jlelse's Blog

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Tutorial

Backup a dockerized Postgres database with Resticker

in Dev

I got the question how to solve the problem that when backing up the storage of a dockerized Postgres database (using Resticker) it could be that the backup is corrupt because the database is still running. This is an addition to my post of how to backup Docker volumes using resticker. I had exactly the same problem. I wanted to backup a Postgres database running in a Docker container without having to stop the database or have a corrupt backup.

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Use Telegram as a notification service with Go

in Dev

Telegram is my favorite messenger for chatting. There are many reasons for this. But Telegram is also very suitable to use it as a notification service for your own projects. For example I get a daily overview of the number of page views of my blogs, but also notifications about new Webmentions, or likes and announcements via ActivityPub are sent to me via Telegram. That I use Telegram is because the Bot API is so easy to use.

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How to Get a Completely Free Website

in Dev

In this post I want to show with which services and tools it is possible to run a completely free website. An own website not only offers the possibility to create your own professional web presence, it can also make you independent from silos like Facebook, Twitter or Medium. It is always better to publish content on your own page with your own domain. If a service changes the terms of use or ceases operation, it is so much easier to move to another service.

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Windows: Running Linux apps with Alpine WSL and VcXsrv

in Dev

If you want to use Linux applications on Windows you have multiple options. Using the Windows version of the application if it’s available, cross-compile the app, use a VM or Docker, or use the Windows Subsystem for Linux with a X Server. A small and lightweight WSL distro is Alpine, which is also quite popular in the Docker world. It’s based on musl, uses busybox and just contains the most important things to be functional.

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Fix Fedora Silverblue after "rpm-ostree ex livefs" failed

in Dev

This is just a quick post, I mainly write for myself, in case it should happen to me again. I temporarily broke my Fedora Silverblue installation for the second time by running the command: sudo rpm-ostree ex livefs --i-like-danger after I installed a new package. One has to append --i-like-danger for a reason, but I didn’t want to hear. I wanted to try the new package directly without rebooting my PC.

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Mass Delete Tweets (free & no 3rd-party apps)

in Posts

In this post I want to explain how you can mass-delete old tweets without the need to use a 3rd-party service that probably also want your money or scripts that require you to create an application on the Twitter developer portal. You will just make use of Firefox, Tweetdeck, some shell scripts and two command line tools. To follow this tutorial you need the following prerequisites: An account at Twitter with tweets you want to delete (otherwise this tutorial is totally useless for you) Firefox Basic knowledge of how to use a terminal curl, jq and bash installed on your system (I will use a standard Linux distribution with a zsh-shell, so if you are using Windows or Mac, or another shell, commands can slightly differ) Disclaimer I’m not responsible for any damage caused by you following this tutorial!

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Automatically Backup Docker Volumes using restic

in Dev

One of the most visited pages on my blog is about how to automatically backup Docker volumes. In that post I use the Docker image blacklabelops/volumerize. Unfortunately that image is deprecated since March 2019 and not longer maintained. Under the hood the volumerize image is using the GNU program duplicity, which is an awesome software, but also has its downsides. Especially the model of full backups and incremental backups comes from a time where backups where mainly made to tapes (just append new files all the time).

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Schedule static page deploys on Netlify with IFTTT

in Dev

This blog is a static website hosted on Netlify. As static site builder, I use the awesome Hugo, which is written in Go and amazingly fast. This page with currently more than 300 pages build in less than 500ms. But as the name “static” suggest - just static files that are served by a simple HTTP server - it doesn’t have a dynamic backend with the option to schedule posts, so scheduling isn’t possible the same way it is with systems like WordPress.

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Migrate a PostgreSQL Container to a New Major Version

in Dev

A few weeks ago PostgreSQL 11 was released with a few new features and probably also a lot of improvements and bug fixes since the last release. Although I don’t really have the need to update to the latest version (I just use PostgreSQL as database for my Nextcloud and Miniflux installations), I wanted to migrate it though, to have everything up to date and probably profit from those smaller improvements.

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Automatically Backup Docker Volumes

in Dev

Update I changed my setup because the Docker image used in this post got deprecated and is no longer maintained. Read about my new setup using restic to automatically backup Docker volumes. 👉 New setup Original post For my server needs, I rent a small VPS at Hetzner Cloud. It has two vCPUs, 4 GB of RAM, 40 GB of storage and I can use 20 TB of outgoing traffic each month (the incoming traffic is free and unlimited) and it only costs me 5,83€ each month, a lot cheaper than DigitalOcean, Linode or even AWS.

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Jan-Lukas Else