Ricardo Katz
@rkatz.xyz
Kubernetes, Lego, music and aviation passionate. Infra person that went to dev side. Engineering @ Red Hat. Tweets in pt_BR and en_BR. Opinions are my own and do not reflect the views of my employer.
Considering running atuin.sh but self hosted. Is someone else using it? Experiences so far?
Atuin - Shell History & Executable Runbooks
atuin.sh
January 21, 2026 at 10:55 AM
Considering running atuin.sh but self hosted. Is someone else using it? Experiences so far?
Vocês já pararam pra pensar que o ben-te-vi é praticamente um pokemon, já que ele fica voando por aí e falando o próprio nome?
January 18, 2026 at 1:27 PM
Vocês já pararam pra pensar que o ben-te-vi é praticamente um pokemon, já que ele fica voando por aí e falando o próprio nome?
I have replaced Gnome for Cosmic on my f43 and well, so far the experience is amazing. Tilling without additional plugins, the built in terminal is performant and have the bare minimum I need (split, tabs and search) and experience is smooth
January 11, 2026 at 5:42 PM
I have replaced Gnome for Cosmic on my f43 and well, so far the experience is amazing. Tilling without additional plugins, the built in terminal is performant and have the bare minimum I need (split, tabs and search) and experience is smooth
My Istio development workflow: dev.to/rkatz/istio-...
Istio Pilot - Debugging and Development workflow
As I've been touching more on Istio Pilot codebase recently, I've found very difficult to debug it...
dev.to
January 6, 2026 at 1:06 PM
My Istio development workflow: dev.to/rkatz/istio-...
Reposted by Ricardo Katz
Do you have an idle cluster? Can you spare a couple core-years?
Help me bruteforce some test vectors for RSA key generation edge cases!
Here are the instructions, it's just a matter of running a single self-contained cross-compilable Go binary that will report the results autonomously.
Help me bruteforce some test vectors for RSA key generation edge cases!
Here are the instructions, it's just a matter of running a single self-contained cross-compilable Go binary that will report the results autonomously.
RSA test vector crowdsourcing instructions
gist.github.com
January 4, 2026 at 3:48 PM
Do you have an idle cluster? Can you spare a couple core-years?
Help me bruteforce some test vectors for RSA key generation edge cases!
Here are the instructions, it's just a matter of running a single self-contained cross-compilable Go binary that will report the results autonomously.
Help me bruteforce some test vectors for RSA key generation edge cases!
Here are the instructions, it's just a matter of running a single self-contained cross-compilable Go binary that will report the results autonomously.
BLACK SABBATH - "War Pigs" from 'The End' (Live Video)
YouTube video by Black Sabbath
youtu.be
January 3, 2026 at 9:08 PM
2026 in review: when a surprising moment happen (layoff) but then you are hired to do what you enjoy as your day job (instead of spending weekends on it). And I am genuinely happy with it.
Sometimes the storm really comes before the calm waters :)
Sometimes the storm really comes before the calm waters :)
December 31, 2025 at 4:44 PM
2026 in review: when a surprising moment happen (layoff) but then you are hired to do what you enjoy as your day job (instead of spending weekends on it). And I am genuinely happy with it.
Sometimes the storm really comes before the calm waters :)
Sometimes the storm really comes before the calm waters :)
Meu mês do Linkedin resumido em 3 linhas:
* especialistas em ingress-nginx
* migro seu Minio e trago a pessoa amada em 7 dias
* o que podemos aprender com o marketing da Havaianas e o excesso de paranóia na interpretação de propagandas
É isso, que venha 2026 pq esse ano já deu….
* especialistas em ingress-nginx
* migro seu Minio e trago a pessoa amada em 7 dias
* o que podemos aprender com o marketing da Havaianas e o excesso de paranóia na interpretação de propagandas
É isso, que venha 2026 pq esse ano já deu….
December 23, 2025 at 3:14 PM
Meu mês do Linkedin resumido em 3 linhas:
* especialistas em ingress-nginx
* migro seu Minio e trago a pessoa amada em 7 dias
* o que podemos aprender com o marketing da Havaianas e o excesso de paranóia na interpretação de propagandas
É isso, que venha 2026 pq esse ano já deu….
* especialistas em ingress-nginx
* migro seu Minio e trago a pessoa amada em 7 dias
* o que podemos aprender com o marketing da Havaianas e o excesso de paranóia na interpretação de propagandas
É isso, que venha 2026 pq esse ano já deu….
Besides my hate for cold weather, I reeeeeally wanna go to Antartica. Bookings are available just for Nov/2027. Should I?
December 20, 2025 at 12:48 PM
Besides my hate for cold weather, I reeeeeally wanna go to Antartica. Bookings are available just for Nov/2027. Should I?
www.cve.org/CVERecord?id...
This one I have identified was fast to be fixed and disclosed by F5 :) thanks for the fast response!
This one I have identified was fast to be fixed and disclosed by F5 :) thanks for the fast response!
www.cve.org
December 17, 2025 at 5:15 PM
www.cve.org/CVERecord?id...
This one I have identified was fast to be fixed and disclosed by F5 :) thanks for the fast response!
This one I have identified was fast to be fixed and disclosed by F5 :) thanks for the fast response!
Here is something very stupid I am doing, because you probably want to know what is already supported from Ingress to Gateway API: www.rkatz.xyz/ingress-ngin...
Have fun
Have fun
Ingress to Gateway Annotations
www.rkatz.xyz
December 12, 2025 at 10:10 PM
Here is something very stupid I am doing, because you probably want to know what is already supported from Ingress to Gateway API: www.rkatz.xyz/ingress-ngin...
Have fun
Have fun
Kubecon EU 2026 schedule is out, and I got a very fun talk accepted: sched.co/2CVyZ
Expect me doing a Gateway API implementation using kgateway as control plane, and dataplane being an Apache HTTP Server running on FreeBSD and using BGP to know how to route to the Pods (maybe not that much!) :x
Expect me doing a Gateway API implementation using kgateway as control plane, and dataplane being an Apache HTTP Server running on FreeBSD and using BGP to know how to route to the Pods (maybe not that much!) :x
KubeCon + CloudNativeCon Europe 2026: Not Yet Another Envoy Implementation - E...
View more about this event at KubeCon + CloudNativeCon Europe 2026
sched.co
December 11, 2025 at 12:17 AM
Kubecon EU 2026 schedule is out, and I got a very fun talk accepted: sched.co/2CVyZ
Expect me doing a Gateway API implementation using kgateway as control plane, and dataplane being an Apache HTTP Server running on FreeBSD and using BGP to know how to route to the Pods (maybe not that much!) :x
Expect me doing a Gateway API implementation using kgateway as control plane, and dataplane being an Apache HTTP Server running on FreeBSD and using BGP to know how to route to the Pods (maybe not that much!) :x
Protip: never say “oh apparently they decided to use a proxy written in Rust due to performance improvements” on a room filled with Kernel contributors.
December 5, 2025 at 2:06 AM
Protip: never say “oh apparently they decided to use a proxy written in Rust due to performance improvements” on a room filled with Kernel contributors.
Reposted by Ricardo Katz
Galera,
Procuro um contato no Grupo Storm pra uma vaga perfeita pro meu perfil. Alguem? RT-love
@gomex.me @badtux.linuxtips.io @waltenne.bsky.social @bernardolopes.com @biosbug.bsky.social @rafaelbonilha.bsky.social @joseli.to @rkatz.xyz @cpanato.dev @giggio.net@r11s.com.br @pedrosaxu.bsky.social
Procuro um contato no Grupo Storm pra uma vaga perfeita pro meu perfil. Alguem? RT-love
@gomex.me @badtux.linuxtips.io @waltenne.bsky.social @bernardolopes.com @biosbug.bsky.social @rafaelbonilha.bsky.social @joseli.to @rkatz.xyz @cpanato.dev @giggio.net@r11s.com.br @pedrosaxu.bsky.social
December 4, 2025 at 12:47 PM
Galera,
Procuro um contato no Grupo Storm pra uma vaga perfeita pro meu perfil. Alguem? RT-love
@gomex.me @badtux.linuxtips.io @waltenne.bsky.social @bernardolopes.com @biosbug.bsky.social @rafaelbonilha.bsky.social @joseli.to @rkatz.xyz @cpanato.dev @giggio.net@r11s.com.br @pedrosaxu.bsky.social
Procuro um contato no Grupo Storm pra uma vaga perfeita pro meu perfil. Alguem? RT-love
@gomex.me @badtux.linuxtips.io @waltenne.bsky.social @bernardolopes.com @biosbug.bsky.social @rafaelbonilha.bsky.social @joseli.to @rkatz.xyz @cpanato.dev @giggio.net@r11s.com.br @pedrosaxu.bsky.social
Or “wait till after carnival” for those who celebrate
December 4, 2025 at 2:28 AM
Or “wait till after carnival” for those who celebrate
Nothing like hacking Kubernetes code to chill on a sunny and hot Sunday
November 30, 2025 at 9:49 PM
Nothing like hacking Kubernetes code to chill on a sunny and hot Sunday
Today I was accused of being very patient, and clearly the person who said that doesn’t know what he’s talking about :P
November 28, 2025 at 5:25 PM
Today I was accused of being very patient, and clearly the person who said that doesn’t know what he’s talking about :P
How old were you when you discovered that gmail ignores “.”, so sending an email to user.last@gmail.com == userlast@gmail.com == userla.st@gmail.com
November 27, 2025 at 4:08 PM
How old were you when you discovered that gmail ignores “.”, so sending an email to user.last@gmail.com == userlast@gmail.com == userla.st@gmail.com