Run RHEL-based container images All of the documentation on SQL Server Linux container images point to Ubuntu-based containers. Beginning with SQL Server 2019 preview, you can use containers based on Red Hat Enterprise Linux (RHEL). Change the container repository from mcr.microsoft.com/mssql/server:vNext-CTP2.0-ubuntu to mcr.microsoft.com/mssql/rhel/server:vNext-CTP2.0 in all of your docker commands.
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For example, the following command pulls the latest SQL Server 2019 preview container that uses RHEL: sudo docker pull mcr.microsoft.com/mssql/rhel/server:2019-CTP2.2 docker pull mcr.microsoft.com/mssql/rhel/server:2019-CTP2.2. Run production container images The quickstart in the previous section runs the free Developer edition of SQL Server from Docker Hub. Most of the information still applies if you want to run production container images, such as Enterprise, Standard, or Web editions. However, there are a few differences that are outlined here. You can only use SQL Server in a production environment if you have a valid license. You can obtain a free SQL Server Express production license. SQL Server Standard and Enterprise Edition licenses are available through.
Apr 11, 2018 - Docker is now a key part of the release lifecycle here at Jobandtalent. Well) was key to increase efficiency in several aspects of the development delivery process. Space to store the image and less base RAM needed when running it. For avoiding a considerable percentage of increment in image size. HEAD is now at c435935 Settings Changed 09 Jan 17 20:28 +0000. $ cat com.docker.driver.amd64-linux/disk/size 65536. Number is in MiB so.
Production SQL Server container images must be pulled from. If you don't already have one, create an account on Docker Store. The Developer container image on Docker Store can be configured to run the production editions as well. Use the following steps to run production editions:. First, log in to your docker id from the command line. Docker login. Next, you need to obtain the free Developer container image on Docker Store.
Go to, click Proceed to Checkout, and follow the instructions. Review the requirements and run procedures in the. But there are two differences. You must pull the image store/microsoft/mssql-server-linux: from Docker Store. And you must specify your production edition with the MSSQLPID environment variable.
The following example shows how to run the latest SQL Server 2017 container image for the Enterprise Edition: docker run -name sqlenterprise -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -e 'MSSQLPID=Enterprise' -p 1433:1433 -d store/microsoft/mssql-server-linux:2017-latest docker run -name sqlenterprise ` -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' ` -e 'MSSQLPID=Enterprise' -p 1433:1433 ` -d 'store/microsoft/mssql-server-linux:2017-latest'. Note For a full list of possible values for MSSQLPID, see. Connect and query You can connect and query SQL Server in a container from either outside the container or from within the container.
The following sections explain both scenarios. Tools outside the container You can connect to the SQL Server instance on your Docker machine from any external Linux, Windows, or macOS tool that supports SQL connections. Some common tools include:. The following example uses sqlcmd to connect to SQL Server running in a Docker container. The IP address in the connection string is the IP address of the host machine that is running the container.
Sqlcmd -S 10.3.2.4 -U SA -P ' sqlcmd -S 10.3.2.4 -U SA -P ' If you mapped a host port that was not the default 1433, add that port to the connection string. For example, if you specified -p 1400:1433 in your docker run command, then connect by explicitly specify port 1400. Sqlcmd -S 10.3.2.4,1400 -U SA -P ' sqlcmd -S 10.3.2.4,1400 -U SA -P ' Tools inside the container Starting with SQL Server 2017 preview, the are included in the container image. If you attach to the image with an interactive command-prompt, you can run the tools locally. Use the docker exec -it command to start an interactive bash shell inside your running container. In the following example e69e056c702d is the container ID. Docker exec -it e69e056c702d 'bash'.
Tip You don't always have to specify the entire container id. You only have to specify enough characters to uniquely identify it. So in this example, it might be enough to use e6 or e69 rather than the full id. Once inside the container, connect locally with sqlcmd. Note that sqlcmd is not in the path by default, so you have to specify the full path. /opt/mssql-tools/bin/sqlcmd -S localhost -U SA -P '. When finished with sqlcmd, type exit.
When finished with the interactive command-prompt, type exit. Your container continues to run after you exit the interactive bash shell. Run multiple SQL Server containers Docker provides a way to run multiple SQL Server containers on the same host machine. This is the approach for scenarios that require multiple instances of SQL Server on the same host. Each container must expose itself on a different port. The following example creates two SQL Server 2017 containers and maps them to ports 1401 and 1402 on the host machine. Docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1401:1433 -d mcr.microsoft.com/mssql/server:2017-latest docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1402:1433 -d mcr.microsoft.com/mssql/server:2017-latest docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1401:1433 -d mcr.microsoft.com/mssql/server:2017-latest docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1402:1433 -d mcr.microsoft.com/mssql/server:2017-latest.
The following example creates two SQL Server 2019 preview containers and maps them to ports 1401 and 1402 on the host machine. Docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1401:1433 -d mcr.microsoft.com/mssql/server:vNext-CTP2.0-ubuntu docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1402:1433 -d mcr.microsoft.com/mssql/server:vNext-CTP2.0-ubuntu docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1401:1433 -d mcr.microsoft.com/mssql/server:vNext-CTP2.0-ubuntu docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1402:1433 -d mcr.microsoft.com/mssql/server:vNext-CTP2.0-ubuntu Now there are two instances of SQL Server running in separate containers. Clients can connect to each SQL Server instance by using the IP address of the Docker host and the port number for the container. Sqlcmd -S 10.3.2.4,1401 -U SA -P ' sqlcmd -S 10.3.2.4,1402 -U SA -P ' sqlcmd -S 10.3.2.4,1401 -U SA -P ' sqlcmd -S 10.3.2.4,1402 -U SA -P ' Create a customized container It is possible to create your own to create a customized SQL Server container.
For more information, see. If you do create your own Dockerfile, be aware of the foreground process, because this process controls the life of the container.
If it exits, the container will shutdown. For example, if you want to run a script and start SQL Server, make sure that the SQL Server process is the right-most command. All other commands are run in the background. This is illustrated in the following command inside a Dockerfile: /usr/src/app/do-my-sql-commands.sh & /opt/mssql/bin/sqlservr If you reversed the commands in the previous example, the container would shutdown when the do-my-sql-commands.sh script completes.
Persist your data Your SQL Server configuration changes and database files are persisted in the container even if you restart the container with docker stop and docker start. However, if you remove the container with docker rm, everything in the container is deleted, including SQL Server and your databases. The following section explains how to use data volumes to persist your database files even if the associated containers are deleted. Important Host volume mapping for Docker on Mac with the SQL Server on Linux image is not supported at this time. Use data volume containers instead.
This restriction is specific to the /var/opt/mssql directory. Reading from a mounted directory works fine. For example, you can mount a host directory using -v on Mac and restore a backup from a.bak file that resides on the host. Use data volume containers The second option is to use a data volume container. You can create a data volume container by specifying a volume name instead of a host directory with the -v parameter. The following example creates a shared data volume named sqlvolume. Note This technique for implicitly creating a data volume in the run command does not work with older versions of Docker.
In that case, use the explicit steps outlined in the Docker documentation,. Even if you stop and remove this container, the data volume persists. You can view it with the docker volume ls command. Docker volume ls If you then create another container with the same volume name, the new container uses the same SQL Server data contained in the volume. To remove a data volume container, use the docker volume rm command.
Warning If you do create backups, make sure to create or copy the backup files outside of the container. Otherwise, if the container is removed, the backup files are also deleted. Execute commands in a container If you have a running container, you can execute commands within the container from a host terminal. To get the container ID run: docker ps To start a bash terminal in the container run: docker exec -ti /bin/bash Now you can run commands as though you are running them at the terminal inside the container. When finished, type exit. This exits in the interactive command session, but your container continues to run.
Important Upgrade is only supported between RC1, RC2, and GA at this time. Verify your databases and data in the new container. Optionally, remove the old container with docker rm. Troubleshooting The following sections provide troubleshooting suggestions for running SQL Server in containers.
Docker command errors If you get errors for any docker commands, make sure that the docker service is running, and try to run with elevated permissions. For example, on Linux, you might get the following error when running docker commands: Cannot connect to the Docker daemon. Is the docker daemon running on this host?
If you get this error on Linux, try running the same commands prefaced with sudo. If that fails, verify the docker service is running, and start it if necessary. Sudo systemctl status docker sudo systemctl start docker On Windows, verify that you are launching PowerShell or your command-prompt as an Administrator. SQL Server container startup errors If the SQL Server container fails to run, try the following tests:. If you get an error such as 'failed to create endpoint CONTAINERNAME on network bridge. Error starting proxy: listen tcp 0.0.0.0:1433 bind: address already in use.' , then you are attempting to map the container port 1433 to a port that is already in use.
This can happen if you're running SQL Server locally on the host machine. It can also happen if you start two SQL Server containers and try to map them both to the same host port.
If this happens, use the -p parameter to map the container port 1433 to a different host port. ```bash docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1400:1433 -d mcr.microsoft.com/mssql/server:vNext-CTP2.0-ubuntu`. ``` ```PowerShell docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -p 1400:1433 -d mcr.microsoft.com/mssql/server:vNext-CTP2.0-ubuntu`. ```. Check to see if there are any error messages from container.
Docker logs e69e056c702d. Make sure that you meet the minimum memory and disk requirements specified in the section of this article. If you are using any container management software, make sure it supports container processes running as root. The sqlservr process in the container runs as root. Review the. Enable dump captures If the SQL Server process is failing inside the container, you should create a new container with SYSPTRACE enabled. This adds the Linux capability to trace a process, which is necessary for creating a dump file on an exception.
The dump file can be used by support to help troubleshoot the problem. The following docker run command enables this capability. Docker run -e 'ACCEPTEULA=Y' -e 'MSSQLSAPASSWORD=' -e 'MSSQLPID=Developer' -cap-add SYSPTRACE -p 1401:1433 -d mcr.microsoft.com/mssql/server:vNext-CTP2.0-ubuntu SQL Server connection failures If you can't connect to the SQL Server instance running in your container, try the following tests:. Make sure that your SQL Server container is running by looking at the STATUS column of the docker ps -a output.
If not, use docker start to start it. If you mapped to a non-default host port (not 1433), make sure you are specifying the port in your connection string.
You can see your port mapping in the PORTS column of the docker ps -a output. For example, the following command connects sqlcmd to a container listening on port 1401: sqlcmd -S 10.3.2.4,1401 -U SA -P ' sqlcmd -S 10.3.2.4,1401 -U SA -P '. If you used docker run with an existing mapped data volume or data volume container, SQL Server ignores the value of MSSQLSAPASSWORD. Instead, the pre-configured SA user password is used from the SQL Server data in the data volume or data volume container.
Verify that you are using the SA password associated with the data you're attaching to. Review the. SQL Server Availability Groups If you are using Docker with SQL Server Availability Groups, there are two additional requirements.
Map the port that is used for replica communication (default 5022). For example, specify -p 5022:5022 as part of your docker run command.
Explicitly set the container host name with the -h YOURHOSTNAME parameter of the docker run command. This host name is used when you configure your Availability Group. If you don't specify it with -h, it defaults to the container ID. SQL Server setup and error logs You can look at the SQL Server setup and error logs in /var/opt/mssql/log. If the container is not running, first start the container. Then use an interactive command-prompt to inspect the logs.
Docker start e69e056c702d docker exec -it e69e056c702d 'bash' From the bash session inside your container, run the following commands: cd /var/opt/mssql/log cat setup.log cat errorlog.
What’s Docker for Mac & for Windows? In March this year, Docker finally announced and released a native support for Mac and Windows.
Docker started with a closed beta, only providing access to a couple of early adopters. Since June 20th, you can get Docker for Mac & Windows in public beta. Therefore you can download Docker for Mac & Windows for free. Though, don’t forget it’s still beta. And according to the official documentation Docker for Windows and Docker for Mac share some common code base, however it seems that Docker for Windows still is a bit more beta. Docker for Mac is a game changer.
Docker for Mac is the latest offering for Mac which runs as a native OS X application and uses xhyve to virtualize the Docker Engine environment and Linux kernel-specific features. Why is this so great?
Because Docker for Mac allows you to easily run Docker as a native app on your Mac. Or as Noah Zoshke: Docker for Mac is a game changer. While you might have encountered a couple of problems and errors with your Docker Toolbox, it seems pretty promising.
And most importantly: No more VirtualBox! You don’t need docker-machine to run Docker for Mac. Docker for Mac vs Docker Toolbox If you’ve already been using Docker via the Docker Toolbox, you might wonder how the native Docker for Mac influences your existing projects.
Before installing Docker for Mac, I’d recommend checking out of Docker for Mac vs Docker Toolbox. Basically, you can use Docker for Mac and Docker Toolbox together on the same machine. Docker’s official documentation recommends making sure that all Docker environment variables are unset (see detailed installation process below). Installing Docker for Mac So, first things first. In order to get started, you need to download Docker for Mac:.
Docker for Mac Be aware, that it still is in public beta, and Docker claims that some functionalities might change before a public release. After you’ve downloaded the file, you’ll see that it’s the standard installation process, similar to a lot of other OS X applications. You simply execute the.dmg file and you’ll drag the Docker app in your applications folder. Docker might ask you for some root permissions to install some things. After you’re done with the installation process, a little helper will appear in the OS X bar. You’re good to go now.
Docker is up and running. If you’re now opening up your terminal (and you’ve been using Docker Toolbox before) you might run into the same problem as I did. If you run docker-compose up you might experience this conflict with your Docker Toolbox (see screenshot below). It looked like Docker for Mac had some problems, due to my installed Docker toolbox. In a first step you need to check whether Toolbox DOCKER environment variables are set.
$ env grep DOCKER If this command returns no output, you are ready to use Docker. If it returns an output (as shown in my screenshot above), you need to unset the DOCKER environment variables. You can do that by running the following command: unset DOCKERTLSVERIFY unset DOCKERCERTPATH unset DOCKERMACHINENAME unset DOCKERHOST As you can see in the screenshot above, unsetting the variables enabled me to start building Hugo. Running containers on the local host network Docker for Mac also includes a DNS server for containers. And if you’re using Docker in a corporate environment with a restrictive VPN, the good news is that Docker for Mac works there too.
Uninstalling old Docker files and apps I’ve been using the Docker Toolbox for more than a year now. And in this time I collected quite a lot of files and stuff, which are now replaced by Docker for Mac. So, I’ve been pretty excited to uninstall the following files and apps:. Docker Toolbox (Docker Machine, Docker Quickstart Terminal, Kitematic). VirtualBox (with it’s Docker files).
The whole folder.docker (with more than 4.8 GB of size). The folder.boot2docker Summary We have been using the Docker Toolbox for the last 12 months or so and are now pretty excited about Docker for Mac! The installation was pretty smoothly and we’ve seen a lot of advantages of using Docker for Mac compared to Docker Toolbox.
However, there might appear some glitches as Docker for Mac is in beta. Here’s a quick summary with the best benefits of using Docker for Mac:.
Pretty smooth and simple installation process. No more VirtualBox!. No problems with virtual machines, filesystems or other bugs you might have encountered with the Docker Toolbox. Fast mount volumes of host file system (file change detection now also works inside docker machines!). So far Docker on Mac behaves like Docker on Linux (which means NO more custom versions of scripts for Mac!). If you’ve been using the Docker Toolbox, you can uninstall a lot of stuff!. This post originally appeared on loige.co, written by Luciano Mammino.
Luciano is a web developer & entrepreneur from Italy. In this article, Luciano highlighted some of the most common principles you should consider while building high performing web applications (specifically on the backend part). The following concepts discussed here can be applied to any language and framework. This article is brought to you by Usersnap, a bug tracker and feedback tool that helps you to communicate visually. Get a 15-day free trial here. We have just entered year 2016 and it’s already a couple of days old.
Just before New Year’s Eve, I showed you our take on the year 2015 in. With the rise of cheap VPS (Virtual Private Server) services and the increase of complexity in the architecture of new web applications, deployment processes are becoming a very important topic and a skill to master to some extent. Long gone the days when we just needed a cheap hosting service and an FTP access to. This article was brought to you by Usersnap – a visual feedback & bug tracking tool, used by software companies like Facebook, Google, and Microsoft. Get your free 15-day trial, too.
Recently I’ve present you a collection of the best web development blogs and podcasts available. If you’re like me and more like an inbox. This article is brought to you by Usersnap, a bug tracker and feedback tool that helps you to communicate visually. Get a 15-day free trial here. When you’re starting out, going to university or starting to work in your first full-time job, you feel like you can handle anything. You want to be a good. Oh boy, it’s been a crazy week.
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A couple of days ago, we went live with our new website. The process to bringing our website live has been an incredible awesome roller coaster ride with so many learnings and insights.