davd.io

Postfix subaddressing (with PostgreSQL)

I have so many accounts for various web-based solutions, I barely can remember a few. And they send emails. So many that it’s sometimes hard to not loose the overview in my mailbox. When you run your own mail server, it’s easy to set up a dynamic aliases for your mailserver based on a regular expression pattern that allows to e.g. have a own email address for each service you register.

FreeBSD: Route jail traffic through VPN

I wanted to expose a single jail of my FreeBSD NAS to a network of a client via OpenVPN while it’s reachable both from my network and from the clients’ network. It should send all of its traffic through that VPN tunnel so that it appears like it is just another computer on that foreign network. Luckily FreeBSD offers a great way to solve this by creating a separate routing table apart from my main routing table that is used when starting OpenVPN (so that it can populate it’s routes there) and when starting the jail (the jail in fact will consider that routing table as the only routing table available and therefore use it for anything).

Building a NAS control panel for macOS with BitBar

After finishing with the hardware and software parts of my new NAS, I decided to append another little project which is aimed to provide a simplified control panel for macOS in the menu bar on the upper right of the screen. Objective What I wanted to achieve is a possibility to mount my various shares with one click as well as having controls for power on/off and SSH. Additionally the control should indicate whether the NAS is currently powered on or not.

Essentials on securing macOS

UPDATE 2018-06-02: I’ve created a new version of this article called “Securing macOS” available here: https://www.davd.io/securing-macos/

NPM deadlock bug fixed in FreeBSD 11

Setting up a NodeJS application on a FreeBSD 10 system was impossible when using ZFS as a file system. This was a real pain for me because when I tried out various stuff in jails rendered the whole system unusable, forcing me to reboot and this is not something one would do in a production environment. Here’s the bug report: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209158 Although I couldn’t read it from the bug it seems to be resolved now with FreeBSD 11-RELEASE because I’m running two Node applications on FreeBSD without any of the issues that were reproducible each time.

Build your own dynamic DNS in 5 minutes

If you encounter any problems, please check the up-to-date documentation at https://github.com/dprandzioch/docker-ddns . In some projects I need access to various hosts with a dynamic IP from time to time. Dyndns services offer a great solution by providing a DNS with records that are updated by the clients once their IP addresses change. There are various existing services out there that are either free or paid, but if you want to self-host a dyndns service, you have to set up a DNS by your own as well as some endpoint that your clients can connect to in order to update their records.

iCloud Photo Sync stuck - how to force resume

Sometimes it seems that Apples iCloud sync seems to do not exactly the right thing. During initial upload of my photos I multiple times had the issue, that it was not possible at all to upload the photos. When looking at the sync pane of the Photos app, it was something like “18 hours remaining…” but nothing happened, even after two days. The system process responsible for managing the photo upload is called cloudphotosd.

Thoughts on API design in a world of carelessness

The company I’m working at provides eCommerce solutions for many years now. A few years ago we decided to give up on our own product and started to become an agency that would work with a existing eCommerce application from now on. In our own software, we provided a SOAP API which hadn’t changed for years that had some client-side implementations in various ERP systems and when we switched over, we decided to provide a compatibility plugin for the new software that would expose the SOAP facade we built years ago and translate all requests to the REST API (which we called internally without going over HTTP again).

Building a FreeBSD NAS Part 3: System setup

FreeBSD is the ideal system to use when building a server. It’s reliable and rock-solid and it’s file system ZFS not only offers anything you would expect from a file system but is also easy to set up and to maintain. This is why I chose it to power my NAS. In Part 1 and Part 2 of this series I already described my intentions and the hardware assembly. Now it’s time to bring it to life.