Alerting: Add landing page

[konrad147]

What is this feature? A new landing page for Alerting

Which issue(s) does this PR fix?: Fixes #58576

Special notes for your reviewer: V1

V2

V3

[brendamuir]

Hey Konrad--looking great--so much better :) My feedback: Top section:

• how about instead of What you can do --> Welcome to Grafana Alerting and text underneath: Grafana Alerting helps you manage your alerts.
• I wouldn't put a link to the docs here -- I think the one at the bottom under Get started is enough Alert rule:
• I would call the button "Create alert rule" and add a full stop after the text. Notification policies: -I would call it Configure notification policies and again, add full stops. Contact points:
• Be consistent and say "Configure contact point" as the rest are singular. Change the text here to: Configure who receives notifications and how. Getting started: -I would rename to Get started and Deep dive (no need for into Alerting)
• Will this text link to docs or is it just a quick bulleted list?
• Change to "Assign labels"
• Change to "Send notifications to tools, such as xxxx, and more Deep dive:
• Enroll in our Grafana University Alerting course. (can we add the link to this text rather than having more text underneath? and maybe if not then just Learn more and Read more (no need for in the docs or in the uni course)

Hope that helps. Ask away if it's unclear :)

[brendamuir]

Also--re first time users and existing users; any change of behaviour in display of the landing page? Can the system detect that and display different content? Is there a way an existing user can easily x out of this and get a list view of their existing alert rules, etc. for example..?

[brendamuir]

Another go at the text for the how it works at a glance:

• Grafana Alerting periodically queries your data sources and evaluates the conditions defined in your alert rule.
• If a condition remains breached for the duration specified, the alert rule fires and can produce multiple alert instances in in different states.
• A firing alert instance is assigned to a notification policy based on whether the labels defined in the alert rule and in the notification policy match.
• If multiple alert instances are firing, they are grouped and notifications are sent out to the contact points you defined.

[alexmobo]

AWE-SOME