docs: create infrastructure

infrastructure.md

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+---
+title: Infrastructure
+description: The hardware and software powering it all
+published: true
+date: 2019-05-03T22:54:18.630Z
+tags: 
+---
+
+# Basic overview
+
+- Entrypoint to network is a Linksys WRT1200AC
+
+- Main HP DL380 G6 server
+
+- File server is a Custom Intel SC5000 BASE
+
+# Router
+
+Self assigned WAN IP address, easily probed via our true domain `fosc.etsit.upct.es`
+
+# Main Server
+
+Its hostname is just `fosc`
+
+Runs NixOS with some nice configs and acts as a docker server.
+These configs are not intended to be touched by mortals, but can be seen by everyone so they can help in home setups.
+
+Extensive docker-compose setup available at `/var/docker/`. 
+TL;DR: Go there if you have been given access to deploy a stack.
+
+## RAID setup
+NixOS boots from an independent f2fs 250GB SSD. Real storage is available in a ZFS "RAID10" composed of the 4 mechanical disks. Due to RAID card annoyances, replacing a disk requires a reboot (and probably more intervention)
+  
+## Traefik
+This server is the services entrypoint for the network and hogs port 80 and 443 (among others) and will fetch different webpages based on domain.
+
+## Mounting
+Files are retrieved from the file server at `/mnt/gordo`
+  
+
+# File Server
+
+As you would have expected, `gordo`
+
+Also runs NixOS, acts as NFS server and torrent seedbox. Has a minor traefik+docker setup as well, doing not much.
+
+It is basically out of ram 100% of the time, as it is used for ZFS caching.
+
+## RAID setup
+Three 1TB SATA disks in raidz (RAID5). The first disk seen by the BIOS contains the GRUB bootloader and a small boot partition aside from one of the three ZFS partitions.
+
+Only one disk can fail at the same time. Be careful out there.
+
+