[POLICY] Enable prometheus integration for policy fwk

1. Define serviceMonitor for policy components
2. Changes to common serviceMonitor tpl file to include
tls params in authentication config, and to provide ability
to overrride labels.

Issue-ID: POLICY-3779
Signed-off-by: Rashmi Pujar <rashmi.pujar1@bell.ca>
Change-Id: I79441958698271d9118efb78cfd121433e201ebd

2 files changed, 47 insertions, 0 deletions

diff --git a/kubernetes/policy/components/policy-distribution/templates/serviceMonitor.yaml b/kubernetes/policy/components/policy-distribution/templates/serviceMonitor.yaml
new file mode 100644
index 0000000000..dbf6a7cd6a
--- /dev/null
+++ b/kubernetes/policy/components/policy-distribution/templates/serviceMonitor.yaml
@@ -0,0 +1,23 @@
+{{/*
+# ============LICENSE_START=======================================================
+#  Copyright (c) 2022 Bell Canada
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#       http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+#  SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END=========================================================
+*/}}
+
+{{- if .Values.prometheus.enabled }}
+{{ include "common.serviceMonitor" . }}
+{{- end }}
\ No newline at end of file
diff --git a/kubernetes/policy/components/policy-distribution/values.yaml b/kubernetes/policy/components/policy-distribution/values.yaml
index 42caed4163..e8f8ad6099 100755
--- a/kubernetes/policy/components/policy-distribution/values.yaml
+++ b/kubernetes/policy/components/policy-distribution/values.yaml
@@ -161,3 +161,27 @@ serviceAccount:
   nameOverride: policy-distribution
   roles:
     - read
+
+prometheus:
+  enabled: true
+
+metrics:
+  serviceMonitor:
+    # Override the labels based on the Prometheus config parameter: serviceMonitorSelector.
+    # The default operator for prometheus enforces the below label.
+    labels:
+      release: prometheus
+    enabled: true
+    port: policy-distribution
+    interval: 60s
+    isHttps: true
+    basicAuth:
+      enabled: true
+      externalSecretNameSuffix: policy-distribution-restserver-creds
+      externalSecretUserKey: login
+      externalSecretPasswordKey: password
+    selector:
+      app: '{{ include "common.name" . }}'
+      chart: '{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}'
+      release: '{{ include "common.release" . }}'
+      heritage: '{{ .Release.Service }}'