[docs] WIP add host creation using disko

doc/src/SUMMARY.md

@@ -12,6 +12,7 @@
             - [musik](./projekte/musik.md)
         - [TODO](./todo.md)
     - [How-to]()
+        - [Create New Host](./anleitung/create.md)
         - [Sops](./anleitung/sops.md)            
         - [Updates](./anleitung/updates.md)
         - [Rollbacks](./anleitung/rollback.md)

doc/src/anleitung/create.md

@@ -0,0 +1,47 @@
+# Create host with disko-install
+How to use disko-install is described here: https://github.com/nix-community/disko/blob/master/docs/disko-install.md
+---
+Here are the exact steps to get bakunin running:  
+First create machines/hostname/configuration.nix  
+Add hosts nixosConfiguration in machines/configurations.nix  
+Boot nixos installer on the Machine.  
+``` bash
+# establish network connection
+wpa_passphrase "network" "password" > wpa.conf
+wpa_supplicant -B -i wlp3s0 -c wpa.conf
+ping 8.8.8.8
+# if that works continue
+
+# generate a base hardware config
+nixos-generate-config --root /tmp/config --no-filesystems
+
+# get the infra repo
+nix-shell -p git
+git clone https://git.dynamicdiscord.de/kalipso/infrastructure
+cd infrastructure
+
+# add the new generated hardware config (and import in hosts configuration.nix)
+cp /tmp/config/etc/nixos/hardware-configuration.nix machines/bakunin/
+
+# check which harddrive we want to install the system on
+lsblk #choose harddrive, in this case /dev/sda
+
+# run nixos-install on that harddrive
+sudo nix --extra-experimental-features flakes --extra-experimental-features nix-command run 'github:nix-community/disko/latest#disko-install' -- --flake .#bakunin --disk main /dev/sda
+
+# this failed with out of memory
+# running again showed: no disk left on device
+# it seems the usb stick i used for flashing is way to small
+# it is only 
+# with a bigger one (more than 8 gig i guess) it should work
+# instead the disko-install tool i try the old method - first partitioning using disko and then installing the system
+# for that i needed to adjust ./machines/modules/disko/btrfs-laptop.nix and set the disk to "/dev/sda"
+
+sudo nix --extra-experimental-features "flakes nix-command" run 'github:nix-community/disko/latest' -- --mode format --flake .#bakunin
+
+# failed with no space left on device.
+# problem is lots of data is written to the local /nix/store which is mounted on tmpfs in ram
+# it seems that a workaround could be modifying the bootable stick to contain a swap partition to extend tmpfs storage
+
+
+```