There was a question this morning on the SQL Server Community Slack channel from SvenLowry about how to launch SQL Server on Linux in Single User Mode. Well you’ve heard everyone say, it’s just SQL Server…and that’s certainly true and this is another example of that idea.
The command line parameters from the sqlservr binary are passed through into the SQLPAL managed Win32 SQL Process. So let’s check out how to do this together…
New Pluralsight Course – SQL Server on Linux Administration Fundamentals
My new course **“SQL Server on Linux Administration Fundamentals”** in now available on Pluralsight <a href="https://www.pluralsight.com/courses/sql-linux-administration-fundamentals">here</a>! If you want to learn about the course, check out the trailer <a href="https://www.pluralsight.com/player?name=a0d5ed59-1d43-4233-ae90-b5b391e8d43d&mode=live&clip=0&course=sql-linux-administration-fundamentals">here</a> or if you want to dive right in check it out <a href="https://www.pluralsight.com/courses/sql-linux-administration-fundamentals">here</a>!
This course targets DBAs that design and maintain SQL Server on Linux systems (or those evaluating the technology). This course can be used by both the seasoned DBA to learn foundational Linux skills and also what’s new and different when running SQL Server on Linux.
**Course Description**
SQL Server is available on Linux, and management wants you to leverage this shift in technology to more effectively manage your data platform. In this course, SQL Server on Linux Administration Fundamentals, you’ll delve into SQL on Linux in order for you to become an effective DBA. First, you'll explore an overview of its architecture, installation, and configuration. Next, you'll learn how to administer SQL Server on Linux. Finally, you'll discover high availability and disaster recovery options available to you for keeping your SQL Server online. By the end of this course, you'll have a solid foundation necessary to utilize SQL Server on Linux in production.
The modules of the course are:
<ul>
<li>
**Introduction and SQL Server Architecture** – Introduce the viewer into world of SQL Server on Linux. Why did Microsoft do this? What’s the strategy? Introduce the SQL Server Ecosphere, such as the database engine, SQL Server Agent and SSIS.
</li>
<li>
**Installing and Configuring SQL Server on Linux** – We’ll look at our installation and configuration options for SQL Server on Linux, introducing Linux package managers and repositories and install SQL Server on Linux and it’s components.
</li>
<li>
**Administering Linux for DBAs** – We’ll look at managing services with systemd and how to query journald’s log files for information about SQL Server. Also dive into file ownership, disk partitioning concepts and mounting file systems and remote file systems.
</li>
<li>
**Managing SQL Server on Linux: Administration and Tools** – Now that the viewer knows where things are in this new operating system, let’s move up the stack and look at the tooling available for SQL Server on Linux. We’ll cover VS Code, SSMS, SQLCMD and DBFS.
</li>
<li>
**High Availability and Disaster Recovery with SQL Server on Linux** – Dive into the High Availability and Disaster Recovery options available to SQL Server on Linux<br />
</li>
</ul>
<a href="https://www.pluralsight.com/courses/sql-linux-administration-fundamentals"><img loading="lazy" style="display: block; margin-left: auto; margin-right: auto;" title="pluralsight_logo_new_blck.jpg" src="/images/2016/04/pluralsight_logo_new_blck-1.jpg" alt="Pluralsight Redhat Linux" width="225" height="18" border="0" /></a>
Check out the course at <a href="https://www.pluralsight.com/courses/sql-linux-administration-fundamentals">Pluralsight</a>!
In this blog post we’re going to cover systemd, process exit codes and highlight how systemd reacts in certain exit conditions from SQL Server on Linux. My friend and SQL Server guru Argenis Fernandez – @dbargenis asked about this behavior on Twitter and I’ve been meaning to write this post, so here you go! Also, there’s a Connect item filed by Argenis on this here. Vote!
Systemd is an initialization daemon, it’s job is to bring the system to usable state. Meaning, it’s responsible for the orderly starting of services on a Linux system. It does much more than that, in fact, one of it’s other core components is journald. Journald stores logging information from systemd units.
PASS Summit is right around the corner and I’ll be there speaking on Monitoring Linux Performance for the SQL Server Admin!
There’s a fantastic amount of SQL Server on Linux content available at Summit. I encourage you to attend one of these sessions. You’ll likely find me at all of these!
In this blog post we’re going to explore how SQL Server on Linux responds to external memory pressure. On Windows based SQL Server systems we’ve become accustomed to the OS signaling to SQL Server that there’s a memory shortage. When signaled, SQL Server will kindly start shrinking it’s memory caches, including the buffer pool, to maintain overall system stability and usability. We’ll that story is a little different in SQL Server on Linux…let’s look and see how SQL Server on Linux responds to external memory pressure
I’m proud to announce that I will be delivering two sessions at IT/Dev Connections in San Francisco! This is my second year at IT/Dev Connections, real content for IT pros!
Tuesday, 10/24/2017: 1:15 pm – 2:30 pm
Room: Contiental 7
Abstract
Once data leaves your SQL Server do you know what happens or is the world of networking a black box to you? Would you like to know how data is packaged up and transmitted to other systems and what to do when things go wrong? Are you tired of being frustrated with the network team? In this session we introduce how data moves between systems on networks and TCP/IP internals. We’ll discuss real world scenarios showing you how your network’s performance impacts the performance of your SQL Server and even your recovery objectives.
My new course “LFCE: Linux Service Management – 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 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
Earlier this week Ned Otter (@NedOtter) brought up a question about Instant File Initialization on SQL Server on Linux, check out the thread here. I was up way too early in the morning, as I normally am, so I decided to poke around and see how it was done. SQL Server pros, here you can see you can get some deep internal information from the OS very easily. Hopefully with this blog post you’ll be able to compare how this is done on Windows and draw the connections between the two platforms and leverage this technique in other areas.
So I’ve been using dbatools for automated restore tasks and came across a SQL Server Agent job that I wrote that was reporting success but the job was actually failing.
What I found was the function I used, Restore-DbaDatabase, was not able to access the path that I was trying to restore databases from. The Restore-DbaDatabase function, and all dbatools functions according to the dbatools team on Slack, will throw a Warning rather than an Error by design.
A few weeks back several SQL Server bloggers discussed their academic pasts…well here I’m going to let you in on a little secret of mine too. I failed out of college too. I was a Management Information Systems major and limped along with a 1.82 GPA before I got tossed from The University of Mississippi in 1999.
Fast forward a few years, in 2002 I went back to school at Benedictine University in Lisle Illinois to study Computer Science. There I finished my Bachelors degree in 2005 with a 3.98 GPA graduated with honors. I was fortunate to learn from a collection of retied Lucent engineers…and if you know the history of corporate research…Bell Labs engineers. It was an unbelievable educational experience. And they were cool too, we watched the 2004 Cubs in the classroom that fateful night Steve Bartman got a little too ambitious around a foul ball.