*: Remove memory request from manifests

Documentation/user-guides/alerting.md

@@ -121,9 +121,6 @@ spec:
   serviceMonitorSelector:
     matchLabels:
       team: frontend
-  resources:
-    requests:
-      memory: 400Mi
   ruleSelector:
     matchLabels:
       role: alert-rules

example/additional-scrape-configs/prometheus.yaml

@@ -15,9 +15,6 @@ spec:
     - namespace: default
       name: alertmanager
       port: web
-  resources:
-    requests:
-      memory: 400Mi
   additionalScrapeConfigs:
     name: additional-scrape-configs
     key: prometheus-additional.yaml

example/non-rbac/prometheus.yaml

@@ -14,6 +14,3 @@ spec:
     - namespace: default
       name: alertmanager
       port: web
-  resources:
-    requests:
-      memory: 400Mi

example/rbac/prometheus/prometheus.yaml

@@ -15,6 +15,3 @@ spec:
     - namespace: default
       name: alertmanager
       port: web
-  resources:
-    requests:
-      memory: 400Mi

example/user-guides/alerting/prometheus-example.yaml

@@ -12,9 +12,6 @@ spec:
   serviceMonitorSelector:
     matchLabels:
       team: frontend
-  resources:
-    requests:
-      memory: 400Mi
   ruleSelector:
     matchLabels:
       role: alert-rules

pkg/prometheus/statefulset_test.go

@@ -255,6 +255,7 @@ func TestDeterministicRuleFileHashing(t *testing.T) {
 func TestMemoryRequestNotAdjustedWhenLimitLarger2Gi(t *testing.T) {
 	sset, err := makeStatefulSet(monitoringv1.Prometheus{
 		Spec: monitoringv1.PrometheusSpec{
+			Version: "v1.8.2",
 			Resources: v1.ResourceRequirements{
 				Limits: v1.ResourceList{
 					v1.ResourceMemory: resource.MustParse("3Gi"),
@@ -281,6 +282,7 @@ func TestMemoryRequestNotAdjustedWhenLimitLarger2Gi(t *testing.T) {
 func TestMemoryRequestAdjustedWhenOnlyLimitGiven(t *testing.T) {
 	sset, err := makeStatefulSet(monitoringv1.Prometheus{
 		Spec: monitoringv1.PrometheusSpec{
+			Version: "v1.8.2",
 			Resources: v1.ResourceRequirements{
 				Limits: v1.ResourceList{
 					v1.ResourceMemory: resource.MustParse("1Gi"),