System Administration
Week 10, Backups: Core Concepts
In this video, we begin our discussion of backups by covering some core concepts and terminology, looking at full vs. incremental vs. differential backups and the difference between long-term storage and disaster recovery of files due to more localized data loss.
Still anticipating a major spring or autumn event, "You Have Installed OpenBSD. Now For The Daily Tasks." https://nxdomain.no/~peter/openbsd_installed_now_for_the_daily_tasks.html now also points the user to rcctl for services housekeeping.
Woke up, coffee tasted like regret. Logged into AWS, CloudWatch alarm screaming louder than my cat at 3 AM. Turns out, someone thought turning off 7 instances was a good idea. Idiots. Current status: surrounded by red dashboards, fueled by stale biscuits, and questioning all my life choices. At least the backups are running… probably...lol. Send help and more coffee, please.
Sorry boss, can't work, IT system overloaded
No spring or autumn would be complete without a new, exciting #OpenBSD release!
You can start preparing right away for the upcoming OpenBSD 7.7 release https://www.openbsd.org/77.html by reading "You Have Installed OpenBSD. Now For The Daily Tasks." https://nxdomain.no/~peter/openbsd_installed_now_for_the_daily_tasks.html
#openbsd #bsd #unixlike #newrelease #devops #development #sysadmin #networking #security #sanity #qualitysoftware
(and yes, as hinted in the article, that first link will only start working in a little while, so be patient, please)
well, 6 month contract extension turned in to only 1 month. Time to look for another #linux #sysadmin role and get #fedihired?
New sysctl(8) -f option supports reading entire settings file in one go https://www.undeadly.org/cgi?action=article;sid=20250408120131
#openbsd #sysctl #sysadmin #devops #development #security #freesoftware #libresoftware
Network monitoring is the process of capturing and analyzing traffic across OSI layers 2 to 4, offering visibility into how data moves through the network and how different protocols interact during communication
Here are Linux-based network monitoring tools, categorized by the OSI layer they operate on 
#sysadmin
Find high-res pdf books with all my #Linux related infographics at https://study-notes.org
For fucks sake! Stop using #Microsoft e-mail addresses outlook.com, hotmail.com, live.com and their variations!
Microsoft aggressively blocks e-mails from independent small and mid server providers for no reason!
Despite: You look unprofessional as hell with whatever@outlook.com
Tired of all the insanity out there?
You can look forward to a new #openbsd release soon.
Prepare by reading "You Have Installed OpenBSD. Now For The Daily Tasks." https://nxdomain.no/~peter/openbsd_installed_now_for_the_daily_tasks.html
System Administration
Week 9, Writing System Tools
This week we're going on a side-quest to discover solid #programming best practices that apply across simple scripting, prototyping, growing your tools, and owning a software product. We don't have videos for this topic, but the slides below include a lot of hopefully useful links ranging from coding style to ticket management and commit messages.
https://stevens.netmeister.org/615/09-writing-system-tools.pdf
BSDCan 2025 is in Ottawa, with tutorials June 11-12, 2025, talks June 13-14, 2025
Registration is open - https://www.bsdcan.org/2025/registration.html
Also see https://blog.bsdcan.org/2025/03/18/bsdcan-2025-talks-tutorials-and-registration/ for descriptions and tips
Now updated in anticipation of the upcoming OpenBSD 7.7 release: "You Have Installed OpenBSD. Now For The Daily Tasks." https://nxdomain.no/~peter/openbsd_installed_now_for_the_daily_tasks.html #openbsd #bsd #unixlike #newrelease #devops #development #sysadmin #networking #security
Registration for BSDCan 2025 is open!
Tutorials Jun 11-12
Talks & BOFs Jun 13-14,
See https://blog.bsdcan.org/blog/ and register at https://www.bsdcan.org/2025/registration.html
At EuroBSDCon 2025, we're eager to read your paper, BOF or tutorial submission!
Please go to https://2025.eurobsdcon.org/ for info, submit at https://events.eurobsdcon.org/2025/cfp
See you in Zagreb in September!
Hey fellow sysadmin cosplay nerds, does anyone here use VyOS? I use VyOS as the main router for my home network and I just found out that a job for uploading backups to an off-site location is strangling my upstream bandwidth.
I want to create a QOS / traffic shaping policy to treat this as bulk traffic - take up as much bandwidth as available but give priority to all other traffic.
Is there a simple way to do this? I don't want to allocate a fixed bandwidth for it.
Last night I dreamed I was buying new servers, European ones, based on ARM architecture (or maybe RISC-V, I don’t remember – I just know it wasn’t the 'classic' amd64).
Just a dream, or is there actually something interesting already on the market?
