chore(chart): check CRDs available before installing prometheus resou…

…rces

Prometheus  resources should not be rendered unless Prometheus CRDs are
available.

This changeset includes an extra option to override the `apiVersion` Prometheus
provides.

close #107

Signed-off-by: cmontemuino <1761056+cmontemuino@users.noreply.github.com>

deploy/charts/Chart.yaml

@@ -34,7 +34,7 @@ keywords:
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.4.13
+version: 0.4.14
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to

deploy/charts/templates/podmonitors.yaml

@@ -1,3 +1,4 @@
+{{ if (.Capabilities.APIVersions.Has "monitoring.coreos.com/v1") }}
 {{- range $monitoringAddon, $fields := .Values.openebsMonitoringAddon }}
 {{- if (and (hasKey $fields "enabled") ($fields.enabled)) }}
 {{- if (hasKey $fields "podMonitor") }}
@@ -27,3 +28,4 @@ spec:
 {{- end }}
 {{- end }}
 {{- end }}
+{{- end }}

deploy/charts/templates/prometheusRules.yaml

@@ -1,3 +1,4 @@
+{{ if (.Capabilities.APIVersions.Has "monitoring.coreos.com/v1") }}
 {{- $alertRules := dict -}}
 {{- range $monitoringAddon,$fields := .Values.openebsMonitoringAddon }}
 {{- if (and (hasKey $fields "enabled") ($fields.enabled)) }}
@@ -28,3 +29,4 @@ spec:
 {{- end }}
 {{- end }}
 {{- end }}
+{{- end }}

deploy/charts/templates/servicemonitors.yaml

@@ -1,3 +1,4 @@
+{{ if (.Capabilities.APIVersions.Has "monitoring.coreos.com/v1") }}
 {{- range $monitoringAddon, $fields := .Values.openebsMonitoringAddon }}
 {{- if (and (hasKey $fields "enabled") ($fields.enabled)) }}
 {{- if (hasKey $fields "serviceMonitor") }}
@@ -27,3 +28,4 @@ spec:
 {{- end }}
 {{- end }}
 {{- end }}
+{{- end }}