linux - Sysadmins of the North

Windows 11/10 and WSL 2 DevOps environment

In this post I describe some of the settings and changes I made to make my Windows 10 and Ubuntu WSL into a fully fledged development environment. Here are the settings and tools I use for DevOps/SysOps on Windows.

Published on Monday, 15 August 2022

How to share OpenSSH keys with WSL in Windows 10

Don't want to copy over your ssh keys from Windows to WSL 2 Linux? Or generate new ones? Then share your Windows OpenSSH key with WSL 2! The OpenSSH config gives you the option to share keys using an IdentityFile directive. Here is how you can share your SSH keys between Windows 11/10 and WSL 2.

Published on Sunday, 5 September 2021

Setting up Monit monitoring in Windows Subsystem for Linux WSL

How to install and configure Monit monitoring in Windows 11/10 WSL

Published on Sunday, 10 March 2019

Benchmarking WordPress, simple load & speed testing with ApacheBench

In this post I show you how you can benchmark the loading speed of your WordPress. For this you use ab, or ApacheBench. ab is a tool for benchmarking your Apache Hypertext Transfer Protocol (HTTP) server. It is designed to give you an impression of how your current Apache installation performs.

Published on Sunday, 9 October 2016

MySQL InnoDB performance improvement: InnoDB buffer pool instances - Updated!

Are you running into MySQL load problems? InnoDB Buffer Pool optimization is an important step in tuning MySQL servers for a heavy InnoDB workload. Configuring innodb_buffer_pool_instances and increase read/write I/O threads. Dividing the InnoDB buffer pool into multiple instances can improve Disk I/O. And by doing so, you run your database & server more efficiently and faster. Here is a little help for you.

Published on Friday, 10 June 2016

Recursive scp and symlinks

TL;DR, when using recursive scp, symbolic links aren't preserved and are copied as if they are normal directories. So you have to look for another solution to recursively transfer symlinks over ssh. Use Tar over ssh!

Published on Thursday, 4 February 2016

Install Elasticsearch on CentOS 6.7

How to install Elasticsearch on CentOS 6.7. Elasticsearch is a highly scalable open-source full-text search and analytics engine. It allows you to store, search, and analyze big volumes of data quickly and in near real time. In this article we'll go over the steps to install Elasticsearch on CentOS 6.7.

Published on Tuesday, 29 December 2015

Install Varnish Cache on CentOS 6.7

In this article I'll show you how to install Varnish Cache on CentOS, version 6.7 in this case. Varnish is a web application accelerator also known as a caching HTTP reverse proxy. You install it in front of any server that speaks HTTP and configure it to cache the contents. Because Varnish Cache is really, really fast, web applications like WordPress, Drupal and Joomla can greatly benefit from Varnish Cache.

Published on Tuesday, 29 December 2015

Generate pseudo-random passwords with OpenSSL

OpenSSL comes in handy when you need to generate random passwords, for example for system accounts and services. In this short post I'll give you a quick example on how to generate random passwords with OpenSSL in Linux (Bash), Windows and PHP.

Published on Friday, 27 November 2015

Tunnel RDP through SSH & PuTTY

How to tunnel Remote Desktop over SSH with PuTTY? Have you ever been in a situation where you needed to perform remote administration on a Windows Server, and the RDP port 3389 is blocked on a firewall? You can tunnel RDP over SSH with PuTTY. This particularly comes in handy when there is no VPN available to the remote network...

Published on Tuesday, 28 April 2015

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