Infrastructure as code

September 14, 2021

For T-SQL Tuesday this month we’ve been asked by Frank Geisler (@FrankGeisler) to write about how we use scripting to ensure consistency in our provisioned Azure platforms.

Of course! This is definitely important. Whenever something needs to happen multiple times in a consistent way, scripts are key to this. But let me wax lyrical for a moment about how this isn’t new.

You see, back in the days when all our data was on-prem, we would run through the SQL Server installer, choosing the various options and hitting Next. But the best thing about this installer was that it would create a file called Configuration.ini, which could be used to perform another installation with the same configuration.

This was critical to being able to spin up a separate server. And because these files remained on the server even if someone had just used the installation wizard, when an additional machine needed to be stood up, we could just grab the ini file and run an unattended installation, confident that we had the same collation settings and everything. (Don’t get me started about the kind of pain you’d have by picking the wrong collation in an install.)

If you’re reading this and the idea of using scripts is alien to you, please change your habits.

When you see a dialog box in SSMS, use it of course, but then use the Script button and hit Cancel. Apply your change by running the script, ideally through a proper deployment process. This is such a good habit to get into, I often wonder whether we’ll one day get a setting in SSMS to disable the “Ok” button on dialogs. I would certainly be enabling such a thing at my clients, to reduce the likelihood of ad hoc (and even accidental) changes.

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