Casan

Kmemd is a tool for reading kernel memory of a running kernel using GDB. This can be very useful for debugging and development. Read the state of the kernel without adding a debug prints and rebooting. And because it is read-only, it doesn’t interrupt the running kernel and cause problems with hardware watchdogs. Though, the drawback is you can’t do breakpoints or step through the code. This is a simple introduction to using it. Aimed at debugging a remote system. ...

Redundancy with zero downtime, at the cost of double the bandwidth. HSR and PRP provides that for you. All traffic is duplicated to ensure that at least one copy arrives even if a cable breaks. Many other protocols, like spanning trees, requires reconfiguration when the topology changes. Setup Let’s start by creating some veth interfaces that we can communicate over. One is put in a network namespace. ARP can be a bit wonky when both ends are in the same namespace. ...

Three years ago I wrote My thoughts on AI code generators just as AI coding was taking off. AI has improved immensely since then. My journey in the tech realm really began with my degree in Computer Science, starting in 2018. I don’t know how the AI landscape looked before that, but as I did my degree, AI was hyped up everywhere. Everyone wanted to learn AI and machine learning. The university even began creating an AI degree (which I believe was launched the term after I left in 2021). Large Language Models (LLM) as we know today didn’t exist yet, but every CS student wanted to learn about AI. Initially, I too saw AI as cool and interesting. ...