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Testing Failover Group and TCP Connectivity with Managed Instances

Niko Neugebauer has a pair of connectivity tests for us. First up is failover group connectivity:

When you set up a failover group between primary and secondary SQL Managed Instances in two different regions, each instance is isolated using an independent virtual network. Replication traffic needs to be allowed between these VNets.

To allow this kind of traffic, one of the prerequisites is:

– “You need to set up your Network Security Groups (NSG) such that ports 5022 and the range 11000-11999 are open inbound and outbound for connections from the subnet of the other managed instance. This is to allow replication traffic between the instances.”

Click through for a SQL Agent job script which helps with the test. Meanwhile, you can also test TCP connectivity from a managed instance:

In this post we shall focus on helping you determining the TCP connectivity from SQL Managed Instance against a given endpoint and port of your choice.

If you are interested in other posts on how-to discover different aspects of SQL MI – please visit the  http://aka.ms/sqlmi-howto, which serves as a placeholder for the series.

There are scenarios where it would be nice to be able to test if a SQL Managed Instance can reach some “external” endpoints, like Azure Storage as an example.

Check out both posts.

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