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Local Ubuntu APT repo mirror on CentOS 7 v2

I’ve done this using apt-mirror already, but it turns out, apt-mirror has a few caveats: it’s unmaintained it requires debootstrap + chroot On top of that, I’ve been having issues enabling multi-arch for my repo. So I tried out apt-cacher-ng too, but it turned out to not play too well with reverse proxies. Then I […]

Ubuntu 18.04 UEFI Network Installer

For whatever reason, Canonical thinks this decade-old standard is still optional. Well guess what, it’s not. Many modern systems don’t even have CSM. At all. The workaround is extremely elegant, as always with Ubuntu: grab the mini.iso files, then add the EFI folder from the server ISO to the mix, and that’s it. Lovely, right? […]

Local Ubuntu APT repo mirror on CentOS 7

Note: make sure to check out the revised APT repo mirror guide! So you might want to have a local mirror for your Ubuntu workstations, but you don’t want to run Ubuntu on the mirror server itself, because Ubuntu Server sucks ass. In this case, it’s really not that hard to find a way. Set […]

Killing Floor 2 on Ubuntu Linux 18.04

Yes, it does work. The new Steam Play was announced quite some time ago, so now you don’t need to participate in any beta. Here’s how it works. If you have an NVIDIA card, install the graphics-drivers PPA to get the latest and greatest NVIDIA drivers: sudo add-apt-repository ppa:graphics-drivers/ppa sudo apt update Now find the […]

Edimax EN-9320TX-E 10GbE Ethernet Card on Ubuntu and Fedora Linux

Unlike the Asus XG-C100C, the Edimax EN-9320TX-E 10G Ethernet card won’t work OOTB, because you need some firmware magic to make it work. So first off, some prerequisites: yum install dkms vim-common git curl || apt install dkms git curl git clone -b vendor-drop/v0.3.6.16.1 https://github.com/acooks/tn40xx-driver.git /usr/src/tn40xx-001 cd /usr/src/tn40xx-001 curl -LO https://github.com/acooks/tn40xx-driver/files/2214805/x3310fw_0_3_3_0_9374.tar.gz tar xf x3310fw_0_3_3_0_9374.tar.gz make […]

Ubuntu 17.10 corrupts your BIOS

First they only destroyed your disks, then they went hand in hand with their wonderful Debian upstream onto rendering SSL useless without anyone noticing for years (manyeyeballs, aka the power of open source and inherent code review in action!), but now they finally went all in and killed your comp altogether. Awesome quality software in […]

AD integration changes in Ubuntu 16.04

I’ve written an extensive tutorial about integrating Ubuntu 15.10 with Active Directory. Today I’ve deployed our first testbed comp with 16.04 (beta2) installed. Joined it to AD, set up FDE, everything’s fine. Then the user complains he cannot sudo. Hmm, lemme check the sudoRole for typos. Nope, it’s fine. Let’s delete and recreate it. It […]

Integrating Ubuntu with Active Directory

Prelude You can run, but you can’t hide, sooner or later it’ll knock on your door. I was assigned with the task of providing our colleagues with Linux workstations. Previously we had Windows, which is no biggie. Then came OS X, which is far from being perfect, but still reasonably doable. And then came Linux… […]

Installing, Migrating & Upgrading Redmine with LDAP on Ubuntu

Preamble Note for CentOS users: please refer to my more recent guide, Redmine on CentOS 7 This article will guide you through the installation, migration and upgrading of a Redmine instance on Ubuntu Server 13.10. The article’ll also explain how to switch from an SQLite database backend to PostgreSQL. For authentication we’ll be using LDAP. […]