Open Source

Optimizing UPS power use when the power goes out

This post is mostly for myself. I’m just putting my Sunday morning thoughts down for later review and consideration. When Selecting replacements batteries for my Eaton 5PX UPS (5PX2200RT & 5PXEBM48RT), I began to think about: when the power goes off, why can’t I keep using my laptop? Usually, I still have an Internet connection: […]

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Loading up an old copy of a PostgreSQL database, zfs snapshots, and sanoid snapshot management

Sometimes you want to go back to a known good state. And you want to do it quickly, without waiting around. In my case, that’s going to be a zfs snapshot. Today I am preparing to test some code changes so that FreshPorts properly creates a new category. See these recent blog posts for details:

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Self-hosting Bitwarden / VaultWarden on FreeBSD

The time has come for me to consider another application for my TOTP data (think 6-digit codes produced by Google Authenticator or an RSA device. I’ve been using an app called 2STP – I have long liked it. Support for it ended about 7 years ago, yet it continued to slug along on my phone

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kernel: Limiting closed port RST response from x to y packets/sec

For 3 days now, I’ve been seeing these messages. If you search online, it’s usually the result of port scanning. Aug 7 14:05:15 zuul kernel: Limiting closed port RST response from 212 to 195 packets/sec Aug 7 14:05:16 zuul kernel: Limiting closed port RST response from 219 to 215 packets/sec Aug 7 14:05:17 zuul kernel:

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Updating some jails from FreeBSD 14.0 to FreeBSD 14.1 via mkjail

I’ve updated all my hosts to FreeBSD 14.1 – but not all the jails. I’m going to do some of that today. In this post: FreeBSD 14.0 FreeBSD 14.1 mkjail-0.0.4 What’s on r730-03 to update? Full disclosure: mkjail was originally written by Mark Felder, and I joined him in maintaining it. I use it for:

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