Updated October 2026. The 2021 version of this post installed Jenkins with apt-key and Java 11, built images in a Freestyle job and wiped the…
Linux cheat sheet
Tag: linux
If you faced botnet or you have any other suspicious activity on the server, you should take some actions to prevent it as soon as…
Note (October 2026): this post is from 2020 and uses Kafka 2.5 with ZooKeeper, which Kafka 4 removed. For a current setup see How to…
In this article, I’d like to explain how to implement one of the more common and simple methods of securing the ELK Stack — deploying…
A way to get your code deployed to the production server Webhook allows to automatically retrieve the newest code any time a push is performed…
A Site-to-site VPN is a type of VPN connection that is created between two separate locations. It provides the ability to connect geographically separate locations. for example a linux…
For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx. You must understand that…
If you have Debian 10 installed with Gnome you probably do not have system tray icons at the top right corner. You need to install…
Updated October 2026. The 2019 version of this post was written for CentOS 7, which reached end of life in 2024. The steps below work…
On Linux you can use dd to make a backup from SD card. Reverse if and of (i.e. to where they point – source and destination) afterwards to restore, but…