So in yesterday’s post we learned that the OpenSSH client is included with the Windows 10, Update 1803!  Guess, what else is included in this server, an OpenSSH Server! Yes, that’s right…you can now run an OpenSSH server on your Windows 10 system and get a remote terminal! So in this post, let’s check out what we need to do to get OpenSSH Server up and running.

First, we’ll need to ensure we update the system to Windows 10, Update 1803. Do that using your normal update mechanisms.

Today is a big day! The OpenSSH client version 7.6p1 is now part of the Windows 10 operating system! Microsoft released Windows 10 Update 1803 and included in that release is the OpenSSH client, which is installed as part of the update.

That’s right an SSH client as part of the Windows operating system by default! Also included with this update is the OpenSSH Server which is included as an Windows Feature on Demand.

Speaking at SQLSaturday Atlanta!

  I’m proud to announce that I will be speaking at <a href="https://www.sqlsaturday.com/733">SQL Saturday Atlanta</a> on May 17th 2018! This one won’t let you down! <a href="https://www.sqlsaturday.com/733/Sessions/Schedule.aspx">Check out the amazing schedule</a>!

  If you don’t know what SQLSaturday is, it’s a whole day of free SQL Server training available to you at no cost!

  If you haven’t been to a SQLSaturday, what are you waiting for! <a href="https://www.sqlsaturday.com/733/registernow.aspx">Sign up now</a>!

  My presentation is **“<a href="http://www.sqlsaturday.com/733/Sessions/Details.aspx?sid=71960">Monitoring Linux Performance for the SQL Server Admin</a>” **

  <img style="display: block; margin-left: auto; margin-right: auto;" src="http://www.sqlsaturday.com/images/sqlsat733_header.png" alt="SQLSaturday #733 - Atlanta 2018" />

  Here’s the abstract for the talk

<blockquote>

    So you’re a SQL Server administrator and you just installed SQL Server on Linux. It’s a whole new world. Don’t fear, it’s just an operating system. It has all the same components Windows has and in this session we’ll show you that. We will look at the Linux operating system architecture and show you where to look for the performance data you’re used to! Further we'll dive into SQLPAL and how it architecture and internals enables high performance for your SQL Server. By the end of this session you’ll be ready to go back to the office and have a solid understanding of performance monitoring Linux systems and SQL on Linux. We’ll look at the core system components of CPU, Disk, Memory and Networking monitoring techniques for each and look some of the new tools available including new DMVs and DBFS.Prerequisites: Operating system fundamentals, process, memory and disk concepts.

</blockquote>

Folks in the Linux world are used to moving SSH keys to and from systems enabling password-less authentication. Let’s take a minute to look at what it takes to use PowerShell to distribute SSH user keys to remote systems.

In the OpenSSH package there’s a command ssh-copy-id which is a bash script that copies a user’s public key to a remote system. There’s a little intelligence in the script to set things up properly on the remote system for password-less key based authentication. If the appropriate directory and key file aren’t set up, ssh-copy-id will create the directory and key file with the correct permissions on remote system. As far as I can tell, ssh-copy-id has not been implemented in the Win32-OpenSSH port. So that leaves us with implementing this functionality ourselves, in PowerShell.

My new course “LFCE: Linux Service Management – Advanced HTTP Services” in now available on Pluralsight here! If you want to learn about the course, check out the trailer here or if you want to dive right in check it out here! This course offers practical tips from my experiences building high performance web infrastructure for Centino Systems clients.

This course targets IT professionals that design and maintain RHEL/CentOS based enterprises. It aligns with the Linux Foundation Certified System Administrator (LFCS) and Linux Foundation Certified Engineer (LFCE) and also Redhat’s RHCSA and RHCE certifications. The course can be used by both the IT pro learning new skills and the senior system administrator preparing for the certification exam

I’m proud to announce that I will be speaking at PowerShell + DevOps Global Summit 2018 on the conference runs from April 9th 2018 through April 12th 2018. This is an incredible event packed with fantastic content and speakers. Check out the amazing schedule! All the data you need on going is in this excellent brochure right here!

This year I have two sessions!

On Tuesday, April 10th at 2:00PM – I’m presenting “OpenSSH Internals for PowerShell Pros”

Update - head on over to Andrew Pruski’s blog to find out how to get this to work!

Shawn Melton MVP and dbatools contributor last week had an issue running SQL Server on Linux inside of Windows Subsystem for Linux.

Error trying to configure <a href="https://twitter.com/hashtag/sqlLinux?src=hash&ref_src=twsrc%5Etfw">#sqlLinux</a> on the openSUSE app for Windows 10 <a href="https://t.co/0Eg5TtV0o5">pic.twitter.com/0Eg5TtV0o5</a>

— Shawn Melton (@wsmelton)

<a href="https://twitter.com/wsmelton/status/937565476632358914?ref_src=twsrc%5Etfw">December 4, 2017</a>

I didn’t want to leave a brother hanging so I spent this morning digging into this a little bit.

Over the past year we’ve learned about how SQL Server on Linux is implemented, leveraging SQLPAL and the team is pretty confident in their architectural decisions as indicated in this post here.

Now that there is this wrapper around SQL Server, this really opens up some interesting opportunities…perhaps we can leverage SQLPAL to facilitate some new high availability techniques.

When I was in graduate school, I worked on a research project, that became my master’s thesis. In this work, I developed a technique that synchronized the process address space of a virtual machine on two separate physical hypervisors.The technique involved an initial copy of all pages between the two systems and then selectively copying the virtual machine’s pages as they became dirty. Using this technique, the process address space of the virtual machine is synchronized between the two hypervisors. This allows for a significant reduction in the amount of information that had to be replicated between the hypervisors but more importantly…the virtual machines memory in sync which meant if hypervisor hosting the virtual machine crashed we could theoretically start the virtual machine on the second hypervisor.

On 12/13 I’m presenting two, back to back, sessions on SQL Server on Linux online. So you can attend from anywhere!

Let’s go through both!

First, on 12/13 at 1PM Central, I’m presenting for the PASS Database Administration Virtual Group here’s my session details:

Topic: Linux OS Fundamentals for the SQL Admin

Registration: You must register if you want to attend. You can register at http://dba.pass.org/. When you register, you will receive a link to the meeting. All attendees will be entered into a raffle for a $25 gift card.

Here are my top 5 reasons why I thing SQL Server on Linux is Legit!

1. **SQL Server on Linux is Fast** – Earlier this year SQL Server on Linux posted the fasted 1TB TPC-H benchmark in the world and at the end of October posted the a 10TB result! Check out the results here and some info on how they did it here and here.
2. It’s tunable – From and OS standpoint, I think the “tunability" of the operating system is more well documented and well known on Linux. Check out Microsoft’s recommendations <a href="https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-performance-best-practices">here</a> and also Redhat’s <a href="https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Performance_Tuning_Guide/">here</a>.
3. Features – If you’re a developer in the Linux ecosphere, this is the reason why you’re evaluating using SQL Server on Linux…there’s likely a feature you want…that you can now have. Check them out <a href="https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-editions-and-components-2017">here</a>!
4. Enterprise Support – I like cruising around in forums just like anybody else, but sometimes you have to <a href="https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-overview">call</a> support to bring in the people that actually wrote the software.
5. Availability Solutions – SQL Server has a proven track record for availability, those same concepts and techniques apply to SQL Server on Linux. Backups, Availability Groups, and Failover Clusters <a href="https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-business-continuity-dr">check it out</a>.