Merge branch 'main' into dependabot/go_modules/otel-dependencies-034d…

…251fb6

.buildkite/pipeline.elastic-agent-package.yml

@@ -134,6 +134,8 @@ steps:
     depends_on: package
     agents:
       provider: "gcp"
+      machineType: "n2-standard-8"
+      diskSizeGb: 250
     env:
       DRA_PROJECT_ID: "elastic-agent-package"
       DRA_PROJECT_ARTIFACT_ID: "agent-package"

.buildkite/scripts/steps/integration_tests.sh

@@ -11,7 +11,7 @@ MAGE_SUBTARGET="${3:-""}"
 # Override the agent package version using a string with format <major>.<minor>.<patch>
 # NOTE: use only after version bump when the new version is not yet available, for example:
 # OVERRIDE_AGENT_PACKAGE_VERSION="8.10.3" otherwise OVERRIDE_AGENT_PACKAGE_VERSION="".
-OVERRIDE_AGENT_PACKAGE_VERSION=""
+OVERRIDE_AGENT_PACKAGE_VERSION="8.14.0"
 
 if [[ -n "$OVERRIDE_AGENT_PACKAGE_VERSION" ]]; then
   OVERRIDE_TEST_AGENT_VERSION=${OVERRIDE_AGENT_PACKAGE_VERSION}"-SNAPSHOT"

.mergify.yml

@@ -306,3 +306,16 @@ pull_request_rules:
         labels:
           - "backport"
         title: "[{{ destination_branch }}](backport #{{ number }}) {{ title }}"
+  - name: backport patches to 8.14 branch
+    conditions:
+      - merged
+      - label=backport-v8.14.0
+    actions:
+      backport:
+        assignees:
+          - "{{ author }}"
+        branches:
+          - "8.14"
+        labels:
+          - "backport"
+        title: "[{{ destination_branch }}](backport #{{ number }}) {{ title }}"

changelog/fragments/1711355973-Introduce-non-grouping-for-input-spec.yaml

@@ -0,0 +1,34 @@
+# Kind can be one of:
+# - breaking-change: a change to previously-documented behavior
+# - deprecation: functionality that is being removed in a later release
+# - bug-fix: fixes a problem in a previous version
+# - enhancement: extends functionality but does not break or fix existing behavior
+# - feature: new functionality
+# - known-issue: problems that we are aware of in a given version
+# - security: impacts on the security of a product or a user’s deployment.
+# - upgrade: important information for someone upgrading from a prior version
+# - other: does not fit into any of the other categories
+kind: feature
+
+# Change summary; a 80ish characters long description of the change.
+summary: Introduce isolate units for input spec.
+
+# Long description; in case the summary is not enough to describe the change
+# this field accommodate a description without length limits.
+# NOTE: This field will be rendered only for breaking-change and known-issue kinds at the moment.
+description: |
+  Introduce a new flag in the spec that will allow to disable grouping of same input type inputs into a single component.
+  If that flag is being activated the inputs won't be grouped and we will create a separate component for each input that will run units for that particular input.
+
+# Affected component; usually one of "elastic-agent", "fleet-server", "filebeat", "metricbeat", "auditbeat", "all", etc.
+component: elastic-agent
+
+# PR URL; optional; the PR number that added the changeset.
+# If not present is automatically filled by the tooling finding the PR where this changelog fragment has been added.
+# NOTE: the tooling supports backports, so it's able to fill the original PR number instead of the backport PR number.
+# Please provide it if you are adding a fragment for a different PR.
+pr: https://github.com/elastic/elastic-agent/pull/4476
+
+# Issue URL; optional; the GitHub issue related to this changeset (either closes or is part of).
+# If not present is automatically filled by the tooling with the issue linked to the PR number.
+issue: https://github.com/elastic/security-team/issues/8669

changelog/fragments/1712583231-leader-election-issue.yaml

@@ -0,0 +1,32 @@
+# Kind can be one of:
+# - breaking-change: a change to previously-documented behavior
+# - deprecation: functionality that is being removed in a later release
+# - bug-fix: fixes a problem in a previous version
+# - enhancement: extends functionality but does not break or fix existing behavior
+# - feature: new functionality
+# - known-issue: problems that we are aware of in a given version
+# - security: impacts on the security of a product or a user’s deployment.
+# - upgrade: important information for someone upgrading from a prior version
+# - other: does not fit into any of the other categories
+kind: bug-fix
+
+# Change summary; a 80ish characters long description of the change.
+summary: Fix issue where kubernetes_leaderelection provider would not try to reacquire the lease once lost
+
+# Long description; in case the summary is not enough to describe the change
+# this field accommodate a description without length limits.
+# NOTE: This field will be rendered only for breaking-change and known-issue kinds at the moment.
+#description:
+
+# Affected component; usually one of "elastic-agent", "fleet-server", "filebeat", "metricbeat", "auditbeat", "all", etc.
+component: elastic-agent
+
+# PR URL; optional; the PR number that added the changeset.
+# If not present is automatically filled by the tooling finding the PR where this changelog fragment has been added.
+# NOTE: the tooling supports backports, so it's able to fill the original PR number instead of the backport PR number.
+# Please provide it if you are adding a fragment for a different PR.
+pr: https://github.com/elastic/elastic-agent/pull/4542
+
+# Issue URL; optional; the GitHub issue related to this changeset (either closes or is part of).
+# If not present is automatically filled by the tooling with the issue linked to the PR number.
+issue: https://github.com/elastic/elastic-agent/issues/4543

deploy/kubernetes/elastic-agent-managed-kubernetes.yaml

@@ -30,7 +30,7 @@ spec:
       dnsPolicy: ClusterFirstWithHostNet
       containers:
         - name: elastic-agent
-          image: docker.elastic.co/beats/elastic-agent:8.14.0
+          image: docker.elastic.co/beats/elastic-agent:8.15.0
           env:
             # Set to 1 for enrollment into Fleet server. If not set, Elastic Agent is run in standalone mode
             - name: FLEET_ENROLL

deploy/kubernetes/elastic-agent-standalone-kubernetes.yaml

@@ -698,13 +698,13 @@ spec:
       #      - -c
       #      - >-
       #        mkdir -p /etc/elastic-agent/inputs.d &&
-      #        wget -O - https://github.com/elastic/elastic-agent/archive/8.14.tar.gz | tar xz -C /etc/elastic-agent/inputs.d --strip=5 "elastic-agent-8.14/deploy/kubernetes/elastic-agent-standalone/templates.d"
+      #        wget -O - https://github.com/elastic/elastic-agent/archive/8.15.tar.gz | tar xz -C /etc/elastic-agent/inputs.d --strip=5 "elastic-agent-8.15/deploy/kubernetes/elastic-agent-standalone/templates.d"
       #    volumeMounts:
       #      - name: external-inputs
       #        mountPath: /etc/elastic-agent/inputs.d
       containers:
         - name: elastic-agent-standalone
-          image: docker.elastic.co/beats/elastic-agent:8.14.0
+          image: docker.elastic.co/beats/elastic-agent:8.15.0
           args: ["-c", "/etc/elastic-agent/agent.yml", "-e"]
           env:
             # The basic authentication username used to connect to Elasticsearch

internal/pkg/agent/application/coordinator/coordinator_test.go

@@ -61,6 +61,19 @@ var (
 			},
 		},
 	}
+	fakeIsolatedUnitsInputSpec = component.InputSpec{
+		Name:      "fake-isolated-units",
+		Platforms: []string{fmt.Sprintf("%s/%s", goruntime.GOOS, goruntime.GOARCH)},
+		Shippers:  []string{"fake-shipper"},
+		Command: &component.CommandSpec{
+			Timeouts: component.CommandTimeoutSpec{
+				Checkin: 30 * time.Second,
+				Restart: 10 * time.Millisecond, // quick restart during tests
+				Stop:    30 * time.Second,
+			},
+		},
+		IsolateUnits: true,
+	}
 	fakeShipperSpec = component.ShipperSpec{
 		Name:      "fake-shipper",
 		Platforms: []string{fmt.Sprintf("%s/%s", goruntime.GOOS, goruntime.GOARCH)},
@@ -547,6 +560,94 @@ func TestCoordinator_StateSubscribe(t *testing.T) {
 	require.NoError(t, err)
 }
 
+func TestCoordinator_StateSubscribeIsolatedUnits(t *testing.T) {
+	coordCh := make(chan error)
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	coord, cfgMgr, varsMgr := createCoordinator(t, ctx, WithComponentInputSpec(fakeIsolatedUnitsInputSpec))
+	go func() {
+		err := coord.Run(ctx)
+		if errors.Is(err, context.Canceled) {
+			// allowed error
+			err = nil
+		}
+		coordCh <- err
+	}()
+
+	resultChan := make(chan error)
+	go func() {
+		ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
+		defer cancel()
+
+		subChan := coord.StateSubscribe(ctx, 32)
+		for {
+			select {
+			case <-ctx.Done():
+				resultChan <- ctx.Err()
+				return
+			case state := <-subChan:
+				t.Logf("%+v", state)
+				if len(state.Components) == 3 {
+					compState0 := getComponentState(state.Components, "fake-isolated-units-default-fake-isolated-units-0")
+					compState1 := getComponentState(state.Components, "fake-isolated-units-default-fake-isolated-units-1")
+					if compState0 != nil && compState1 != nil {
+						unit0, ok0 := compState0.State.Units[runtime.ComponentUnitKey{UnitType: client.UnitTypeInput, UnitID: "fake-isolated-units-default-fake-isolated-units-0-unit"}]
+						unit1, ok1 := compState1.State.Units[runtime.ComponentUnitKey{UnitType: client.UnitTypeInput, UnitID: "fake-isolated-units-default-fake-isolated-units-1-unit"}]
+						if ok0 && ok1 {
+							if (unit0.State == client.UnitStateHealthy && unit0.Message == "Healthy From Fake Isolated Units 0 Config") &&
+								(unit1.State == client.UnitStateHealthy && unit1.Message == "Healthy From Fake Isolated Units 1 Config") {
+								resultChan <- nil
+								return
+							}
+						}
+					}
+				}
+			}
+		}
+	}()
+
+	// no vars used by the config
+	varsMgr.Vars(ctx, []*transpiler.Vars{{}})
+
+	// set the configuration to run a fake input
+	cfg, err := config.NewConfigFrom(map[string]interface{}{
+		"outputs": map[string]interface{}{
+			"default": map[string]interface{}{
+				"type": "fake-action-output",
+				"shipper": map[string]interface{}{
+					"enabled": true,
+				},
+			},
+		},
+		"inputs": []interface{}{
+			map[string]interface{}{
+				"id":         "fake-isolated-units-0",
+				"type":       "fake-isolated-units",
+				"use_output": "default",
+				"state":      client.UnitStateHealthy,
+				"message":    "Healthy From Fake Isolated Units 0 Config",
+			},
+			map[string]interface{}{
+				"id":         "fake-isolated-units-1",
+				"type":       "fake-isolated-units",
+				"use_output": "default",
+				"state":      client.UnitStateHealthy,
+				"message":    "Healthy From Fake Isolated Units 1 Config",
+			},
+		},
+	})
+	require.NoError(t, err)
+	cfgMgr.Config(ctx, cfg)
+
+	err = <-resultChan
+	require.NoError(t, err)
+	cancel()
+
+	err = <-coordCh
+	require.NoError(t, err)
+}
+
 func TestCollectManagerErrorsTimeout(t *testing.T) {
 	handlerChan, _, _, _, _ := setupManagerShutdownChannels(time.Millisecond)
 	// Don't send anything to the shutdown channels, causing a timeout
@@ -757,6 +858,7 @@ func TestCoordinator_UpgradeDetails(t *testing.T) {
 type createCoordinatorOpts struct {
 	managed        bool
 	upgradeManager UpgradeManager
+	compInputSpec  component.InputSpec
 }
 
 type CoordinatorOpt func(o *createCoordinatorOpts)
@@ -773,13 +875,21 @@ func WithUpgradeManager(upgradeManager UpgradeManager) CoordinatorOpt {
 	}
 }
 
+func WithComponentInputSpec(spec component.InputSpec) CoordinatorOpt {
+	return func(o *createCoordinatorOpts) {
+		o.compInputSpec = spec
+	}
+}
+
 // createCoordinator creates a coordinator that using a fake config manager and a fake vars manager.
 //
 // The runtime specifications is set up to use both the fake component and fake shipper.
 func createCoordinator(t *testing.T, ctx context.Context, opts ...CoordinatorOpt) (*Coordinator, *fakeConfigManager, *fakeVarsManager) {
 	t.Helper()
 
-	o := &createCoordinatorOpts{}
+	o := &createCoordinatorOpts{
+		compInputSpec: fakeInputSpec,
+	}
 	for _, opt := range opts {
 		opt(o)
 	}
@@ -793,7 +903,7 @@ func createCoordinator(t *testing.T, ctx context.Context, opts ...CoordinatorOpt
 		InputType:  "fake",
 		BinaryName: "",
 		BinaryPath: testBinary(t, "component"),
-		Spec:       fakeInputSpec,
+		Spec:       o.compInputSpec,
 	}
 	shipperSpec := component.ShipperRuntimeSpec{
 		ShipperType: "fake-shipper",

internal/pkg/composable/providers/kubernetesleaderelection/kubernetes_leaderelection.go

@@ -10,10 +10,12 @@ import (
 	"time"
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	k8sclient "k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/tools/leaderelection"
 	"k8s.io/client-go/tools/leaderelection/resourcelock"
 
 	"github.com/elastic/elastic-agent-autodiscover/kubernetes"
+
 	"github.com/elastic/elastic-agent/internal/pkg/agent/application/info"
 	"github.com/elastic/elastic-agent/internal/pkg/agent/errors"
 	"github.com/elastic/elastic-agent/internal/pkg/composable"
@@ -22,6 +24,8 @@ import (
 	"github.com/elastic/elastic-agent/pkg/core/logger"
 )
 
+const leaderElectorPrefix = "elastic-agent-leader-"
+
 func init() {
 	composable.Providers.MustAddContextProvider("kubernetes_leaderelection", ContextProviderBuilder)
 }
@@ -45,11 +49,15 @@ func ContextProviderBuilder(logger *logger.Logger, c *config.Config, managed boo
 	return &contextProvider{logger, &cfg, nil}, nil
 }
 
+// This is needed to overwrite the Kubernetes client for the tests
+var getK8sClientFunc = func(kubeconfig string, opt kubernetes.KubeClientOptions) (k8sclient.Interface, error) {
+	return kubernetes.GetKubernetesClient(kubeconfig, opt)
+}
+
 // Run runs the leaderelection provider.
 func (p *contextProvider) Run(ctx context.Context, comm corecomp.ContextProviderComm) error {
-	client, err := kubernetes.GetKubernetesClient(p.config.KubeConfig, p.config.KubeClientOptions)
+	client, err := getK8sClientFunc(p.config.KubeConfig, p.config.KubeClientOptions)
 	if err != nil {
-		// info only; return nil (do nothing)
 		p.logger.Debugf("Kubernetes leaderelection provider skipped, unable to connect: %s", err)
 		return nil
 	}
@@ -61,9 +69,9 @@ func (p *contextProvider) Run(ctx context.Context, comm corecomp.ContextProvider
 	var id string
 	podName, found := os.LookupEnv("POD_NAME")
 	if found {
-		id = "elastic-agent-leader-" + podName
+		id = leaderElectorPrefix + podName
 	} else {
-		id = "elastic-agent-leader-" + agentInfo.AgentID()
+		id = leaderElectorPrefix + agentInfo.AgentID()
 	}
 
 	ns, err := kubernetes.InClusterNamespace()
@@ -104,9 +112,14 @@ func (p *contextProvider) Run(ctx context.Context, comm corecomp.ContextProvider
 		p.logger.Errorf("error while creating Leader Elector: %v", err)
 	}
 	p.logger.Debugf("Starting Leader Elector")
-	le.Run(comm)
-	p.logger.Debugf("Stopped Leader Elector")
-	return comm.Err()
+
+	for {
+		le.Run(ctx)
+		if ctx.Err() != nil {
+			p.logger.Debugf("Stopped Leader Elector")
+			return comm.Err()
+		}
+	}
 }
 
 func (p *contextProvider) startLeading(comm corecomp.ContextProviderComm) {