I got started in WordPress development as many do, by writing a plugin. It, along with nearly a dozen others that I’ve released in intervening years, don’t require much attention, so I’ve generally neglected even the most-basic of maintenance: confirming each is compatible with the latest WordPress release and updating the readme accordingly. I’ve felt guilty about this for some time now, but it wasn’t until this weekend that that guilt compelled me to action.Continue reading Automating plugin releases to WordPress.org
After I set up GitLab’s continuous integration using DigitalOcean Droplets for autoscaling, I noticed that sometimes, a runner would fail, abandoning a Droplet that I’d manually need to destroy. While this problem was infrequent, it was troublesome-enough to warrant some automated solution. Not finding anything readily available, and thanks to DigitalOcean’s
godo library, I put together a Go program to periodically cull stale Droplets.
I recently wondered how long it had been since I added ethitter.com to the Strict Transport Security preload list, as it’s been several years. I added my domain without fully understanding the consequences, though I’ve been fortunate to avoid any problems that could’ve resulted.
Getting back to my original question, version control made it easy to find August 18, 2014 as the date my domain landed in Chromium’s list: https://src.chromium.org/viewvc/chrome?view=revision&revision=290306. At the time, it was one of less than 1,000 domains in the preload list; the bulk of the list was comprised of Google’s own domains. There are currently over 40,000 preloaded domains in Chrome/Chromium. It’s a good thing preloading hasn’t been an issue, it takes a while to get off the list.
I took a break from my ongoing “convert everything to Ansible” project to use the base I’ve established there to install something new: GitLab Runner using Docker Machine. I finally have CI/CD built into my GitLab instance: https://git.ethitter.com/debian/eth-log-alerting/pipelines! 🎉Continue reading docker-machine doesn’t require Docker locally
I’ve had entirely too much fun with Ansible this weekend. Looking forward to drastically improving how I manage my servers!
Two weeks ago, the VPS that hosts this site moved to a machine that had been patched for the Spectre vulnerabilities. Immediately, I began receiving warnings about high load, and these alerts continued unabated for over a week. I tried moving services to other hosts, and I reduced the resources allocated to
php-fpm, all to no avail.
As I continued to monitor and debug the situation,
fail2ban regularly appeared among the top resource consumers, but I didn’t think much of it;
fail2ban has always been a voracious resource user, but it’s an indispensable tool, so removing it wasn’t an option.
When using DHCP, most routers allow individual IPv4 addresses to be assigned to specific devices. In my case, I do so for my Raspberry Pis, making Home Assistant accessible at a domain name rather than trying to remember an IP address.Continue reading Why routers don’t support IPv6 reservations
Previously, I used
curl to trigger
dyndnsd updates via my Raspberry Pis. This worked well for many months, but lacked IPv6 support as
dyndnsd was interpreting my IP from the request. Fortunately, the daemon accepts parameters for IPv4 and IPv6 addresses, so I wrote a Go program to handle regular updates. It still relies on cron, but passes explicit IP values and moves all options to a configuration file.
The client is available from https://git.ethitter.com/open-source/dyndnsd-client. I don't provide built binaries yet, but I'd like to soon.
If your ISP doesn't support IPv6, or if you run multiple daemons on the same network, options are available for your situation. Take a look at the readme for more.
Hopefully someone else finds this useful!