diff --git a/CHANGELOG.md b/CHANGELOG.md
index f11536b9..34c5c855 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # Changelog
 
 ## master / unreleased
+* [CHANGE] Use port number for prometheus port annotations. #288
 * [CHANGE] Disable ingester startup probes by default. #286
 * [FEATURE] Optionally manage cortex config as configmap. #280
 * [ENHANCEMENT] Upgrade to Cortex v1.11.0 #272
diff --git a/README.md b/README.md
index 8689efc8..8fad2307 100644
--- a/README.md
+++ b/README.md
@@ -119,7 +119,7 @@ Kubernetes: `^1.19.0-0`
 | alertmanager.​persistentVolume.​size | string | `"2Gi"` | Alertmanager data Persistent Volume size |
 | alertmanager.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;storageClass | string | `nil` | Alertmanager data Persistent Volume Storage Class If defined, storageClassName: <storageClass> If set to "-", storageClassName: "", which disables dynamic provisioning If undefined (the default) or set to null, no storageClassName spec is set, choosing the default provisioner. |
 | alertmanager.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `""` | Subdirectory of Alertmanager data Persistent Volume to mount Useful if the volume's root directory is not empty |
-| alertmanager.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| alertmanager.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | alertmanager.&ZeroWidthSpace;podDisruptionBudget | object | `{"maxUnavailable":1}` | If not set then a PodDisruptionBudget will not be created |
 | alertmanager.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | alertmanager.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -174,7 +174,7 @@ Kubernetes: `^1.19.0-0`
 | compactor.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;size | string | `"2Gi"` |  |
 | compactor.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;storageClass | string | `nil` | compactor data Persistent Volume Storage Class If defined, storageClassName: <storageClass> If set to "-", storageClassName: "", which disables dynamic provisioning If undefined (the default) or set to null, no storageClassName spec is set, choosing the default provisioner. |
 | compactor.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `""` | Subdirectory of compactor data Persistent Volume to mount Useful if the volume's root directory is not empty |
-| compactor.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| compactor.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | compactor.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | compactor.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | compactor.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -263,7 +263,7 @@ Kubernetes: `^1.19.0-0`
 | configs.&ZeroWidthSpace;livenessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;port | string | `"http-metrics"` |  |
 | configs.&ZeroWidthSpace;nodeSelector | object | `{}` |  |
 | configs.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `nil` |  |
-| configs.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| configs.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | configs.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | configs.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | configs.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -318,7 +318,7 @@ Kubernetes: `^1.19.0-0`
 | distributor.&ZeroWidthSpace;livenessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;port | string | `"http-metrics"` |  |
 | distributor.&ZeroWidthSpace;nodeSelector | object | `{}` |  |
 | distributor.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `nil` |  |
-| distributor.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| distributor.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | distributor.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | distributor.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | distributor.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -379,7 +379,7 @@ Kubernetes: `^1.19.0-0`
 | ingester.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;size | string | `"2Gi"` | Ingester data Persistent Volume size |
 | ingester.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;storageClass | string | `nil` | Ingester data Persistent Volume Storage Class If defined, storageClassName: <storageClass> If set to "-", storageClassName: "", which disables dynamic provisioning If undefined (the default) or set to null, no storageClassName spec is set, choosing the default provisioner. |
 | ingester.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `""` | Subdirectory of Ingester data Persistent Volume to mount Useful if the volume's root directory is not empty |
-| ingester.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| ingester.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | ingester.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | ingester.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | ingester.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -490,7 +490,7 @@ Kubernetes: `^1.19.0-0`
 | nginx.&ZeroWidthSpace;livenessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;port | string | `"http-metrics"` |  |
 | nginx.&ZeroWidthSpace;nodeSelector | object | `{}` |  |
 | nginx.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `nil` |  |
-| nginx.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":""}` | Pod Annotations |
+| nginx.&ZeroWidthSpace;podAnnotations | object | `{}` | Pod Annotations |
 | nginx.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | nginx.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | nginx.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/healthz"` |  |
@@ -536,7 +536,7 @@ Kubernetes: `^1.19.0-0`
 | querier.&ZeroWidthSpace;livenessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;port | string | `"http-metrics"` |  |
 | querier.&ZeroWidthSpace;nodeSelector | object | `{}` |  |
 | querier.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `nil` |  |
-| querier.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| querier.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | querier.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | querier.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | querier.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -580,7 +580,7 @@ Kubernetes: `^1.19.0-0`
 | query_frontend.&ZeroWidthSpace;livenessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;port | string | `"http-metrics"` |  |
 | query_frontend.&ZeroWidthSpace;nodeSelector | object | `{}` |  |
 | query_frontend.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `nil` |  |
-| query_frontend.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| query_frontend.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | query_frontend.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | query_frontend.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | query_frontend.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -621,7 +621,7 @@ Kubernetes: `^1.19.0-0`
 | ruler.&ZeroWidthSpace;livenessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;port | string | `"http-metrics"` |  |
 | ruler.&ZeroWidthSpace;nodeSelector | object | `{}` |  |
 | ruler.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `nil` |  |
-| ruler.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| ruler.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | ruler.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | ruler.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | ruler.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -684,7 +684,7 @@ Kubernetes: `^1.19.0-0`
 | store_gateway.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;size | string | `"2Gi"` | Store-gateway data Persistent Volume size |
 | store_gateway.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;storageClass | string | `nil` | Store-gateway data Persistent Volume Storage Class If defined, storageClassName: <storageClass> If set to "-", storageClassName: "", which disables dynamic provisioning If undefined (the default) or set to null, no storageClassName spec is set, choosing the default provisioner. |
 | store_gateway.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `""` | Subdirectory of Store-gateway data Persistent Volume to mount Useful if the volume's root directory is not empty |
-| store_gateway.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| store_gateway.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | store_gateway.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | store_gateway.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | store_gateway.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
@@ -724,7 +724,7 @@ Kubernetes: `^1.19.0-0`
 | table_manager.&ZeroWidthSpace;livenessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;port | string | `"http-metrics"` |  |
 | table_manager.&ZeroWidthSpace;nodeSelector | object | `{}` |  |
 | table_manager.&ZeroWidthSpace;persistentVolume.&ZeroWidthSpace;subPath | string | `nil` |  |
-| table_manager.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"http-metrics","prometheus.io/scrape":"true"}` | Pod Annotations |
+| table_manager.&ZeroWidthSpace;podAnnotations | object | `{"prometheus.io/port":"8080","prometheus.io/scrape":"true"}` | Pod Annotations |
 | table_manager.&ZeroWidthSpace;podDisruptionBudget.&ZeroWidthSpace;maxUnavailable | int | `1` |  |
 | table_manager.&ZeroWidthSpace;podLabels | object | `{}` | Pod Labels |
 | table_manager.&ZeroWidthSpace;readinessProbe.&ZeroWidthSpace;httpGet.&ZeroWidthSpace;path | string | `"/ready"` |  |
diff --git a/values.yaml b/values.yaml
index 791f990a..66f07e9c 100644
--- a/values.yaml
+++ b/values.yaml
@@ -201,7 +201,7 @@ alertmanager:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity: {}
@@ -345,7 +345,7 @@ distributor:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity:
@@ -453,7 +453,7 @@ ingester:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity:
@@ -605,7 +605,7 @@ ruler:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity: {}
@@ -723,7 +723,7 @@ querier:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity:
@@ -825,7 +825,7 @@ query_frontend:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity:
@@ -915,7 +915,7 @@ table_manager:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity: {}
@@ -994,7 +994,7 @@ configs:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity: {}
@@ -1105,9 +1105,7 @@ nginx:
   podLabels: {}
 
   # -- Pod Annotations
-  podAnnotations:
-    prometheus.io/scrape: ''
-    prometheus.io/port: 'http-metrics'
+  podAnnotations: {}
 
   nodeSelector: {}
   affinity: {}
@@ -1195,7 +1193,7 @@ store_gateway:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity:
@@ -1313,7 +1311,7 @@ compactor:
   # -- Pod Annotations
   podAnnotations:
     prometheus.io/scrape: 'true'
-    prometheus.io/port: 'http-metrics'
+    prometheus.io/port: '8080'
 
   nodeSelector: {}
   affinity: