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Volker Schukai14h ago • 5 min read
Moving a password to another device without syncing your vault
An administrator's guide to one-off secret transfers: what WithinCells does, how its QR handoff work...
#security#sysadmin#android#privacy
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Sharang Parnerkar3d ago • 5 min read
One upgrade, three outages: glibc, cgroups, and a placeholder bug
Upgrading a two-node cluster to the release that shipped my own fixes broke it three separate ways i...
#devops#linux#sysadmin#docker
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Kernel notes (sunshout)6d ago • 2 min read
isolcpus= takes CPUs off the scheduler. Hardware IRQs still land there.
The blunt tool is still in a lot of GRUB files: GRUB_CMDLINE_LINUX_DEFAULT="isolcpus=0,1" ....
#linux#kernel#networking#sysadmin
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The Homelab Postmortem6d ago • 9 min read
tar backed up your Pi's WiFi config and exited 0. The archive holds one empty directory.
TL;DR: On a stock Trixie Pi OS image, the WiFi credentials for the connection this Pi actually uses....
#raspberrypi#linux#networking#sysadmin
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Sreekanth Kuruba5d ago • 7 min read
Docker in Production: What Changes When Containers Meet Reality?
post 8: You run a container. It starts successfully. The application works. So… is it...
#docker#devops#sysadmin#containers
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Serguey Shinder3d ago • 1 min read
El parche que pospones es la puerta que dejas abierta
El parche que pospones es la puerta que dejas abierta. Y a diferencia de una puerta real, esta la...
#security#cybersecurity#espanol#sysadmin
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Serguey Shinder3d ago • 1 min read
El caos que no documentas lo repites
El caos que no documentas, lo repites. Lo aprendí resolviendo, por tercera vez, el mismo incidente.....
#devops#sysadmin#espanol#sre
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Serguey Shinder3d ago • 1 min read
Die meisten Sicherheitsvorfälle sind langweilig
Wenn Menschen sich einen Einbruch vorstellen, denken sie an etwas Filmreifes. Eine Gestalt mit...
#security#cybersecurity#deutsch#sysadmin
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Serguey Shinder3d ago • 1 min read
Спокій під час збою — це результат підготовки
Спокій під час збою — це не риса характеру. Це результат підготовки. Люди, які здаються незворушними...
#devops#sysadmin#ukrainian#sre
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Serguey Shinder3d ago • 2 min read
Automate the Task You've Done Three Times
There's a simple rule I use to decide what to automate, and it's saved me more time than any tool...
#devops#automation#productivity#sysadmin
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Ajay Walia21h ago • 2 min read
An AI Academy for the People Who Keep the Lights On
If you work in infrastructure support at a GSI — TCS, HCL, Infosys, Wipro, Cognizant — you have...
#ai#career#sysadmin#learning
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Serguey Shinder3d ago • 1 min read
Не збирай дані, які не готовий захищати
Є спокуса збирати все. Диск дешевий, дані здаються цінними, а раптом колись знадобиться. Тож ми...
#sysadmin#devops#ukrainian#privacy
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Serguey Shinder3d ago • 1 min read
Der beste Tag im Betrieb ist ein langweiliger
Der beste Tag im Betrieb ist ein langweiliger. Nichts piept, nichts fällt aus, die Systeme tun...
#devops#sysadmin#deutsch#sre
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Serguey Shinder21h ago • 2 min read
The Riskiest Change Is the One Everyone Calls Trivial
The worst outage of my career was caused by a one-line change that three people, including me,...
#sergueyshinder#itops#sysadmin#sre
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Serguey Shinder21h ago • 2 min read
The Patch You Postpone Is the Exploit You Invite
Almost every serious incident I have helped clean up had the same quiet ingredient: a known...
#sergueyshinder#security#sysadmin#infosec
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Serguey Shinder3d ago • 2 min read
Una migración sin vuelta atrás es una apuesta
Una migración sin vuelta atrás no es un plan; es una apuesta. Y en producción, apostar es un lujo qu...
#sysadmin#devops#espanol#database
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Serguey Shinder1d ago • 2 min read
Least Privilege Is a Habit, Not a Project
Most breaches I have seen up close did not start with some genius exploit. They started with an...
#sergueyshinder#security#sysadmin#infosec
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Serguey Shinder3d ago • 1 min read
Ein Backup existiert erst, wenn du es zurückgespielt hast
Alle haben Backups. Fast niemand testet sie. Und ein ungetestetes Backup ist kein Backup, sondern...
#sysadmin#devops#deutsch#database
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Serguey Shinder3d ago • 2 min read
On ne gère pas ce qu'on ne mesure pas
On ne gère pas ce qu'on ne mesure pas. C'est l'une des premières leçons de l'exploitation, et...
#devops#sysadmin#francais#sre
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Serguey Shinder3d ago • 2 min read
The Incident You Prevent Is the One Nobody Thanks You For
The best day in operations is a boring one. Nothing paged. Nothing fell over. The systems just...
#devops#sre#sysadmin#career
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Serguey Shinder3d ago • 2 min read
Tes journaux sont une scène de crime
Le jour où quelque chose tourne mal en production, tes journaux sont une scène de crime. Et comme su...
#sysadmin#devops#francais#observability
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Serguey Shinder3d ago • 2 min read
Most Breaches Aren't Clever. They're Boring.
When people picture a breach, they picture something cinematic. A hooded figure, custom malware, a.....
#security#cybersecurity#devops#sysadmin
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Serguey Shinder3d ago • 2 min read
Your Backup Doesn't Exist Until You've Restored It
Everyone has backups. Almost nobody tests them. And an untested backup is not a backup — it's a hope...
#sysadmin#devops#database#reliability
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Serguey Shinder3d ago • 1 min read
Схема — это обещание; меняй её осторожно
Схема данных — это обещание. Каждый, кто читает или пишет в твою базу, полагается на то, что данные....
#sysadmin#devops#russian#database
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