Ramblings
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Tripping North
After a week of on-call post Christmas, I had a week of PTO with K visiting (we spent Christmas with her parents in Germany). The weather was variable, as it usually is in Ireland, but we got in a few nice walks; we had a rental car for the week, so we were able to…
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Doubling up on 2FA
I haven’t used passwords to log in to my server for years; I’ve been using key-based authentication. This works pretty well, and I can even use 1Password’s integration as an SSH agent to hold the keys so that wherever I go, the keys are available to me. As a “learn how to do it”, I’ve…
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LXD, dnsmasq, IPv6 reverse lookups
My residential ISP doesn’t offer reverse lookups for their IPv6 blocks that they delegate out with the PD flag to consumer routers. This causes some annoying slow-downs when talking to the various services I’m running in LXD containers, since a lot of them do reverse DNS lookups. Under the hood, LXD relies on dnsmasq to…
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Breaking my energy monitoring setup
The ESP8266 module for the emonTx runs what I’d describe as a pretty basic sketch. It’s functional, but it’s not very good at telling me what’s gone wrong. On Monday, I re-imaged the router to upgrade it. A side effect was a setting I’d changed for the DHCP options (what the local DNS is) wasn’t…
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Running emoncms in a Linux container
When I was renovating the house I currently live in, I picked up an EmonTx v3 and some clip-on current sensors from OpenEnergyMonitor.org so that I could monitor the house power consumption more accurately than just getting a bill every 2 months from my energy supplier (even with a smart meter installed, they only provide…
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Rebuilding Cricalix.Net – Part 4
While on holiday, I read a forum post that mentioned a “new” web server called Caddy. I took a look at it, and was intrigued by the integrated TLS certificate renewal using Let’s Encrypt. With NGINX or Apache, I have to run Certbot or similar to maintain the certificates, and I have to deal with…