Welcome to… An Introduction to SQL Server & Containers

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Andrew Pruski @DBAFromTheCold dbafromthecold@gmail.com www.dbafromthecold.com SQL Server DBA for 6 years Working with RDBMS for ~10 years Working with containers for about two years now Originally from Wales, now living in Dublin

Session Aim To give you a base of knowledge to be able to start to experimenting with containers

Docker & Microsoft Announced partnership in 2014 http://news.microsoft.com/2014/10/15/DockerPR/ Containers supported in Windows Server 2016 & Windows 10 Anniversary Edition

Agenda Container theory Setup of Windows Server 2016 for containers Building your first container Creating a custom container image Exporting a custom image Pushing custom image to the Docker Hub Implementing containers – case study

Container Definition Containers wrap a piece of software in a complete filesystem that contains everything needed to run: code, runtime, system tools, system libraries – anything that can be installed on a server. This guarantees that the software will always run the same, regardless of its environment. https://www.docker.com/what-docker

Container fundamentals Container Host Container Engine Container Registry Container Images

Container Types Windows Server Containers Hyper-V containers Isolation provided through namespace, resource & process isolation Share kernel with host and other containers Hyper-V containers Expand on isolation from windows server containers Run inside of a specialised virtual machine Does not share a kernel with host Specified at runtime with --isolation=hyperv switch

Virtual Machines vs Containers

Container Networking

Pros Simple and fast setup New containers can be spun up in seconds Relatively low footprint compared to VMs Ability to customise images Access to Docker repository (hundreds of images available) Portability, images can be saved to the Docker Hub

Cons Only the database engine is supported Only supported on Windows Server 2016 / Windows 10 Anniversary Edition Official SQL Server images for 2016 & 2017 only SQL images aren't the smallest (~13GB) Suitability for production?

Getting started

Installing the Docker engine Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 –Force Install-Module -Name DockerMsftProvider –Force Install-Package -Name docker -ProviderName DockerMsftProvider –Force Restart-Computer -Force

Containers server feature enabled

Docker Engine Service Get-Service docker docker version

Azure Custom image available with container role enabled and docker engine installed

Windows 10 Download .msi https://store.docker.com/

Linux - Ubuntu https://docs.docker.com/engine/installation/linux/docker-ee/ubuntu/#install- using-the-repository git clone https://github.com/dbafromthecold/InstallDockerOnUbuntu.git cd InstallDockerOnUbuntu chmod +x installdocker.sh ./installdocker.sh

Demo

Creating your first container

Search the Docker repository docker search microsoft/mssql

Pull an image docker pull microsoft/mssql-server-windows

Verify the image docker images

Create container from image docker run –d –p 15789:1433 --env ACCEPT_EULA=Y --env SA_PASSWORD=Testing11@@ --name MyFirstContainer microsoft/mssql-server-windows

Verify container is running docker ps [-a]

Connecting to your container - locally docker inspect MyFirstContainer

Connecting to your container - remotely

Demo

Using DockerFiles

DockerFiles A file on the docker host that contains commands that create a custom image

Dockerfile code FROM microsoft/mssql-server-windows RUN powershell -Command (mkdir C:\\SQLServer) COPY DatabaseA.mdf C:\\SQLServer COPY DatabaseA_log.ldf C:\\SQLServer ENV SA_PASSWORD=Testing11@@ ENV ACCEPT_EULA=Y ENV attach_dbs="[{'dbName':'DatabaseA','dbFiles':['C:\\SQLServer\\DatabaseA.mdf','C:\\SQLServer\\DatabaseA_log.ldf']}]"

Building image from a Dockerfile docker build –t myfirstimage .

Verify new custom image docker images

Creating container from custom image docker run –d –p 15777:1433 --name MyCustomContainer myfirstimage

Database within custom container

Demo

Sharing images

Sharing images locally docker save –o myexportedimage.tar myfirstimage

Importing images docker load -i myexportedimage.tar

The Docker Hub https://hub.docker.com

Creating your repository

Tagging an image docker tag myfirstimage dbafromthecold/testsqlrepository:v1

Log in to Docker hub docker login

Pushing to the Docker Hub docker push dbafromthecold/testsqlrepository:v1

Viewing pushed image in Docker Hub

Demo

Case Study

Problem QA/Dev departments repeatedly creating new VMs All VMs require a local instance of SQL Server SQL installed from chocolately 30+ databases then restored from baselines via PoSH scripts SQL install taking ~40 minutes from start to finish

Solution Containers! Implement containers running SQL Server for new VMs SQL containers built from custom image No longer need to install SQL No longer need to restore databases Resources freed up on VMs

WinDocks www.windocks.com A port of the open source project from Docker Inc. Software supports the creation of containers running earlier versions of SQL Server (2008+) on Windows Server 2012 Free Community Edition available www.windocks.com/leads/add?src=downloadcommunity

Architecture

Benefits New VMs deployed in a fraction of the previous time No longer need to run PoSH scripts to restore databases Base image can be used to keep containers at production SQL instance’s patch level More VMs can be provisioned on host due to each VM requiring less resources

Issues Apps using DNS entries to reference local SQL instance Update to existing test applications Trial and error to integrate with Octopus deploy New ways of thinking

Other Resources

Other SQL Images https://github.com/dbafromthecold/ On the Docker Hub docker search dbafromthecold/sqlserver2012dev docker search dbafromthecold/sqlserver2014dev Code on GitHub https://github.com/dbafromthecold/

Portainer http://portainer.io/ Open source UI Available on Docker Hub

Further Information Summary of Container Series https://dbafromthecold.com/2017/03/15/summary-of-my-container-series/ Case Study on SQLServerCentral.com http://www.sqlservercentral.com/articles/containers/154337/ Podcast with SQL Data Partners http://sqldatapartners.com/2017/01/24/sql-server-containers/ Docker on Windows Server Core https://www.sqlshack.com/running-sql-server-containers-windows-server-2016-core/

Questions?