Tag: linux

  • Getting Ghostty to Work on Synology

    Ghostty is a terminal application that I don’t really need (it’s listed features either already exist in the MacOS terminal, or seem so esoteric or marginal that I can’t imagine any real benefit from them in my normal use), but I wanted to be one of the cool kids, so I thought I’d give it…

  • Command chaining with NTFY for long running commands

    NTFY is a great open-source push notification service that’s self-hostable or free to use (although I suggest you pay for it as I do). I’ve written before how I use it with UptimeKuma for my uptime monitoring, but another common use is just when I’m initiating long-running commands and backgrounding them. This magic is possible…

  • rsync between Synology NAS

    A while ago, I devised a complicated system where I could drop files in a web interface running on an LXD container and the files would then magically appear in a directory on a remote NAS in the morning. It turned out to not be very robust, and I gave up on it after a…

  • User environment variables are not available in cron

    I’m used to using the docker-compose.yaml or dockerfile to set environment variables for containers running my apps, but ran into an issue recently where the variable seemed to be set some of the time, but at others it didn’t appear to exist. I had a script set to run by cron inside the container, and…

  • Beginning Node App Security

    Since I’m using Tailscale to painlessly manage all my networking on the homeserver here and my remotes, I’ve had the luxury of being a bit casual about the security of my internal apps and self hosted dev tools. I’m currently iterating on a web app that requires public access, and is therefore up on a…

  • Docker volume backup is more complicated than it should be

    When I set up my first Docker container (I think for Uptime Kuma), I had read around and understood there were two choices for persistent; bind mounts (where the data inside the container is effectively a symlink to a location on the local file system) or name volumes where Docker abstracted that away a bit,…

  • apt update – BADSIG 871920D1991BC93C

    I have an ansible script that runs each weekend which basically does an apt update && apt upgrade -Y on every Debian based instance. This weekend it failed on one Ubuntu host. When I went it to try it manually, this was the output: Solved The first google result mentions apt-cache – which I also…

  • Caching APT updates

    It’s bothered me for a while that all these VM’s are pulling down a lot of the same updates. As well as needlessly using some bandwidth, I’m hammering the update servers (that I don’t pay for) with the same requests over and over. I did briefly consider running my own mirror, but that’s not simple,…

  • Installing service with Ansible

    Having written my little monitoring endpoint in Go, it needs pushed out to all my servers and VM’s. Clearly this is a job for Ansible which I’ve already dabbled my toes in. Before we get onto doing that though, we need to have a think about how to make it a service. Linux Services A…

  • Disable SSH root logins

    This always makes me laugh: It’s like half the traffic on the internet is bots trying random passwords on root accounts over ssh. This is on an Ubuntu VPS on BinaryLane that had only been spun up five minutes or so. Looks like about one attempt every 10 seconds. This is why the number three…