Add Azure Arc demos

.vscode/settings.json

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demos/azurearc/readme.md

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+# Demos for Introduction to Azure Arc-enabled SQL Managed Instance
+
+These are the basic instructions for doing demos for Azure Arc-enabled SQL Managed Instance.
+
+## Pre-reqs
+
+Deploy Azure Arc-enabled SQL Managed Instance on the k8s of your choice. For my demos, I used https://docs.microsoft.com/en-us/azure/azure-arc/data/create-sql-managed-instance but deployed in direct connected mode all using the portal and used AKS for my k8s platform.
+
+## Explore Azure Arc-enabled SQL Managed Instance
+
+Show deployed resources in the Azure portal
+- Note the end point in the portal to connect to SQLMIAA
+Use Azure SQL VM to show SSMS connections to primary.
+
+- Object Explorer looks like SQL Server
+- Show @@version
+- Show user database already created
+
+Show ADS connecting to the primary
+- Explore the Controller dashboard and all the options including SQLMIAA config and backup/restore
+
+- Show Grafana dashboard
+- Show metrics in the portal for MI
+
+Let’s look  at some k8s
+
+- Show the arc agent pods from the namespace azure-arc
+- Show the pods for the namespace arcdata
+- Show all resources and point out the endpoints for the controller, SQLMIAA primary, and secondary replica
+
+## Arc High-Availability
+
+- Show in SSMS the AG dashboard
+- Show database we created earlier in the secondary replica
+- Create a new table and see it in both
+- Kill the main pod and see how HA failover kicks in. Show in SSMS in Availability replicas how a different pod has taken over as primary but the connections to primary and secondary have not changed.