Infraestructura

Using an overly aggressive DNS blocklist in NextDNS broke AliExpress affiliate links. Diagnosed with dig and fixed by switching to HaGeZi Multi PRO.

Workaround for scanning double-sided documents with the Brother DCP-L3560CDW and its simplex document feeder.

If you work with Kubernetes, you've probably suffered through the kubectl logs command. It's useful for viewing the logs of a specific pod, but it falls short when you have multiple replicas of a service or when pods restart and change names.

This is where Stern comes in.

Stern allows …

Quick guide to inspecting the contents of RPM packages and determining which packages own specific files on your Linux system.

Discover Kubegres, a Kubernetes operator that simplifies the deployment and management of highly available and scalable PostgreSQL clusters.

Understand the different TCP connection states reported by netstat and ss, from establishment to termination, for better network diagnosis.

Configure Kitty for instant and efficient access, combining the power of a modern terminal with the convenience of a dropdown.

A quick guide to the most useful Kitty keyboard shortcuts to optimize your command-line workflow.

Exploring the reasons and benefits of switching from Yakuake to Kitty for a more powerful and customizable terminal experience.

Methods and tools to discover active devices on local networks using nmap, arp-scan, netdiscover, and other reconnaissance techniques

Stop firefox from opening the pasted url with the middle mouse button

Analysis of X-Forwarded-For and X-Real-IP headers, their origins, differences, and how to determine the client's real IP in architectures with multiple proxies

How to configure Nginx to pass the client's real IP to backend servers using the X-Forwarded-For header in reverse proxy configurations

To measure the bandwidth I am using right now, I use NetHogs

By default, it looks for a network interface called "eth0". If it doesn't find it, it complains like this:

ioctl failed while establishing local IP for selected device eth0. You may specify the device on the command line …