@maphew My situation is similar to yours, as I'm not really a developer (rather a #Sysadmin)... but I like to provide nice stuff from time to time. Heavily biased, as I like both #Python and #KDE / #Qt very much. So with all those disclaimers disclaimed:

#QtDesigner, which works great with #PyQt might be right for you.

Here's a nice introduction:

https://realpython.com/qt-designer-python/#creating-a-dialog-with-qt-designer-and-python

Let us know about what you choose and how it went!

If you want to raise your shell scripts to a new level, give `shellcheck` a try! It'll give you valuable feedback on the style of your shell code and on possible issues with it.

https://www.shellcheck.net/

(Also: Know when to switch to a proper programming language.)

#Linux #SysAdmin #SystemAdministration #Shell

#TIL there's and RFC about how NOT to name your computers. As a cow-orker says, not an Apr01 RFC.

> One machine was named "up"[...] Conversations would sound like this: "Is up down?"

https://datatracker.ietf.org/doc/html/rfc1178

#SysAdmin

sept. 08 16:32:21 mx postfix/smtp[123398]: 2AD809CC7B2: to=

, relay=gmail-smtp-in.l.google.com[2a00:1450:400c:c00::1b]:25, delay=0.98, delays=0.06/0.01/0.41/0.49, dsn=2.0.0, status=sent (250 2.0.0 OK 1757341941 ffacd0b85a97d-3d92d5197acsi11914604f8f.162 - gsmtp)

Omg 🙀, I totally missed the #Tutter instance' first birthday! It was on September 3rd.
Happy birthday 🥳 #Tutter!
Thanks all the users your support!

#anniversary #firstbday #Tutter #Mastodon #Fediverse #JoinTheFedi #decentralized #OwnYourOwnData #Selfhost #Sysadmin

Sometimes you need to run some scripts on your infrastructure and Puppet Enterprise Tasks feature gives you that option to do run an ad-hoc task on target environments with either an agent or agentless. Get a quick walk through with Barr and Stephen on how to execute a reboot on a target system so you can get an idea of how this works!

https://www.youtube.com/watch?v=9UbUiEJM9Lo

#SysAdmin #DevOps #Puppet

If your terminal ever gets confused by random control sequences, for example after you accidentally output binary data, there's a good chance you can restore order with the `reset` command.

#Linux #Shell #SystemAdministration #SysAdmin

je crois que le #sysadmin à oublié un petit détail : free bloque le port 25 en sortie...

a priori pas moyen de l'ouvrir tout seul...

quelqu'un connaît un #adminsys chez #free ?#CestPasPourUnAmi !

I’m looking for an app (ideally on Linux) that can scan a local SMB network periodically, pick all shared files and create an incremental backup. Is there such a thing ?

In a perfect world, this could upload an encrypted copy onto an external storage (OneDrive, Google Drive, whatever) and there would be a way to get back N days in time, because shit happens.

Boosts appreciated. :-)

#SysAdmin #backup

TIL about DNS.

https://as112.net/

#til #sysadmin #dns

Built RustNet: A network monitor with deep packet inspection and TUI for Linux/macOS

Shows real-time connections with:
- Process identification
- Protocol detection (HTTP, TLS/SNI, DNS, QUIC)
- Connection states
- Multi-threaded packet processing

GitHub: https://github.com/domcyrus/rustnet

#rust #networking #cli #tui #opensource #rustlang #sysadmin #linux #macos

#sysadmin

2.5 Admins 263: Seagate RAID

McDonald’s IT systems seem to be riddled with 90s-style coding errors, we finally know where the fraudulent hard drives came from, when IT workers go rogue, and ZFS on root without using FreeBSD or Ubuntu.

https://2.5admins.com/2-5-admins-263/

#podcast #sysadmin

Alt...

2.5 Admins artwork

The /proc filesystem was a genius idea giving the #sysadmin direct control of the Linux kernel. In this article, David Both explains how to change kernel parameters at runtime.

https://www.redhat.com/sysadmin/linux-kernel-tuning

Security is not a state. It's a process.

#infosec #opsec #sysadmin

I just had the misfortune of dealing with #Cisco "Secure E-mail" while dealing with a client and I must say its just red flags all over the place for me.
I'm sent an E-mail with an HTML attachment and told to save it and load it into my browser from my drive.
I would never advise a client to follow these instructions because of the potential dangers of saving and loading HTML files from attackers.
This then takes you on a ride to a sign up page ...
#security #sysadmin #email #encryption

Q: How do you figure out whether intermittent network issues are being caused by your computer's network connection vs. upstream packet loss?
Symptoms: A few times per hour I get a network connection failure, but when I repeat whatever just failed it works fine the second time. Some of these failures are reporting "Network as unreachable" as the error.
What are your favorite Linux-based tricks for debugging something like this?
More details in the replies.
#SysAdmin #Networking #Linux

Poll: How many screens do you work with? 🖥️

Vote + Boost 🔁 = ❤️

(Feel free to reply with how this setup helps you 👇)

#Linux #Arch #LinuxMint #Fedora #Debian #Ubuntu #Desktop #FOSS #Privacy #Security #OpenSource #Microsoft #Windows #TechNews #CyberSecurity #Tech #Technology #Apple #OS #iOS #MacOS #OperatingSystem #Monitor #Monitors #Screen #Screens #TV #OLED #2k #4k #HD #Job #Work #Productivity #Multitasking #Dev #DevOps #Development #Developers #DevLife #SysAdmin #TechCommunity

@matrix just an idea to improve backups:

Make exponential backoff like backups: last month, months 2-3 ago, mos 4-6 ago, 7-12moa, 2-3ya, etc. Or with N messages instead of N days.

Sounds like you could recover the fresher data first, then catch up, then restore backwards.

#backup #SysAdmin

Come to Zagreb September 24-28, 2025 and geek out with other BSD people at EuroBSDcon!

See https://2025.eurobsdcon.org/
Program https://events.eurobsdcon.org/2025/schedule/
Registration https://2025.eurobsdcon.org/registration.html

#openbsd #netbsd #freebsd #zagreb #eurobsdcon #conference #freesoftware #libresoftware #development #devops #sysadmin #networking #security

In case you only show up here on US holidays:

The #kickstarter for "Networking for System Administrators, 2nd ed" launches 16 September. I would appreciate your support. #sysadmin #n4sa2e

https://mwl.io/ks

#sysAdmin #Unix
Berkeley DB qui dit "Read-only file system" alors que les systèmes de fichier sont bien rw et que je peux y créer des trucs sans problème, ça dit quelque chose à quelqu'un ?

A new, magnificent article by @Linkshaender has been published in the BSD Cafe Journal: "Why "caffè" may not be "caffè""

I highly recommend reading it!

https://journal.bsd.cafe/2025/09/01/why-caffe-may-not-be-caffe/

#BSDCafeJournal #IT #SysAdmin

#sysAdmin #Debian
Aïe, après mise à jour, #Grub me dit "error: can't find command `echo'." C'est mal parti.

JVM essentials for Elasticsearch: Metrics, memory, and monitoring | Elastic Blog

https://www.elastic.co/blog/jvm-essentials-for-elasticsearch

#java #jvm #sysadmin

Just published a comprehensive FreeBSD Cheat Sheet for Linux Admins!

Covers all the essentials:
- Hardware info (pciconf → lspci)
- Network commands (sockstat is amazing!)
- Disk management & ZFS operations
- Service management differences
- Package management across systems

Perfect for Linux admins diving into FreeBSD or anyone working across both systems. Includes 100+ command comparisons and real-world examples.

https://codeberg.org/Larvitz/gists/src/branch/main/2025/20250829-FreeBSD_CheatSheet_Linux.md

#FreeBSD #Linux #SysAdmin #DevOps #OpenSource #ZFS

"Just use common sense" 👏

#Linux #Infosec #CyberSecurity #OpenSource #FOSS #LinuxMemes #Meme #Programming #Hacking #SysAdmin #TechHumor #Ubuntu #Debian #Fedora #LinuxMint #Arch #ArchLinux #Terminal #CyberAwareness #DevOps #Antivirus #GitHub #Desktop #Privacy #Security #TechNews #Microsoft #Windows #Apple #MacOS #iOS #OS #OperatingSystem

Alt...

Four-panel comic: A drowning hand labeled "Linux users asking for antivirus" reaches up. A hand labeled "Redditors" reaches out to help. Instead of helping, the hand pats the drowning hand and says, "You just need to be a programmer to understand what this random script from GitHub does." The drowning hand disappears underwater.

I have a #PCEngines APU4 machine with an external m.2 in a USB encase. It used to boot from it, but not anymore. I used to use a USB stick to boot with some #GRUB + #Linux + initrd ISO image, but can't remember which.

Tried several ISOs (gparted, grml, debian installer, others). Many are not even detected by the (#UEFI less) SeaBIOS 1.12.0.1 (see pic), and the few that do can't be told to boot from another disk.

Need to find or create a BIOS bootable disk, docs and help appreciated.

#SysAdmin

Alt...

SeaBIOS 1.12.0.1 booting, showing the boot menu and the setup screen showing no signs of UEFI support or detecting the external disk as bootable.

#sysAdmin

À force d'essayer plein de trucs différents, la charge de la machine est tombée de 20 à 0,5.

#Unix

#TIL

* `/etc/sub{uid,gid}` to map user ids in containers to host ids. https://rootlesscontaine.rs/getting-started/common/subuid/

#SysAdmin #Linux

EuroBSDCon 2025 in Zagreb September 24-28 https://2025.eurobsdcon.org/
Program https://events.eurobsdcon.org/2025/schedule/
Register https://2025.eurobsdcon.org/registration.html

#zagreb #freebsd #netbsd #openbsd #conference #development #devops #sysadmin

TOMORROW!
Get ready to finally understand your network data.
We're going live to break down everything from #SNMP headaches to modern tools like gNMI, Suricata, and more.

⏰ Set a reminder for August 28th, at 10 am PDT | 6 pm BST | 7 pm CEST!

https://bit.ly/3JAZloa

#LiveStream #SNMP #SysAdmin #SRE

Yes, yes, I write entire books as pranks. But it's rare that even the book's title is a lie.

This is one of those times.

Coming 16 September on #Kickstarter: "Networking for System Administrators, 2nd ed." #sysadmin

https://mwl.io/ks

Sigh. So apparently Microsoft bounces e-mail to a non-existing recipient with 550 5.4.1 Recipient address rejected: Access denied.

How vague could they be? Something like "550 Requested action not taken: mailbox unavailable" or "550 5.1.1 Mailbox "nosuchuser" does not exist" is clear and standardised.

#email #mailops #sysadmin

Tonight I made a simple, yet destructive (or at least partly) mistake: when I told FreeBSD which disk to destroy, I accidentally gave it the system disk of my little home server. This happened because it had the same size as the external SSD I had just plugged in, and I got confused.

I lost some reproducible configurations (the server’s name was in fact tempfbsd01), but I took the chance to run an experiment. My home server runs FreeBSD in read-only mode (that's the part I destroyed). From there, I manually enable the external drives (encrypted with GELI) and, in turn, the ZFS pools. Then I start the various jails and the (single, Proxmox Backup Server) VM.

Since I also have another test box running SmartOS, I decided to experiment: I connected the disks to it, created a FreeBSD bhyve VM on SmartOS, and passed the entire disks through to the VM. I reconfigured the FreeBSD VM with the bare minimum and booted it all up. The jails with BastilleBSD started without any issues - obviously the Proxmox Backup Server VM itself is still missing, but I’ll deal with that later.

I’m tempted to leave everything like this for a while.

And yes, for anyone wondering: I had fun 🙂

#FreeBSD #RunBSD #illumos #SmartOS #DisasterRecovery #IT #SysAdmin #Homelab

Use setgid on shared directories: `chmod g+s /shared/project`. New files inherit group ownership, preventing permission chaos when multiple users collaborate.

🔗 Learn more in my course: https://monospacementor.com/courses/linsys-1/

#Linux #SystemAdministration #SysAdmin

jiangcuo/pxvirt: A fork of Proxmox VE for ARM and LoongArch architectures - #PXVIRT is an open-source virtualization platform derived from #Proxmox VE, specifically adapted to support ARM and LoongArch architectures. This project originally began as "Proxmox-Port" and has now evolved into a fully independent fork under the new name PXVIRT.
https://github.com/jiangcuo/pxvirt
#Proxmox #virtualization #sysadmin #networking #freesoftware #arm
via https://magicfab.ca/liens

Time on system
Tuesday, 26 August 2025 10:40
Kernel and CPU
Linux 6.8.0-65-generic on x86_64
Processor information
Intel(R) Core(TM) i5-6400 CPU @ 2.70GHz, 4 cores
CPU temperatures
Core 1: 42 °C Core 2: 41 °C Core 3: 41 °C Core 4: 41 °C
System uptime
27 days, 22 hours, 34 minutes
Running processes
228

Well, that's all OK then - feet up!
#SysAdmin

I have a client who uses Proxmox and its backup server. Last week, I upgraded the backup server from Debian 12 to 13. The backup server "sleeps" most of the day, so it also runs Docker for a Gitea runner. Everything seemed fine initially.

Then, my client messaged me yesterday because the runner had stopped working. When I logged in, I found that for some reason, the runner could no longer connect to the Docker socket, even though I was passing it the official way. I tried the same thing on a different Debian 13 server and got the same result. But, on a Debian 12 VM using the (old) Docker from the Debian repos, everything worked perfectly.

This incident just reinforces my point that for production servers, it’s crucial to use solutions that don't introduce breaking changes between releases. It seems to be an Apparmor issue (thanks @gyptazy for the head up!).

Because this component was non-critical and easily replaceable, I didn't pay much attention to testing it right after the server upgrade.

#IT #SysAdmin #RunBSD

Hey #windows11 people, do NOT install KB5063878 or KB5062660 (preview).

It's bricking SSDs and I'm currently dealing with rolling back damage from this. (Noticed when I couldn't mount SMB shares anymore)

If you already have it installed, roll back with: wusa.exe /uninstall /KB:5063878

and: wusa.exe /uninstall /KB:5062660

#Windows #Microsoft #sysadmin

https://www.windowslatest.com/2025/08/20/microsoft-is-investigating-windows-11-kb5063878-ssd-data-corruption-failure-issue/

Time for today's edition of the #TechIsShitDispatch. Here's the tech-related shit I've had to wade through since yesterday.
Part of why I post these is for the catharsis, but I am also absolutely trying to make a point here. I want more people to wake up to how bad things are and get more people agitating and demanding better.
We deserve better.
So let's dive in.
#SysAdmin #ITDIY #HealthInsurance #GitHub #Microsoft #Windows11
🧵1/10

Bright and early Monday morning?

Yippee.

You're probably at work. My next book supposedly teaches networking for #sysadmin types, but really, it's about how to survive employment. Coming to #Kickstarter 16 September.

https://mwl.io/ks

What are we using these days as bare metal hypervisor for Windows, Linux and BSD guests?

Last I setup a server like this I was paying for ESXi. Not a fan of proxmox. It seems like XCP-ng is something people are divided in if it’s good or not.

I’m okay setting up KVM and putting a web interface on top, if the interface works and provides a console so I don’t have to mess with RDP etc on clients for basic administrative tasks. #devops #ops #sysadmin

Here's today's dispatch from the "tech is shit" battlefront, in which I bitch about the things that went wrong for me with tech since my last dispatch that I had to deal with.
#TechIsShitDispatch #SysAdmin #ITDIY #BestBuy #rsync
🧵1/8

@mwl The 1st edition IMHO is among the best books available on #networking, so... I just can't wait for the new one!

#sysadmin

Ça vous est déjà arrivé, une barrette de ram qui "tombe en panne" ?

mon pc a planté et bip "no memory detected" au démarrage.

Ça marche avec une autre barrette, mais passer de 8G à 4G, ça pique un peu. Et non je n'ai pas d'autre emplacement.

#sysadmin
#monday

For the weekend crowd:

"Networking for System Administrators, 2nd ed" now has a full Kickstarter page, with a book description and everything. It starts by confessing the title is a lie.

https://mwl.io/ks

I'd appreciate folks spreading the word. #sysadmin

Invincible #Postgres Saga, episode 3...

(At least this didn't happen on production )

Earlier this week I tried to do some tests on my "wonderful" misconfigured testing environment. I had some errors here and there and they had to reveal themselves during my experiment...
To make everthing up-to-date I had to refresh data in my app, which uses #Patroni #Postgresql database. Of course it crashed when I tried to do it. It didn't turn down whole cluster, only that one server, and in theory it still had normal API access. I expected it to come back quickly after I fixed things breaking my servers. But for some reason it couldn't. It didn't even try, at least in any visible way.
Seriuosly it was the most disturbing thing there It should try to do something, right?!?
I tried to restart services in panic, without any result. It was late and I finished work for that day. Tired and worried I had to leave it stuck in "cannot reach consistent state" stage.

Next day I thought about doing force reinit or something to move it. But when I log into that server... Everything just worked :neofox_scream_stare_256:
I checked logs... Almost nothing special, just like database was stuck and after ~14 hours suddenly started working. Only one line telling backup was restored.
Damn, what backup?!? Why I don't understand what it did?!? And why it needed so much time?!?

At least I had working environment and didn't had to wonder what to do. Maybe my first chaotic attempts to force it to work did more harm than good and I should just leave it...

Someone should write in docs, which API status means "just leave me alone, trying to fix things" It would be easier.

#sysadmin #admin #IT

You all probably thought I was exaggerating when I said something went wrong with my IT every single day and I often spent hours dealing with the problems. I wasn't exaggerating. Here's today's edition of "computer shit I had to fix"…
#IT #SysAdmin #ITDIY
🧵1/14

That's all for today. I'm sure you're all on the edge of your seats waiting to see what's in tomorrow's thread of computer shit I needed to fix.
#IT #SysAdmin #ITDIY
🧵14/14

It seems I miss #debugging at work so much I had to spend Saturday afternoon updating everything on my VPS

#nerd #IT #Sysadmin #selfhosting

Merci @siosm !

**OpenSSH client side key management for better privacy and security**

https://tim.siosm.fr/blog/2023/01/13/openssh-key-management/

#SSH #SysAdmin #Security

My home desktop - 1 March 2000 - a Pentium 233 MMX.
The OS was Debian Linux - you can see a printed Tux near the keyboard.
No broadband connection, just a 56k modem.
Iomega Zip drive - so I could download stuff at Uni and bring it back home.
One year later, this became my first 24/7 server.

#IT #SysAdmin #Linux #Debian #Throwback #Memories #Vintage #OldPhotos #OldTimes #OldNerd #OldMe #VintageSetup

Alt...

A late 1990s - early 2000s computer setup on a white desk, featuring a large beige Sony CRT monitor, a beige tower PC with front-facing floppy disk and CD-ROM drives, an external 56k modem, a beige keyboard, and various scattered items such as CDs, cables, and glasses. Behind the monitor is a large black Sony speaker, and a motorcycle poster hangs on the wall. The photo’s timestamp reads “1.3.2000.”

For the weekend crowd:

"Networking for System Administrators, 2nd ed" now has a full Kickstarter page, with a book description and everything. It starts by confessing the title is a lie.

https://mwl.io/ks

I'd appreciate folks spreading the word. #sysadmin

Fuck yeah !

#YunoHost 12.1 release / Sortie du YunoHost 12.1 - Announcements

https://forum.yunohost.org/t/yunohost-12-1-release-sortie-du-yunohost-12-1/38294

Merci @yunohost !

Soutenons-les: https://yunohost.org/donate.html

#SysAdmin #ServerAdmin

Time for today's edition of "what went wrong with the computers today"…
When I sat down at my computer this morning, the Windows 11 upgrade I kicked off yesterday had indeed failed as I had suspected it was going to <https://federate.social/@jik/115069952179945603>, but not in the way I expected. My VM was on the boot screen with the spinning Windows booting animation, and on top of that was a pop-up: "Please insert external drive".
#SysAdmin #ITHelpdesk #HomeIT #ITDIY
🧵1/23

Switched phone to Consumer Cellular.

The wifi hotspot has great ipv6 connectivity, and zero ipv4 access.

It has begun. #sysadmin

The "Networking for System Administrators" #kickstarter now has a launch date and a description. #sysadmin #n4sa2e

https://mwl.io/ks

I'd appreciate interested folks sharing the word on any appropriate forum. Thank you!

The "Networking for System Administrators" #kickstarter now has a launch date and a description. #sysadmin #n4sa2e

https://www.kickstarter.com/projects/mwlucas/networking-for-system-administrators-2nd-edition

I'd appreciate interested folks sharing the word on any appropriate forum. Thank you!

It took me a few hours of futzing around to set up a dual-display Ubuntu VM on my workstation directly connected to my network. I'm going to use it as a presentation host that I can remote control via VICREO Listener from a Companion VM that runs in my homelab and is controlled by a Stream Deck. The presentation display is shared via OBS, the presenter display is for me.
These are the lengths I'm going to achieve maximum production value in my #Linux #SysAdmin course.
https://monospacementor.com/courses/linsys-1/

The "Networking for System Administrators" #kickstarter now has a launch date and a description. #sysadmin #n4sa2e

https://www.kickstarter.com/projects/mwlucas/networking-for-system-administrators-2nd-edition

I'd appreciate interested folks sharing the word on any appropriate forum. Thank you!

This morning I took some time to jot down how I temporarily lost all the mail on my family's mail server last week, how I recovered, and what I've done to minimize the impact of similar events in the future.
Some of this was my fault, but the bigger TLDR is that IMO Cyrus imapd is a big pain in the ass, I should probably switch to a different IMAP server, but I don't have time to deal with that right now.
#CyrusImapd #SysAdmin #MailServer #backups #IMAP #btrfs #PostMortem
https://blog.kamens.us/2025/08/21/how-i-lost-my-familys-email-recovered-most-of-it-and-made-sure-it-wouldnt-happen-again/

OK, so here is my #introduction !

I live in the most isolated capital city in the world, #Perth , and therefore on Whadjuk #noongar boodja. I pay my respects to the traditional custodians of the land, and their Elders - past, present, and emerging.

I am male (he/him), and married to the amazing artist @leece .

I have been a #Linux #Sysadmin for most of my professional life, and use Linux or derivatives exclusively at home.

For fun, I play #rpg games, and #boardgame . I also swim as a #mermaid (well, mer-dude), and ride a three-wheeled human-powered vehicle called a Me-Mover. I have a Hobie Outback pedal-powered kayak, which takes me back to my past as a Sea Scout on the Swan. I enjoy playing with #lego, #cooking, #preserving, and many, many other things.

I am #teetotal (and have been all my life) but love making mixed drinks, and have an extensive #zeroproof bar.

I am an amateur #photographer without any particular speciality, but I do particularly like taking shots of #birds (especially #raptors ), and other mer-folk. I also enjoy shooting #pinhole B&W, and play with in-camera #cyanotype (about which I have written extensively on my blog) . To round things out, I take quite a few #solargraph images.

For the past few years, I have been learning Nyoongar (primarily the Marribank).

Recently I have fallen into writing - you can find my two on-going tales as #CerianandVaranWar and #GwenAndGrey . You can also find links to all my stories here: https://rdmasters.lympago.com/p/microfic-and-tootfic-list.html

Here is a shot of me taken by the amazing @leece on #Wadjemap .

Alt...

A merman with red hair swimming away. He has a red, blue, and green lower body and tail, and is swimming above a sandy sea floor.

N4SA2e sent to copyedit!

https://mwl.io/archives/24396 #sysadmin #n4sa2e

About 1995, I troubleshot many DNS problems that involved zone files with impossible IPs like 192.0.2.999.

Seems BIND won't accept that in a zone file any more?

Which, I mean, that's good! But I'm wondering what other obsolete checks my mental Nagios is performing... #sysadmin

Hey there #Fediverse! Can someone point me to an article about that company whose app installs what equates to a proxy on someone's phone that lets them use it for AI slop bot scraping websites?

This would be those Chrome/112 user agents from Brazil and Vietnam.

Help a #sysadmin out? Thanks!!!

EDIT: Found the information I needed! Many thanks to @jwildeboer for refreshing my memory!!!

Si quelqu'un a un bon tutoriel pour migrer de Postfix + Postgrey + Spamassassin + Clamsmtpd + Opendkim à Postfix + RSpamd, je prend.

#AdminSys #SysAdmin #Mail #SPAM

Random update that hits both my #photog and #sysadmin roles; I ran out of disk space for my raw #photography recently. I have a home-made #NAS box with a pair of disks in #RAID1 running Rocky Linux and I needed to get more space. I spent an evening shopping around for the best value I could get in local disks and that required driving to three Canada Computers locations to pick up one drive at each so I could build a #RAID5 array and not deal with this again in the near future. [ continues ]

so… has mosh been audited yet?

how do we feel about it, security-wise?

#InfoSec #SysAdmin #Linux

I have used 203.0.113.0/24 as my internal network for several years. It's reserved for documentation, and I write documentation, so that saved me much trouble.

Amazon's Kindle has now blocklisted those addresses. Which means SWMBO's Kindle doesn't work.

Time to renumber. #sysadmin

Well, this was a surprise. Decided to run a simple LAN ping test between two of my access points, and the results were not what I expected.

Contender 1: The "mighty" Ubiquiti UniFi AC Lite
Contender 2: The tiny MikroTik mAP Lite

The winner? By a long shot, the MikroTik! It showed much better stability and lower latency.

The Stats:

- MikroTik: Avg 8.2ms / Jitter 10ms

- Ubiquiti: Avg 15.4ms / Jitter 32.1ms

Goes to show that size isn't everything in the world of networking.

#SysAdmin #NetworkGear #Ubiquiti #MikroTik #WiFi #HomeNetworking #IT #HomeLab

#sysadmin

Liberated from: http://www.grosbein.net

Soon a new OpenBSD release, v 7.8, will be on the horizon. Time prepare and to reprise "You Have Installed OpenBSD. Now For The Daily Tasks." https://nxdomain.no/~peter/openbsd_installed_now_for_the_daily_tasks.html (also https://bsdly.blogspot.com/2024/09/you-have-installed-openbsd-now-for.html) #openbsd #install #sysadmin #devops #maintenance #packages #freesoftware #libresoftware

My friends, I'm so excited and happy to introduce a new project: the illumos Cafe!

The positive and constructive spirit of the BSD Cafe, created and maintained by all the friends who participated from day one in building a strong and friendly community, deserves to spread to other operating systems. Because there are other OSes that deserve attention, certainly more than they're getting right now.

Operating systems based on illumos (like SmartOS, OmniOS, Tribblix, OpenIndiana, etc.) are mature, stable, secure, and perfectly usable for a wide range of tasks. ZFS is native, zones are an excellent method for containerization, and bhyve and kvm coexist beautifully - and so much more, too much to list in a single post.

So from today, the illumos Cafe will stand alongside the BSD Cafe in creating a positive, respectful, and growth-oriented (but also relaxing!) environment, starting right here in the Fediverse with a Mastodon instance and a snac one.

I've written an introductory article about the project, including some technical details. I invite everyone interested to read it: https://it-notes.dragas.net/2025/08/18/introducing-the-illumos-cafe/

Choose your table, take a seat and enjoy your time at the illumos Cafe!

#SysAdmin #IT #BSDCafe #illumosCafe #Community #OpenSource #OSS #illumos #SmartOS #OpenIndiana #ZFS #bhyve #kvm #Fediverse #Mastodon #snac #ITNotes

#spam #DNS #sysAdmin

"Sender address rejected: Domain not found; from=<mailguardwebmail@laqti.clicklhegal.com>"
Il y a encore des spammeurs qui utilisent un domaine non-existant (ce que tous les serveurs de messagerie sérieux rejettent) ? C'est si dur que ça d'utiliser un domaine réel ?

#Linux Weekly Roundup for August 17th, 2025: #NVIDIA 580 improves #Wayland support, #KDE Gear 25.08 adds new features and improvements to your favorite KDE apps, #VirtualBox 7.2 adds initial support for Linux kernel 6.17, #GNOME 48.4 improves GNOME Software update notifications, SparkyLinux 8.0 rebased on #Debian 13, Grml 2025.08 enhances #SysAdmin tools, GNOME 49 desktop enters public beta testing, Debian's 32nd birthday, GNOME's 28th birthday, and mroe https://9to5linux.com/9to5linux-weekly-roundup-august-17th-2025

#OpenSource

Alt...

9to5Linux Weekly Roundup - August 17th, 2025

#Debian Trixie-Based Grml 2025.08 Distro for #SysAdmin Is Out to Celebrate Debian’s 32nd Birthday https://9to5linux.com/debian-trixie-based-grml-2025-08-is-out-to-celebrate-debians-32nd-birthday

#Linux #OpenSource

Alt...

Screenshot of the boot menu of the Grml 2025.08 live system.

I did something crazy - and it works.
And I think in the next few days, I'll also do the crazy thing of making it public. I think some people will like it.
Because - I'll say it again - I'm always against monocultures.

Stay tuned!

#IT #SysAdmin #OwnYourData

Supported by @LPI @linuxmagazine and @adminmagazine #OSJH was built for #OpenSource professionals seeking technical and non-technical positions. Sign up for job alerts and find the job that's right for you
https://opensourcejobhub.com/jobs?utm_source=smm
#jobs #career #OpenSource #FOSS #engineer #SoftwareDeveloper #marketing #sales #tech #DevOps #sysadmin

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(image of a rocket taking off from a laptop) Looking for your place in open source? Set up job alerts and get started today on Open Source JobHub

Those of you upgrading #Debian 'cloud' images to Trixie: if you are using static IPs in your VMs (say, to talk to your bridge), the updated 'cloud-init' will drop a a '50-cloud-init in your /etc/network/interfaces.d/ defining DHCP for ifup. And so while your VM will dist-upgrade fine, you'll lose contact on reboot. Eek.

To fix, put 'network: {config: disabled}' in an '/etc/cloud/cloud.cfg.d/99-custom.cfg', or just dot-prefix the ''50-cloud-init'' & your static net will come up fine #sysadmin

Tired of fighting with SNMP and confusing network data? 😤
Join our "Nonsense Networking" live stream where we make sense of network #metrics, #logs, and #flows. We'll cover the common pain points and show you better alternatives.

📅 August 28th at 10 am PDT | 6 pm BST | 7 pm CEST

https://bit.ly/45ykGpy

#NetworkMonitoring #SysAdmin #SNMP #Netflow #Prometheus

Mon client souhaite mettre en place un bastion #SSH, en coupure, avec de l'audit
La première suggestion est the Bastion, d'OVH que je trouve complexe même si j'aime le Perl
Je viens de trouver Teleport : avez-vous d'autres suggestions ?
#DevSecOps #SysAdmin

Serving a simple website from a Jail with Bastille

A great article by @jhx for the BSD Cafe Journal!

https://journal.bsd.cafe/2025/08/13/serving-a-simple-website-from-a-jail-with-bastille/

#FreeBSD #RunBSD #BastilleBSD #Bastille #IT #SysAdmin #BSDCafeJournal

I've never hidden my admiration for #illumos-based systems. I have a few setups based on #OmniOS and #SmartOS, and they're solid as a rock. I like them both: OmniOS is more "malleable", while SmartOS is more of a hypervisor like #xcp-ng or #xen - meaning you install it on the host and delegate everything else to the zones.

I also love #FreeBSD jails, but zones sometimes cover use cases that jails can't (and vice versa). For example, imposing RAM limits in jails works, but it effectively "denies more ram" to a process when it requests more memory. The end user doesn't see this directly. On illumos, the user sees everything. I have some `lx` zones with Debian and Virtualmin, and users have never noticed that they aren't really on #Linux. A free or top will show only the assigned RAM.

And that's one of the biggest problems with open-source operating systems: they all have something good, and I always feel the urge to use them all! 🙂

#OpenSource #IT #SysAdmin

"This paper presents implementations that match and, where possible, exceed current quantum factorisation records using a VIC-20 8-bit home computer from 1981, an abacus, and a dog.

We hope that this work will inspire future efforts to match any further quantum factorisation records, should they arise."

Note that this is three attempts to match current quantum computing records, not a single attempt utilizing all three tools.

(The IACR is a legit cryptology organization. Been around for years and years.)

https://eprint.iacr.org/2025/1237.pdf

(h/t @cstross )

so, #sysadmin sorts: chill your quantum computing worries

When I open a project's web page and find a guide to deploy it with Docker and also without it, I'm already liking that project.

#IT #SysAdmin

As a guy who used to install #squid for #webproxy #caching on all his edge systems (before they were called edge systems), I'm still a little annoyed at HTTPS-everywhere for breaking caching systems.
If you have half a dozen or more machines running the same OS on your network, caching means not downloading those updates repeatedly.
Ditto if you have a bunch of machines (virtual or not) running the same docker images.
#rant #sysadmin #bandwidth

A lifetime of backups : https://ludovic.hirlimann.net/2025/08/a-lifetime-of-backups.html

#sysadmin #backups #downthememorylane

A relire : Surveiller la disponibilité d'un site avec Uptime Robot

https://blog.shevarezo.fr/post/2016/11/15/surveiller-disponibilite-site-uptime-robot

#dashboard #sysadmin #uptime @uptimerobot

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#Mastodon #FediAdmin #MastodonAdmin #MastodonRelay #Fediverse #SelfHosted #SysAdmin #Federation