Merge branch 'main' into 3420

.chloggen/2779-kubeletstatsreiver-inject-en-vars.yaml

@@ -0,0 +1,16 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. collector, target allocator, auto-instrumentation, opamp, github action)
+component: collector
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Inject environment K8S_NODE_NAME environment variable for the Kubelet Stats Receiver.
+
+# One or more tracking issues related to the change
+issues: [2779]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

.chloggen/2947-updating-ds-sf-depl-mutation.yaml

@@ -0,0 +1,16 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: bug_fix
+
+# The name of the component, or a single word describing the area of concern, (e.g. collector, target allocator, auto-instrumentation, opamp, github action)
+component: collector
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: "Fix mutation of deployments, statefulsets, and daemonsets allowing to remove fields on update"
+
+# One or more tracking issues related to the change
+issues: [2947]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

.chloggen/3332-musl-python-autoinstrumentation.yaml

@@ -0,0 +1,16 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. collector, target allocator, auto-instrumentation, opamp, github action)
+component: auto-instrumentation
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: add config for installing musl based auto-instrumentation for Python
+
+# One or more tracking issues related to the change
+issues: [2264]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

.chloggen/scrape-config-probe.yaml

@@ -0,0 +1,16 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. collector, target allocator, auto-instrumentation, opamp, github action)
+component: target allocator
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: enables support for pulling scrape config and probe CRDs in the target allocator
+
+# One or more tracking issues related to the change
+issues: [1842]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:

README.md

@@ -292,9 +292,12 @@ instrumentation.opentelemetry.io/inject-nodejs: "true"
 ```
 
 Python:
+Python auto-instrumentation also honors an annotation that will permit it to run it on images with a different C library than glibc.
 
 ```bash
 instrumentation.opentelemetry.io/inject-python: "true"
+instrumentation.opentelemetry.io/otel-python-platform: "glibc" # for Linux glibc based images, this is the default value and can be omitted
+instrumentation.opentelemetry.io/otel-python-platform: "musl" # for Linux musl based images
 ```
 
 .NET:

apis/v1beta1/config.go

@@ -226,6 +226,42 @@ func (c *Config) getPortsForComponentKinds(logger logr.Logger, componentKinds ..
 	return ports, nil
 }
 
+// getEnvironmentVariablesForComponentKinds gets the environment variables for the given ComponentKind(s).
+func (c *Config) getEnvironmentVariablesForComponentKinds(logger logr.Logger, componentKinds ...ComponentKind) ([]corev1.EnvVar, error) {
+	var envVars []corev1.EnvVar = []corev1.EnvVar{}
+	enabledComponents := c.GetEnabledComponents()
+	for _, componentKind := range componentKinds {
+		var retriever components.ParserRetriever
+		var cfg AnyConfig
+
+		switch componentKind {
+		case KindReceiver:
+			retriever = receivers.ReceiverFor
+			cfg = c.Receivers
+		case KindExporter:
+			continue
+		case KindProcessor:
+			continue
+		case KindExtension:
+			continue
+		}
+		for componentName := range enabledComponents[componentKind] {
+			parser := retriever(componentName)
+			if parsedEnvVars, err := parser.GetEnvironmentVariables(logger, cfg.Object[componentName]); err != nil {
+				return nil, err
+			} else {
+				envVars = append(envVars, parsedEnvVars...)
+			}
+		}
+	}
+
+	sort.Slice(envVars, func(i, j int) bool {
+		return envVars[i].Name < envVars[j].Name
+	})
+
+	return envVars, nil
+}
+
 // applyDefaultForComponentKinds applies defaults to the endpoints for the given ComponentKind(s).
 func (c *Config) applyDefaultForComponentKinds(logger logr.Logger, componentKinds ...ComponentKind) error {
 	if err := c.Service.ApplyDefaults(); err != nil {
@@ -286,6 +322,10 @@ func (c *Config) GetAllPorts(logger logr.Logger) ([]corev1.ServicePort, error) {
 	return c.getPortsForComponentKinds(logger, KindReceiver, KindExporter)
 }
 
+func (c *Config) GetEnvironmentVariables(logger logr.Logger) ([]corev1.EnvVar, error) {
+	return c.getEnvironmentVariablesForComponentKinds(logger, KindReceiver)
+}
+
 func (c *Config) GetAllRbacRules(logger logr.Logger) ([]rbacv1.PolicyRule, error) {
 	return c.getRbacRulesForComponentKinds(logger, KindReceiver, KindExporter, KindProcessor)
 }

apis/v1beta1/config_test.go

@@ -423,6 +423,66 @@ func TestConfig_GetEnabledComponents(t *testing.T) {
 	}
 }
 
+func TestConfig_getEnvironmentVariablesForComponentKinds(t *testing.T) {
+	tests := []struct {
+		name           string
+		config         *Config
+		componentKinds []ComponentKind
+		envVarsLen     int
+	}{
+		{
+			name: "no env vars",
+			config: &Config{
+				Receivers: AnyConfig{
+					Object: map[string]interface{}{
+						"myreceiver": map[string]interface{}{
+							"env": "test",
+						},
+					},
+				},
+				Service: Service{
+					Pipelines: map[string]*Pipeline{
+						"test": {
+							Receivers: []string{"myreceiver"},
+						},
+					},
+				},
+			},
+			componentKinds: []ComponentKind{KindReceiver},
+			envVarsLen:     0,
+		},
+		{
+			name: "kubeletstats env vars",
+			config: &Config{
+				Receivers: AnyConfig{
+					Object: map[string]interface{}{
+						"kubeletstats": map[string]interface{}{},
+					},
+				},
+				Service: Service{
+					Pipelines: map[string]*Pipeline{
+						"test": {
+							Receivers: []string{"kubeletstats"},
+						},
+					},
+				},
+			},
+			componentKinds: []ComponentKind{KindReceiver},
+			envVarsLen:     1,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			logger := logr.Discard()
+			envVars, err := tt.config.GetEnvironmentVariables(logger)
+
+			assert.NoError(t, err)
+			assert.Len(t, envVars, tt.envVarsLen)
+		})
+	}
+}
+
 func TestConfig_GetReceiverPorts(t *testing.T) {
 	tests := []struct {
 		name    string

cmd/otel-allocator/benchmark_test.go

@@ -0,0 +1,175 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"testing"
+
+	gokitlog "github.com/go-kit/log"
+	"github.com/go-logr/logr"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/common/model"
+	"github.com/prometheus/prometheus/discovery"
+	"github.com/prometheus/prometheus/discovery/targetgroup"
+	"github.com/prometheus/prometheus/model/relabel"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/log"
+
+	"github.com/open-telemetry/opentelemetry-operator/cmd/otel-allocator/allocation"
+	"github.com/open-telemetry/opentelemetry-operator/cmd/otel-allocator/prehook"
+	"github.com/open-telemetry/opentelemetry-operator/cmd/otel-allocator/server"
+	"github.com/open-telemetry/opentelemetry-operator/cmd/otel-allocator/target"
+)
+
+// BenchmarkProcessTargets benchmarks the whole target allocation pipeline. It starts with data the prometheus
+// discovery manager would normally output, and pushes it all the way into the allocator. It notably doe *not* check
+// the HTTP server afterward. Test data is chosen to be reasonably representative of what the Prometheus service discovery
+// outputs in the real world.
+func BenchmarkProcessTargets(b *testing.B) {
+	numTargets := 10000
+	targetsPerGroup := 5
+	groupsPerJob := 20
+	tsets := prepareBenchmarkData(numTargets, targetsPerGroup, groupsPerJob)
+
+	b.ResetTimer()
+	for _, strategy := range allocation.GetRegisteredAllocatorNames() {
+		b.Run(strategy, func(b *testing.B) {
+			targetDiscoverer, allocator := createTestDiscoverer(strategy, map[string][]*relabel.Config{})
+			for i := 0; i < b.N; i++ {
+				targetDiscoverer.ProcessTargets(tsets, allocator.SetTargets)
+			}
+		})
+	}
+}
+
+// BenchmarkProcessTargetsWithRelabelConfig is BenchmarkProcessTargets with a relabel config set. The relabel config
+// does not actually modify any records, but does force the prehook to perform any necessary conversions along the way.
+func BenchmarkProcessTargetsWithRelabelConfig(b *testing.B) {
+	numTargets := 10000
+	targetsPerGroup := 5
+	groupsPerJob := 20
+	tsets := prepareBenchmarkData(numTargets, targetsPerGroup, groupsPerJob)
+	prehookConfig := make(map[string][]*relabel.Config, len(tsets))
+	for jobName := range tsets {
+		prehookConfig[jobName] = []*relabel.Config{
+			{
+				Action: "keep",
+				Regex:  relabel.MustNewRegexp(".*"),
+			},
+		}
+	}
+
+	b.ResetTimer()
+	for _, strategy := range allocation.GetRegisteredAllocatorNames() {
+		b.Run(strategy, func(b *testing.B) {
+			targetDiscoverer, allocator := createTestDiscoverer(strategy, prehookConfig)
+			for i := 0; i < b.N; i++ {
+				targetDiscoverer.ProcessTargets(tsets, allocator.SetTargets)
+			}
+		})
+	}
+}
+
+func prepareBenchmarkData(numTargets, targetsPerGroup, groupsPerJob int) map[string][]*targetgroup.Group {
+	numGroups := numTargets / targetsPerGroup
+	numJobs := numGroups / groupsPerJob
+	jobNamePrefix := "test-"
+	groupLabels := model.LabelSet{
+		"__meta_kubernetes_pod_controller_name":                                                 "example",
+		"__meta_kubernetes_pod_ip":                                                              "10.244.0.251",
+		"__meta_kubernetes_pod_uid":                                                             "676ebee7-14f8-481e-a937-d2affaec4105",
+		"__meta_kubernetes_endpointslice_port_protocol":                                         "TCP",
+		"__meta_kubernetes_endpointslice_endpoint_conditions_ready":                             "true",
+		"__meta_kubernetes_service_annotation_kubectl_kubernetes_io_last_applied_configuration": "{\"apiVersion\":\"v1\",\"kind\":\"Service\",\"metadata\":{\"annotations\":{},\"labels\":{\"app\":\"example\"},\"name\":\"example-svc\",\"namespace\":\"example\"},\"spec\":{\"clusterIP\":\"None\",\"ports\":[{\"name\":\"http-example\",\"port\":9006,\"targetPort\":9006}],\"selector\":{\"app\":\"example\"},\"type\":\"ClusterIP\"}}\n",
+		"__meta_kubernetes_endpointslice_labelpresent_app":                                      "true",
+		"__meta_kubernetes_endpointslice_name":                                                  "example-svc-qgwxf",
+		"__address__":                                                                           "10.244.0.251:9006",
+		"__meta_kubernetes_endpointslice_endpoint_conditions_terminating":                       "false",
+		"__meta_kubernetes_pod_labelpresent_pod_template_hash":                                  "true",
+		"__meta_kubernetes_endpointslice_label_kubernetes_io_service_name":                      "example-svc",
+		"__meta_kubernetes_endpointslice_labelpresent_service_kubernetes_io_headless":           "true",
+		"__meta_kubernetes_pod_label_pod_template_hash":                                         "6b549885f8",
+		"__meta_kubernetes_endpointslice_address_target_name":                                   "example-6b549885f8-7tbcw",
+		"__meta_kubernetes_pod_labelpresent_app":                                                "true",
+		"somelabel":                                                                             "somevalue",
+	}
+	exampleTarget := model.LabelSet{
+		"__meta_kubernetes_endpointslice_port":                                                               "9006",
+		"__meta_kubernetes_service_label_app":                                                                "example",
+		"__meta_kubernetes_endpointslice_port_name":                                                          "http-example",
+		"__meta_kubernetes_pod_ready":                                                                        "true",
+		"__meta_kubernetes_endpointslice_address_type":                                                       "IPv4",
+		"__meta_kubernetes_endpointslice_label_endpointslice_kubernetes_io_managed_by":                       "endpointslice-controller.k8s.io",
+		"__meta_kubernetes_endpointslice_labelpresent_endpointslice_kubernetes_io_managed_by":                "true",
+		"__meta_kubernetes_endpointslice_label_app":                                                          "example",
+		"__meta_kubernetes_endpointslice_endpoint_conditions_serving":                                        "true",
+		"__meta_kubernetes_pod_phase":                                                                        "Running",
+		"__meta_kubernetes_pod_controller_kind":                                                              "ReplicaSet",
+		"__meta_kubernetes_service_annotationpresent_kubectl_kubernetes_io_last_applied_configuration":       "true",
+		"__meta_kubernetes_service_labelpresent_app":                                                         "true",
+		"__meta_kubernetes_endpointslice_labelpresent_kubernetes_io_service_name":                            "true",
+		"__meta_kubernetes_endpointslice_annotation_endpoints_kubernetes_io_last_change_trigger_time":        "2023-09-27T16:01:29Z",
+		"__meta_kubernetes_pod_name":                                                                         "example-6b549885f8-7tbcw",
+		"__meta_kubernetes_service_name":                                                                     "example-svc",
+		"__meta_kubernetes_namespace":                                                                        "example",
+		"__meta_kubernetes_endpointslice_annotationpresent_endpoints_kubernetes_io_last_change_trigger_time": "true",
+		"__meta_kubernetes_pod_node_name":                                                                    "kind-control-plane",
+		"__meta_kubernetes_endpointslice_address_target_kind":                                                "Pod",
+		"__meta_kubernetes_pod_host_ip":                                                                      "172.18.0.2",
+		"__meta_kubernetes_endpointslice_label_service_kubernetes_io_headless":                               "",
+		"__meta_kubernetes_pod_label_app":                                                                    "example",
+	}
+	targets := []model.LabelSet{}
+	for i := 0; i < numTargets; i++ {
+		targets = append(targets, exampleTarget.Clone())
+	}
+	groups := make([]*targetgroup.Group, numGroups)
+	for i := 0; i < numGroups; i++ {
+		groupTargets := targets[(i * targetsPerGroup):(i*targetsPerGroup + targetsPerGroup)]
+		groups[i] = &targetgroup.Group{
+			Labels:  groupLabels,
+			Targets: groupTargets,
+		}
+	}
+	tsets := make(map[string][]*targetgroup.Group, numJobs)
+	for i := 0; i < numJobs; i++ {
+		jobGroups := groups[(i * groupsPerJob):(i*groupsPerJob + groupsPerJob)]
+		jobName := fmt.Sprintf("%s%d", jobNamePrefix, i)
+		tsets[jobName] = jobGroups
+	}
+	return tsets
+}
+
+func createTestDiscoverer(allocationStrategy string, prehookConfig map[string][]*relabel.Config) (*target.Discoverer, allocation.Allocator) {
+	ctx := context.Background()
+	logger := ctrl.Log.WithName(fmt.Sprintf("bench-%s", allocationStrategy))
+	ctrl.SetLogger(logr.New(log.NullLogSink{}))
+	allocatorPrehook := prehook.New("relabel-config", logger)
+	allocatorPrehook.SetConfig(prehookConfig)
+	allocator, err := allocation.New(allocationStrategy, logger, allocation.WithFilter(allocatorPrehook))
+	srv := server.NewServer(logger, allocator, "localhost:0")
+	if err != nil {
+		setupLog.Error(err, "Unable to initialize allocation strategy")
+		os.Exit(1)
+	}
+	registry := prometheus.NewRegistry()
+	sdMetrics, _ := discovery.CreateAndRegisterSDMetrics(registry)
+	discoveryManager := discovery.NewManager(ctx, gokitlog.NewNopLogger(), registry, sdMetrics)
+	targetDiscoverer := target.NewDiscoverer(logger, discoveryManager, allocatorPrehook, srv)
+	return targetDiscoverer, allocator
+}

cmd/otel-allocator/config/config.go

@@ -61,9 +61,13 @@ type Config struct {
 type PrometheusCRConfig struct {
 	Enabled                         bool                  `yaml:"enabled,omitempty"`
 	PodMonitorSelector              *metav1.LabelSelector `yaml:"pod_monitor_selector,omitempty"`
+	PodMonitorNamespaceSelector     *metav1.LabelSelector `yaml:"pod_monitor_namespace_selector,omitempty"`
 	ServiceMonitorSelector          *metav1.LabelSelector `yaml:"service_monitor_selector,omitempty"`
 	ServiceMonitorNamespaceSelector *metav1.LabelSelector `yaml:"service_monitor_namespace_selector,omitempty"`
-	PodMonitorNamespaceSelector     *metav1.LabelSelector `yaml:"pod_monitor_namespace_selector,omitempty"`
+	ScrapeConfigSelector            *metav1.LabelSelector `yaml:"scrape_config_selector,omitempty"`
+	ScrapeConfigNamespaceSelector   *metav1.LabelSelector `yaml:"scrape_config_namespace_selector,omitempty"`
+	ProbeSelector                   *metav1.LabelSelector `yaml:"probe_selector,omitempty"`
+	ProbeNamespaceSelector          *metav1.LabelSelector `yaml:"probe_namespace_selector,omitempty"`
 	ScrapeInterval                  model.Duration        `yaml:"scrape_interval,omitempty"`
 }