WordPress-Plugin to Embed Gitlab Project Information

1. Januar 2022 in Programmierung, Technik.

For my personal use, i wrote a small WordPress plugin that allows me to embed a link to a Gitlab repository, a list of commits and a link to the releases of that project in a WP post.

Example (linebreaks added to shortcode for readability):

[​gitlab-show-project
    url="https://tk-sls.de/gitlab"
    project_id=43
    max=3
    author="none"
    releases="latest"​]

Output:

Gitlab-Projekt linuxfoo-gitlabLetzte 3 Commits:2022-08-28 : fb5d9a8f tab vs space cleanup2022-01-01 : f6abb63a add option author="none"2021-11-30 : 4b7b8d4a project_header formattingNeueste Release: v1.4.4

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Interactive nftables Ruleset Editor

28. November 2021 in Administration, GNU/Linux, Technik.

I wrote a simple shell tool to interactively edit the current nftables ruleset using a terminal-based text editor (respecting environment variable EDITOR and defaulting to vim).

For testing purposes, it can optionally revert the changes after a timeout specified in seconds (option --timeout SECONDS, requires systemd-run).

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 Other Ways

19. November 2021 in Musik.

120 bpm Deep House / Glitch

 Trabant

17. November 2021 in Musik.

Electronic, 120 bpm.

GRE Setup for Bacula on a Mobile Client

7. November 2021 in Administration, GNU/Linux, Technik.

The way Bacula works is:

  • A backup client runs a TCP server process bacula-fd, waiting for a backup server process bacula-dir to connect and perform backup and restore jobs.
  • There is a simple authentication mechanism, where bacula-dir presents a shared secret to bacula-fd to be granted access.

Opening the bacula-fd TCP server on an exposed network interface may be fine for static backup clients with dedicated storage networking towards the backup server, but on a mobile computer bacula-fd should be reachable by bacula-dir only if the computer is connected by Ethernet to the home network. Specifically, the TCP server port of bacula-fd should not be exposed on the Ethernet NIC.

To implement this, i have defined a GRE tunnel between mobile backup client and home network backup server.

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Create or Append a debian/changelog Entry

31. Oktober 2021 in Administration, GNU/Linux, Programmierung, Technik.

Since i always have to look this up, everytime i need it, i write it down once, as „note to self“!

NAME="John Smith" EMAIL=j.smith@example.org \
    dch --create \
        --package my-package \
        --newversion 0.1 \
        "Initial release"

And that’s it! 🙂

Generate Certificate Signing Requests (CSRs) for TLS Server Certificates

28. November 2021 in Administration, GNU/Linux, Technik.

Overview

In this article, a procedure is described to generate multiple certificate signing requests (CSR) for TLS servers, such as SMTP-, IMAP- or HTTP-servers, so that we can submit them to a Certificate Authority (CA). The CA will eventually perform the signature and return a public certificate to us.

A Shell and the software OpenSSL should be available.

The subject organization (the entity the request is for) is assumed to be the same on every request, and the subject alternative names are assumed to follow the same pattern (the DNS name of some service plus a „www.“ DNS alias for that service).

The procedure can easily be expanded to make more request information configurable and allow, for example, processing a CSV file into a set of requests.

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 Disco Infernale

27. Mai 2021 in Musik.

Trying out the Synths in my upgrade of Reason …