docs: add tc-routing sample

Signed-off-by: Bence Csati <bence.csati@axoflow.com>

Author: csatib02

config/samples/telemetry-controller-routing/README.md

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+# TC-routing
+
+## Setup
+
+```shell
+make kind-cluster
+make docker-build
+kind load docker-image controller:local
+
+helm upgrade --install \
+    --wait \
+    --create-namespace \
+    --namespace logging \
+    logging-operator ./charts/logging-operator/ \
+    --set image.repository=controller \
+    --set image.tag=local \
+    --set extraArgs='{"-enable-leader-election=true","-enable-telemetry-controller-route"}' \
+    --set telemetry-controller.install=true \
+    --set testReceiver.enabled=true
+
+kubectl apply -f config/samples/telemetry-controller-routing/
+
+helm upgrade --install --namespace customer-a log-generator oci://ghcr.io/kube-logging/helm-charts/log-generator
+helm upgrade --install --namespace customer-b log-generator oci://ghcr.io/kube-logging/helm-charts/log-generator
+helm upgrade --install --namespace infra log-generator oci://ghcr.io/kube-logging/helm-charts/log-generator
+```
+
+## Switching between logging-routes or TC routing
+
+To use only logging-routes (This is the default behaviour!):
+
+- Don't set anything.
+
+```yaml
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Logging
+spec:
+  routeConfig:
+    enableTelemetryControllerRoute: false
+    disableLoggingRoute: false
+```
+
+To use logging-routes and TC routing in parallel:
+
+```yaml
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Logging
+spec:
+  routeConfig:
+    enableTelemetryControllerRoute: true
+    disableLoggingRoute: false
+```
+
+To use only TC routing:
+
+```yaml
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Logging
+spec:
+  routeConfig:
+    enableTelemetryControllerRoute: true
+    disableLoggingRoute: true
+```
+
+NOTE: You can change these setting on the fly, the only requirement is to have the necessary components deployed.

config/samples/telemetry-controller-routing/tc-tenant-a-logging.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: customer-a
+  labels:
+    tenant: customer-a
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: customer-a-infra
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Logging
+metadata:
+  name: customer-a
+  labels:
+    tenant: customer-a
+spec:
+  fluentd:
+    disablePvc: true
+    logLevel: trace
+  controlNamespace: customer-a-infra
+  watchNamespaceSelector:
+    matchLabels:
+      tenant: customer-a
+  routeConfig:
+    enableTelemetryControllerRoute: true
+    disableLoggingRoute: true
+    tenantLabels:
+      tenant: customer-a
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Flow
+metadata:
+  name: all
+  namespace: customer-a
+spec:
+  match:
+  - select:
+      labels:
+        app.kubernetes.io/name: log-generator
+  localOutputRefs:
+    - http-a
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Output
+metadata:
+  name: http-a
+  namespace: customer-a
+spec:
+  http:
+    endpoint: http://logging-operator-test-receiver.logging:8080
+    content_type: application/json
+    buffer:
+      type: memory
+      tags: time
+      timekey: 1s
+      timekey_wait: 0s

config/samples/telemetry-controller-routing/tc-tenant-b-logging.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: customer-b
+  labels:
+    tenant: customer-b
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: customer-b-infra
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Logging
+metadata:
+  name: customer-b
+  labels:
+    tenant: customer-b
+spec:
+  fluentd:
+    disablePvc: true
+    logLevel: trace
+  controlNamespace: customer-b-infra
+  watchNamespaceSelector:
+    matchLabels:
+      tenant: customer-b
+  routeConfig:
+    enableTelemetryControllerRoute: true
+    disableLoggingRoute: true
+    tenantLabels:
+      tenant: customer-b
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Flow
+metadata:
+  name: all
+  namespace: customer-b
+spec:
+  match:
+  - select:
+      labels:
+        app.kubernetes.io/name: log-generator
+  localOutputRefs:
+    - http-b
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Output
+metadata:
+  name: http-b
+  namespace: customer-b
+spec:
+  http:
+    endpoint: http://logging-operator-test-receiver.logging:8080
+    content_type: application/json
+    buffer:
+      type: memory
+      tags: time
+      timekey: 1s
+      timekey_wait: 0s

config/samples/telemetry-controller-routing/tc-tenant-infra-logging.yaml

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+apiVersion: telemetry.kube-logging.dev/v1alpha1
+kind: Collector
+metadata:
+  name: cluster
+spec:
+  controlNamespace: infra
+  debug: true
+  tenantSelector:
+    matchExpressions:
+      - key: tenant
+        operator: Exists
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: infra
+  labels:
+    tenant: infra
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: Logging
+metadata:
+  name: infra
+  labels:
+    tenant: infra
+spec:
+  loggingRef: infra
+  fluentd:
+    disablePvc: true
+    logLevel: trace
+  controlNamespace: infra
+  watchNamespaceSelector:
+    matchLabels:
+      tenant: infra
+  routeConfig:
+    enableTelemetryControllerRoute: true
+    disableLoggingRoute: true
+    tenantLabels:
+      tenant: infra
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: ClusterFlow
+metadata:
+  name: all
+  namespace: infra
+spec:
+  loggingRef: infra
+  match:
+  - select:
+      labels:
+        app.kubernetes.io/name: log-generator
+  globalOutputRefs:
+    - http-infra
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: ClusterOutput
+metadata:
+  name: http-infra
+  namespace: infra
+spec:
+  loggingRef: infra
+  http:
+    endpoint: http://test-receiver.infra:8080/infra
+    content_type: application/json
+    buffer:
+      type: memory
+      timekey: 1s
+      timekey_wait: 0s
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: FluentbitAgent
+metadata:
+  name: infra
+spec:
+  loggingRef: infra
+  inputTail:
+    storage.type: filesystem
+  positiondb:
+    hostPath:
+      path: ""
+  bufferStorageVolume:
+    hostPath:
+      path: ""
+  network:
+    connectTimeout: 2
+  metrics: {}
+---
+apiVersion: logging.banzaicloud.io/v1beta1
+kind: LoggingRoute
+metadata:
+  name: tenants
+spec:
+  source: infra
+  targets:
+    matchExpressions:
+      - key: tenant
+        operator: Exists

config/samples/telemetry-controller-routing/tc-tenant-infra-receiver.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: test-receiver
+  namespace: infra
+spec:
+  type: ClusterIP
+  ports:
+    - port: 8080
+      targetPort: receiver
+      protocol: TCP
+      name: receiver
+  selector:
+    app.kubernetes.io/name: test-receiver
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-receiver
+  namespace: infra
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: test-receiver
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: test-receiver
+      annotations:
+        fluentbit.io/exclude: "true"
+    spec:
+      containers:
+      - name: fluentbit
+        image: fluent/fluent-bit
+        args: ["-i", "http", "-p", "port=8080", "-o", "stdout"]
+        ports:
+          - name: receiver
+            containerPort: 8080