Allow changing the size or requested memory.

deploy

@@ -8,6 +8,7 @@ PROMETHEUS_DEFAULT_VERSION=v2.0.0
 PROMETHEUS_OPERATOR_DEFAULT_VERSION=v0.15.0
 PROMETHEUS_STORAGE_DEFAULT_RETENTION=168h
 PROMETHEUS_STORAGE_DEFAULT_VOLUME_SIZE=40Gi
+PROMETHEUS_DEFAULT_MEMORY_REQUEST=1Gi
 ALERTMANAGER_DEFAULT_VERSION=v0.12.0
 NODE_EXPORTER_DEFAULT_VERSION=v0.15.2
 KUBE_STATE_METRICS_DEFAULT_VERSION=v1.1.0
@@ -118,6 +119,11 @@ echo
 read -p "Enter Prometheus storage volume size [$PROMETHEUS_STORAGE_DEFAULT_VOLUME_SIZE]: " PROMETHEUS_STORAGE_VOLUME_SIZE
 PROMETHEUS_STORAGE_VOLUME_SIZE=${PROMETHEUS_STORAGE_VOLUME_SIZE:-$PROMETHEUS_STORAGE_DEFAULT_VOLUME_SIZE}
 
+#Prometheus Memory Request
+echo
+read -p "Enter Prometheus memory request in Gi or Mi [$PROMETHEUS_DEFAULT_MEMORY_REQUEST]: " PROMETHEUS_MEMORY_REQUEST
+PROMETHEUS_MEMORY_REQUEST=${PROMETHEUS_MEMORY_REQUEST:-$PROMETHEUS_DEFAULT_MEMORY_REQUEST}
+
 #Grafana
 echo
 read -p "Enter Grafana version [$GRAFANA_DEFAULT_VERSION]: " GRAFANA_VERSION
@@ -160,6 +166,9 @@ sed -i -e 's/PROMETHEUS_STORAGE_RETENTION/'"$PROMETHEUS_STORAGE_RETENTION"'/g' m
 #set prometheus storage volume size
 sed -i -e 's/PROMETHEUS_STORAGE_VOLUME_SIZE/'"$PROMETHEUS_STORAGE_VOLUME_SIZE"'/g' manifests/prometheus/prometheus-k8s.yaml
 
+#set prometheus memory request
+sed -i -e 's/PROMETHEUS_MEMORY_REQUEST/'"$PROMETHEUS_MEMORY_REQUEST"'/g' manifests/prometheus/prometheus-k8s.yaml
+
 #set grafana version
 sed -i -e 's/GRAFANA_VERSION/'"$GRAFANA_VERSION"'/g' manifests/grafana/grafana.de.yaml
 

manifests/prometheus/prometheus-k8s.yaml

@@ -39,7 +39,7 @@ spec:
           requests:
             storage: PROMETHEUS_STORAGE_VOLUME_SIZE
     requests:
-      memory: 2Gi
+      memory: PROMETHEUS_MEMORY_REQUEST
   alerting:
     alertmanagers:
     - namespace: monitoring