Inventory cleanup; add ipt-server host_vars for all ipt hosts.

- hosts: remove unreachable/decommissioned hosts (file-ah-neu, file-ah-alt,
  file-km-neu, ga-al-gw-neu, gw-opp-neu, zapata-neu, zapata-alt, bbb-server,
  ki-fm, server28, ...) and duplicate aliases (etherpad = b.ns,
  cl-irights-neu = cl-irights, oolm-db = o21, devel-ruby = devel-todo).
- host_vars: add <short>-ipt-server.yml (fw_manage_config: false) for all
  hosts running the ipt-server firewall, generated by extract-fw-host-vars.py.
- host_vars: move/remove obsolete host directories, replace alias
  directories by symlinks (cl-lubax -> o32, cl-vbrg -> o34, oolm-db -> o21).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

host_vars/o32.oopen.de/o32-common.yml

@@ -139,6 +139,8 @@ network_interfaces:
 
 sshd_login_grace_time: 0
 
+sshd_permit_root_login: !!str "no"
+
 
 # ---
 # vars used by roles/common/tasks/apt.yml
@@ -151,7 +153,7 @@ sshd_login_grace_time: 0
 # vars used by roles/common/tasks/systemd-resolved.yml
 # ---
 
-systemd_resolved: true
+systemd_resolved: false
 
 # CyberGhost - Schnelle Verbindung mit Keine-Logs-Datenschutzrichtlinie
 #   Primäre DNS-Adresse: 38.132.106.139
@@ -293,6 +295,11 @@ cron_user_entries:
     hour: '05'
     job: /root/bin/mysql/flush_host_cache.sh
 
+  - name: "Background job for nextcloud instance 'cloud.lubax.de'"
+    minute: '*/15'
+    hour: '*'
+    job: sudo -u "www-data" /usr/local/php/bin/php  -f /var/www/cloud.lubax.de/htdocs/cron.php
+
   - name: "Generate/Renew Let's Encrypt Certificates if needed (using dehydrated script)"
     minute: '23'
     hour: '05'
@@ -345,6 +352,10 @@ sudo_users:
 #
 # see: roles/common/tasks/vars
 
+sudoers_file_user_privileges:
+  - name: back
+    entry: 'ALL=(www-data) NOPASSWD: /usr/local/php/bin/php'
+
 
 # ---
 # vars used by roles/common/tasks/caching-nameserver.yml

host_vars/o32.oopen.de/o32-ipt-server.yml

@@ -0,0 +1,24 @@
+---
+# ipt-firewall configuration for o32.oopen.de
+# Generated by extract-fw-host-vars.py - review before committing!
+# Place in: host_vars/<hostname>/<short-hostname>-ipt-server.yml
+
+fw_manage_config: false
+
+# --- Network
+fw_ext_interfaces:
+  - "eth0"
+fw_ext_ips_v4:
+  - "46.224.120.108"
+fw_ext_ips_v6:
+  - "2a01:4f8:1c1a:4d53::1"
+
+# --- Munin
+munin_remote_ipv4: 37.27.121.227
+munin_remote_ipv6: "2a01:4f9:3070:2bda::227"
+
+# --- HTTP
+fw_http_server_ips: $ext_1_ip
+
+# --- Mail
+fw_mail_client_ips: $ext_1_ip