Dziś głównie prezentacja na JUG.
Mam gotowy wstęp: opis ogólny wirtualizacji, kubernetesa.
Muszę przygotować system: klaster k8s i z 2 laptopy workery. Kiedyś wiedziałem jak to zainstalować ale teraz dużo się zmieniło. Mam problem jak na swoim komputerze uruchomić węzeł roboczy.
Muszę też się przygotować na rozmowę rekrutacyjną - wstępną póki co.
Podczas mycia naczyń potłukłem miseczkę. A przy okazji rozciąłem sobie palec na długości około 2cm :/
Mam troszkę wolnego czasu - jeszcze ponad miesiąc na urlopie (zaległy z zeszłego roku i z tego roku). Na co go wykorzystać? Prezentacja na JUG (a jednocześnie nauka). Temat? Bezpieczeństwo kubernetes i zaawansowane elementy zarządzania bezpieczeństwem kuberentesa.
Ale zanim to zrobię to najpierw przygotowanie:
Równolegle rozmowy rekrutacyjne.
A najlepsze że jeszcze nie zacząłem szukać. No i prośbę dostałem o wysłanie CV of "stefana"... czego nie zrobiłem jeszcze. Jakoś mi sie nie pali - ostatnie lata to praca ponad miarę, mało urlopu, łapanie zbyt wielu tematów na raz (co się przekłąda na niższą wydajność), często praca z legacy (z gówna bata nie ukręcisz).
Przyziemnie tematy:
TODO:
Summary
Fyrtur and Kadrilj are generally compatible and you could exchange blinds material or even parts. If you got one - it can be easily upgraded to the more expensive one.
Price paid
I got some kadrilj which were sold by Ikea second hand (returned items) that someone returned in a bulk. It costed 350 PLN each, width 140cm.
My wife recently bought fyrtur (again from returned items) and paid around 200 PLN, same width.
During summer it is too bright so I wanted to use thicker material but I found some (false) information on the internet that those models cannot be simply swapped.
It might be that there are incompatible versions as IKEA often upgrades their products and design without sharing this to the customers (because devices are not meant to be disassembled).
This time my wife bought a device that is faulty. I am not yet sure whether it is a faulty motor or electronics or something else but it is simply broken. The rule in general with IKEA is that you should not return 2nd hand goods (but it probably depends on many factors).
I started with internet search for the device teardowns and did not found many information. Some of them presented how to disassemble major parts.
Then I compared mechanisms of both devices. To my surprise the motor was exactly the same. So was the shape and size.
Next steps for me:
- exchange motors with the electronics and check if this is motor or electronics which is faulty
- disassemble faulty element (which would be challenging for sure) and find why it is faulty
PL (EN bellow)
Problem: Uruchamiając grę XBox 360 (np. Star Wars: The Complete Saga) na nowszej konsoli (np. XBox One lub XBox Series) stan gry nie zapisuje się. Po ponownym uruchomieniu gry wszystko trzeba zaczynać od początku.
Objawy (na przykłądzie gdy Star Wars: The Complete Saga):
https://joemonster.org/art/69163/Wielopak_Weekendowy_Przyszly_wyniki_testow
Syn rolnika poszedł do wojska. Po jakimś czasie napisał do ojca list:
– Tato tu jest wspaniale! Można się wylegiwać do 6 rano!
W dzieciństwie rodzice zmuszali Jasia do klęczenia za karę na grochu, a Jaś jadł ten groch i po cichu się mścił.
I'd like to share what I have learned so far about lexmark (dell) printers. If you have anything interesting to add - please, add a comment :)
I bought the printer in 2020 paying about €100 for it on a sale. This is a decent device for the money: a large monochrome laser printer with a scanner and duplex printing. New (or re-filled by lexmark) toner costs around €50 and should last up to 1200 pages printed.
Printer itself is far from being good: it often prints garbage, paper gets stuck, scanner quality is poor. It comes with drivers that connect to the internet to download and install updates. Potentially could also take control over your computer and printer connected to a network could be used to penetrate your home/office network. So caller "driver" is consuming your resources (because it is always running and connects to the internet) but you should be able to install only the core driver, not the full driver suite.
After 1 year of rare printing I started to see a notification about toner to end soon so I should replace it. This can be ignored (still it is not a nice thing).
After another year I have received error 88.40K saying literally "you have printed too much on this toner - pay a bribe to lexmark to use your printer - printer gets blocked until you pay the bribe".
Companies live Volkswagen noticed that after releasing a great and durable car they are selling only 1 car to an owner for the entire life and not earning any more money. Less durable product forces user to buy more and let them earn more (with production of much more garbage in the process - old product must be utilized or thrown away).
Printer manufacturers started to sell printers that are cheaper than average market price. The secret is in selling very expensive refill (either ink or toner or other materials) - customer overpays (materials are sold for over 1000% of their price, often much over that).
Manufacturers and corporations are not here to make good products or to create good things. Their only goal is to make money (preferably by gaining dominance over the market and abusing monopoly situation to rise prices even more).
The print counting could be made within the printer or the materials. lexmark is inserting a simple small PCB with a chip that is used to verify that:
Every manufacturer is different. Usually printer firmware is based on some unix and lack any documentation available for you.
lexmark however is using Linux inside its devices. This is both a good and a bad news: Linux is much more secure than other less known systems. But it is much more popular and oftern targeted for attacks so it is more likely that you find an existing known published and exploited security hole. Obviously manufacturers force you to update firmware frequently to fix security holes - that is why I have not updated my firmware and it is currently using version mxlsg.071.016. If firmware can be hacked then we could probably just disable printer counters.
The chips can be probably hacked as well. But the printers are likely to remember every chip used and also modify the chip when used (possibly even binding a chip to a printer so it cannot be reused and writing current print counters to the chip).
First of all - if this post helps you, write a comment, let me know that it is useful :)
..."tags":["license","warning","xpack"],"pid":1,"message":"License information could not be obtained from Elasticsearch. [illegal_argument_exception] No endpoint or operation is available at [_xpack]...
followed by an error
Unhandled rejection [illegal_argument_exception] No endpoint or operation is available at [_xpack] :: {"path":"\_xpack","statusCode":400,"response":"{\"error\":{\"root_cause\":[{\"type\":\"illegal_argument_exception\",\"reason\":\"No endpoint or operation is available at [_xpack]\"}],\"type\":\"illegal_argument_exception\",\"reason\":\"No endpoint or operation is available at [_xpack]\"},\"status\":400}"}
services:
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:5.5.2
...
kibana:image: docker.elastic.co/kibana/kibana:5.5.2
....
is not the same thing as
services:elasticsearch:
image: elasticsearch:5.5.2
...
kibana:image: docker.elastic.co/kibana/kibana:5.5.2
....
So just change the image to proper one and write a comment that I helped you :)
