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  • Short tip: transactional-update and breaking post-scripts

    calendar Aug 12, 2025 · 8 min read · kurztipp uyuni podman immutable  ·
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    I recently updated an openSUSE Leap Micro 6.1 machine running Uyuni 2025.05 before upgrading to Uyuni 2025.07:

    1# transactional-update
    2# reboot
    

    After running transactional-update (as suggested by the Uyuni documentation) and rebooting the system, Uyuni couldn't be started anymore:

    1# mgradm start
    24:36PM INF Welcome …

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  • Short tip: Nextcloud 31 - Incorrect row format found in your database

    calendar May 15, 2025 · 4 min read · kurztipp nextcloud mariadb  ·
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    After upgrading to Nextcloud 31 I came across the following warning in the admin overview:

    1Incorrect row format found in your database. ROW_FORMAT=Dynamic offers the best database performances for Nextcloud. Please update row format on the following list: oc_notes_meta, oc_profile_config, oc_twofactor_providers, …

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  • Short tip: Remove Nextcloud File Locks

    calendar Apr 27, 2024 · 2 min read · kurztipp nextcloud  ·
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    To prevent accidental overwriting of files during synchronization - especially between multiple users and clients - Nextcloud relies on File Locking. This function is implemented at application level and therefore has no special requirements for the file system used.

    However, with large amounts of data and network …


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  • Short tip: Remove gnome-text-editor session

    calendar Feb 14, 2024 · 1 min read · kurztipp  ·
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    gnome-text-editor, the default editor of the GNOME desktop, usually remembers recently opened documents and reopens them on startup after a crash. This is particularly impractical if the crash is caused by opening a file that is too large (e.g. 20 MB JSON dump) or unsupported (e.g. binary file): …
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  • Short tip: Control King Smith WalkingPad with QWalkingPad

    calendar Jan 18, 2024 · 1 min read · kurztipp  ·
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    I have owned a foldable King Smith WalkingPad R1 Pro treadmill for the home office for some time now. This is controlled with a remote control via BLE (Bluetooth Low Energy). Unfortunately, this seems to consume quite a lot of power - at least the CR2032 battery in my treadmill always runs out after a short time.

    Since …


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  • Short tip: EL9 VMs boot into Kernel Panic under QEMU/KVM

    calendar Nov 25, 2023 · 1 min read · kurztipp terraform proxmox  ·
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    When deploying a new AlmaLinux 9.3 VM under QEMU/KVM, I encountered the following error during the first boot:

    <img
      loading="lazy"
      decoding="async"
      alt="Kernel Panic during boot"
      
        class="image_figure …</picture></figure></p>

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  • Short tip: NetworkManager, 802.1x and SELinux

    calendar Oct 5, 2023 · 2 min read · kurztipp selinux  ·
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    IEEE 802.1X is a standard for authentication and authorisation of devices in networks. Thus, physical LAN ports, VLANs or WLANs can only connect to the network after successful authentication, for example via RADIUS. Communication can be encrypted via TLS or PPP-EAP-TLS, for example.

    If this network configuration is to …


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  • Short tip: Windows 10 VMs under QEMU/KVM

    calendar Apr 24, 2023 · 2 min read · proxmox kurztipp  ·
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    Although there are now fewer and fewer reasons to use Windows for classic application programs, the Redmond operating system is unfortunately still needed, especially for supposed "enterprise software".

    The installation of the operating system is quickly done thanks to virt-install or virt-manager. For screen …


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  • Short tip: WireGuard VPN via FRITZ!Box and Network Manager

    calendar Jan 12, 2023 · 2 min read · kurztipp  ·
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    The biggest highlight of the recently released FRITZ!OS version 7.50 is the added WireGuard support. Compared to the previous IPSec standard, which can still be used, VPN connections can be set up significantly easier on different platforms. It also offers stronger cryptographic algorithms and better performance …
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  • Short tip: Rootless Podman + docker-compose under Fedora

    calendar Sep 29, 2022 · 2 min read · docker fedora podman kurztipp  ·
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    Since 2018, there has been a very elegant and lean container runtime, Podman, as an alternative to Docker. Podman offers a smaller attack surface due to omitted background services and is also often pre-installed on Red Hat-like operating systems. With a few tricks, existing docker-compose configurations can still be …
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Christian Stankowic

Virtualization, Linux and IaC
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Recent Posts

  • Short tip: transactional-update and breaking post-scripts
  • Red Hat Summit 2025
  • Short tip: Nextcloud 31 - Incorrect row format found in your database
  • SUSECON 2025
  • Use Twinkly offline with Home Assistant
  • First experiences with Uyuni and SUSE Manager Podman images
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  • Uyuni/SUSE Manager: Error synchronizing Oracle Linux 8 YUM repositories

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