Azure API management migration from STv1 to STv2

Question

We have planned to migrate our existing API management from stv1 to stv2 due to the announced retirement of the stv1 platform. However, we are currently unsure which migration method is correct because different documentation sources provide conflicting information.Our virtual network (VNet) is in external mode.

1. When migrating from STV1 to STV2, can we use the same VNet to create a new subnet, or do we need to create a new VNet?
2. What configuration we need to create while migrating from STV1 to STV2 in external mode?
3. What steps are involved in migrating from STV1 to STV2 in external vnet?

Answer 1

Hello @Rudra the answer to your questions can be found in this Azure doc: Migrate an API Management instance hosted on the stv1 platform to stv2

Here are some points to bring some clarification to your questions:

1. To answer your first question, yes migration with the existing subnet (Internal VNet) is possible. You can migrate your API Management instance from Stv1 to Stv2 while keeping the same internal VNet subnet. This option is available through both the Azure portal and Infrastructure as Code (IaC).
2. To migrate from STV1 to STV2 in external mode, you need to create a new subnet in each VNet. Optionally, you can supply a public IP address resource.
3. To migrate an API Management instance hosted on the stv1 compute platform in an external VNet to the stv2 platform, follow these steps:
   1. Create a new subnet in the VNet that meets the requirements for NSG configuration for stv2 as described here.
      1. Update firewall rules referring to the current IP address range of the API Management instance to use the IP address range of the new subnet.
         1. Navigate to the Platform migration blade in the Azure portal.
            1. Change the subnet configuration(s) to the new subnet(s) created in step 1.
               1. Verify that the migration is complete and successful by checking that the status in the Overview page reads Online and the platform version is either stv2 or stv2.1. Also, verify that the network status in the Network blade shows green for all required connectivity.
   For more detailed information, you can refer to the following resources:
   • Migrate a VNet-injected API Management instance hosted on the stv1 platform to stv2
   • API Management using with VNet

Lastly, we highly recommend for you to migrate your Stv1 API Management instances to Stv2 before August 31, 2024, as Stv1 support will be retired after that date.

Please let us know if you have further questions.

Kindly accept answer if it help

Thanks

Deepanshu