SQL Server 2017 is the aboriginal SQL Server adaptation that can be installed on Windows, Linux and a Docker container. This stairway alternation serves as a adviser for the accomplished SQL Server DBA to admission abilities and ability on this platform.
This is the aboriginal commodity in a new stairway alternation that will analyze SQL Server on Linux application the best accepted best practices and comparing both the versions for Windows and Linux.
This alternation will awning the afterward topics:
For the aboriginal chapter of this stairway series, let’s go through the aboriginal step: the Linux server installation.
SQL Server 2017 is currently accurate alone on these Linux distributions:
SQL Server 2017 is additionally accurate as a Docker image, which can run on Docker Engine on Linux or Docker for Windows/Mac. The docker angel is based on Ubuntu 16.04.
But, which is the best Linux administering amid those accurate by SQL Server 2017 ? Well, it depends on what your aggregation needs and the aplomb akin you already accept with the accurate Linux distros.
Today, Linux is not alone a chargeless OS, but a belvedere to run business applications. Back comparing the best Linux distros, accumulated Linux users usually booty affliction not alone about the affection cast accurate by that distro, but additionally about abutment and lifetime of the product.
Red Hat is one of the bazaar leaders of Linux distributions. Red Hat Enterprise Linux, or RHEL, entered abounding abstracts centers via abutment deals with accouterments and software vendors. Today is a stable, accurate foundation that’s able abundant for rolling out new applications, virtualizing environments, and creating a defended amalgam cloud. RHEL 7.x bear 10 years of support, with 5 and a bisected years of Abounding support, 1 year of alleged Maintenance Abutment 1 and added 3 years and bisected for the Maintenance Abutment 2.
Ubuntu is a chargeless and attainable antecedent operating arrangement and Linux administering based on Debian. Canonical, the aggregation abaft Ubuntu, has a mission to accomplish attainable antecedent attainable to bodies everywhere, generates acquirement from the auction of able casework about the distribution. New releases of Ubuntu action every six months, while long-term support (LTS) releases action every two years.
Suse Linux Enterprise Server (SLES) is a Linux-based operating arrangement developed by SUSE. Major versions are appear at an breach of 3–4 years, while accessory versions (called “Service Packs”) are appear about every 18 months. From a abstruse perspective, SUSE Linux is added attainable than the added accurate Linux distributions. SUSE is additionally the best administrator-friendly, acknowledgment to its chip YaST platform. SUSE is one of the capital developers for Pacemaker High Availability, the accepted apparatus for high-availability clusters in all accepted Linux distributions, acclimated additionally by SQL Server 2017 to apparatus AlwaysOn or Failover clustering. Long appellation abutment for the accurate adaptation (v12 with SP2) is 31 March 2021.
From the SQL Server DBA point of view, there are no cogent differences amid the three operating systems and allotment one of them could be based on your centralized knowledge, if the aggregation already accept a Linux-based machine, or the account of the appearance you appetite to apparatus calm with your SQL Server.
For this alternation I chose to install an Ubuntu server 16.04. Generally speaking, this administering is well-know for some of the included casework like OpenStack billow services, Ceph scalable broadcast book arrangement or the Metal-as-a-Service (MAAS) tool, which can be acclimated to calmly arrange OpenStack or added server types on bare-metal, all programmatically. We don’t charge all these casework for our purposes, but we can use Ubuntu Server aloof because it’s accessible to setup, well-documented and accurate amid the Linux communities.
To install Ubuntu on your own machine, either concrete or virtual, you accept to use to the accomplished releases download page: http://releases.ubuntu.com/16.04.4/ due to the actuality that the accepted absolution is the 18.04 LTS, which is not accurate by Microsoft.
I appetite to point out that is actual important for a server to accept the abiding abutment (LTS) absolution of the Linux distribution, because it’s added abiding and accurate for the years to appear by its vendor, with added aegis or affection updates.
Before starting the installation, let’s booty a attending at the prerequisites: Ubuntu requires a minimum of 512MB of RAM and 5GB of deejay space, while SQL Server itself requires at atomic 3.25GB of RAM and added 3GB of deejay for the binaries. Considering that we should accept at atomic amplitude to save OS and SQL Server logs, arrangement databases and a few added things, I would not actualize a server with beneath than 4GB of RAM and 20GB of deejay space.
In a after akin of this alternation we’ll see which best practices we should administer to our new SQL Server on Linux, including a assorted deejay agreement to advance our abstracts files, transaction logs and TempDB files. For now, we are bold this is a actual basal server configuration.
Let’s alpha with the installation: cossack the arrangement from the media absolute the ISO book (for archetype an USB key if you are application a concrete server) or affix the ISO to the basal apparatus if you are creating a basal server.
At the cossack alert you will be asked to baddest a accent for the setup.
From the capital cossack card you can accept added options to install Ubuntu on your system, do some analysis or accomplishment a burst system. We’ll awning alone the basal accession of a beginning Ubuntu server.
The installer asks which accent is should use and the keyboard blueprint (by auto-detecting the blueprint or by entering manually).
The installer again discovers the accouterments agreement and configures the arrangement settings application a DHCP server or gives you the advantage to configure it manually by activity aback and selecting the advantage “Configure the arrangement manually”.
Next, the installer asks for the system’s name and sets up a new user that will accept basis admission through the sudo utility. You are appropriate to accept and affirm username and password.
For Windows users: let me explain some concepts afore activity further. In a Linux operating arrangement basis is the user name that by absence has admission to all commands and files, like the Administrator user in a Windows operating system.
At this point of the installation, we are accouterment the arrangement the name of a new unprivileged user that can be acclimated for accustomed tasks. Back we charge superpowers, we can still run a command with the sudo utility, which elevates the privileges to the basis user akin and runs the specific command. This is aloof like the “RunAs Administrator” command in Windows.
You will be asked again if you appetite to encrypt your home directory, so that your stored files are not clear if the computer is stolen.
After actuality asked to accept the timezone, you are entered into the deejay blueprint configuration. We accept four choices, with a guided administering adjustment or a chiral one. I chose to use the absolute deejay and set up a Analytic Volume Manager (LVM). Analytic Volume Administering is a accumulator accessory administering technology that gives users the ability to basin and abstruse the concrete blueprint of basic accumulator accessories for easier and adjustable administration. This is like acquisition absolute accumulator accessories into groups and admeasure analytic units from the accumulated amplitude as needed.
Logical volumes can accept allusive names like “databases” or “backups”. Volumes can be resized dynamically as amplitude requirements change and migrated amid concrete accessories aural the basin on a active arrangement or exported easily. LVM additionally offers avant-garde appearance like snapshotting, striping, and mirroring.
You can apprentice added about LVM here: http://tldp.org/HOWTO/LVM-HOWTO/index.html.
The Ubuntu abject arrangement accession again starts. During this appearance of the accession process, you may be accustomed the befalling to baddest added software to install, by selecting predefined collections of software (for archetype DNS server or OpenSSH server) to bound set up your computer to accomplish assorted tasks. We can artlessly “continue” and skip this task, as we alone charge a abject system.
A aftermost footfall requires us to install the GRUB loader, and again we are accessible to alpha with our new server.
GRUB or GRand Unified Bootloader, is a multiboot cossack loader. A cossack loader is the aboriginal software affairs that runs back a computer starts. It is amenable for loading and appointment ascendancy to the operating system kernel software (such as Windows or Linux). This can add the flexibility, for example, to run altered operating systems from the aforementioned concrete (or virtual) deejay or to run specialized Linux distributions (for archetype to troubleshoot a bootless arrangement or to run analytic tools).
At the end of the accession process, you will be asked to reboot the arrangement to alpha from your new Ubuntu server.
As you can see, this action is absolutely aboveboard and doesn’t crave accurate skills. There are a cardinal of options that you can change by allotment the avant-garde installation, and we’ll apprentice about some of them back we’ll be talking about the best practices and the perfomance tuning.
Now, let’s log in and booty a attending at our new Linux machine.
After rebooting the server, back prompted blazon sqladmin as the username we are application to access the arrangement and the countersign you provided during the bureaucracy to access the machine.
One of the best axiomatic differences affective from Windows to Linux is case sensitivity, abnormally back creating or abyssal a binder structure. The agenda “Data” is not the aforementioned as “data” !
Once logged in, we can use a lot of commands, provided by the command-line interpreter, accepted as shell), we are using. The Bash carapace is one of the best frequently acclimated (but you can acutely change it whenever you want).
Let’s see some example. With the command pwd, abbreviate for book alive directory, we can appearance area we are amid in the agenda timberline and again moving, for example, to addition agenda by application the cd command (change directory), like we do in a Windows command prompt.
We can actualize or adapt a book from the command carapace by application the affairs vi (visual editor), which is included in Linux/UNIX operating arrangement back its aboriginal days, or about-face to a “modern” editor like nano or vim.
We’ll allocution about Linux commands in a approaching article: this abrupt addition was advised alone to appearance you how to log into your anew installed arrangement and analysis if it works.
If you appetite to apperceive added about the Ubuntu Server Linux and how to do a accurate task, you can use the official affidavit armpit at help.ubuntu.com and bang on 16.04 LTS version, which is the accurate copy at the time we are autograph this article.
With the absolution of the Cumulative Update 10 for SQL Server 2017 (build 14.0.3037.1) in backward August, Microsoft has adapted the amalgamation dependecies that prevented the accession of SQL Server 2017 on servers with Ubuntu 18.04 LTS. There may be added accomplishments appropriate on some systems: if the library libcurl4 is installed, you charge to abolish it and install libcurl3, application the afterward commands:
$ sudo apt-get abolish libcurl4
$ sudo apt-get install libcurl3
Microsoft recommends to install SQL Server 2017 on Ubuntu 18.04 for non-production purpose only, until absolute testing has been completed and abounding abutment has been documented.
You can acquisition added advice on the aboriginal blog page: https://blogs.msdn.microsoft.com/sql_server_team/installing-sql-server-2017-for-linux-on-ubuntu-18-04-lts/
We abstruse how to bureaucracy a beginning Linux apparatus with Ubuntu Server 16.04, address in apperception which prerequisites we do charge to move to the abutting step: the SQL Server 2017 installation.
How To Install Ubuntu On Windows 20 – How To Install Ubuntu On Windows 10
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