Quickstart: Run SQL Server Linux container images with Docker

Applies to: SQL Server - Linux

In this quickstart, you use Docker to pull and run the SQL Server 2022 (16.x) Linux container image, mssql-server-linux. Then you can connect with sqlcmd to create your first database and run queries.

For more information on supported platforms, see Release notes for SQL Server 2022 on Linux.

Warning

When you stop and remove a container, your SQL Server data in the container is permanently deleted. For more information on preserving your data, create and copy a backup file out of the container or use a container data persistence technique.

This quickstart creates SQL Server 2022 (16.x) containers. If you prefer to create Linux containers for different versions of SQL Server, see the SQL Server 2017 (14.x) or SQL Server 2019 (15.x) versions of this article.

This image consists of SQL Server running on Linux based on Ubuntu. It can be used with the Docker Engine 1.8+ on Linux.

Starting with SQL Server 2022 (16.x) CU 14 and SQL Server 2019 (15.x) CU 28, the container images include the new mssql-tools18 package. The previous directory /opt/mssql-tools/bin is being phased out. The new directory for Microsoft ODBC 18 tools is /opt/mssql-tools18/bin, aligning with the latest tools offering. For more information about changes and security enhancements, see ODBC Driver 18.0 for SQL Server Released.

The examples in this article use the docker command. However, most of these commands also work with Podman. Podman provides a command-line interface similar to the Docker Engine. You can find out more about Podman.

Important

sqlcmd doesn't currently support the MSSQL_PID parameter when creating containers. If you use the sqlcmd instructions in this quickstart, you create a container with the Developer edition of SQL Server. Use the command line interface (CLI) instructions to create a container using the license of your choice. For more information, see Deploy and connect to SQL Server Linux containers.

Prerequisites

• Docker Engine 1.8+ on any supported Linux distribution. For more information, see Install Docker.

• For more information on hardware requirements and processor support, see SQL Server 2022: Hardware and software requirements

• Docker overlay2 storage driver. This driver is the default for most users. If you aren't using this storage provider and need to change, see the instructions and warnings in the Docker documentation for configuring overlay2.

• Install the latest sqlcmd on your Docker host.

• At least 2 GB of disk space.

• At least 2 GB of RAM.

• System requirements for SQL Server on Linux.

Pull and run the SQL Server Linux container image

Before starting the following steps, make sure that you select your preferred shell (bash, PowerShell, or cmd) at the top of this article.

For the bash commands in this article, sudo is used. If you don't want to use sudo to run Docker, you can configure a docker group and add users to that group. For more information, see Post-installation steps for Linux.

CLI

Pull the container from the registry

Pull the SQL Server 2022 (16.x) Linux container image from the Microsoft Container Registry.

docker pull mcr.microsoft.com/mssql/server:2022-latest

docker pull mcr.microsoft.com/mssql/server:2022-latest

docker pull mcr.microsoft.com/mssql/server:2022-latest

This quickstart creates SQL Server 2022 (16.x) containers. If you prefer to create Linux containers for different versions of SQL Server, see the SQL Server 2017 (14.x) or SQL Server 2019 (15.x) versions of this article.

The previous command pulls the latest SQL Server 2022 (16.x) Linux container image. If you want to pull a specific image, you add a colon and the tag name, such as mcr.microsoft.com/mssql/server:2022-GA-ubuntu. To see all available images, see the Microsoft Artifact Registry.

Run the container

To run the Linux container image with Docker, you can use the following command from a bash shell or elevated PowerShell command prompt.

Important

The SA_PASSWORD environment variable is deprecated. Use MSSQL_SA_PASSWORD instead.

docker run -e "ACCEPT_EULA=Y" -e "MSSQL_SA_PASSWORD=<password>" \
   -p 1433:1433 --name sql1 --hostname sql1 \
   -d \
   mcr.microsoft.com/mssql/server:2022-latest

If you're using PowerShell Core, replace the double quotes with single quotes.

docker run -e "ACCEPT_EULA=Y" -e "MSSQL_SA_PASSWORD=<password>" `
   -p 1433:1433 --name sql1 --hostname sql1 `
   -d `
   mcr.microsoft.com/mssql/server:2022-latest

docker run -e "ACCEPT_EULA=Y" -e "MSSQL_SA_PASSWORD=<password>" `
   -p 1433:1433 --name sql1 --hostname sql1 `
   -d `
   mcr.microsoft.com/mssql/server:2022-latest

Caution

Your password should follow the SQL Server default password policy. By default, the password must be at least eight characters long and contain characters from three of the following four sets: uppercase letters, lowercase letters, base-10 digits, and symbols. Passwords can be up to 128 characters long. Use passwords that are as long and complex as possible. If you don't follow these password requirements, the container can't set up SQL Server, and stops working. You can examine the error log by using the docker logs command.

By default, this quickstart creates a container with the Developer edition of SQL Server. The process for running production editions in containers is slightly different. For more information, see Run production container images.

The following table provides a description of the parameters in the previous docker run example:

Parameter	Description
-e "ACCEPT_EULA=Y"	Set the ACCEPT_EULA variable to any value to confirm your acceptance of the End-User Licensing Agreement. Required setting for the SQL Server image.
-e "MSSQL_SA_PASSWORD=<password>"	Specify your own strong password that is at least eight characters and meets the Password Policy. Required setting for the SQL Server image.
-e "MSSQL_COLLATION=<SQL_Server_collation>"	Specify a custom SQL Server collation, instead of the default SQL_Latin1_General_CP1_CI_AS.
-p 1433:1433	Map a TCP port on the host environment (first value) with a TCP port in the container (second value). In this example, SQL Server is listening on TCP 1433 in the container and this container port is then exposed to TCP port 1433 on the host.
--name sql1	Specify a custom name for the container rather than a randomly generated one. If you run more than one container, you can't reuse this same name.
--hostname sql1	Used to explicitly set the container hostname. If you don't specify the hostname, it defaults to the container ID, which is a randomly generated system GUID.
-d	Run the container in the background (daemon).
mcr.microsoft.com/mssql/server:2022-latest	The SQL Server Linux container image.

Change the system administrator password

The system administrator (sa) account is a system administrator on the SQL Server instance that gets created during setup. After you create your SQL Server container, the MSSQL_SA_PASSWORD environment variable you specified is discoverable by running echo $MSSQL_SA_PASSWORD in the container. For security purposes, you should change your sa password in a production environment.

1. Choose a strong password to use for the sa account. Your password should follow the SQL Server default password policy. By default, the password must be at least eight characters long and contain characters from three of the following four sets: uppercase letters, lowercase letters, base-10 digits, and symbols. Passwords can be up to 128 characters long. Use passwords that are as long and complex as possible.

2. Use docker exec to run sqlcmd to change the password using Transact-SQL. In the following example, the old and new passwords are read from user input.

   docker exec -it sql1 /opt/mssql-tools18/bin/sqlcmd \
   -S localhost -U sa \
    -P "$(read -sp "Enter current SA password: "; echo "${REPLY}")" \
    -Q "ALTER LOGIN sa WITH PASSWORD=\"$(read -sp "Enter new SA password: "; echo "${REPLY}")\""
   

   docker exec -it sql1 /opt/mssql-tools18/bin/sqlcmd `
      -S localhost -U sa -P "<password>" `
      -Q "ALTER LOGIN sa WITH PASSWORD='<new-password>'"
   

   docker exec -it sql1 /opt/mssql-tools18/bin/sqlcmd `
      -S localhost -U sa -P "<password>" `
      -Q "ALTER LOGIN sa WITH PASSWORD='<new-password>'"
   

   Caution

   Your password should follow the SQL Server default password policy. By default, the password must be at least eight characters long and contain characters from three of the following four sets: uppercase letters, lowercase letters, base-10 digits, and symbols. Passwords can be up to 128 characters long. Use passwords that are as long and complex as possible.

   Recent versions of sqlcmd are secure by default. For more information about connection encryption, see sqlcmd utility for Windows, and Connecting with sqlcmd for Linux and macOS. If the connection doesn't succeed, you can add the -No option to sqlcmd to specify that encryption is optional, not mandatory.

Disable the SA account as a best practice

Important

You'll need these credentials for later steps. Be sure to write down the user ID and password that you enter here.

When you connect to your SQL Server instance using the system administrator (sa) account for the first time after installation, it's important for you to follow these steps, and then immediately disable the sa account as a security best practice.

1. Create a new login, and make it a member of the sysadmin server role.

   • Depending on whether you have a container or non-container deployment, enable Windows authentication, and create a new Windows-based login and add it to the sysadmin server role.

     • Tutorial: Use adutil to configure Active Directory authentication with SQL Server on Linux

     • Tutorial: Configure Active Directory authentication with SQL Server on Linux containers

   • Otherwise, create a login using SQL Server authentication, and add it to the sysadmin server role.

2. Connect to the SQL Server instance using the new login you created.

3. Disable the sa account, as recommended for security best practice.

sqlcmd

Pull and run the container

Pull and run the SQL Server 2022 (16.x) Linux container image from the Microsoft Container Registry.

sudo sqlcmd create mssql --tag 2022-latest --hostname sql1 --name sql1 --port 1433 --accept-eula

sqlcmd create mssql --tag 2022-latest --hostname sql1 --name sql1 --port 1433 --accept-eula

sqlcmd create mssql --tag 2022-latest --hostname sql1 --name sql1 --port 1433 --accept-eula

This quickstart creates SQL Server 2022 (16.x) containers. If you prefer to create Linux containers for different versions of SQL Server, see the SQL Server 2017 (14.x) or SQL Server 2019 (15.x) versions of this article.

The previous command pulls the latest SQL Server 2022 (16.x) Linux container image. If you want to pull a specific image, change the tag name, such as 2022-CU11-ubuntu-22.04. To see all available images, run the following command:

sudo sqlcmd create mssql get-tags

sqlcmd create mssql get-tags

sqlcmd create mssql get-tags

By default, this quickstart creates a container with the Developer edition of SQL Server. The process for running production editions in containers is slightly different. For more information, see Run production container images.

The following table provides a description of the parameters in the previous docker run example:

Parameter	Description
--ACCEPT-EULA	Include the --ACCEPT-EULA flag to confirm your acceptance of the End-User Licensing Agreement. Required setting for the SQL Server image.
--port 1433	Map a TCP port on the host environment and a TCP port in the container. In this example, SQL Server is listening on TCP 1433 in the container and this container port is then exposed to TCP port 1433 on the host.
--name sql1	Specify a custom name for the container rather than a randomly generated one. If you run more than one container, you can't reuse this same name.
--hostname sql1	Used to explicitly set the container hostname. If you don't specify the hostname, it defaults to the container ID, which is a randomly generated system GUID.
--tag 2022-latest	The SQL Server Linux container image.

sqlcmd disables the sa password and creates a new login based on the current user when it creates a container. Use the following command to view your login information. You need it in later steps.

sudo sqlcmd config view --raw

sqlcmd config view --raw

sqlcmd config view --raw

View list of containers

1. To view your Docker containers, use the docker ps command.

   docker ps -a
   

   docker ps -a
   

   docker ps -a
   

   You should see output similar to the following example:

   CONTAINER ID   IMAGE                                        COMMAND                    CREATED         STATUS         PORTS                                       NAMES
   d4a1999ef83e   mcr.microsoft.com/mssql/server:2022-latest   "/opt/mssql/bin/perm..."   2 minutes ago   Up 2 minutes   0.0.0.0:1433->1433/tcp, :::1433->1433/tcp   sql1
   

2. If the STATUS column shows a status of Up, then SQL Server is running in the container and listening on the port specified in the PORTS column. If the STATUS column for your SQL Server container shows Exited, see Troubleshoot SQL Server Docker containers. The server is ready for connections once the SQL Server error logs display the message: SQL Server is now ready for client connections. This is an informational message; no user action is required. You can review the SQL Server error log inside the container using the command:

   docker exec -t sql1 cat /var/opt/mssql/log/errorlog | grep connection
   

   The --hostname parameter, as discussed previously, changes the internal name of the container to a custom value. This value is the name you see returned in the following Transact-SQL query:

   SELECT @@SERVERNAME,
          SERVERPROPERTY('ComputerNamePhysicalNetBIOS'),
          SERVERPROPERTY('MachineName'),
          SERVERPROPERTY('ServerName');
   

   Setting --hostname and --name to the same value is a good way to easily identify the target container.

Connect to SQL Server

The following steps use the SQL Server command-line tool, sqlcmd utility, inside the container to connect to SQL Server.

1. Use the docker exec -it command to start an interactive bash shell inside your running container. In the following example, sql1 is name specified by the --name parameter when you created the container.

   docker exec -it sql1 "bash"
   

   docker exec -it sql1 "bash"
   

   docker exec -it sql1 "bash"
   

1. Once inside the container, connect locally with sqlcmd, using its full path.

   /opt/mssql-tools18/bin/sqlcmd -S localhost -U <userid> -P "<password>"
   

   Recent versions of sqlcmd are secure by default. For more information about connection encryption, see sqlcmd utility for Windows, and Connecting with sqlcmd for Linux and macOS. If the connection doesn't succeed, you can add the -No option to sqlcmd to specify that encryption is optional, not mandatory.

   You can omit the password on the command-line to be prompted to enter it. For example:

   /opt/mssql-tools18/bin/sqlcmd -S localhost -U <userid>
   

1. If successful, you should get to a sqlcmd command prompt: 1>.

Create and query data

The following sections walk you through using sqlcmd and Transact-SQL to create a new database, add data, and run a query.

Create a new database

The following steps create a new database named TestDB.

1. From the sqlcmd command prompt, paste the following Transact-SQL command to create a test database:

   CREATE DATABASE TestDB;
   

2. On the next line, write a query to return the name of all of the databases on your server:

   SELECT name
   FROM sys.databases;
   

3. The previous two commands weren't run immediately. Type GO on a new line to run the previous commands:

   GO
   

Insert data

Next create a new table, Inventory, and insert two new rows.

1. From the sqlcmd command prompt, switch context to the new TestDB database:

   USE TestDB;
   

2. Create new table named Inventory:

   CREATE TABLE Inventory
   (
       id INT,
       name NVARCHAR (50),
       quantity INT
   );
   

3. Insert data into the new table:

   INSERT INTO Inventory
   VALUES (1, 'banana', 150);
   
   INSERT INTO Inventory
   VALUES (2, 'orange', 154);
   

4. Type GO to run the previous commands:

   GO
   

Select data

Now, run a query to return data from the Inventory table.

1. From the sqlcmd command prompt, enter a query that returns rows from the Inventory table where the quantity is greater than 152:

   SELECT *
   FROM Inventory
   WHERE quantity > 152;
   

2. Run the command:

   GO
   

Exit the sqlcmd command prompt

1. To end your sqlcmd session, type QUIT:

   QUIT
   

2. To exit the interactive command-prompt in your container, type exit. Your container continues to run after you exit the interactive bash shell.

Connect from outside the container

CLI

You can also connect to the SQL Server instance on your Docker machine from any external Linux, Windows, or macOS tool that supports SQL connections. The external tool uses the IP address for the host machine.

The following steps use sqlcmd outside of your container to connect to SQL Server running in the container. These steps assume that you already have the SQL Server command-line tools installed outside of your container. The same principles apply when using other tools, but the process of connecting is unique to each tool.

1. Find the IP address for your container's host machine, using ifconfig or ip addr.

2. For this example, install the sqlcmd tool on your client machine. For more information, see sqlcmd utility or Install the SQL Server command-line tools sqlcmd and bcp on Linux.

3. Run sqlcmd specifying the IP address and the port mapped to port 1433 in your container. In this example, the port is the same as port 1433 on the host machine. If you specified a different mapped port on the host machine, you would use it here. You also need to open the appropriate inbound port on your firewall to allow the connection.

   Recent versions of sqlcmd are secure by default. If the connection doesn't succeed, and you're using version 18 or higher, you can add the -No option to sqlcmd to specify that encryption is optional, not mandatory.

   sudo sqlcmd -S <ip_address>,1433 -U <userid> -P "<password>"
   

   sqlcmd -S <ip_address>,1433 -U <userid> -P "<password>"
   

   sqlcmd -S <ip_address>,1433 -U <userid> -P "<password>"
   

   Caution

   Your password should follow the SQL Server default password policy. By default, the password must be at least eight characters long and contain characters from three of the following four sets: uppercase letters, lowercase letters, base-10 digits, and symbols. Passwords can be up to 128 characters long. Use passwords that are as long and complex as possible.

4. Run Transact-SQL commands. When finished, type QUIT.

sqlcmd

You can also connect to the SQL Server instance on your Docker machine from any external Linux, Windows, or macOS tool that supports SQL connections. The external tool uses the IP address for the host machine.

The following steps use sqlcmd outside of your container to connect to SQL Server running in the container. The same principles apply when using other tools, but the process of connecting is unique to each tool.

1. Run sqlcmd in the same session you used to create your container. It keeps track of the connection information via contexts so you can easily connect at any time. sqlcmd config view can be used to view your available contexts.

   sudo sqlcmd
   

   sqlcmd query
   

   sqlcmd query
   

2. Run Transact-SQL commands. When finished, type QUIT.

Other common tools to connect to SQL Server include:

• SQL Server extension for Visual Studio Code
• Use SQL Server Management Studio on Windows to manage SQL Server on Linux
• What is Azure Data Studio?
• mssql-cli (Preview)
• Manage SQL Server on Linux with PowerShell Core

Remove your container

CLI

If you want to remove the SQL Server container used in this tutorial, run the following commands:

docker stop sql1
docker rm sql1

docker stop sql1
docker rm sql1

docker stop sql1
docker rm sql1

sqlcmd

If you want to remove the SQL Server container used in this tutorial, run the following command:

sudo sqlcmd delete --force

sqlcmd delete --force

sqlcmd delete --force

Docker demo

After you finish using the SQL Server Linux container image for Docker, you might want to know how Docker is used to improve development and testing. The following video shows how Docker can be used in a continuous integration and deployment scenario.

Related tasks

• Run multiple SQL Server containers
• Persist your data

Related content

• Restore a SQL Server database in a Linux container
• Troubleshoot SQL Server Docker containers
• mssql-docker GitHub repository

Contribute to SQL documentation

Did you know that you can edit SQL content yourself? If you do so, not only do you help improve our documentation, but you also get credited as a contributor to the page.

For more information, see How to contribute to SQL Server documentation