Author Archives: Dae

Authentik: set custom username for OAuth application (e.g. for Apache Guacamole) via a property mapping

Posted on November 12, 2022 by Dae

If you use Authentik (https://goauthentik.io/) as an OAuth authentication provider for your Apache Guacamole (https://guacamole.apache.org/) instance and you’d like to customize usernames for Guacamole, here’s how you can achieve this. The steps described below may work for other applications, wired … Continue reading →

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Guacamole 1.4: “Creation of WebSocket tunnel to guacd failed”

Posted on November 11, 2022 by Dae

Problem: Guacamole 1.4 shows “internal error” when making any connection and in /var/log/tomcat9/catalina.out you see something like:

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Guacamole 1.4: “Log in failed” for RDP connections

Posted on November 11, 2022 by Dae

Problem (Guacamole 1.4 while connecting to an RDP server): …and in logs:

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Serving acme-challenges from two web-servers sharing the same domain via nginx

Posted on October 30, 2022 by Dae

Say you have nginx listening on port 80 and sharing a domain with another web-server (e.g. Proxmox web-server) that is listening on a different port, and you want to route HTTP-01 (“acme-challenge”) requests to that second web-server.

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Confluence: broken links and macros after migrating Postgres database

Posted on July 14, 2022 by Dae

Problem: after migrating Atlassian Confluence PostgreSQL database to another server, you’re seeing lots of broken links (in red color) and some navigation macros not working properly (showing errors such as “page not found”). The first thing Atlassian themselves and their … Continue reading →

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Zola + Vite demo

Posted on June 1, 2022 by Dae

How to neatly wire up Zola (static site generator) with Vite (frontend build tool) without special plugins (a minimal demo).

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Postgres database on a separate drive

Posted on May 26, 2021 by Dae

In psql: CREATE TABLESPACE mytablespace LOCATION ‘/Volumes/MyVolume/postgres’; CREATE DATABASE mydatabase TABLESPACE mytablespace; Kudos to GregHNZ for posting this on StackOverflow.

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Think twice before you buy WD_BLACK D50 Game Dock for your Mac

Posted on April 9, 2021 by Dae

If you’re considering getting a Thunderbolt 3 dock called WD_BLACK D50 Game Dock (e.g. # WDBA3U0000NBK-EESN) to use with a Mac, think twice.

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Django + Vue CLI + Webpack demo

Posted on May 26, 2020 by Dae

How to wire up a Vue CLI app and Webpack to Django templates with routing, hot reload, code-splitting and without any extra plugins (a minimal demo + explanation).

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Proxmox: QEMU Guest Agent is not running — qmp command ‘guest-ping’ failed

Posted on May 10, 2020 by Dae

Hey fellow Internet dweller, are you worried about the following message appearing during backup of a suspended virtual machine in Proxmox?

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