Asus ROG STRIX Z590-E GAMING WIFI - my UEFI BIOS settings

I’ve build new PC - it’s based on Asus ROG STRIX Z590-E GAMING WIFI motherboard. Generally, I’m quite satisfied, but it have one irritating downside - after each UEFI BIOS upgrade, it’s silently resetting some of settings. Let me note, what I want to have there: Ai Tweaker (use my RAM capabilities) AI Overcloack Tuner -> [XMP I] DRAM Frequency -> [DDR4-3600MHz] DRAM CAS# Latency -> [16] DRAM RAS# to CAS# Delay -> [19] DRAM RAS# ACT Time -> [39] DRAM Voltage -> [1....

2021-10-30 · 2 min · timor

Official CentOS 8 Stream Docker image finally available!

Finally, they’re available! Wait a moment.. Actually they’re available for few months, just nobody published information about moving them to quay.io and dropped poor guys using hub.docker.com without any updates! Yes, that how they did! I found new place accidentally, reading some news about CentOS Stream 9 on their blog. There was reference to CentOS 9 Stream dev builds of Docker images and I found “missing” stream and stream8 tags too....

2021-07-25 · 2 min · timor

How to remove geo-localization/EXIF data from photos

I wanted to share publicly some photos, but I performed them with navigation enabled so they contained accurate localization of my house. I wanted to remove EXIF data GPS tags, my phone type and other irrelevant stuff. Tip There’s a way that requires less effort. Check how to automate this process with pre-commit hooks. TL;DR You will need imagemagick installed (use apt/yum/dnf of whatever you have there): Install imagemagick sudo apt install -y imagemagick To remove them just use: Strip EXIF data mogrify -strip image....

2021-03-05 · 1 min · timor

How to run JMX monitoring in Docker image?

It’s sometimes useful to quickly connect to JMX console, to checkout what’s going on in your application, but the whole thing get’s tricky if you’re running your app in a container. I need it from time to time and I keep myself few times searching for set of params below: ~/2021/02/how-to-run-jmx-monitoring-in-docker-image/ java \ ... -Dcom.sun.management.jmxremote \ -Dcom.sun.management.jmxremote.rmi.port=${PORT1} \ -Dcom.sun.management.jmxremote.port=${PORT1} \ -Dcom.sun.management.jmxremote.local.only=false \ -Dcom.sun.management.jmxremote.authenticate=false \ -Dcom.sun.management.jmxremote.ssl=false \ -Djava.rmi.server.hostname=${HOST} The whole magic here is that PORT1 in container is app’s second port....

2021-02-19 · 1 min · timor

CentOS 8 Stream Docker image

We’re all divided with recent decision to focus on CentOS Stream, which essentially means that stable, professional distro will turn into rolling release now. Also CentOS board members don’t gave us more confidence for the future. I don’t want to be totally sceptic, I would like to test it on my own and only then, decide if it’s stable enough. But I work mostly with Docker containers and there are no official Docker images with Stream variant....

2021-02-11 · 2 min · timor

How old are Official Docker images?

TL;DR CentOS base images sucks! They’re old, not updated for months! As a professional DevOps I concern about a lot of things… but security is always close to the top of the list. With Docker build environments and deployments became much more stable, which often is a result of just being stale ;/ I’ve been talking about this for long time but it’s still hard for people to believe it....

2021-01-28 · 2 min · timor
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Bye Bye Wordpress!

I started my blog on custom (written by my) engine, but as I didn’t had enough time to enhance it I switched to Wordpress. I’ve been using Wordpress as an engine of my blog for past 8~9 years. I have small VPS with PHP + Nginx and you can find a lot of configuration examples from my config on this site 😄 There was a time, when I was really satisfied by what it provides....

2020-10-24 · 2 min · timor
[Photo by Paul IJsendoorn from Pexels](https://www.pexels.com/photo/antelope-canyon-33041/)

Moving from Linux to MacOS – first steps

Few years ago I moved from Linux desktop to MacOS for my business, day to day work. There were 2 main reasons for that: Corporations don’t like Linux - they can’t manage it, they can’t support it, so they blocked it with “Security policy”, ISO20001, or other nonsense. Actually they’re partially right but in different place - many business collaboration applications don’t work well on LInux (or they don’t work at all) Skype for Business - there’s open source alternative but to get full support you have to pay for additional codecs (as far as I remember) - it’s not working stable even in paid version Outlook and calendar support - I love Thunderbird and I use it for years, but calendar invitations didn’t work nice (honestly, they didn’t work nice even between different Outlook versions…) Corporate VPN apps - Christ, I always was able to get it working eventually, but… why bother I’m older, maybe lazier, maybe smarter - I don’t like to spend my time resolving problems that don’t give me any value....

2020-01-04 · 8 min · timor

Debuging commands running on memcached

I had stragne statistics on one memcached servers. I had to look what it’s doing there. I found such commands that may be used to sniff, extract and make statistics from running memcached server. Debug GET commands tcpflow -c dst port 11211 | cut -b46- | grep ^get cut command will remove 46 bytes at beginning of every string (src, dst, port). You may need to adjust numeric parameter for cut to leave commands only....

2016-07-13 · 1 min · timor

How to stole ssh session when you’re root

It happen to me all the time that one of developers notifies me about some kind of problem that I can’t confirm from my account. Sometimes it was because of bad ssh keys configuration, other times file permissions, mostly such stuff. It’s sometimes convenient to “enter into someone’s shoes” to see what’s going on there. If you’re root on machine you may do that like this: su developer - Easy one but that’s not enough for all cases....

2016-04-27 · 1 min · timor