#sysadmin — Public Fediverse posts

Túneles para Entornos Locales (Exposure & Port Forwarding)

Redirigir puertos en el router local quedó en el pasado. Herramientas como Cloudflare Tunnels, Ngrok o alternativas Open Source como Rathole/Bore permiten exponer servicios locales sin IP pública ni abrir puertos NAT. La arquitectura de túneles salientes transformó la forma en que desplegamos y probamos entornos.

⚡#OpenSource #Networking #DevOps #SysAdmin #SelfHosted #Cloudflare

Túneles para Entornos Locales (Exposure & Port Forwarding)

Redirigir puertos en el router local quedó en el pasado. Herramientas como Cloudflare Tunnels, Ngrok o alternativas Open Source como Rathole/Bore permiten exponer servicios locales sin IP pública ni abrir puertos NAT. La arquitectura de túneles salientes transformó la forma en que desplegamos y probamos entornos.

⚡#OpenSource #Networking #DevOps #SysAdmin #SelfHosted #Cloudflare

Proxies Inversos y Balanceo de Carga

Un servidor web expuesto directamente a Internet sin un proxy inverso (como Nginx, Caddy o Traefik) es un riesgo innecesario. Los proxies no solo gestionan la terminación TLS y la compresión, sino que abstraen la topología interna de tus servidores y absorben picos de tráfico antes de que colapse el backend. 🌐

#Nginx #SysAdmin #WebServers #Networking #Backend #DevOps

Túneles y Redes Privadas (VPNs vs. WireGuard)

Montar un túnel SSH o levantar una red malla con WireGuard/Tailscale sigue siendo la navaja suiza de la infraestructura. Ocultar tus servicios detrás de túneles encrypted y exponer solo lo estrictamente necesario ahorra toneladas de ataques de fuerza bruta en el puerto 22. En redes, la superficie de ataque mínima siempre gana. 🔒

#Networking #SysAdmin #WireGuard #CyberSecurity #DevOps #SSH

"I love FreeBSD. I admire NixOS. I still choose Debian.

Not because Debian is perfect, but because infrastructure is not built for the person who creates it; it is built for the people who inherit it." -- Ronny Roethof

https://roethof.net/posts/2026/06/i-love-freebsd-i-admire-nixos-i-still-choose-debian/

I stumbled on a blog post by Ronny, about why he uses Debian for the infrastructure projects he maintains. It really resonated with my ideas for DebOps and why I'm still developing it.

When you set up a server or a data center, you won't be its sole user. Somebody else will also interact with the services, years down the line somebody other than you might need to maintain it, upgrade it or move to some other platform. When you build the infrastructure with this in mind, you make other people's lives easier.

#Debian #DebOps #Ansible #IT #Sysadmin

"I love FreeBSD. I admire NixOS. I still choose Debian.

Not because Debian is perfect, but because infrastructure is not built for the person who creates it; it is built for the people who inherit it." -- Ronny Roethof

https://roethof.net/posts/2026/06/i-love-freebsd-i-admire-nixos-i-still-choose-debian/

I stumbled on a blog post by Ronny, about why he uses Debian for the infrastructure projects he maintains. It really resonated with my ideas for DebOps and why I'm still developing it.

When you set up a server or a data center, you won't be its sole user. Somebody else will also interact with the services, years down the line somebody other than you might need to maintain it, upgrade it or move to some other platform. When you build the infrastructure with this in mind, you make other people's lives easier.

#Debian #DebOps #Ansible #IT #Sysadmin

"I love FreeBSD. I admire NixOS. I still choose Debian.

Not because Debian is perfect, but because infrastructure is not built for the person who creates it; it is built for the people who inherit it." -- Ronny Roethof

https://roethof.net/posts/2026/06/i-love-freebsd-i-admire-nixos-i-still-choose-debian/

I stumbled on a blog post by Ronny, about why he uses Debian for the infrastructure projects he maintains. It really resonated with my ideas for DebOps and why I'm still developing it.

When you set up a server or a data center, you won't be its sole user. Somebody else will also interact with the services, years down the line somebody other than you might need to maintain it, upgrade it or move to some other platform. When you build the infrastructure with this in mind, you make other people's lives easier.

#Debian #DebOps #Ansible #IT #Sysadmin

"I love FreeBSD. I admire NixOS. I still choose Debian.

Not because Debian is perfect, but because infrastructure is not built for the person who creates it; it is built for the people who inherit it." -- Ronny Roethof

https://roethof.net/posts/2026/06/i-love-freebsd-i-admire-nixos-i-still-choose-debian/

I stumbled on a blog post by Ronny, about why he uses Debian for the infrastructure projects he maintains. It really resonated with my ideas for DebOps and why I'm still developing it.

When you set up a server or a data center, you won't be its sole user. Somebody else will also interact with the services, years down the line somebody other than you might need to maintain it, upgrade it or move to some other platform. When you build the infrastructure with this in mind, you make other people's lives easier.

#Debian #DebOps #Ansible #IT #Sysadmin

"I love FreeBSD. I admire NixOS. I still choose Debian.

Not because Debian is perfect, but because infrastructure is not built for the person who creates it; it is built for the people who inherit it." -- Ronny Roethof

https://roethof.net/posts/2026/06/i-love-freebsd-i-admire-nixos-i-still-choose-debian/

I stumbled on a blog post by Ronny, about why he uses Debian for the infrastructure projects he maintains. It really resonated with my ideas for DebOps and why I'm still developing it.

When you set up a server or a data center, you won't be its sole user. Somebody else will also interact with the services, years down the line somebody other than you might need to maintain it, upgrade it or move to some other platform. When you build the infrastructure with this in mind, you make other people's lives easier.

#Debian #DebOps #Ansible #IT #Sysadmin

I registered the "cueniform.com" domain a few years ago, intending to make a CUE + Terraform tool. It’s coming up for renewal very soon, but I'm not going to spend any more money on it.

If you'd like to take over this domain then please get in touch with me ASAP! Link to my email address is in my profile. I'll happily pass over the github.com/cueniform organisation at the same time 😀

#CUElang #Terraform #IaC #Sysadmin #DevOps #SRE #CUE #OpenTofu #Infrastructure #InfrastructureAsCode #domain

I registered the "cueniform.com" domain a few years ago, intending to make a CUE + Terraform tool. It’s coming up for renewal very soon, but I'm not going to spend any more money on it.

If you'd like to take over this domain then please get in touch with me ASAP! Link to my email address is in my profile. I'll happily pass over the github.com/cueniform organisation at the same time 😀

#CUElang #Terraform #IaC #Sysadmin #DevOps #SRE #CUE #OpenTofu #Infrastructure #InfrastructureAsCode #domain

I registered the "cueniform.com" domain a few years ago, intending to make a CUE + Terraform tool. It’s coming up for renewal very soon, but I'm not going to spend any more money on it.

If you'd like to take over this domain then please get in touch with me ASAP! Link to my email address is in my profile. I'll happily pass over the github.com/cueniform organisation at the same time 😀

#CUElang #Terraform #IaC #Sysadmin #DevOps #SRE #CUE #OpenTofu #Infrastructure #InfrastructureAsCode #domain

I registered the "cueniform.com" domain a few years ago, intending to make a CUE + Terraform tool. It’s coming up for renewal very soon, but I'm not going to spend any more money on it.

If you'd like to take over this domain then please get in touch with me ASAP! Link to my email address is in my profile. I'll happily pass over the github.com/cueniform organisation at the same time 😀

#CUElang #Terraform #IaC #Sysadmin #DevOps #SRE #CUE #OpenTofu #Infrastructure #InfrastructureAsCode #domain

I registered the "cueniform.com" domain a few years ago, intending to make a CUE + Terraform tool. It’s coming up for renewal very soon, but I'm not going to spend any more money on it.

If you'd like to take over this domain then please get in touch with me ASAP! Link to my email address is in my profile. I'll happily pass over the github.com/cueniform organisation at the same time 😀

#CUElang #Terraform #IaC #Sysadmin #DevOps #SRE #CUE #OpenTofu #Infrastructure #InfrastructureAsCode #domain

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

SmartOS: The illumos Way of Thinking About Servers

A practical look at SmartOS, illumos, zones, LX compatibility and the way this operating system approaches servers. Not a complete guide, just enough to understand why I like it.

https://it-notes.dragas.net/2026/09/28/smartos-the-illumos-way-of-thinking-about-servers/

#SmartOS #illumos #Hosting #Server #IT #SysAdmin #OwnYourData #ITNotes #Tutorial

Incus 7.5 lansat: Adaugă rețele copil OVN și migrare în timp real a instanțelor între noduri

https://linuxforeducation.blogspot.com/2026/09/incus-75-lansat-adauga-retele-copil-ovn.html

#Incus #Virtualization #Containers #LXC #LXD #OVN #DevOps #SysAdmin #OpenSource

Incus 7.5 lansat: Adaugă rețele copil OVN și migrare în timp real a instanțelor între noduri

https://linuxforeducation.blogspot.com/2026/09/incus-75-lansat-adauga-retele-copil-ovn.html

#Incus #Virtualization #Containers #LXC #LXD #OVN #DevOps #SysAdmin #OpenSource

Struggling with Windows 11 scrambling your multi-monitor setup after a recent update or docking station disconnect? 🖥️ Learn how to properly configure and manage your primary and secondary display arrangements to stop apps from opening on the wrong screen.

Read the full guide: https://geekrewind.com/how-to-manage-primary-and-secondary-display-arrangements-in-windows-11/

#Windows11 #TechTips #Displays #LinuxOrWindows #SysAdmin

Linux changes you. 🐧
It starts with curiosity… then somehow becomes a way of thinking, working, and occasionally spending far too much time fixing things that were working perfectly fine. 😅
Some habits follow you home.

#Linux #SysAdmin #ITLife #OpenSource #TechLife #Homelab #LinuxLife

Linux changes you. 🐧
It starts with curiosity… then somehow becomes a way of thinking, working, and occasionally spending far too much time fixing things that were working perfectly fine. 😅
Some habits follow you home.

#Linux #SysAdmin #ITLife #OpenSource #TechLife #Homelab #LinuxLife

Linux changes you. 🐧
It starts with curiosity… then somehow becomes a way of thinking, working, and occasionally spending far too much time fixing things that were working perfectly fine. 😅
Some habits follow you home.

#Linux #SysAdmin #ITLife #OpenSource #TechLife #Homelab #LinuxLife

Linux changes you. 🐧
It starts with curiosity… then somehow becomes a way of thinking, working, and occasionally spending far too much time fixing things that were working perfectly fine. 😅
Some habits follow you home.

#Linux #SysAdmin #ITLife #OpenSource #TechLife #Homelab #LinuxLife

Linux changes you. 🐧
It starts with curiosity… then somehow becomes a way of thinking, working, and occasionally spending far too much time fixing things that were working perfectly fine. 😅
Some habits follow you home.

#Linux #SysAdmin #ITLife #OpenSource #TechLife #Homelab #LinuxLife

FreeBSD has freebsd-version to tell you which release and exact patchlevel you're running.

Is there a similar command for #Debian that tells you when you last did update & upgrade? #sysadmin

(Edit to add: As I thought, there is no way. Tag your ZFS boot environments with a date and get on with your life.)

FreeBSD has freebsd-version to tell you which release and exact patchlevel you're running.

Is there a similar command for #Debian that tells you when you last did update & upgrade? #sysadmin

(Edit to add: As I thought, there is no way. Tag your ZFS boot environments with a date and get on with your life.)

FreeBSD has freebsd-version to tell you which release and exact patchlevel you're running.

Is there a similar command for #Debian that tells you when you last did update & upgrade? #sysadmin

(Edit to add: As I thought, there is no way. Tag your ZFS boot environments with a date and get on with your life.)

FreeBSD has freebsd-version to tell you which release and exact patchlevel you're running.

Is there a similar command for #Debian that tells you when you last did update & upgrade? #sysadmin

(Edit to add: As I thought, there is no way. Tag your ZFS boot environments with a date and get on with your life.)

FreeBSD has freebsd-version to tell you which release and exact patchlevel you're running.

Is there a similar command for #Debian that tells you when you last did update & upgrade? #sysadmin

(Edit to add: As I thought, there is no way. Tag your ZFS boot environments with a date and get on with your life.)

Default www.conf will let a traffic spike OOM-kill your MariaDB. This guide covers PHP-FPM process math and kernel socket tuning so it doesn't. https://www.valtersit.com/guides/hosting/php-fpm_tuning-squeezing_every_drop_of_performance_out_of_your_hosting_node/ #phpfpm #sysadmin #linux

Default www.conf will let a traffic spike OOM-kill your MariaDB. This guide covers PHP-FPM process math and kernel socket tuning so it doesn't. https://www.valtersit.com/guides/hosting/php-fpm_tuning-squeezing_every_drop_of_performance_out_of_your_hosting_node/ #phpfpm #sysadmin #linux

Default www.conf will let a traffic spike OOM-kill your MariaDB. This guide covers PHP-FPM process math and kernel socket tuning so it doesn't. https://www.valtersit.com/guides/hosting/php-fpm_tuning-squeezing_every_drop_of_performance_out_of_your_hosting_node/ #phpfpm #sysadmin #linux

The kernel mounts a root filesystem. I have been saying that for four posts now.

Here is the one with nothing underneath it. Every file in /proc reports zero bytes, du says the whole tree is zero, and yet cat gives you answers.

Nothing is stored. The read itself is the work. Open /proc/meminfo and the kernel counts pages right then and hands you a number that did not exist a moment earlier.

/sys goes further and lets you write. Echo into the right file and you have changed how the scheduler behaves, no config, no reload.

I used the word file for years without noticing how much it was covering for.

#Linux #Kernel #SysAdmin #DevOps #procfs #Blog #Thoughts

The kernel mounts a root filesystem. I have been saying that for four posts now.

Here is the one with nothing underneath it. Every file in /proc reports zero bytes, du says the whole tree is zero, and yet cat gives you answers.

Nothing is stored. The read itself is the work. Open /proc/meminfo and the kernel counts pages right then and hands you a number that did not exist a moment earlier.

/sys goes further and lets you write. Echo into the right file and you have changed how the scheduler behaves, no config, no reload.

I used the word file for years without noticing how much it was covering for.

#Linux #Kernel #SysAdmin #DevOps #procfs #Blog #Thoughts

No need for extra downloads—Windows 11 includes a native OpenSSH client for secure command-line sessions and remote server management. If you can't find it, it's likely just disabled in your optional features. Here is a quick guide on how to open and use it: https://geekrewind.com/how-to-open-the-openssh-client-in-windows-11-settings/ #Windows #OpenSSH #CommandLine #SysAdmin

Nginx Proxy Manager 2.16 adaugă vizualizator de loguri integrat direct în interfața Web

https://linuxforeducation.blogspot.com/2026/09/nginx-proxy-manager-216-adauga.html

#NginxProxyManager #Nginx #Docker #ReverseProxy #SelfHosted #Homelab #OpenSource #SysAdmin

Nginx Proxy Manager 2.16 adaugă vizualizator de loguri integrat direct în interfața Web

https://linuxforeducation.blogspot.com/2026/09/nginx-proxy-manager-216-adauga.html

#NginxProxyManager #Nginx #Docker #ReverseProxy #SelfHosted #Homelab #OpenSource #SysAdmin

Nginx Proxy Manager 2.16 adaugă vizualizator de loguri integrat direct în interfața Web

https://linuxforeducation.blogspot.com/2026/09/nginx-proxy-manager-216-adauga.html

#NginxProxyManager #Nginx #Docker #ReverseProxy #SelfHosted #Homelab #OpenSource #SysAdmin

systemd primește un subsistem nativ de raportare a sistemului prin „systemd-report”

https://linuxforeducation.blogspot.com/2026/09/systemd-primeste-un-subsistem-nativ-de.html

#systemd #systemdreport #Linux #DevOps #SysAdmin #OpenSource #Monitoring #FleetManagement

systemd primește un subsistem nativ de raportare a sistemului prin „systemd-report”

https://linuxforeducation.blogspot.com/2026/09/systemd-primeste-un-subsistem-nativ-de.html

#systemd #systemdreport #Linux #DevOps #SysAdmin #OpenSource #Monitoring #FleetManagement

Neuerdings bin ich Aushilfsadmin auf einem Server, der bei @hetzner steht. Nach einer Weile fiel mir auf, dass dieser Server Sicherheitsupdates erst ca. 6 Stunden später bekommt als meine anderen Linux-Server, die woanders stehen. Jetzt habe ich den Grund gefunden: In /etc/apt/sources.list.d/ liegt eine Datei, die https://mirror.hetzner.com/debian/security enthält.

Dass Rechenzentrumsbetreiber Spiegel der Paket-Repositories von Gnu/Linux-Distributionen betreiben, ist sicher nicht falsch. Aber Sicherheitsupdates müssen schnell verteilt werden. Dafür sollte man ein Repository einbinden, das schnell aktualisiert wird.

Jetzt habe ich diese Stelle durch https://deb.debian.org/debian-security ersetzt und denke, dass ich das Problem damit behoben habe.

#hetzner #aptmirror #Sicherheitsupdates #til #sysadmin #itsecurity

Neuerdings bin ich Aushilfsadmin auf einem Server, der bei @hetzner steht. Nach einer Weile fiel mir auf, dass dieser Server Sicherheitsupdates erst ca. 6 Stunden später bekommt als meine anderen Linux-Server, die woanders stehen. Jetzt habe ich den Grund gefunden: In /etc/apt/sources.list.d/ liegt eine Datei, die https://mirror.hetzner.com/debian/security enthält.

Dass Rechenzentrumsbetreiber Spiegel der Paket-Repositories von Gnu/Linux-Distributionen betreiben, ist sicher nicht falsch. Aber Sicherheitsupdates müssen schnell verteilt werden. Dafür sollte man ein Repository einbinden, das schnell aktualisiert wird.

Jetzt habe ich diese Stelle durch https://deb.debian.org/debian-security ersetzt und denke, dass ich das Problem damit behoben habe.

#hetzner #aptmirror #Sicherheitsupdates #til #sysadmin #itsecurity