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  • Windows Server

List all SPNs used in your Active Directory

3 unique methods to list Service Principal Names (SPNs) in your Windows network quickly using PowerShell. An SPN or Service Principal Name is a unique identity for a service, mapped with a specific account (mostly service account).

  • Jan ReilinkByJan Reilink
  • On28-02-2018
Read MoreList all SPNs used in your Active Directory
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  • Windows Server

Windows Server 2016 VM on Hyper-V stuck at stopping

If a Windows Server 2016 guest VM on Hyper-V hangs while stopping after Windows Updates, and it won't reboot, it might be caused by the recovery debug information type set. Especially when you have moved the Windows PageFile to a different partition / VHDX

  • Jan ReilinkByJan Reilink
  • On28-02-2018
  • 1 Comment
Read MoreWindows Server 2016 VM on Hyper-V stuck at stopping
  • WordPress

Increase WordPress’ memory limit WP_MEMORY_LIMIT properly in wp-config.php

How to increase the memory limit for your WordPress website, the right way. In this post I show you a correct way of setting WordPress WP_MEMORY_LIMIT and PHP memory_limit settings to improve Wordpress speed & performance.

  • Jan ReilinkByJan Reilink
  • On26-02-2018
Read MoreIncrease WordPress’ memory limit WP_MEMORY_LIMIT properly in wp-config.php
List installed .net framework versions
  • Windows Server

How to: Determine installed .NET Framework versions

Users can install and run multiple .NET Framework versions on their computers. When you develop or deploy your app, you might need to know which .NET versions are installed on a machine and here is how to check the .NET version.

  • Jan ReilinkByJan Reilink
  • On07-09-2017
Read MoreHow to: Determine installed .NET Framework versions
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  • GNU/Linux

Release hold queue email in Postfix – postsuper

The postsuper command controls different types of queues in the Postfix mail system, like the deferred or hold queue. This post shows you some Postfix queue operations to maintain your mail servers.

  • Jan ReilinkByJan Reilink
  • On06-09-2017
  • 1 Comment
Read MoreRelease hold queue email in Postfix – postsuper
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  • Windows Server

How to determine if a SQL Server backup is compressed?

Compressed SQL Server backups can be verified in PowerShell using a handy PowerShell function. This comes in handy when you need to verify if existing SQL Server backups are compressed.

  • Jan ReilinkByJan Reilink
  • On31-08-2017
Read MoreHow to determine if a SQL Server backup is compressed?
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  • Windows Server

How to unzip a file in PowerShell

Unzip a file on your PowerShell command-prompt may come in handy sometimes, even on your Windows 11/10 workstation. Use Expand-Archive for this, and all that is required is PowerShell 5.0+, or the .NET 4.5+ Framework to use System.IO.Compression.ZipFile.

  • Jan ReilinkByJan Reilink
  • On30-08-2017
Read MoreHow to unzip a file in PowerShell
  • GNU/Linux

Restore single MySQL table from a full mysqldump backup file

Learn how to restore a single table from a full MySQL mysqldump backup file using Bash shell in Linux

  • Jan ReilinkByJan Reilink
  • On21-08-2017
Read MoreRestore single MySQL table from a full mysqldump backup file
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  • WordPress

Protect WordPress from brute-force XML-RPC attacks

How to protect your WordPress from brute-force XML-RPC attacks, because the WordPress XML-RPC API has been under attack for many years now.

  • Jan ReilinkByJan Reilink
  • On02-06-2017
  • 3 Comments
Read MoreProtect WordPress from brute-force XML-RPC attacks
WSUS IIS Application Pool Advanced Settings
  • Windows Server

WsusPool keeps crashing: stops again and again

WSUSPool keeps stopping? Sometimes you find your WSUS server keeps crashing over and over again. The WSUS application pool periodically stops, WSUS is unavailable and/or the WSUS management console hangs.

  • Jan ReilinkByJan Reilink
  • On25-05-2017
  • 2 Comments
Read MoreWsusPool keeps crashing: stops again and again
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Sysadmins of the North. A technical SysOps blog, where topics include Sysadmin, DevOps, computers, servers, web, MySQL, database, virtualization, optimization and security.

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