Move information to main Prometheus page

The page in the development directory is a stub and can be combined
with the information on the main Prometheus page.

doc/development/README.md

@@ -110,7 +110,6 @@ from:
 - [Working with Merge Request diffs](diffs.md)
 - [Kubernetes integration guidelines](kubernetes.md)
 - [Permissions](permissions.md)
-- [Prometheus](prometheus.md)
 - [Guidelines for reusing abstractions](reusing_abstractions.md)
 - [DeclarativePolicy framework](policies.md)
 - [How Git object deduplication works in GitLab](git_object_deduplication.md)

doc/development/prometheus.md

 ---
-stage: Monitor
-group: Health
-info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+redirect_to: '../user/project/integrations/prometheus.md'
 ---
 
-# Working with Prometheus
-
-For more information on working with [Prometheus metrics](prometheus_metrics.md), see
-the documentation.
-
-## Access the UI of a Prometheus managed application in Kubernetes
-
-You can connect directly to Prometheus, and view the Prometheus user interface, when
-using a Prometheus managed application in Kubernetes:
-
-1. Find the name of the Prometheus pod in the user interface of your Kubernetes
-   provider, such as GKE, or by running the following `kubectl` command in your
-   terminal:
-
-   ```shell
-   kubectl get pods -n gitlab-managed-apps | grep 'prometheus-prometheus-server'
-   ```
-
-   The command should return a result like the following example, where
-   `prometheus-prometheus-server-55b4bd64c9-dpc6b` is the name of the Prometheus pod:
-
-   ```plaintext
-   gitlab-managed-apps  prometheus-prometheus-server-55b4bd64c9-dpc6b  2/2  Running  0  71d
-   ```
-
-1. Run a `kubectl port-forward` command. In the following example, `9090` is the
-   Prometheus server's listening port:
-
-   ```shell
-    kubectl port-forward prometheus-prometheus-server-55b4bd64c9-dpc6b 9090:9090 -n gitlab-managed-apps
-   ```
-
-   The `port-forward` command forwards all requests sent to your system's `9090` port
-   to the `9090` port of the Prometheus pod. If the `9090` port on your system is used
-   by another application, you can change the port number before the colon to your
-   desired port. For example, to forward port `8080` of your local system, change the
-   command to:
-
-   ```shell
-   kubectl port-forward prometheus-prometheus-server-55b4bd64c9-dpc6b 8080:9090 -n gitlab-managed-apps
-   ```
-
-1. Open `localhost:9090` in your browser to display the Prometheus user interface.
-
-## Script access to Prometheus
-
-You can script the access to Prometheus, extracting the name of the pod automatically like this:
-
-```shell
-POD_INFORMATION=$(kubectl get pods -n gitlab-managed-apps | grep 'prometheus-prometheus-server')
-POD_NAME=$(echo $POD_INFORMATION | awk '{print $1;}')
-kubectl port-forward $POD_NAME 9090:9090 -n gitlab-managed-apps
-```
+This document was moved to [another location](../user/project/integrations/prometheus.md).

doc/operations/metrics/dashboards/index.md

@@ -226,7 +226,7 @@ links:
 ## Troubleshooting
 
 When troubleshooting issues with a managed Prometheus app, it is often useful to
-[view the Prometheus UI](../../../development/prometheus.md#access-the-ui-of-a-prometheus-managed-application-in-kubernetes).
+[view the Prometheus UI](../../../user/project/integrations/prometheus.md#access-the-ui-of-a-prometheus-managed-application-in-kubernetes).
 
 ### "No data found" error on Metrics dashboard page
 

doc/user/project/integrations/prometheus.md

@@ -95,6 +95,55 @@ spec:
       targetPort: ${CONTAINER_PORT}
 ```
 
+#### Access the UI of a Prometheus managed application in Kubernetes
+
+You can connect directly to Prometheus, and view the Prometheus user interface, when
+using a Prometheus managed application in Kubernetes:
+
+1. Find the name of the Prometheus pod in the user interface of your Kubernetes
+   provider, such as GKE, or by running the following `kubectl` command in your
+   terminal:
+
+   ```shell
+   kubectl get pods -n gitlab-managed-apps | grep 'prometheus-prometheus-server'
+   ```
+
+   The command should return a result like the following example, where
+   `prometheus-prometheus-server-55b4bd64c9-dpc6b` is the name of the Prometheus pod:
+
+   ```plaintext
+   gitlab-managed-apps  prometheus-prometheus-server-55b4bd64c9-dpc6b  2/2  Running  0  71d
+   ```
+
+1. Run a `kubectl port-forward` command. In the following example, `9090` is the
+   Prometheus server's listening port:
+
+   ```shell
+    kubectl port-forward prometheus-prometheus-server-55b4bd64c9-dpc6b 9090:9090 -n gitlab-managed-apps
+   ```
+
+   The `port-forward` command forwards all requests sent to your system's `9090` port
+   to the `9090` port of the Prometheus pod. If the `9090` port on your system is used
+   by another application, you can change the port number before the colon to your
+   desired port. For example, to forward port `8080` of your local system, change the
+   command to:
+
+   ```shell
+   kubectl port-forward prometheus-prometheus-server-55b4bd64c9-dpc6b 8080:9090 -n gitlab-managed-apps
+   ```
+
+1. Open `localhost:9090` in your browser to display the Prometheus user interface.
+
+#### Script access to Prometheus
+
+You can script the access to Prometheus, extracting the name of the pod automatically like this:
+
+```shell
+POD_INFORMATION=$(kubectl get pods -n gitlab-managed-apps | grep 'prometheus-prometheus-server')
+POD_NAME=$(echo $POD_INFORMATION | awk '{print $1;}')
+kubectl port-forward $POD_NAME 9090:9090 -n gitlab-managed-apps
+```
+
 ### Manual configuration of Prometheus
 
 #### Requirements