Topic: Virtualization and containerization
Presenter: Richard G
Physical location: Strathcona County Library, Birch Room
This month we met physically as well as virtually. It was so good to see/meet people in person again!
Richard led a very well-presented discussion on Emulation, Virtualization, and Containerization.
Topic: Group discussion about meeting in person again
Topic: Remote desktop
Presenter: Manuel
Manuel walked through how to set up a remote desktop connection between Linux and any other operating system, using rdp (remote desktop protocol). rdp is Microsoft proprietary, but it has become the de-facto standard protocol.
First of all, the machine you want to connect to must provide the remote desktop service using rdp. The host OS controls how many simultaneous rdp sessions are permitted.
Second: install and configure client software:
Linux – xrdp, rdesktop / FreeRDP, Remmina, Vinagre
Win – MS RemoteDesktop
MacOS – MS RemoteDesktop
Other operating systems provide proprietary or OS-agnostic remote desktop services:
* VNC (platform independent; RFB remote frame buffer protocol = open source, not standardized)
* macos: Apple Remote Desktop (proprietary; uses RFB protocol)
* ChromeOS: Google Chrome Remote Desktop (proprietary; within Chrome browser) remotedesktop.google.com/
* DWS (platform independent, browser-based) dwservice.net
If you would like to review the presentation please visit our nextcloud instance here: https://nextcloud.elug.rocks/index.php/s/AkaeFBHDBZ8DFpL?path=%2F2023.01%20Remote%20Desktop.
Links:
c-nergy.be/products.html
www.apalrd.net/posts/2022/xrdp_intro/
Topic: Year in review
Presenter: Everyone
This was a very informal affair, more of a hang-out and chit-chat about random Linux-related things. Some of the topics and references that were shared:
Raspberry Pi
hardware:
pcper.com/2022/12/fractal-ridge-slimline-mini-itx-case-review/
lian-li.com/product/a4h2o/
memoryexpress.com/Products/MX00118325
j-hackcompany.com/?product=j-hack-pure-x
mariadb.com/kb/en/what-is-mariadb-galera-cluster/
Helm-Kubernetes, LAMP, dovecot:
faun.pub/nextcloud-scale-out-using-kubernetes-93c9cac9e493
quay.io/realshadow
Certificates, SSL
ProxMox
port forwarding
transmission, torrent
announce servers
PineTab
micro-box for print/file server
Topic: vlans
Presenter: David
David talked about how to set up a vlan, showed his setup for how he does so, and we discussed some of the issues around segregating networked devices and keeping your private networks private.
Topic: None, really. Just sharing about random projects and things.
Presenter: Everyone, but mostly Rajiv because he likes to talk.
Rajiv showed us the Deezer command line script that he modified. (Deezer is an online streaming music player client.)
Rajiv also showed us some of the tricks he has up his sleeve for packet capture and analysis.
Yes, of course there was vim.
David had upgraded some Debian servers from 7 to 8 to 9 to 10 to 11. Yes, step by step, including resolving some circular dependencies. Fun fun fun for everyone. K maybe not really.
Manuel wrote a *nix-load of kubernetes container scripts, way more than his fair share.
Rick is still playing with his RaspberryPi server.
Jochen used to work at a Volkswagen factory for many years. Now he is learning linux.
Robert was just there, directing traffic. As usual. Oh, by the way, the btrfs check --repair appears to have been successful. Yay!
Topic: SSH; Or, as Rajiv put it: “Holy SSH!!t”
Presenter: Rajiv (and yes, there was some vim as well.)
Rajiv showed us some of the more advances options and uses of SSH, including how to connect through multiple layers of networked machines… FOR EDUCATIONAL PURPOSES ONLY, of course. 😉
If you want to follow along on this educational journey follow this link and watch the video
Containers are a convenient way of isolating applications from the operating system without having to support the overhead of one or more virtual machines.
A container is like a “slimmed down” version of a virtual machine, in that it contains only enough binaries to support the application(s) that you want to run.
Manuel showed us how to build and manage and publish your own container using buildah.
Topic: Repositories
Presenter: Manuel (with help from David and others)
Manuel highlighted the different repository managers for several distributions. The purpose of repositories was discussed. In a small demonstration he walked us through managing the sources and lists that make these repositories work.
During the demonstration of apt, Manuel showed how to install a package and the different ways of removing or purging packages. He added a separate repository and showed how to manage the keys as well as installing software from that repository.
Topic: Jupyter notebook
Presenter: Josemar
Josemar showed us the wonders and marvels of Jupyter notebook, an open-source, interactive and extensible data science and scientific computing tool.