update readme

README.md

@@ -1,12 +1,36 @@
-usage:
+These scripts setup a blank hardware server according to our requirements including partitions, raids, debootstrap, package installation and various other configuration. The goal is to create a server ready to join into the swarm.
+
+
+Usage (from a live system):
 ```sh
-./setup.sh <server> <fqdn>
+# (!) wipes the start sectors of all disks (!)
+# (!) review before executing (!)
+./reset.sh
+reboot
+
+
+./setup.sh <template> <fqdn>
 
 # example:
-./setup.sh ovh token.lubi.link
+./setup.sh ovh_rise-1 server321.example.com
+
+
+# Unlock the disk after booting the server from disk:
+# Dropbear is configured on 222
+ssh -p 222 <fqdn> /bin/cryptroot-unlock
 ```
 
-after connecting to dropbear:
-```sh
-/bin/cryptroot-unlock && exit
-```
+`setup.sh` executes the hardware specific template files, debootstraps and invokes the actual installer inside the fresh environment.  
+As much as possible should be done in the chroot, as only there we have control over the software (the live system is normally provided by the hardware provider).
+
+
+Templates (`hardware/*`) consist of three files:
+* `esp` - a symlink to the desired ESP partition
+* `parted.sh` - script to prepare the partitions. Should create ESP (/boot/efi), md0 (/) and md1 (/boot)
+* `network.sh` - creates the neccessary configs in /etc/systemd/network
+
+
+`config/*` gets copied to the chroot and contains static config files
+
+
+`authorized_keys/*` is used to create the users and populate their respective `~/.ssh/authorized_keys`