Chapter 7. Forwarding telemetry data You can use the OpenTelemetry Collector to forward your telemetry data. 7.1. Forwarding traces to a TempoStack instance To configure forwarding traces to a TempoStack instance, you can deploy and configure the OpenTelemetry Collector. You can deploy the OpenTelemetry Collector in the deployment mode by using the specified processors, receivers, and exporters. For other modes, see the OpenTelemetry Collector documentation linked in Additional resources . Prerequisites The Red Hat build of OpenTelemetry Operator is installed. The Tempo Operator is installed. A TempoStack instance is deployed on the cluster. Procedure Create a service account for the OpenTelemetry Collector. Example ServiceAccount apiVersion: v1 kind: ServiceAccount metadata: name: otel-collector-deployment Create a cluster role for the service account. Example ClusterRole apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: otel-collector rules: 1 2 - apiGroups: ["", "config.openshift.io"] resources: ["pods", "namespaces", "infrastructures", "infrastructures/status"] verbs: ["get", "watch", "list"] 1 The k8sattributesprocessor requires permissions for pods and namespaces resources. 2 The resourcedetectionprocessor requires permissions for infrastructures and status. Bind the cluster role to the service account. Example ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: otel-collector subjects: - kind: ServiceAccount name: otel-collector-deployment namespace: otel-collector-example roleRef: kind: ClusterRole name: otel-collector apiGroup: rbac.authorization.k8s.io Create the YAML file to define the OpenTelemetryCollector custom resource (CR). Example OpenTelemetryCollector apiVersion: opentelemetry.io/v1beta1 kind: OpenTelemetryCollector metadata: name: otel spec: mode: deployment serviceAccount: otel-collector-deployment config: receivers: jaeger: protocols: grpc: {} thrift_binary: {} thrift_compact: {} thrift_http: {} opencensus: {} otlp: protocols: grpc: {} http: {} zipkin: {} processors: batch: {} k8sattributes: {} memory_limiter: check_interval: 1s limit_percentage: 50 spike_limit_percentage: 30 resourcedetection: detectors: [openshift] exporters: otlp: endpoint: "tempo-simplest-distributor:4317" 1 tls: insecure: true service: pipelines: traces: receivers: [jaeger, opencensus, otlp, zipkin] 2 processors: [memory_limiter, k8sattributes, resourcedetection, batch] exporters: [otlp] 1 The Collector exporter is configured to export OTLP and points to the Tempo distributor endpoint, "tempo-simplest-distributor:4317" in this example, which is already created. 2 The Collector is configured with a receiver for Jaeger traces, OpenCensus traces over the OpenCensus protocol, Zipkin traces over the Zipkin protocol, and OTLP traces over the gRPC protocol. Tip You can deploy telemetrygen as a test: apiVersion: batch/v1 kind: Job metadata: name: telemetrygen spec: template: spec: containers: - name: telemetrygen image: ghcr.io/open-telemetry/opentelemetry-collector-contrib/telemetrygen:latest args: - traces - --otlp-endpoint=otel-collector:4317 - --otlp-insecure - --duration=30s - --workers=1 restartPolicy: Never backoffLimit: 4 Additional resources OpenTelemetry Collector documentation Deployment examples on GitHub 7.2. Forwarding logs to a LokiStack instance You can deploy the OpenTelemetry Collector to forward logs to a LokiStack instance. Prerequisites The Red Hat build of OpenTelemetry Operator is installed. The Loki Operator is installed. A supported LokiStack instance is deployed on the cluster. Procedure Create a service account for the OpenTelemetry Collector. Example ServiceAccount object apiVersion: v1 kind: ServiceAccount metadata: name: otel-collector-deployment namespace: openshift-logging Create a cluster role that grants the Collector's service account the permissions to push logs to the LokiStack application tenant. Example ClusterRole object apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: otel-collector-logs-writer rules: - apiGroups: ["loki.grafana.com"] resourceNames: ["logs"] resources: ["application"] verbs: ["create"] - apiGroups: [""] resources: ["pods", "namespaces", "nodes"] verbs: ["get", "watch", "list"] - apiGroups: ["apps"] resources: ["replicasets"] verbs: ["get", "list", "watch"] - apiGroups: ["extensions"] resources: ["replicasets"] verbs: ["get", "list", "watch"] Bind the cluster role to the service account. Example ClusterRoleBinding object apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: otel-collector-logs-writer roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: otel-collector-logs-writer subjects: - kind: ServiceAccount name: otel-collector-deployment namespace: openshift-logging Create an OpenTelemetryCollector custom resource (CR) object. Example OpenTelemetryCollector CR object apiVersion: opentelemetry.io/v1beta1 kind: OpenTelemetryCollector metadata: name: otel namespace: openshift-logging spec: serviceAccount: otel-collector-deployment config: extensions: bearertokenauth: filename: "/var/run/secrets/kubernetes.io/serviceaccount/token" receivers: otlp: protocols: grpc: {} http: {} processors: k8sattributes: {} resource: attributes: 1 - key: kubernetes.namespace_name from_attribute: k8s.namespace.name action: upsert - key: kubernetes.pod_name from_attribute: k8s.pod.name action: upsert - key: kubernetes.container_name from_attribute: k8s.container.name action: upsert - key: log_type value: application action: upsert transform: log_statements: - context: log statements: - set(attributes["level"], ConvertCase(severity_text, "lower")) exporters: otlphttp: endpoint: https://logging-loki-gateway-http.openshift-logging.svc.cluster.local:8080/api/logs/v1/application/otlp encoding: json tls: ca_file: "/var/run/secrets/kubernetes.io/serviceaccount/service-ca.crt" auth: authenticator: bearertokenauth debug: verbosity: detailed service: extensions: [bearertokenauth] 2 pipelines: logs: receivers: [otlp] processors: [k8sattributes, transform, resource] exporters: [otlphttp] 3 logs/test: receivers: [otlp] processors: [] exporters: [debug] 1 Provides the following resource attributes to be used by the web console: kubernetes.namespace_name , kubernetes.pod_name , kubernetes.container_name , and log_type . 2 Enables the BearerTokenAuth Extension that is required by the OTLP HTTP Exporter. 3 Enables the OTLP HTTP Exporter to export logs from the Collector. Tip You can deploy telemetrygen as a test: apiVersion: batch/v1 kind: Job metadata: name: telemetrygen spec: template: spec: containers: - name: telemetrygen image: ghcr.io/open-telemetry/opentelemetry-collector-contrib/telemetrygen:v0.106.1 args: - logs - --otlp-endpoint=otel-collector.openshift-logging.svc.cluster.local:4317 - --otlp-insecure - --duration=180s - --workers=1 - --logs=10 - --otlp-attributes=k8s.container.name="telemetrygen" restartPolicy: Never backoffLimit: 4 Additional resources Installing LokiStack log storage

Commands:
apiVersion: v1 kind: ServiceAccount metadata: name: otel-collector-deployment
apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: otel-collector rules: 1 2 - apiGroups: ["", "config.openshift.io"] resources: ["pods", "namespaces", "infrastructures", "infrastructures/status"] verbs: ["get", "watch", "list"]
apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: otel-collector subjects: - kind: ServiceAccount name: otel-collector-deployment namespace: otel-collector-example roleRef: kind: ClusterRole name: otel-collector apiGroup: rbac.authorization.k8s.io
apiVersion: opentelemetry.io/v1beta1 kind: OpenTelemetryCollector metadata: name: otel spec: mode: deployment serviceAccount: otel-collector-deployment config: receivers: jaeger: protocols: grpc: {} thrift_binary: {} thrift_compact: {} thrift_http: {} opencensus: {} otlp: protocols: grpc: {} http: {} zipkin: {} processors: batch: {} k8sattributes: {} memory_limiter: check_interval: 1s limit_percentage: 50 spike_limit_percentage: 30 resourcedetection: detectors: [openshift] exporters: otlp: endpoint: "tempo-simplest-distributor:4317" 1 tls: insecure: true service: pipelines: traces: receivers: [jaeger, opencensus, otlp, zipkin] 2 processors: [memory_limiter, k8sattributes, resourcedetection, batch] exporters: [otlp]
apiVersion: batch/v1 kind: Job metadata: name: telemetrygen spec: template: spec: containers: - name: telemetrygen image: ghcr.io/open-telemetry/opentelemetry-collector-contrib/telemetrygen:latest args: - traces - --otlp-endpoint=otel-collector:4317 - --otlp-insecure - --duration=30s - --workers=1 restartPolicy: Never backoffLimit: 4
apiVersion: v1 kind: ServiceAccount metadata: name: otel-collector-deployment namespace: openshift-logging
apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRole metadata: name: otel-collector-logs-writer rules: - apiGroups: ["loki.grafana.com"] resourceNames: ["logs"] resources: ["application"] verbs: ["create"] - apiGroups: [""] resources: ["pods", "namespaces", "nodes"] verbs: ["get", "watch", "list"] - apiGroups: ["apps"] resources: ["replicasets"] verbs: ["get", "list", "watch"] - apiGroups: ["extensions"] resources: ["replicasets"] verbs: ["get", "list", "watch"]
apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: otel-collector-logs-writer roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: otel-collector-logs-writer subjects: - kind: ServiceAccount name: otel-collector-deployment namespace: openshift-logging
apiVersion: opentelemetry.io/v1beta1 kind: OpenTelemetryCollector metadata: name: otel namespace: openshift-logging spec: serviceAccount: otel-collector-deployment config: extensions: bearertokenauth: filename: "/var/run/secrets/kubernetes.io/serviceaccount/token" receivers: otlp: protocols: grpc: {} http: {} processors: k8sattributes: {} resource: attributes: 1 - key: kubernetes.namespace_name from_attribute: k8s.namespace.name action: upsert - key: kubernetes.pod_name from_attribute: k8s.pod.name action: upsert - key: kubernetes.container_name from_attribute: k8s.container.name action: upsert - key: log_type value: application action: upsert transform: log_statements: - context: log statements: - set(attributes["level"], ConvertCase(severity_text, "lower")) exporters: otlphttp: endpoint: https://logging-loki-gateway-http.openshift-logging.svc.cluster.local:8080/api/logs/v1/application/otlp encoding: json tls: ca_file: "/var/run/secrets/kubernetes.io/serviceaccount/service-ca.crt" auth: authenticator: bearertokenauth debug: verbosity: detailed service: extensions: [bearertokenauth] 2 pipelines: logs: receivers: [otlp] processors: [k8sattributes, transform, resource] exporters: [otlphttp] 3 logs/test: receivers: [otlp] processors: [] exporters: [debug]
apiVersion: batch/v1 kind: Job metadata: name: telemetrygen spec: template: spec: containers: - name: telemetrygen image: ghcr.io/open-telemetry/opentelemetry-collector-contrib/telemetrygen:v0.106.1 args: - logs - --otlp-endpoint=otel-collector.openshift-logging.svc.cluster.local:4317 - --otlp-insecure - --duration=180s - --workers=1 - --logs=10 - --otlp-attributes=k8s.container.name="telemetrygen" restartPolicy: Never backoffLimit: 4