Chapter 3. Configuring the Collector

OpenTelemetry Collector custom resource with an enabled OTLP Receiver

# ...
  config: |
    receivers:
      otlp:
        protocols:
          grpc:
            endpoint: 0.0.0.0:4317 1
            tls: 2
              ca_file: ca.pem
              cert_file: cert.pem
              key_file: key.pem
              client_ca_file: client.pem 3
              reload_interval: 1h 4
          http:
            endpoint: 0.0.0.0:4318 5
            tls: 6

    service:
      pipelines:
        traces:
          receivers: [otlp]
        metrics:
          receivers: [otlp]
# ...

OpenTelemetry Collector custom resource with an enabled Jaeger Receiver

# ...
  config: |
    receivers:
      jaeger:
        protocols:
          grpc:
            endpoint: 0.0.0.0:14250 1
          thrift_http:
            endpoint: 0.0.0.0:14268 2
          thrift_compact:
            endpoint: 0.0.0.0:6831 3
          thrift_binary:
            endpoint: 0.0.0.0:6832 4
          tls: 5

    service:
      pipelines:
        traces:
          receivers: [jaeger]
# ...

OpenTelemetry Collector custom resource with an enabled Host Metrics Receiver

apiVersion: v1
kind: ServiceAccount
metadata:
  name: otel-hostfs-daemonset
  namespace: <namespace>
# ...
---
apiVersion: security.openshift.io/v1
kind: SecurityContextConstraints
allowHostDirVolumePlugin: true
allowHostIPC: false
allowHostNetwork: false
allowHostPID: true
allowHostPorts: false
allowPrivilegeEscalation: true
allowPrivilegedContainer: true
allowedCapabilities: null
defaultAddCapabilities:
- SYS_ADMIN
fsGroup:
  type: RunAsAny
groups: []
metadata:
  name: otel-hostmetrics
readOnlyRootFilesystem: true
runAsUser:
  type: RunAsAny
seLinuxContext:
  type: RunAsAny
supplementalGroups:
  type: RunAsAny
users:
- system:serviceaccount:<namespace>:otel-hostfs-daemonset
volumes:
- configMap
- emptyDir
- hostPath
- projected
# ...
---
apiVersion: opentelemetry.io/v1alpha1
kind: OpenTelemetryCollector
metadata:
  name: otel
  namespace: <namespace>
spec:
  serviceAccount: otel-hostfs-daemonset
  mode: daemonset
  volumeMounts:
    - mountPath: /hostfs
      name: host
      readOnly: true
  volumes:
    - hostPath:
        path: /
      name: host
  config: |
    receivers:
      hostmetrics:
        collection_interval: 10s 1
        initial_delay: 1s 2
        root_path: / 3
        scrapers: 4
          cpu:
          memory:
          disk:
    service:
      pipelines:
        metrics:
          receivers: [hostmetrics]
# ...

OpenTelemetry Collector custom resource with an enabled Kubernetes Objects Receiver

apiVersion: v1
kind: ServiceAccount
metadata:
  name: otel-k8sobj
  namespace: <namespace>
# ...
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: otel-k8sobj
  namespace: <namespace>
rules:
- apiGroups:
  - ""
  resources:
  - events
  - pods
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - "events.k8s.io"
  resources:
  - events
  verbs:
  - watch
  - list
# ...
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: otel-k8sobj
subjects:
  - kind: ServiceAccount
    name: otel-k8sobj
    namespace: <namespace>
roleRef:
  kind: ClusterRole
  name: otel-k8sobj
  apiGroup: rbac.authorization.k8s.io
# ...
---
apiVersion: opentelemetry.io/v1alpha1
kind: OpenTelemetryCollector
metadata:
  name: otel-k8s-obj
  namespace: <namespace>
spec:
  serviceAccount: otel-k8sobj
  image: ghcr.io/os-observability/redhat-opentelemetry-collector/redhat-opentelemetry-collector:main
  mode: deployment
  config: |
    receivers:
      k8sobjects:
        auth_type: serviceAccount
        objects:
          - name: pods 1
            mode: pull 2
            interval: 30s 3
            label_selector: 4
            field_selector: 5
            namespaces: [<namespace>,...] 6
          - name: events
            mode: watch
    exporters:
      debug:
    service:
      pipelines:
        logs:
          receivers: [k8sobjects]
          exporters: [debug]
# ...

OpenTelemetry Collector custom resource with an enabled Kubelet Stats Receiver

# ...
config: |
  receivers:
    kubeletstats:
      collection_interval: 20s
      auth_type: "serviceAccount"
      endpoint: "https://${env:K8S_NODE_NAME}:10250"
      insecure_skip_verify: true
  service:
    pipelines:
      metrics:
        receivers: [kubeletstats]
env:
  - name: K8S_NODE_NAME 1
    valueFrom:
      fieldRef:
        fieldPath: spec.nodeName
# ...

Permissions required by the service account

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: otel-collector
rules:
  - apiGroups: ['']
    resources: ['nodes/stats']
    verbs: ['get', 'watch', 'list']
  - apiGroups: [""]
    resources: ["nodes/proxy"] 1
    verbs: ["get"]
# ...

OpenTelemetry Collector custom resource with an enabled Prometheus Receiver

# ...
  config: |
    receivers:
        prometheus:
          config:
            scrape_configs: 1
              - job_name: 'my-app'  2
                scrape_interval: 5s 3
                static_configs:
                  - targets: ['my-app.example.svc.cluster.local:8888'] 4
    service:
      pipelines:
        metrics:
          receivers: [prometheus]
# ...

OpenTelemetry Collector custom resource with the enabled Zipkin Receiver

# ...
  config: |
    receivers:
      zipkin:
        endpoint: 0.0.0.0:9411 1
        tls: 2
    service:
      pipelines:
        traces:
          receivers: [zipkin]
# ...

OpenTelemetry Collector custom resource with the enabled Kafka Receiver

# ...
  config: |
    receivers:
      kafka:
        brokers: ["localhost:9092"] 1
        protocol_version: 2.0.0 2
        topic: otlp_spans 3
        auth:
          plain_text: 4
            username: example
            password: example
          tls: 5
            ca_file: ca.pem
            cert_file: cert.pem
            key_file: key.pem
            insecure: false 6
            server_name_override: kafka.example.corp 7
    service:
      pipelines:
        traces:
          receivers: [kafka]
# ...

OpenTelemetry Collector custom resource with the enabled Kubernetes Cluster Receiver

# ...
  receivers:
    k8s_cluster:
      distribution: openshift
      collection_interval: 10s
  exporters:
    debug:
  service:
    pipelines:
      metrics:
        receivers: [k8s_cluster]
        exporters: [debug]
      logs/entity_events:
        receivers: [k8s_cluster]
        exporters: [debug]
# ...

ServiceAccount object

apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    app: otelcontribcol
  name: otelcontribcol
# ...

RBAC rules for the ClusterRole object

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: otelcontribcol
  labels:
    app: otelcontribcol
rules:
- apiGroups:
  - quota.openshift.io
  resources:
  - clusterresourcequotas
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - ""
  resources:
  - events
  - namespaces
  - namespaces/status
  - nodes
  - nodes/spec
  - pods
  - pods/status
  - replicationcontrollers
  - replicationcontrollers/status
  - resourcequotas
  - services
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - apps
  resources:
  - daemonsets
  - deployments
  - replicasets
  - statefulsets
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - extensions
  resources:
  - daemonsets
  - deployments
  - replicasets
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - batch
  resources:
  - jobs
  - cronjobs
  verbs:
  - get
  - list
  - watch
- apiGroups:
    - autoscaling
  resources:
    - horizontalpodautoscalers
  verbs:
    - get
    - list
    - watch
# ...

ClusterRoleBinding object

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: otelcontribcol
  labels:
    app: otelcontribcol
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: otelcontribcol
subjects:
- kind: ServiceAccount
  name: otelcontribcol
  namespace: default
# ...

OpenTelemetry Collector custom resource with the enabled OpenCensus Receiver

# ...
  config: |
    receivers:
      opencensus:
        endpoint: 0.0.0.0:9411 1
        tls: 2
        cors_allowed_origins: 3
          - https://*.<example>.com
    service:
      pipelines:
        traces:
          receivers: [opencensus]
# ...

OpenTelemetry Collector custom resource with the enabled Filelog Receiver that tails a text file

# ...
receivers:
  filelog:
    include: [ /simple.log ] 1
    operators: 2
      - type: regex_parser
        regex: '^(?P<time>\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}) (?P<sev>[A-Z]*) (?P<msg>.*)$'
        timestamp:
          parse_from: attributes.time
          layout: '%Y-%m-%d %H:%M:%S'
        severity:
          parse_from: attributes.sev
# ...

OpenTelemetry Collector custom resource with the enabled Journald Receiver

apiVersion: v1
kind: Namespace
metadata:
  name: otel-journald
  labels:
    security.openshift.io/scc.podSecurityLabelSync: "false"
    pod-security.kubernetes.io/enforce: "privileged"
    pod-security.kubernetes.io/audit: "privileged"
    pod-security.kubernetes.io/warn: "privileged"
# ...
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: privileged-sa
  namespace: otel-journald
# ...
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: otel-journald-binding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:openshift:scc:privileged
subjects:
- kind: ServiceAccount
  name: privileged-sa
  namespace: otel-journald
# ...
---
apiVersion: opentelemetry.io/v1alpha1
kind: OpenTelemetryCollector
metadata:
  name: otel-journald-logs
  namespace: otel-journald
spec:
  mode: daemonset
  serviceAccount: privileged-sa
  securityContext:
    allowPrivilegeEscalation: false
    capabilities:
      drop:
      - CHOWN
      - DAC_OVERRIDE
      - FOWNER
      - FSETID
      - KILL
      - NET_BIND_SERVICE
      - SETGID
      - SETPCAP
      - SETUID
    readOnlyRootFilesystem: true
    seLinuxOptions:
      type: spc_t
    seccompProfile:
      type: RuntimeDefault
  config: |
    receivers:
      journald:
        files: /var/log/journal/*/*
        priority: info 1
        units: 2
          - kubelet
          - crio
          - init.scope
          - dnsmasq
        all: true 3
        retry_on_failure:
          enabled: true 4
          initial_interval: 1s 5
          max_interval: 30s 6
          max_elapsed_time: 5m 7
    processors:
    exporters:
      debug:
        verbosity: detailed
    service:
      pipelines:
        logs:
          receivers: [journald]
          exporters: [debug]
  volumeMounts:
  - name: journal-logs
    mountPath: /var/log/journal/
    readOnly: true
  volumes:
  - name: journal-logs
    hostPath:
      path: /var/log/journal
  tolerations:
  - key: node-role.kubernetes.io/master
    operator: Exists
    effect: NoSchedule
# ...

OpenShift Container Platform permissions required for the Kubernetes Events Receiver

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: otel-collector
  labels:
    app: otel-collector
rules:
- apiGroups:
  - ""
  resources:
  - events
  - namespaces
  - namespaces/status
  - nodes
  - nodes/spec
  - pods
  - pods/status
  - replicationcontrollers
  - replicationcontrollers/status
  - resourcequotas
  - services
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - apps
  resources:
  - daemonsets
  - deployments
  - replicasets
  - statefulsets
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - extensions
  resources:
  - daemonsets
  - deployments
  - replicasets
  verbs:
  - get
  - list
  - watch
- apiGroups:
  - batch
  resources:
  - jobs
  - cronjobs
  verbs:
  - get
  - list
  - watch
- apiGroups:
    - autoscaling
  resources:
    - horizontalpodautoscalers
  verbs:
    - get
    - list
    - watch
# ...

OpenTelemetry Collector custom resource with the enabled Kubernetes Event Receiver

# ...
  serviceAccount: otel-collector 1
  config: |
    receivers:
      k8s_events:
        namespaces: [project1, project2] 2
    service:
      pipelines:
        logs:
          receivers: [k8s_events]
# ...

Example of the OpenTelemetry Collector custom resource when using the Batch Processor

# ...
  config: |
    processor:
      batch:
        timeout: 5s
        send_batch_max_size: 10000
    service:
      pipelines:
        traces:
          processors: [batch]
        metrics:
          processors: [batch]
# ...

Example of the OpenTelemetry Collector custom resource when using the Memory Limiter Processor

# ...
  config: |
    processor:
      memory_limiter:
        check_interval: 1s
        limit_mib: 4000
        spike_limit_mib: 800
    service:
      pipelines:
        traces:
          processors: [batch]
        metrics:
          processors: [batch]
# ...

OpenShift Container Platform permissions required for the Resource Detection Processor

kind: ClusterRole
metadata:
  name: otel-collector
rules:
- apiGroups: ["config.openshift.io"]
  resources: ["infrastructures", "infrastructures/status"]
  verbs: ["get", "watch", "list"]
# ...

OpenTelemetry Collector using the Resource Detection Processor

# ...
  config: |
    processor:
      resourcedetection:
        detectors: [openshift]
        override: true
    service:
      pipelines:
        traces:
          processors: [resourcedetection]
        metrics:
          processors: [resourcedetection]
# ...

OpenTelemetry Collector using the Resource Detection Processor with an environment variable detector

# ...
  config: |
    processors:
      resourcedetection/env:
        detectors: [env] 1
        timeout: 2s
        override: false
# ...

OpenTelemetry Collector using the Attributes Processor

# ...
  config: |
    processors:
      attributes/example:
        actions:
          - key: db.table
            action: delete
          - key: redacted_span
            value: true
            action: upsert
          - key: copy_key
            from_attribute: key_original
            action: update
          - key: account_id
            value: 2245
            action: insert
          - key: account_password
            action: delete
          - key: account_email
            action: hash
          - key: http.status_code
            action: convert
            converted_type: int
# ...

OpenTelemetry Collector using the Resource Detection Processor

# ...
  config: |
    processor:
      attributes:
      - key: cloud.availability_zone
        value: "zone-1"
        action: upsert
      - key: k8s.cluster.name
        from_attribute: k8s-cluster
        action: insert
      - key: redundant-attribute
        action: delete
# ...

OpenTelemetry Collector using the Span Processor for renaming a span

# ...
  config: |
    processor:
      span:
        name:
          from_attributes: [<key1>, <key2>, ...] 1
          separator: <value> 2
# ...

OpenTelemetry Collector using the Span Processor for extracting attributes from a span name

# ...
  config: |
    processor:
      span/to_attributes:
        name:
          to_attributes:
            rules:
              - ^\/api\/v1\/document\/(?P<documentId>.*)\/update$ 1
# ...

OpenTelemetry Collector using the Span Processor for status change

# ...
  config: |
    processor:
      span/set_status:
        status:
          code: Error
          description: "<error_description>"
# ...

Minimum OpenShift Container Platform permissions required for the Kubernetes Attributes Processor

kind: ClusterRole
metadata:
  name: otel-collector
rules:
  - apiGroups: ['']
    resources: ['pods', 'namespaces']
    verbs: ['get', 'watch', 'list']
# ...

OpenTelemetry Collector using the Kubernetes Attributes Processor

# ...
  config: |
    processors:
         k8sattributes:
             filter:
                 node_from_env_var: KUBE_NODE_NAME
# ...

OpenTelemetry Collector custom resource with an enabled OTLP Exporter

# ...
config: |
  processors:
    filter/ottl:
      error_mode: ignore 1
      traces:
        span:
          - 'attributes["container.name"] == "app_container_1"' 2
          - 'resource.attributes["host.name"] == "localhost"' 3
# ...

OpenTelemetry Collector custom resource with an enabled OTLP Exporter

# ...
config: |
  processors:
    routing:
      from_attribute: X-Tenant 1
      default_exporters: 2
      - jaeger
      table: 3
      - value: acme
        exporters: [jaeger/acme]
  exporters:
    jaeger:
      endpoint: localhost:14250
    jaeger/acme:
      endpoint: localhost:24250
# ...

Example of an OpenTelemetry Collector custom resource with an enabled Cumulative-to-Delta Processor

# ...
config: |
  processors:
    cumulativetodelta:
      include: 1
        match_type: strict 2
        metrics: 3
        - <metric_1_name>
        - <metric_2_name>
      exclude: 4
        match_type: regexp
        metrics:
        - "<regular_expression_for_metric_names>"
# ...

Configuration summary

# ...
config: |
  processors:
    transform:
      error_mode: ignore 1
      <trace|metric|log>_statements: 2
        - context: <string> 3
          conditions:  4
            - <string>
            - <string>
          statements: 5
            - <string>
            - <string>
            - <string>
        - context: <string>
          statements:
            - <string>
            - <string>
            - <string>
# ...

Configuration example

# ...
config: |
  transform:
    error_mode: ignore
    trace_statements: 1
      - context: resource
        statements:
          - keep_keys(attributes, ["service.name", "service.namespace", "cloud.region", "process.command_line"]) 2
          - replace_pattern(attributes["process.command_line"], "password\\=[^\\s]*(\\s?)", "password=***") 3
          - limit(attributes, 100, [])
          - truncate_all(attributes, 4096)
      - context: span 4
        statements:
          - set(status.code, 1) where attributes["http.path"] == "/health"
          - set(name, attributes["http.route"])
          - replace_match(attributes["http.target"], "/user/*/list/*", "/user/{userId}/list/{listId}")
          - limit(attributes, 100, [])
          - truncate_all(attributes, 4096)
# ...

OpenTelemetry Collector custom resource with an enabled OTLP Exporter

# ...
  config: |
    exporters:
      otlp:
        endpoint: tempo-ingester:4317 1
        tls: 2
          ca_file: ca.pem
          cert_file: cert.pem
          key_file: key.pem
          insecure: false 3
          insecure_skip_verify: false # 4
          reload_interval: 1h 5
          server_name_override: <name> 6
        headers: 7
          X-Scope-OrgID: "dev"
    service:
      pipelines:
        traces:
          exporters: [otlp]
        metrics:
          exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with an enabled OTLP Exporter

# ...
  config: |
    exporters:
      otlphttp:
        endpoint: http://tempo-ingester:4318 1
        tls: 2
        headers: 3
          X-Scope-OrgID: "dev"
        disable_keep_alives: false 4

    service:
      pipelines:
        traces:
          exporters: [otlphttp]
        metrics:
          exporters: [otlphttp]
# ...

OpenTelemetry Collector custom resource with an enabled Debug Exporter

# ...
  config: |
    exporters:
      debug:
        verbosity: detailed 1
        sampling_initial: 5 2
        sampling_thereafter: 200 3
        use_internal_logger: true 4
    service:
      pipelines:
        traces:
          exporters: [debug]
        metrics:
          exporters: [debug]
# ...

OpenTelemetry Collector custom resource with an enabled Load Balancing Exporter

# ...
  config: |
    exporters:
      loadbalancing:
        routing_key: "service" 1
        protocol:
          otlp: 2
            timeout: 1s
        resolver: 3
          static: 4
            hostnames:
            - backend-1:4317
            - backend-2:4317
          dns: 5
            hostname: otelcol-headless.observability.svc.cluster.local
          k8s: 6
            service: lb-svc.kube-public
            ports:
              - 15317
              - 16317
# ...

OpenTelemetry Collector custom resource with an enabled Prometheus Exporter

# ...
  config: |
    exporters:
      prometheus:
        endpoint: 0.0.0.0:8889 1
        tls: 2
          ca_file: ca.pem
          cert_file: cert.pem
          key_file: key.pem
        namespace: prefix 3
        const_labels: 4
          label1: value1
        enable_open_metrics: true 5
        resource_to_telemetry_conversion: 6
          enabled: true
        metric_expiration: 180m 7
        add_metric_suffixes: false 8
    service:
      pipelines:
        metrics:
          exporters: [prometheus]
# ...

OpenTelemetry Collector custom resource with an enabled Prometheus Remote Write Exporter

# ...
  config: |
    exporters:
      prometheusremotewrite:
        endpoint: "https://my-prometheus:7900/api/v1/push" 1
        tls: 2
          ca_file: ca.pem
          cert_file: cert.pem
          key_file: key.pem
        target_info: true 3
        export_created_metric: true 4
        max_batch_size_bytes: 3000000 5
    service:
      pipelines:
        metrics:
          exporters: [prometheusremotewrite]
# ...

OpenTelemetry Collector custom resource with an enabled Kafka Exporter

# ...
  config: |
    exporters:
      kafka:
        brokers: ["localhost:9092"] 1
        protocol_version: 2.0.0 2
        topic: otlp_spans 3
        auth:
          plain_text: 4
            username: example
            password: example
          tls: 5
            ca_file: ca.pem
            cert_file: cert.pem
            key_file: key.pem
            insecure: false 6
            server_name_override: kafka.example.corp 7
    service:
      pipelines:
        traces:
          exporters: [kafka]
# ...

OpenTelemetry Collector custom resource with an enabled Routing Connector

  config: |
    connectors:
      routing:
        table: 1
          - statement: route() where attributes["X-Tenant"] == "dev" 2
            pipelines: [traces/dev] 3
          - statement: route() where attributes["X-Tenant"] == "prod"
            pipelines: [traces/prod]
        default_pipelines: [traces/dev] 4
        error_mode: ignore 5
        match_once: false 6
    service:
      pipelines:
        traces/in:
          receivers: [otlp]
          exporters: [routing]
        traces/dev:
          receivers: [routing]
          exporters: [otlp/dev]
        traces/prod:
          receivers: [routing]
          exporters: [otlp/prod]

OpenTelemetry Collector custom resource with an enabled Forward Connector

# ...
receivers:
  otlp:
    protocols:
      grpc:
  jaeger:
    protocols:
      grpc:
processors:
  batch:
exporters:
  otlp:
    endpoint: tempo-simplest-distributor:4317
    tls:
      insecure: true
connectors:
  forward:
service:
  pipelines:
    traces/regiona:
      receivers: [otlp]
      processors: []
      exporters: [forward]
    traces/regionb:
      receivers: [jaeger]
      processors: []
      exporters: [forward]
    traces:
      receivers: [forward]
      processors: [batch]
      exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with an enabled Spanmetrics Connector

# ...
  config: |
    connectors:
      spanmetrics:
        metrics_flush_interval: 15s 1
    service:
      pipelines:
        traces:
          exporters: [spanmetrics]
        metrics:
          receivers: [spanmetrics]
# ...

OpenTelemetry Collector custom resource with client and server authentication configured for the BearerTokenAuth Extension

# ...
  config: |
    extensions:
      bearertokenauth:
        scheme: "Bearer" 1
        token: "<token>" 2
        filename: "<token_file>" 3

    receivers:
      otlp:
        protocols:
          http:
            auth:
              authenticator: bearertokenauth 4
    exporters:
      otlp:
        auth:
          authenticator: bearertokenauth 5

    service:
      extensions: [bearertokenauth]
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with client authentication configured for the OAuth2Client Extension

# ...
  config: |
    extensions:
      oauth2client:
        client_id: <client_id> 1
        client_secret: <client_secret> 2
        endpoint_params: 3
          audience: <audience>
        token_url: https://example.com/oauth2/default/v1/token 4
        scopes: ["api.metrics"] 5
        # tls settings for the token client
        tls: 6
          insecure: true 7
          ca_file: /var/lib/mycert.pem 8
          cert_file: <cert_file> 9
          key_file: <key_file> 10
        timeout: 2s 11

    receivers:
      otlp:
        protocols:
          http: {}

    exporters:
      otlp:
        auth:
          authenticator: oauth2client 12

    service:
      extensions: [oauth2client]
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with a configured File Storage Extension that persists an OTLP sending queue

# ...
  config: |
    extensions:
      file_storage/all_settings:
        directory: /var/lib/otelcol/mydir 1
        timeout: 1s 2
        compaction:
          on_start: true 3
          directory: /tmp/ 4
          max_transaction_size: 65_536 5
        fsync: false 6

    exporters:
      otlp:
        sending_queue:
          storage: file_storage/all_settings 7

    service:
      extensions: [file_storage/all_settings] 8
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with the configured OIDC Auth Extension

# ...
  config: |
    extensions:
      oidc:
        attribute: authorization 1
        issuer_url: https://example.com/auth/realms/opentelemetry 2
        issuer_ca_path: /var/run/tls/issuer.pem 3
        audience: otel-collector 4
        username_claim: email 5
    receivers:
      otlp:
        protocols:
          grpc:
            auth:
              authenticator: oidc
    exporters:
      otlp:
        endpoint: <endpoint>
    service:
      extensions: [oidc]
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with a configured Jaeger Remote Sampling Extension

# ...
  config: |
    extensions:
      jaegerremotesampling:
        source:
          reload_interval: 30s 1
          remote:
            endpoint: jaeger-collector:14250 2
          file: /etc/otelcol/sampling_strategies.json 3

    receivers:
      otlp:
        protocols:
          http: {}

    exporters:
      otlp:

    service:
      extensions: [jaegerremotesampling]
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [otlp]
# ...

Example of a Jaeger Remote Sampling strategy file

{
  "service_strategies": [
    {
      "service": "foo",
      "type": "probabilistic",
      "param": 0.8,
      "operation_strategies": [
        {
          "operation": "op1",
          "type": "probabilistic",
          "param": 0.2
        },
        {
          "operation": "op2",
          "type": "probabilistic",
          "param": 0.4
        }
      ]
    },
    {
      "service": "bar",
      "type": "ratelimiting",
      "param": 5
    }
  ],
  "default_strategy": {
    "type": "probabilistic",
    "param": 0.5,
    "operation_strategies": [
      {
        "operation": "/health",
        "type": "probabilistic",
        "param": 0.0
      },
      {
        "operation": "/metrics",
        "type": "probabilistic",
        "param": 0.0
      }
    ]
  }
}

OpenTelemetry Collector custom resource with the configured Performance Profiler Extension

# ...
  config: |
    extensions:
      pprof:
        endpoint: localhost:1777 1
        block_profile_fraction: 0 2
        mutex_profile_fraction: 0 3
        save_to_file: test.pprof 4

    receivers:
      otlp:
        protocols:
          http: {}

    exporters:
      otlp:

    service:
      extensions: [pprof]
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with the configured Health Check Extension

# ...
  config: |
    extensions:
      health_check:
        endpoint: "0.0.0.0:13133" 1
        tls: 2
          ca_file: "/path/to/ca.crt"
          cert_file: "/path/to/cert.crt"
          key_file: "/path/to/key.key"
        path: "/health/status" 3
        check_collector_pipeline: 4
          enabled: true 5
          interval: "5m" 6
          exporter_failure_threshold: 5 7

    receivers:
      otlp:
        protocols:
          http: {}

    exporters:
      otlp:

    service:
      extensions: [health_check]
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with the configured Memory Ballast Extension

# ...
  config: |
    extensions:
      memory_ballast:
        size_mib: 64 1
        size_in_percentage: 20 2

    receivers:
      otlp:
        protocols:
          http: {}

    exporters:
      otlp:

    service:
      extensions: [memory_ballast]
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [otlp]
# ...

OpenTelemetry Collector custom resource with the configured zPages Extension

# ...
  config: |
    extensions:
      zpages:
        endpoint: "localhost:55679" 1

    receivers:
      otlp:
        protocols:
          http: {}
    exporters:
      debug:

    service:
      extensions: [zpages]
      pipelines:
        traces:
          receivers: [otlp]
          exporters: [debug]
# ...