docs: add file exporter example

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

Author: csatib02

docs/examples/file/pipeline.yaml

@@ -0,0 +1,71 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: collector
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    nsSelector: example-tenant
+  name: example-tenant-ns
+---
+apiVersion: telemetry.kube-logging.dev/v1alpha1
+kind: Collector
+metadata:
+  name: example-collector
+spec:
+  debug: true
+  controlNamespace: collector
+  tenantSelector:
+    matchLabels:
+      collectorLabel: example-collector
+---
+apiVersion: telemetry.kube-logging.dev/v1alpha1
+kind: Tenant
+metadata:
+  labels:
+    collectorLabel: example-collector
+  name: example-tenant
+spec:
+  subscriptionNamespaceSelectors:
+    - matchLabels:
+        nsSelector: example-tenant
+  logSourceNamespaceSelectors:
+    - matchLabels:
+        kubernetes.io/metadata.name: logging
+---
+apiVersion: telemetry.kube-logging.dev/v1alpha1
+kind: Subscription
+metadata:
+  name: subscription-sample-1
+  namespace: example-tenant-ns
+spec:
+  condition: "true"
+  outputs:
+    - name: file-test-output-1
+      namespace: example-tenant-ns
+    - name: file-test-output-2
+      namespace: example-tenant-ns
+---
+apiVersion: telemetry.kube-logging.dev/v1alpha1
+kind: Output
+metadata:
+  name: file-test-output-1
+  namespace: example-tenant-ns
+spec:
+  file:
+    path: "/file-exporter/logs.json"
+    append: true
+    format: "json"
+---
+apiVersion: telemetry.kube-logging.dev/v1alpha1
+kind: Output
+metadata:
+  name: file-test-output-2
+  namespace: example-tenant-ns
+spec:
+  file:
+    path: "/file-exporter/logs-2.json"
+    append: true
+    format: "json"