placki ziemniaczane
ja to robie z 3kg ziemniakow proporcje: przygotowanie:
unimportant
kiszone buraki
z ~3kg burakow wychodzi ~5 sloikow 1L. sloiki schowac do ciemnego miejsca z teperatura pokojowa. ja trzymam je w duzym garku, w szafie – moze z nich cieknac. po 1-2 tygodniach otworzyc, zebrac ewentualna plesn z gory i wlozyc do lodowki. sa gotowe do jedzenia / picia.
forcing rewrite of one of mdadm raid1 disks
on not so important server i got an alert about SMART errors and failing weekly surface test [ smartctl -d sat -t long /dev/sdb ]. i wanted to force the drive to re-allocate bad sectors; i could not read it anymore – cat /dev/sdb > /dev/null would fail with read errors. i remember reading somewhere ... Read More
rsync to/from synology failing
i was asked to copy some data from a Linux server to Synology NAS. SSH keys have been exchanged, i was able to ssh root@ipOfSynology. but trying to ssh something to it was failing: i’ve googled and i’ve found https://community.synology.com/enu/forum/1/post/121078 – i had to go to Synology’s admin page > Control Panel > Users & ... Read More
using transparent compression in btrfs
to compress any newly added file/directory – mount the file system with option compression=algorithm:compressionLevel e.g.: to compress individual file or folder, without compressing everything else stored on given file system: to check compression ratio: to check compression property for an existing folder: for more details – see https://btrfs.readthedocs.io/en/latest/Compression.html
ideas: TLS-aware firewall for outgoing traffic
i’d love to have linux-based strict firewall for outgoing traffic. one that can allow for traffic to specific domain name [behind CDN], rather than fixed IP addresses. i did not find yet something that would tick all my check boxes, nevertheless – few links to related projects and discussions:
matching sshd’s log ‘Accepted publickey for’ to specific public key
journalctl -f or tail -f /var/log/auth.log shows on successful login something like this: that GDF…….somehash………………k is a fingerprint of publish ssh key and matches one of the entries in authorized_keys. which one? will show you fingerprints for all of the existing authorized keys, now you can match it with the log trace of successful login.
logging from ipad/linux or windows to windows PC which has local account associated with hotmail.com or outlook.com
task: get remote desktop to work from ipad or linux. connection is done to windows 10/11 pro pc which has local account associated with hotmail or outlook and uses pin to log in. i’ve found a solution at https://superuser.com/questions/1618530/rdp-to-home-pc-with-windows-hello-pin and had to: then use rdp client and log in with login: MicrosoftAccount\something@hotmail.com, as password – ... Read More
Oracle cloud
Oracle is has quite generous Always Free Tier, so i’ve registered and set up a VM there. so i ended up on VM.Standard.E2.1.Micro with AMD CPU underneath i could not get ARM instance – looks like ‘Out of capacity for shape VM.Standard.A1.Flex in availability domain AD-1. Create the instance in a different availability domain or ... Read More
putting manticore’s query.log, mysql’s slow query log into single lines
sometimes i’m dealing with large manticore logs where queries include line breaks. this helps me to get them into form that grep can work with: for mysql’s slow query log:
audiobooki i sluchowiska ktore lubi moja corka
corka od wieku ~5 lat korzysta z glosnika odtwarzajacego mp3’jki – byl to strzal w dziesiatke. mam nadzieje ze jeszcze dlugo wytrzyma bez ‘migajacego ekranu’. co jej przypadlo do gustu w wieku 5-7 lat? biblioteki publiczne ftw – znalazlem tam mase ksiazek nie obarczonych DRM’em, na youtube tez mozna duzo znalezc, przydaje sie yt-dlp.
ansible playbook increasing log retention period
i needed to adjust local log retention period on bunch of servers. rules: with some help from chatgpt and grog3 i’ve cobbled this one:
splitting ebook in one mp3 into multiple files
my daughter likes to listen to audiobooks; some of them come from youtube, some are multi-hour long. it’s easier to listen, re-listen if book is chopped into shorter chapter-alike files. how do i do it? yt-dlp is a swiss army knife for downloading audio/video from multiple hosting services mp3splt allows to split mp3 files in ... Read More
beko dishwasher showing e01 code
our dishwasher stopped working, displayed E01 code and whenever closed was running drain pump all the time. i’ve called their support and learned it’s a known anti-flood feature and is caused by water that leaked gradually out of dishwasher and stayed in its base. solution? makes you wonder why does the water leak out of ... Read More
Using mitmproxy to allow closed-source application to communicate with licensing server with expired TLS cert
we’re using a 3rd party library that shall remain nameless. vendor provides this library to us in form of few .so files, few headers and sample code. we have a small custom c++ wrapper for it. whenever library is initialized – it makes a call to licensing server and does some challenge/response verification. on one ... Read More
Sound-generating online apps
list of few online apps that my daughter likes: longer lists of tools:
random things that inspire me
SQLite’s code of ethics: https://www.sqlite.org/codeofethics.html altamira’s ten investment commandments
charging Amazfit Band 5
i’m a happy user of Amazfit Band 5. it’s dirt cheap, paired with gadgetbridge – works fine without sharing any data with cloud-hosted big brother, all in all – it helps to keep me moving around each day. i had few occasions when i needed to charge it [ every ~2 weeks ] and did ... Read More
cheescake recipe
ingredients: procedure:
Fastly returning “Requested host does not match any Subject Alternative Names (SANs) on TLS certificate”, HTTP/421
due to $reasons we have an nginx-proxy that is a reverse proxy forwarding to Fastly CDN which, in turn, forwards back to our infrastructure. starting from the 2024-02-27 this stopped working, for some HTTP queries. most notably those using OPTION verb. response that nginx was getting from Fastly had HTTP/421 status code and payload: colleague ... Read More