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Linux

How to remove unused Docker images.

Posted on September 24th, 2018.

If you usually work with Docker, you may have noticed that unused images can eat quite a lot of disk space.

Featured

Linux

Setting up Graylog behind Traefik (SSL with Let’s Encrypt). LDAP auth through FreeIPA.

Posted on September 23rd, 2018.

Graylog is a powerful open source log management platform. We are going to set up a simple installation with docker-compose.

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Linux

Run containers with docker-compose and view logs

Posted on August 14th, 2018.

Docker compose can be run in detached mode and you can attach to the logs of all container later.

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General

How to issue ACMEv2 Wildcard with Certbot on Ubuntu 18.04

Posted on July 14th, 2018.

We need to issue a willdcard SSL certificate for the domain *.yourdomain.com.

Featured

Linux

Jenkins and SSL: x509: certificate signed by unknown authority error

Posted on June 30th, 2018.

This is something that really run me mad and took a while to have it sorted. Unfortunately there is not much documentation online, therefore I am posting this for personal reference and to help others who could stumble upon the same issue.

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General

My quest for a Linux compatible 5Ghz USB dongle

Posted on June 25th, 2018.

So, the day came when I finally got a fiber line at home: 150Mbps symmetrical.

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Linux

ZFS: setting up a mirror with ZIL and L2ARC optimizations

Posted on June 19th, 2018.

I have always been a big fan of ZFS and had the opportunity to set up a Solaris network backup server with data deduplication. It was the time when I was running my small VPS business and needed to be able to make live snapshots of our clients VPS disks. ZFS and its data deduplication feature saved the day!

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General

Converting an Array of Objects to an Object.

Posted on May 19th, 2018.

Very useful post which explains how to an array of objects to an object of objects:

Featured

Linux

Installing Wok and Kimchi on CentOS 7.x

Posted on March 24th, 2018.

I’ve been looking for a nice graphical front-end for KVM for an CentOS host. I stumbled across Kimchi and decided to try it out.

Featured

React

Material-UI Toggle and onToggle callback function. Passing data.

Posted on March 4th, 2018.

Data from a Material-UI toggle component can be passed to a callback function with a data-* tag.