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Category: Linux

Connecting To Linux SQL Agent Using Powershell

Published 2017-03-28 by Kevin Feasel

Slava Murygin shows how to connect to a SQL Agent running on Linux using the SqlServer Powershell module:

From this point we will work directly with SQL Server.
In order to establish connection you have to run following script.
The most important are 2nd and third lines:
– In second line you have to provide your SQL Server Instance address, by replacing “<your_server_instance>” by something like “192.168.58.11” or “192.168.58.11\MSSQLSERVER,1433”
– When second line runs it will ask you for SQL Server credentials !!! So, you have to enter SQL user name and it’s password.

Slava does note some limitations at present, but a lot of the functionality seems to be there.

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SQL On Linux Backups

Published 2017-03-23 by Kevin Feasel

Rob Sewell shows how to use Ola Hallengren’s solution to back up SQL Server databases on Linux using the SQL Agent:

Now the jobs are not going to run as they are as they have CmdExec steps and this is not supported in SQL on Linux so we have to make some changes to the steps. As I blogged previously, this is really easy using PowerShell

First we need to grab the jobs into a variable. We will use Get-SQLAgentJobHistory from the sqlserver module which you need to download SSMS 2016 or later to get. You can get it from https://sqlps.io/dl As we are targeting a Linux SQL Server we will use SQL authentication which we will provide via Get-Credential and then take a look at the jobs

It’s not “point, click, done,” but Rob shows you certainly can do it.

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Powershell In Bash: Cursor Issues Fixed

Published 2017-03-13 by Kevin Feasel

Max Trinidad points out that the latest alpha for Powershell in Bash has fixed an annoying display issue:

Finally, the fix we all been waiting for has arrived with the newest release of PowerShell version v6.0.0-alpha.17. Now, when you installed the Ubuntu 16.04.1 version of PowerShell 6 in Bash on Windows 10, it works this time.

Thanks God! No more crazy cursor screen issues going on when you type commands and/or display results.

Max also shows how to install the latest version of Powershell in Bash on Ubuntu in Windows 10.

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Instance Configuration With dbatools

Published 2017-03-01 by Kevin Feasel

Rob Sewell has an interesting post on cross-platform configuration using dbatools in Powershell:

This weekend I set up some SQL vNext virtual machines, two on Windows and one on Linux so that I could test some scenarios and build an availability group.

IMPORTANT NOTE :- The names of dbatools commands with a Sql prefix WILL CHANGE in a later release of dbatools. dbatools will use Dba throughout in the future as the sqlserver PowerShell module uses the Sql prefix

I used PowerShell version 5.1.14393.693 and SQL Server vNext CTP 1.3 running on Windows Server 2016 and Ubuntu 16.04 in this blog post

There’s some fancy footwork in this post; if you’re looking for ways to compare instance configurations (specifically, sp_configure settings), check it out.

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Upgrading SQL On Linux

Published 2017-02-28 by Kevin Feasel

Steve Jones shows how to upgrade SQL Server on Linux to the latest version:

I saw this week that there was a new CTP (v1.3) of SQL Server v.Next. I haven’t had a lot of time to work on the Linux version lately, but I thought I’d try and see how well the upgrade went.

There’s an install and upgrade page at Microsoft you can use, but on Ubuntu, things are easy. First, connect to your system and run this:

sudo apt-get update

That will download updated packages and get the system ready. you can see that I have a lot of stuff to update on this particular system.

One small change I’d make to that script in the snippet is sudo apt-get update && sudo apt-get upgrade.  They do different things, both of which are useful.  I do hope that Microsoft keeps with the Linux-friendly upgrade process when it comes to CUs and SPs.

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SQL Server vNext CTP 1.3 Available

Published 2017-02-20 by Kevin Feasel

The SQL Server team has announced a new CTP:

Key CTP 1.3 enhancement: Always On Availability Groups on Linux

In SQL Server v.Next, we continue to add new enhancements for greater availability and higher uptime. A key design principle has been to provide customers with the same HA and DR solutions on all platforms supported by SQL Server. On Windows, Always On depends on Windows Server Failover Clustering (WSFC). On Linux, you can now create Always On Availability Groups, which integrate with Linux-based cluster resource managers to enable automatic monitoring, failure detection and automatic failover during unplanned outages. We started with the popular clustering technology, Pacemaker.

In addition, Availability Groups can now work across Windows and Linux as part of the same Distributed Availability Group. This configuration can accomplish cross-platform migrations without downtime. To learn more, you can read our blog titled “SQL Server on Linux: Mission Critical HADR with Always On Availability Groups”.

That’s a big headline.  In the Other Enhancements section, I like resumable online index rebuilds as well.

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SQL Server ODBC Driver 13.1 For Linux

Published 2017-02-10 by Kevin Feasel

Meet Bhagdev announces a new version of the SQL Server ODBC driver for Linux:

Added

  • BCP API support

    • You can use functions through the ODBC driver as described here on Linux.

  • Support for user-defined KeyStoreProvider for Always Encrypted

    • You can now user-defined/created AE Column Master Key keystore providers. Check out code samples and more information here.

  • Ubuntu 16.10 support

    • Developed a package Ubuntu 16.10 for an apt-get experience.

  • Dependency on the platform unixODBC Driver Manager instead of the custom unixODBC-utf16 Driver Manager

    • This avoids conflicts with applications/software that depends on the platform unixODBC Driver Manager.

No groundbreaking additions, but there are a couple nice fixes in the update.

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SQL On Linux Connectivity

Published 2017-02-01 by Kevin Feasel

Slava Murygin troubleshoots connectivity issues with SQL Server on Linux:

After you enter SA password you have to get “vNext” version of your SQL Server.
If you did not get the correct response you might have following problems:
I)   Wrong SA password. To fix it, just re-configure SQL Server.
II)  SQL Server Tools are not installed.
III) Typo. Check your syntax.

The troubleshooting process is a bit different from SQL Server on Windows, but it’s still pretty straightforward.

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Powershell On Windows 10 Bash

Published 2017-01-27 by Kevin Feasel

Max Trinidad goes all the way with installing an Ubuntu environment on Windows:

It’s a known fact, if you install PowerShell Open Source in Windows 10 Bash subsystem, that it won’t work correctly. As soon as start typing $PSVersionTable and press enter, the cursor goes to the top of the screen. And, you keep typing and it gets very ugly.

Now, what if I tell you, I found the way to run PowerShell Open Source without any of these issues. Just like running it like it was installed in a Linux environment. No issues with the cursor going crazy and able to page up and down.

There are quite a few steps here, but Max lays them out clearly.

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Suse On Windows 10

Published 2017-01-18 by Kevin Feasel

Brad Sams reports that Ubuntu isn’t the only flavor of Linux available on Windows 10 anymore:

If you do go down this route, you have the option for installing either openSUSE Leap 42.2 and SUSE Linux Enterprise Server 12 SP2.

The benefits here are obvious, with Microsoft enabling the Windows subsystem for Linux, they are opening the door to more than simply running Bash inside of Windows 10. While that is a good feature and one of the most likely used instances of this subsystem, what Microsoft has actually done is opened the door for more vendors to bring their Linux tools to the Windows platform.

I’d expect Red Hat to follow suit.

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