DOC-4928 Added missing v1 monitoring doc to RS 7.8 versioned docs

Author: rrelledge

content/operate/rs/7.8/monitoring/v1_monitoring.md

@@ -0,0 +1,93 @@
+---
+Title: Metrics and alerts for monitoring v1
+alwaysopen: false
+categories:
+- docs
+- operate
+- rs
+- kubernetes
+description: Monitor Redis Enterprise Software clusters and databases using internal monitoring systems and external monitoring tools.
+hideListLinks: true
+linkTitle: Monitoring v1
+weight: 50
+url: '/operate/rs/7.8/monitoring/v1_monitoring/'
+---
+
+The current approach to monitoring Redis Enterprise Software includes:
+
+- Internal monitoring systems:
+
+    - [Statistics APIs]({{<relref "/operate/rs/references/rest-api/objects/statistics">}}), which collect various statistics at regular time intervals for clusters, nodes, databases, shards, and endpoints.
+
+    - Cluster manager metrics and alerts.
+
+- The v1 Prometheus scraping endpoint to integrate with external monitoring tools such as [Prometheus and Grafana]({{<relref "/operate/rs/monitoring/prometheus_and_grafana">}}).
+
+## Cluster manager metrics
+
+You can see the metrics of the cluster in:
+
+- **Cluster > Metrics**
+- **Node > Metrics** for each node
+- **Database > Metrics** for each database, including the shards for that database
+
+The scale selector at the top of the page allows you to set the X-axis (time) scale of the graph.
+
+To choose which metrics to display in the two large graphs at the top of the page:
+
+1. Hover over the graph you want to show in a large graph.
+1. Click on the right or left arrow to choose which side to show the graph.
+
+We recommend that you show two similar metrics in the top graphs so you can compare them side-by-side.
+
+See the following topics for metrics definitions:
+- [Database operations]({{< relref "/operate/rs/references/metrics/database-operations" >}}) for database metrics
+- [Resource usage]({{< relref "/operate/rs/references/metrics/resource-usage" >}}) for resource and database usage metrics
+- [Auto Tiering]({{< relref "/operate/rs/references/metrics/auto-tiering" >}}) for additional metrics for [Auto Tiering ]({{< relref "/operate/rs/databases/auto-tiering" >}}) databases
+
+## Cluster alerts
+
+In **Cluster > Alert Settings**, you can enable alerts for node or cluster events, such as high memory usage or throughput.
+
+Configured alerts are shown:
+
+- As a notification on the status icon ( {{< image filename="/images/rs/icons/icon_warning.png#no-click" alt="Warning" width="18px" class="inline" >}} ) for the node and cluster
+- In the **log**
+- In email notifications, if you configure [email alerts](#send-alerts-by-email)
+
+{{< note >}}
+If you enable alerts for "Node joined" or "Node removed" actions,
+you must also enable "Receive email alerts" so that the notifications are sent.
+{{< /note >}}
+
+To enable alerts for a cluster:
+
+1. In **Cluster > Alert Settings**, click **Edit**. 
+1. Select the alerts that you want to show for the cluster and click **Save**.
+
+## Database alerts
+
+For each database, you can enable alerts for database events, such as high memory usage or throughput.
+
+Configured alerts are shown:
+
+- As a notification on the status icon ( {{< image filename="/images/rs/icons/icon_warning.png#no-click" alt="Warning" width="18px" class="inline" >}} ) for the database
+- In the **log**
+- In emails, if you configure [email alerts](#send-alerts-by-email)
+
+To enable alerts for a database:
+
+1. In **Configuration** for the database, click **Edit**.
+1. Select the **Alerts** section to open it.
+1. Select the alerts that you want to show for the database and click **Save**.
+
+## Send alerts by email
+
+To send cluster and database alerts by email:
+
+1. In **Cluster > Alert Settings**, click **Edit**.
+1. Select **Set an email** to configure the [email server settings]({{< relref "/operate/rs/clusters/configure/cluster-settings#configuring-email-server-settings" >}}).
+1. In **Configuration** for the database, click **Edit**.
+1. Select the **Alerts** section to open it.
+1. Select **Receive email alerts** and click **Save**.
+1. In **Access Control**, select the [database and cluster alerts]({{< relref "/operate/rs/security/access-control/manage-users" >}}) that you want each user to receive.