Posted by jpluimers on 2025/01/21
Sometimes the XKCD episodes are hard to get, so I wanted a Bookmarklet to navigate to [Wayback/Archive] explain xkcd.
Here is the regular expression to change the domain name part if it matches: [Wayback/Archive] regex101: build, test, and debug regex: VI34VW with this generated sed code:
Posted in *nix, *nix-tools, Bookmarklet, Development, JavaScript/ECMAScript, Power User, Scripting, sed, Software Development, Web Browsers, Web Development | Leave a Comment »
Posted by jpluimers on 2025/01/16
Interesting: [Wayback/Archive] nginxinc/kic-reference-architectures: MARA: Modern Application Reference Architecture
Posted in *nix, *nix-tools, Cloud Development, Development, nginx, Power User, Software Development, Systems Architecture, Web Development | Leave a Comment »
Posted by jpluimers on 2025/01/10
[Wayback/A] nixCraft on Twitter: “Here is how to check if you are affected by a known vulnerability in your hardware (CPU) when using Linux including mitigation status: grep -r . /sys/devices/system/cpu/vulnerabilities/“
Posted in *nix, *nix-tools, grep, Linux, Power User | Leave a Comment »
Posted by jpluimers on 2024/12/27
A while ago there was an interesting point of using tiered md to both obtain low read latency and write safety on the Google Cloud Platform in [Wayback/Archive] How Discord Supercharges Network Disks for Extreme Low Latency
It is an interesting approach to universally tune performance within the sketched boundaries, but raised some questions as their aim was improving ScyllaDB performance and Unix-like platforms on Google Cloud Platform can supports ZFS.
In this case Discord wanted to improve their ScyllaDB that was already read/written from GCP Persistent Storage and used tiered md to improve that.
Posted in *nix, *nix-tools, Cloud, GCP Google Cloud Platform, Google, Hardware, Infrastructure, NVMe, Power User, RAID, SSD | Leave a Comment »
Posted by jpluimers on 2024/12/13
This is from years ago, but I forgot to schedule it, so here it is:
Problem on an E20 (enlightenment using lightdm) image:
openSUSE-Leap-15.2-ARM-E20-raspberrypi3.aarch64-2020.07.08-Build1.34.raw.xz [Wayback] .packages [Wayback] .raw.xz.sha256 [Wayback] [Wayback] .raw.xz.sha256.ascopenSUSE-Tumbleweed-ARM-E20-raspberrypi3.aarch64-2020.08.15-Snapshot20200904.raw.xz [Wayback] .packages [Wayback] .raw.xz.sha256 [Wayback] [Wayback] .raw.xz.sha256.asc
Parts of the chat transcript:
Posted in *nix, *nix-tools, LEAP, Linux, openSuSE, Power User, SuSE Linux, Tumbleweed | Leave a Comment »
Posted by jpluimers on 2024/12/10
Sometimes you need to see a tiny bit of code to have this “aha moment”. One for me was a few years back:
[Wayback/Archive] Florian Haas on Twitter: “alias kubectl="TZ=Etc/UTC kubectl" You’re welcome.”
Posted in *nix, *nix-tools, Cloud, Containers, Docker, Infrastructure, Kubernetes (k8n), Power User | Leave a Comment »
Posted by jpluimers on 2024/12/06
Reminder to show how well my experimentation with [Wayback/Archive] Better Uptime went and how they compare to [Wayback/Archive] UptimeRobot.
For now I am at this plan in [Wayback/Archive] Pricing | Better Uptime:
Free:
- e-mail alerts
- 3-minute checks
- 10 monitors
This suffices to keep an eye on the modest IT infrastructure at both our home and the one from my mentally retarded brother.
Note that other prices on that pages are per month. Despite the default selection being “annual plan” the very light grey and thin “/mo” on a black ground indicates they are still per month, but you get 20% discount with the annual plans).
Posted in *nix, Amazon SES, Amazon.com/.de/.fr/.uk/..., BetterUptime, Cloud, Infrastructure, Monitoring, Power User, Uptimerobot | Leave a Comment »
Posted by jpluimers on 2024/12/02
Sometimes the best information is outside vendor forums. I think it is the case for this Reddit thread: [Wayback/Archive] Regarding updating Tumbleweed; what is the best way to do it? Appper, zypper dup, zypper up. Which one am i supposed to use? Should i be worried about the vendor changes? And why do i get a message when using ‘zypper up’ saying “The following 35 package updates will NOT be installed”? : openSUSE
Note that specific to openSuSE Tumbleweed you should prefer zypper distr-upgrade over zypper update as per [Wayback/Archive] TUMBLEWEED zypper dup default behavior changed: what is the difference to zypper up?
Be aware this thread is about Tumbleweed, the method to update is byusing dup since it’s a new snapshot. At this point it’s your choice toupdate or not depending on your requirements. If your running out ofkernel modules supplied by third parties, then your tied to theirschedule…. Using zypper up will in the long term create more issuesas well as not supported.
This is especially true as --no-allow-vendor-change has been the default for zypper dist-upgrade for almost a decade now: [Wayback/Archive] PSA: Tumbleweed: –no-allow-vendor-change now default zypper dup behaviour : openSUSE
Posted in *nix, *nix-tools, Linux, openSuSE, Power User, SuSE Linux, Tumbleweed | Leave a Comment »
Posted by jpluimers on 2024/11/18
Never too old to learn:
works with ssh as well but is much simpler: press as many
~as level of nest before.(by default,~is the escape character while.is to terminate ssh).
Notice that because hitting
~~causessshto send the~instead of intercepting it, you can address N nestedsshconnections by hitting~N times. (This only applies to~s that directly follow an Enter.) That is to say thatEnter~~~~~.terminates ansshsession 5 layers deep and keeps the other 4 intact.
So this is basically an extension of my 2017 blog post OpenSSH Escape Sequences (aka Kill Dead SSH Sessions) – The Lone Sysadmin (:
–jeroen
Posted in *nix, *nix-tools, Power User, ssh/sshd | Leave a Comment »
Posted by jpluimers on 2024/10/14
I will likely need this one day: [Wayback/Archive] GitHub – oetiker/znapzend: zfs backup with remote capabilities and mbuffer integration.
Web-site: [Wayback/Archive] ZnapZend – open source ZFS backup with mbuffer and ssh support
--jeroen
Posted in *nix, *nix-tools, Power User, ZFS | Leave a Comment »
The Wiert Corner - irregular stream of stuff 