In this post I would like to tell about a brief insight of benefits what Docker can provide to you as a .NET stack developer working with SQL Server. Maybe the main focus and excitement this time will be about the new opportunities in local development on Mac OS, nevertheless the good things what Docker can bring to you are more than just that.
I'm a web developer & CI/CD process administrator in my everyday work in Geta. I have Mac OS as my host OS for many years now and I really enjoy the benefits what I get using devices in so called "Mac ecosystem". Won't go in more details about it this time but that is why I'm writing about Docker in Mac OS.
Our company's core business is to produce web applications & services built on .NET platform and obviously SQL Server is most common database engine choice in this context because it fits well with .NET applications. This means that pretty much every developer in our company has to run local SQL Server instance for local development purposes on their computers. And obviously there haven't been easy solutions to run SQL Server natively on Mac OS, which requires me to run it on Windows hosted on Parallels Desktop VM, which in turn makes me sacrifice some host OS resources. As I mentioned, I take it in favor of having some other benefits of working on Mac OS. :)
Docker / containers / microservices has been a buzz words to me (from sessions in conferences, different blog posts, buddy in the company who have had hands-on experience with Docker - Klavs Prieditis) for a several years, but I never managed to discover these things more. And then few weeks ago somewhere on the Internet :) I ran into this MSDN post about running SQL Server 2017 container with Docker which reminded me that would be nice to test these things. Finally the last thing which nailed it all was a message from another workmate in Geta Valdis Iljuconoks about the new lightweight SQL tool by Microsoft which can be run on Mac OS.
So these are basically the reasons why I felt it was right time for me to try all these pieces stiching together and to see if I could get more freedom of Windows & Parallels Desktop. Turned out it was easy to set up everything -> it is easy to use -> it performs much faster than on Parallels VM -> I'm happy -> I want to tell about this to others! :)
As I mentioned before I rely on Parallels Desktop VM to run SQL Server local instance. That means I have to start my Windows VM every time I need to access some local database which takes some time obviously as well as running software on VM is not as resource-efficient as running similar software on native OS.
Besides that SQL Server Management Studio (which I used before to connect to my local SQL databases) alone is a rather heavy piece of software, which is often more than you need to do a basic tasks with SQL Server e.g. run basic table queries, create new users, grant permissions etc.
That's a rather straightforward installation process, just follow the installation instructions on Docker site. When you have completed installation you must have Docker whale icon visible in Mac OS menu bar.
You can verify that Docker CLI is also successfully installed by running
docker version command.
Again, this is also very simple (even without any previous Docker knowledge) if you follow the MSDN post.
Pull the SQL Server image from Docker Hub.
I was totally fine with the latest SQL version so I went with that.
sudo docker pull microsoft/mssql-server-linux:2017-latest
Btw, really sweet progress bar for Docker CLI. :)
Run container image on your Docker engine.
I did some parameter value adjustments in the
docker run comand (e.g. container name, SQL password) and also added shared folder mapping option my from host OS. It's good to have shared folder mapped when you would like to transfer some files into docker container. In my case I realized that I need it for copying db backup file and later restoring a db from it.
docker run \ --name sarbis-mac-sql \ --volume /Users/sarbis/Desktop/DockerShared:/HostShared \ --env 'ACCEPT_EULA=Y' \ --env 'MSSQL_SA_PASSWORD=password' \ --publish 1401:1433 \ --detach microsoft/mssql-server-linux:2017-latest
As I wrote before one of the main reasons of my excitement about this all was release of SQL Operations Studio for Mac OS which is a free SQL Server tool that runs on Mac OS. I find it very good for doing basic everyday tasks (from web developer perspective) because of simplicity and having GUI.
Before SQL Operations Studio I was sometimes using also mssql extension for VS Code which also runs on Mac OS but in comparison lacks nicer GUI for switching databases and SQL servers, restoring databases. Nevertheless it can be handy if you don't have to work with SQL Server often and not with many different servers and databases. I feel like SQL Operations Studio is a nice alternative for me between comprehensive SQL Server Management Studio and VS Code in terms of simplicity and functionality features.
So now you can connect to the local SQL Server instance running on Docker by specifying a server name (localhost) and a port number (1401) what you specified in the
docker run command previously.
Woohoo! You are finally connected to SQL Server instance running on Mac Docker container and using SQL tool running natively on Mac OS too. :)
You can now either create new db from script or restore it by first copying backup file into mapped Docker folder and then selecting the db backup file in Restore dialog of SQL Operations Studio.
Just wanted to note that there is also SQL Server Command Line Tools for Mac which is another relatively new SQL tool from Microsoft which is now available for Mac OS (in preview version though). It is yet another evidence that .NET stack developers are slowly "set free" of having to use Windows.
sqlcmd can be installed via the Homebrew package manager which (as many Mac users probably already know) is really handy tool for easy beer brewing installation of various applications from Terminal.
At first link the sqlcmd git repository with
brew tap command.
brew tap microsoft/mssql-preview https://github.com/Microsoft/homebrew-mssql-preview`
Then simply install the software with
brew install –no-sandbox msodbcsql mssql-tools
Now you can connect to your SQL Server with sqlcmd command line utility from Mac OS Terminal.
sqlcmd -S localhost,1401 -U sa -P password
And even run a SQL query! :)
To wrap this up I could say that with rather small effort it is possible to set up OS-independent SQL Server instance, which can be easily stopped, transferred to other environment, ran together with other versions / instances of SQL server etc. Docker provides a lot of isolation and flexibility and makes life much easier for many developers (not only for those who are on Mac OS) epsecially when there are sufficient SQL tools which are free and can run on their OS.