Support creating LogFileMetricsExporter CR

In logging version 5.8 and newer versions, the LogFileMetricExporter is no longer deployed with the collector by default.
You must manually create a LogFileMetricExporter custom resource (CR) to generate metrics from the logs produced by running containers.

If you do not create the LogFileMetricExporter CR, you may see a No datapoints found message in the OpenShift Container Platform web console dashboard for Produced Logs.

class/defaults.yml

@@ -57,6 +57,18 @@ parameters:
           threshold: 85
           for: 6h
           severity: warning
+      logmetrics:
+        enabled: true
+        spec:
+          nodeSelector:
+            node-role.kubernetes.io/infra: ''
+          resources:
+            limits:
+              cpu: 500m
+              memory: 256Mi
+            requests:
+              cpu: 200m
+              memory: 128Mi
 
     clusterLogging: {}
 

component/logmetrics.libsonnet

@@ -0,0 +1,16 @@
+local kap = import 'lib/kapitan.libjsonnet';
+local kube = import 'lib/kube.libjsonnet';
+
+local inv = kap.inventory();
+local params = inv.parameters.openshift4_logging;
+
+local logMetricExporter = kube._Object('logging.openshift.io/v1alpha1', 'LogFileMetricExporter', 'instance') {
+  metadata+: {
+    namespace: params.namespace,
+  },
+  spec: params.components.logmetrics.spec,
+};
+
+{
+  '70_logmetricsexporter': logMetricExporter,
+}

component/main.jsonnet

@@ -95,3 +95,4 @@ local subscriptions = std.filter(function(it) it != null, [
 + (import 'loki.libsonnet')
 + (import 'elasticsearch.libsonnet')
 + (import 'alertrules.libsonnet')
++ (import 'logmetrics.libsonnet')

tests/golden/defaults/openshift4-logging/openshift4-logging/70_logmetricsexporter.yaml

@@ -0,0 +1,18 @@
+apiVersion: logging.openshift.io/v1alpha1
+kind: LogFileMetricExporter
+metadata:
+  annotations: {}
+  labels:
+    name: instance
+  name: instance
+  namespace: openshift-logging
+spec:
+  nodeSelector:
+    node-role.kubernetes.io/infra: ''
+  resources:
+    limits:
+      cpu: 500m
+      memory: 256Mi
+    requests:
+      cpu: 200m
+      memory: 128Mi

tests/golden/elasticsearch/openshift4-logging/openshift4-logging/70_logmetricsexporter.yaml

@@ -0,0 +1,18 @@
+apiVersion: logging.openshift.io/v1alpha1
+kind: LogFileMetricExporter
+metadata:
+  annotations: {}
+  labels:
+    name: instance
+  name: instance
+  namespace: openshift-logging
+spec:
+  nodeSelector:
+    node-role.kubernetes.io/infra: ''
+  resources:
+    limits:
+      cpu: 500m
+      memory: 256Mi
+    requests:
+      cpu: 200m
+      memory: 128Mi

tests/golden/forwardingonly/openshift4-logging/openshift4-logging/70_logmetricsexporter.yaml

@@ -0,0 +1,18 @@
+apiVersion: logging.openshift.io/v1alpha1
+kind: LogFileMetricExporter
+metadata:
+  annotations: {}
+  labels:
+    name: instance
+  name: instance
+  namespace: openshift-logging
+spec:
+  nodeSelector:
+    node-role.kubernetes.io/infra: ''
+  resources:
+    limits:
+      cpu: 500m
+      memory: 256Mi
+    requests:
+      cpu: 200m
+      memory: 128Mi

tests/golden/master/openshift4-logging/openshift4-logging/70_logmetricsexporter.yaml

@@ -0,0 +1,18 @@
+apiVersion: logging.openshift.io/v1alpha1
+kind: LogFileMetricExporter
+metadata:
+  annotations: {}
+  labels:
+    name: instance
+  name: instance
+  namespace: openshift-logging
+spec:
+  nodeSelector:
+    node-role.kubernetes.io/infra: ''
+  resources:
+    limits:
+      cpu: 500m
+      memory: 256Mi
+    requests:
+      cpu: 200m
+      memory: 128Mi

tests/golden/multilineerr/openshift4-logging/openshift4-logging/70_logmetricsexporter.yaml

@@ -0,0 +1,18 @@
+apiVersion: logging.openshift.io/v1alpha1
+kind: LogFileMetricExporter
+metadata:
+  annotations: {}
+  labels:
+    name: instance
+  name: instance
+  namespace: openshift-logging
+spec:
+  nodeSelector:
+    node-role.kubernetes.io/infra: ''
+  resources:
+    limits:
+      cpu: 500m
+      memory: 256Mi
+    requests:
+      cpu: 200m
+      memory: 128Mi