dogis an open-source DNS client for the command-line. It has colourful output, supports the DoT and DoH protocols, and can emit JSON.
With it supporting JSON (using the --json flag) you can easily pipe its output through the power tool jq
DNS over HTTPS (DoH), a cartoon intro
I like the cartoons that have been appearing for some time now over at Mozilla Hacks, in which they explain technical things in layman’s terms. The latest article again is a good one: first it explains regular DNS (pictured above), and then continues on to DNS over HTTPS.
Look up DNS Records online with dnsrecords.io
Straightforward new tool by Spatie. Just enter a domain and *boom*. Open Source too.
How and why the leap second affected Cloudflare DNS
At midnight UTC on New Year’s Day, deep inside Cloudflare’s custom RRDNS software, a number went negative when it should always have been, at worst, zero. A little later this negative value caused RRDNS to panic. This panic was caught using the recover feature of the Go language. The net effect was that some DNS resolutions to some Cloudflare managed web properties failed.
90 minutes later they had identified the problem and started rolling out a 1-character fix.
When CCIEs get bored
$ traceroute 216.81.59.173🙂
Zero-config development with Apache’s VirtualDocumentRoot and xip.io
# Use name-based virtual hosting.
NameVirtualHost *:80
UseCanonicalName Off
# ~/Sites/ vhost configuration - sends foo.bar.dev to ~/Sites/bar/foo
<VirtualHost *:80>
VirtualDocumentRoot /Users/dave/Sites/%2/%1
<Directory "/Users/dave/Sites">
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Order allow,deny
Allow from all
</Directory>
</VirtualHost>What that VirtualDocumentRoot does is map the above company and project to the %2 and %1 variables, respectively. So whenever I surf to
http://foo.bar.dev, I end up in~/Sites/bar/foo.
Dave’s a clever man.
Zero-config development with Apache’s VirtualDocumentRoot and xip.io →
xip.io – Wildcard DNS for any IP address.
xip.io is a magic domain name that provides wildcard DNS for any IP address. Say your LAN IP address is
10.0.0.1. Using xip.io:
10.0.0.1.xip.ioresolves to10.0.0.1www.10.0.0.1.xip.ioresolves to10.0.0.1mysite.10.0.0.1.xip.ioresolves to10.0.0.1foo.bar.10.0.0.1.xip.ioresolves to10.0.0.1…and so on. You can use these domains to access virtual hosts on your development web server from devices on your local network, like iPads, iPhones, and other computers. No configuration required!
Now that’s pure genius! How come no-one else ever thought of that before?
To get this working in MAMP Pro, select your vhost, go to the advanced tab and enter ServerAlias project.*.xip.io in the Customized virtual host general settings-field.
Test it out by surfing to http://project.127.0.0.1.xip.io on your local machine. If for example your IP is 192.168.0.11, you can access it from other machines via http://project.192.168.0.11.xip.io