NamespaceEnvKey, "kube-system"))
 	if val, ok := os.LookupEnv("GIT_REF"); ok {
 		ctx = context.WithValue(ctx, GitRefContextKey, val)
 	}