That was fun: mysql update nuked remote access

Update your packages, they said. It will be more secure, they said. I guess it was. No network access to the databases. Even after turning the database server instance to listen again on the right port, I had to go in and redo the passwords and privileges. So yeah, this broke my MySQL instance for […]

An article on Rust language for astrophysical simulation

It is a short read, and you can find it on arxiv. They tackled an integration problem, basically using the code to perform a relatively simple trajectory calculation for a particular N-body problem. A few things lept out at me during my read. First, the example was fairly simplistic … a leapfrog integrator, and while […]

strace -p is your friend

So there I was, trying to use a serial port on a node which was connected to a serial port on a switch. Which I needed to properly configure the switch. So I light up minicom and get garbage. Great, a baud rate mismatch, easily fixed. Fix it. Connect again. I get the first 10-12 […]