Switch to cloud-init for host initialization

modules/host/templates/boothook.sh.tpl

@@ -0,0 +1,5 @@
+#!/bin/sh
+#cloud-boothook
+
+# Fix hostname after reboot
+hostnamectl hostname "${hostname}"

modules/host/templates/userdata.yaml.tpl

@@ -0,0 +1,45 @@
+#cloud-config
+write_files:
+
+# Configure private network
+- content: |
+    BOOTPROTO='dhcp'
+    STARTMODE='auto'
+  path: /etc/sysconfig/network/ifcfg-eth1
+
+# Disable ssh password authentication
+- content: |
+    PasswordAuthentication no
+    X11Forwarding no
+    MaxAuthTries 2
+    AllowTcpForwarding no
+    AllowAgentForwarding no
+    AuthorizedKeysFile .ssh/authorized_keys
+  path: /etc/ssh/sshd_config.d/kube-hetzner.conf
+
+# Setting the right reboot mode
+- content: | 
+    REBOOT_METHOD=kured
+  path: /etc/transactional-update.conf
+  append: true
+
+# Add ssh authorized keys
+ssh_authorized_keys:
+%{ for key in sshAuthorizedKeys ~}
+  - ${key}
+%{ endfor ~}
+
+runcmd:
+
+# Activate the private network
+- systemctl reload network
+
+# Activate ssh configuration
+- systemctl reload sshd
+
+# Fix hostname (during first boot)
+- hostnamectl hostname ${hostname}
+
+# Finishing automatic reboot via Kured setup
+- systemctl reload transactional-update
+- rebootmgrctl set-strategy off