[prometheus] Support hostPath volumes

The same for prometheus-alertmanager

Change-Id: Ib2fd4d2468b69b478408e914693591f299bca89b

prometheus-alertmanager/templates/statefulset.yaml

@@ -170,8 +170,15 @@ spec:
             defaultMode: 0555
 {{ if $mounts_alertmanager.volumes }}{{ toYaml $mounts_alertmanager.volumes | indent 8 }}{{ end }}
 {{- if not .Values.storage.alertmanager.enabled }}
+{{- if .Values.storage.alertmanager.use_local_path.enabled }}
+        - name: alertmanager-data
+          hostPath:
+            path: {{ .Values.storage.alertmanager.use_local_path.host_path }}
+            type: DirectoryOrCreate
+{{- else }}
         - name: alertmanager-data
           emptyDir: {}
+{{- end }}
 {{- else }}
   volumeClaimTemplates:
     - metadata:

prometheus-alertmanager/values.yaml

@@ -224,6 +224,9 @@ storage:
     requests:
       storage: 5Gi
     storage_class: general
+    use_local_path:
+      enabled: false
+      host_path: /var/lib/prometheus-alertmanager-data
 
 manifests:
   clusterrolebinding: true

prometheus/templates/statefulset.yaml

@@ -245,8 +245,15 @@ spec:
 {{- end }}
 {{ if $mounts_prometheus.volumes }}{{ toYaml $mounts_prometheus.volumes | indent 8 }}{{ end }}
 {{- if not .Values.storage.enabled }}
+{{- if .Values.storage.use_local_path.enabled }}
+        - name: storage
+          hostPath:
+            path: {{ .Values.storage.use_local_path.host_path }}
+            type: DirectoryOrCreate
+{{- else }}
         - name: storage
           emptyDir: {}
+{{- end }}
 {{- else }}
   volumeClaimTemplates:
     - metadata:

prometheus/values.yaml

@@ -319,6 +319,9 @@ storage:
   requests:
     storage: 5Gi
   storage_class: general
+  use_local_path:
+    enabled: false
+    host_path: /var/lib/prometheus-data
 
 manifests:
   certificates: false

tools/deployment/monitoring/alertmanager.sh

@@ -19,6 +19,7 @@ set -xe
 #NOTE: Deploy command
 helm upgrade --install prometheus-alertmanager ${OSH_HELM_REPO}/prometheus-alertmanager \
     --namespace=osh-infra \
+    ${VOLUME_HELM_ARGS:="--set storage.alertmanager.enabled=false --set storage.alertmanager.use_local_path.enabled=true"} \
     --set pod.replicas.alertmanager=1
 
 #NOTE: Wait for deploy

tools/deployment/monitoring/prometheus.sh

@@ -19,9 +19,11 @@ set -xe
 FEATURES="alertmanager ceph elasticsearch kubernetes nodes openstack postgresql apparmor ${FEATURES}"
 : ${OSH_EXTRA_HELM_ARGS_PROMETHEUS:="$(helm osh get-values-overrides -p ${OSH_VALUES_OVERRIDES_PATH} -c prometheus ${FEATURES})"}
 
+
 #NOTE: Deploy command
 helm upgrade --install prometheus ${OSH_HELM_REPO}/prometheus \
     --namespace=osh-infra \
+    ${VOLUME_HELM_ARGS:="--set storage.enabled=false --set storage.use_local_path.enabled=true"} \
     ${OSH_EXTRA_HELM_ARGS:=} \
     ${OSH_EXTRA_HELM_ARGS_PROMETHEUS}