Language Selection

English French German Italian Portuguese Spanish

Debian: IMA/EVM Certificates and EasyOS Updates

Filed under
Debian
  • Russell Coker: IMA/EVM Certificates

    I’ve been experimenting with IMA/EVM. Here is the Sourceforge page for the upstream project [1]. The aim of that project is to check hashes and maybe public key signatures on files before performing read/exec type operations on them. It can be used as the next logical step from booting a signed kernel with TPM. I am a long way from getting that sort of thing going, just getting the kernel to boot and load keys is my current challenge and isn’t helped due to the lack of documentation on error messages. This blog post started as a way of documenting the error messages so future people who google errors can get a useful result. I am not trying to document everything, just help people get through some of the first problems.

    I am using Debian for my work, but some of this will apply to other distributions (particularly the kernel error messages). The Debian distribution has the ima-evm-utils but no other support for IMA/EVM. To get this going in Debian you need to compile your own kernel with IMA support and then boot it with kernel command-line options to enable IMA, in recent kernels that includes “lsm=integrity” as a mandatory requirement to prevent a kernel Oops after mounting the initrd (there is already a patch to fix this).

  • Flsynclient compiled in OE for next Easy

    Psynclient is a good idea, it is a shell script that uses gtkdialog. But we have had trouble with it.
    We used to use 'flsynclient', which is a compiled binary that uses the FLTK GUI library. Back in the Pyro-series, I compiled it in OpenEmbedded, but failed in the Dunfell OE. FLTK is a C++ library, and a change in the GNU compiler broke the build in the OE cross-compile environment.

  • Foomatic PPDs now in EasyOS

    ...his post has a link to another post, reporting "filter failure". I don't know about that, however a first step will be to put all the PPDs into EasyOS.
    I previously thought that I had to install 'foomatic-db-engine' and 'foomatic-db' to get the PPDs, however, Debian has a DEB with them already extracted, named 'foomatic-db-compressed-ppds' -- which does not require the previous two DEBs.
    There is a package 'foomatic-filters', which provides an executable 'foomatic-rip', however, 'cups-filters' provides that executable. So also, 'foomatic-filters' is not required.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.