Add documentation for the operations dashboard

doc/user/index.md

@@ -177,3 +177,8 @@ Learn what is [Git](../topics/git/index.md) and its best practices.
 ## Instance statistics
 
 See [various statistics](instance_statistics/index.md) of your GitLab instance.
+
+## Operations Dashboard
+
+See [Operations Dashboard](operations_dashboard/index.md) for a summary of each
+project's operational health.

doc/user/operations_dashboard/index.md

+# Operations Dashboard **[ULTIMATE]**
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/5781)
+in [GitLab Ultimate](https://about.gitlab.com/pricing/) 11.5.
+
+The Operations Dashboard provides a summary of each project's operational health,
+including pipeline and alert status.
+
+The dashboard can be accessed via the top bar, by clicking on the new
+dashboard icon:
+
+![Operations Dashboard icon in top bar](img/index_operations_dashboard_top_bar_icon.png)
+
+The Operations Dashboard can also be made the default GitLab dashboard shown when
+you sign in. To make it the default:
+
+1. Go to **User Settings > Preferences**.
+1. In the **Behaviour** section, select **Operations Dashboard** from the **Default dashboard** dropdown.
+1. Click the **Save changes** button.
+
+![Change default dashboard setting](img/index_change_default_dashboard.png)
+
+## Adding a project to the dashboard
+
+NOTE: **Note:**
+For GitLab.com, projects must belong to a group with a [Gold](https://about.gitlab.com/pricing/)
+subscription to be added to the Operations Dashboard.
+
+To add a project to the dashboard:
+
+1. Search for a project using the **Search your projects** field.
+1. Click the **Add projects** button.
+
+Once added, the dashboard will display the number of active alerts,
+last commit, pipeline status, and when it was last deployed.
+
+![Operations Dashboard with projects](img/index_operations_dashboard_with_projects.png)