sysadmin

Current job is killing me with the stress. I don't want the last thing I see to be a Teams invite.

What are some job hunting resources for remote tech jobs these days?

#getfedihired #sysadmin #stress

Very pleased to present another round of Tunnel and Fortress, live classes in the design, deployment & administration of self-hosted, tightly secured & sovereign server infrastructure.

The classes draw from 2 decades deploying dozens of servers & services for orgs & groups, big & small, & often with powerful adversaries.

I want to teach you to be able to do the same, to get the communities you care about off Big Tech.

https://video.nikau.io/w/9RVN23fgj7AeMVmVrr8so9

https://learn.nikau.io/courses/course-v1:Nikau+TF2+2025_T4/about

#exitbigtech #sysadmin

I turned a tiny #Mac mini into my own #Mastodon server—secure, low‑maintenance, and running like a dream. Here’s the full build, from #Docker to #Cloudflare Tunnel, and why #SelfHosting doesn’t have to be a headache.

#Fediverse #ActivityPub #HomeLab #DevOps #SysAdmin

https://phoenixtrap.com/2025/09/21/my-mini-mastodon-server/?utm_source=mastodon&utm_medium=jetpack_social

If you are thinking about tinkering with your homelab, but are new to it or not sure what you’re doing, we’d be happy to help.

We are an authorized vendor or partner for some cool products:
👉 @1password password management
👉 Duo MFA and SSO
👉 @mikrotik networking hardware
👉 Ubiquiti networking gear
👉 45Drives servers and NAS

All consultations are free, and we’ll give any Fedi-friends a sweet deal on anything else!

Email sales @ sasquatchnetworks.com or DM us with any questions you might have!

#techsupport #homelab #networking #server #cloud #linux #sysadmin #selfhosting #1password #mikrotik

What a day..
Crash serveur (saturation mémoire), il ne reviens en pas au reboot et c'est le seul (vieux) serveur sans accès kvm!
Bon, je peut vous dire que l'on maîtrise la restauration depuis les backups...
Et que puppet (ou tout autre outils de gestion de conf), c'est génial pour remettre en service ailleurs from scratch !

On va dire qu'aujourd'hui j'ai bien mérité mon salaire, j'allais dire: pour une fois! mais j'ai de plus en plus de collègues sur mastodon, faut dire que cette manie d'envoyer les propositions de postes sur le fedivers...

En vrai, ça m'a fait plaisir de voir qu'on a eu presque que 5 heures d'interruption d'un service. Et encore c'est principalement du temps de restauration.

#sysadmin

Under the hood update!

I’ve finally retired the old cron + sh setup for the weather bots. It served us well, but it had a major flaw: if I rebooted the server while it was posting, the job just died halfway. If the server was down during a scheduled slot, the forecast was lost forever.

So, I wrote a custom Python daemon to run inside the FreeBSD Jails.

It’s stateful now. If a crash happens at city 15 of 50, it resumes exactly there on reboot.

If the server naps/is rebooting during a scheduled run, the bot realizes it missed a slot and runs immediately upon waking up.

#FediMeteo #SysAdmin #Python #FreeBSD #Coding #SelfHosted #OwnYourData #StayTuned

How to decrease the size of #akkoma database?

I have tried everything from the docs but it didn't change a bit.

#pleaseboost #sysadmin #help #activitypub

I just published “I Quit Updating Hugo or: Why I Use Hugo v0.122.0” at
https://www.ii.com/hugo-update-nope/
As always, feedback is welcome!
#InfiniteInk #GoHugo #Hugo #Tech #WebDev #SysAdmin #SSG #Byℵ #ByNM

OK, here we go. The 4th run of the Tunnel training.

Learn best-practice server security & computer networking fundamentals while building up your own high-performance, censorship-resistant VPN in Iceland. Generate configs as easy-to-use QR codes to give out to friends, family & your activist mates to protect them in this mad era of runaway surveillance, automated attacks and account theft.

https://courses.nikau.io/tunnel/

March 27. 4x4hrs. No prior skills required.

#selfhosting #sysadmin #privacy

You will not believe the trick-or-treat trick Microsoft just pulled!

#Microsoft #Azure #Outage #SysAdmin

Oh good god the AI trap on the inkscape website has twelve million hits. That's the hidden url that bots are told not to index, but ai bots LOVE to hit that thing.

But attacks continue to increase.

I'm going to have to decide if I need to block t-mobile and other mobile carriers because of all the malware on android phones being used as ai bot sources.

#foss #floss #sysadmin #ddos #ai #inkscape

Me: I'm gonna write #openzfsmastery in order. No bouncing around in the manuscript, just clean text from beginning to end!

Also me: My test host needs the new compatibility flag for the root pool. I guess I better jump ahead four chapters and write that. #sysadmin #writing

What should I do guys? 🤔

#sysadmin #networking

You haven't truly lived the life of a #sysadmin until you're googling around to figure out some issue and find a post about it where someone's asking the exact same question and... it's you. You, asking the exact same question ten years ago. And nobody answers.

The slides, the video, and the text behind my presentation at EuroBSDCon 2024 - 'Why and how we're migrating many of our servers from Linux to the BSDs.'

https://it-notes.dragas.net/2024/10/03/i-solve-problems-eurobsdcon/

#ITNotes #FreeBSD #OpenBSD #NetBSD #RunBSD #IT #SysAdmin #EuroBSDCon #EBC24 #EuroBSDCon24 #EuroBSDCon2024 #NoteHUB

2 petits challenges (faciles, enfin j'espère) pour mon #homelab :

donner la carte graphique à un conteneur pour faire du offload pour #jellyfin.

donner un dongle usb #zigbee à un conteneur pour créer mon serveur #homeassistant (et ne plus dépendre d'un service cloud)

bref je vais bien m'amuser ce Noël ! #sysadmin

Comparing devices at the office this afternoon.

#IT #SysAdmin #Networking #MikroTik #FreeBSD

A few days ago, a client’s data center (well, actually a server room) "vanished" overnight. My monitoring showed that all devices were unreachable. Not even the ISP routers responded, so I assumed a sudden connectivity drop. The strange part? Not even via 4G.

I then suspected a power failure, but the UPS should have sent an alert.

The office was closed for the holidays, but I contacted the IT manager anyway. He was home sick with a serious family issue, but he got moving.

To make a long story short: the company deals in gold and precious metals. They have an underground bunker with two-meter thick walls. They were targeted by a professional gang. They used a tactic seen in similar hits: they identify the main power line, tamper with it at night, and send a massive voltage spike through it.

The goal is to fry all alarm and surveillance systems. Even if battery-backed, they rarely survive a surge like that. Thieves count on the fact that during holidays, owners are away and fried systems can't send alerts. Monitoring companies often have reduced staff and might not notice the "silence" immediately.

That is exactly what happened here. But there is a "but": they didn't account for my Uptime Kuma instance monitoring their MikroTik router, installed just weeks ago. Since it is an external check, it flagged the lack of response from all IPs without needing an internal alert to be triggered from the inside.

The team rushed to the site and found the mess. Luckily, they found an emergency electrical crew to bypass the damage and restore the cameras and alarms. They swapped the fried server UPS with a spare and everything came back up.

The police warned that the chances of the crew returning the next night to "finish" the job were high, though seeing the systems back online would likely make them move on. They also warned that thieves sometimes break in just to destroy servers to wipe any video evidence.

Nothing happened in the end. But in the meantime, I had to sync all their data off-site (thankfully they have dual 1Gbps FTTH), set up an emergency cluster, and ensure everything was redundant.

Never rely only on internal monitoring. Never.

#IT #SysAdmin #HorrorStories #ITHorrorStories #Monitoring

hi

any yggdrasil admins ? im doing research about yggdrasil and im wondering whats the maintenance, resource usage, network hog, and riskyness of hosting a public yggdrasil peer, also, any other tips or knowledge i should delve into before i do anything ?

im not yet convinced because i need to know a lot more, so i thought fedi would be a good place to ask : )

#sysadmin #yggdradil #mashnetwork #linux #privacy #question

: 3

Here is the CPU usage graph for the last 24 hours of the FediMeteo VM. A full 24 hours, during which a huge number of people are connecting, helped by the traction gained from being among the top stories on Hacker News and Lobsters, as well as the many shares across the Fediverse.

RAM usage? Active, around 450 MB. Then there is cache, ARC, and so on. But in practice, zero swap in use after days of uptime.

39 jails running, 39 snac instances, nginx serving the homepage, and HAProxy. HAProxy caching enabled. ZFS snapshots every 15 minutes, backups via zfs send and receive every hour. The same hourly schedule applies to the recalculation of cities, countries, and followers for the homepage.

All of this on a 4 euro per month FreeBSD VM.

If anyone has doubts about the quality and efficiency of FreeBSD, this is the data to show.

#FediMeteo #FreeBSD #RunBSD #IT #SysAdmin

I'm over 45 years old, live near #Tours in France, a dad of 2 kids, one with #FOXP1 syndrome.
I'm thirsty for knowledge, passionate about science and technology in all disciplines.
I try to take photos 🤣.
Aware that infinite growth isn't compatible with a finite world.
First contact with computing in the 80s: Logo on TO7…
I've been working as a #sysadmin #Linux, #Debian for over 20 years 👴.
#introduction

J’ai 45 ans passés, je suis papa de 2 enfants, dont un #FOXP1 en #Touraine.
Je suis assoiffé de connaissances, passionné de sciences et techniques, dans toutes les disciplines.
J’essaie de faire des photos 🤣.
Conscient que la croissance infinie n’est pas compatible avec un monde fini.
Premier contact avec l’informatique dans les années 80 : Logo sur TO7…
Je travaille comme #sysadmin #Linux, #Debian depuis plus de 20 ans 👴.
#introduction #introductionfr

Dang near every jail on my #freebsd server needs either pgsql or mariadb.

I could stop running databases everywhere by building a database jail, eliminating many small points of small failures by implementing a single point of complete failure.

Which is better? All I know is whatever choice wins, I will lose. #sysadmin

I saw this post and it motivated me to do a quick test:
https://phanpy.social/#/hachyderm.io/s/115891592999188880

Stop opening huge files in screen editors.

Screen editors (nvi, vim, etc.) assume you want to scroll,
see context, and move a cursor interactively.
Huge files break those assumptions.

For large files (1GB+):

Inspect: head, tail, grep
Understand structure: awk, sed -n (stream, don’t load)
Surgical changes: ed or sed

Open a screen editor only when you need to rewrite text.

Benchmark (1GB text file):
nvi -> 20.1s (eager line indexing ~25M lines)
vim -> 7.7s (lazy loading, deferred UI cost)
ed -> 4.0s (I/O-bound buffering, no TUI overhead)

Large files don’t need better editors.
They need better workflows.

For huge files, the right solution is not tuning nvi,
but using the right tools:
shell for inspection, ed for known changes,
and nvi when interactive rewriting is actually needed.

PS:
nvi chooses predictability over perceived speed.
The slowdown is not a flaw — it’s the cost of correctness
within a screen-editor model.

#vim #vi #ed #unix #linux #sysadmin