Install cockpit and enable socket on prometheus

* fix: source DuckDNS token from Vault

* chore: rotate DuckDNS Vault token

.gitignore

@@ -0,0 +1,2 @@
+# DuckDNS runtime files contain a rendered Vault token and must stay on the host.
+/dotfiles/server/duckdns/

AGENTS.md

@@ -53,6 +53,7 @@ Ansible-driven personal infrastructure repo for Fedora and Void desktops, Fedora
   - AI coding agents: `ansible-playbook ansible/site.yml --limit <host> --tags ai_agents --check --diff`
   - Mail bootstrap: `sh -n scripts/bootstrap_mail.sh` and `shellcheck scripts/bootstrap_mail.sh`
   - Server compose render: `docker compose -f /opt/docker/server/docker-compose.yml config`
+  - DuckDNS config only: `ansible-playbook ansible/site.yml --limit prometheus --tags duckdns --check --diff`
 
 ## Conventions
 - Use FQCN Ansible modules.
@@ -96,6 +97,10 @@ The dotfile vars follow the same split: `desktop_common_dotfiles` carries mode-i
 - Windows applications are installed manually and are not managed from the WSL profile.
 
 ## Rocky Server Notes
+- DuckDNS is rendered by `profile_server` from host-local `server_duckdns_domain` and
+  `vault_duckdns_token`. Keep the rotated token in encrypted Vault or untracked local vars, never in
+  dotfiles. The private `~/duckdns/duck.sh` keeps the existing entrypoint; rendering uses `no_log`
+  and disables diffs. Provisioning does not execute the updater or change its external schedule.
 - `rocky_server` is a child of both `platform_rocky` and `server`; `prometheus` is its active target.
 - The target must already provide `server_username` with local sudo access before the profile runs.
 - The Rocky profile installs Docker CE, uses firewalld, preserves SELinux enforcement, and renders the

README.it.md

@@ -184,6 +184,25 @@ Lo stato attuale del profilo server include:
 - attivazione di firewalld con servizio SSH esplicitamente abilitato
 - Syncthing escluso dal profilo server Rocky
 
+### DuckDNS
+
+`profile_server` genera `~/duckdns/duck.sh` con permessi `0700`, mantenendo il percorso dello
+script e `duck.log`. Definire `server_duckdns_domain` negli host vars del server e salvare il
+**nuovo token rigenerato** in `vault_duckdns_token`, nel Vault cifrato `secrets/vault.yml`
+(`ansible-vault edit secrets/vault.yml`) oppure negli override non versionati `secrets/vault.local.yml`.
+Non committare lo script generato e non passare il token sulla riga di comando. Il rendering
+nasconde output e diff sensibili; lo script verifica TLS e passa il token a curl tramite stdin.
+Il playbook non esegue lo script e non modifica la sua schedulazione esterna.
+
+```bash
+ansible-playbook ansible/site.yml --limit prometheus --tags duckdns --check --diff
+ansible-playbook ansible/site.yml --limit prometheus --tags duckdns
+```
+
+La cancellazione dalla cronologia non revoca il token: rigenerarlo sul pannello DuckDNS.
+Dopo la bonifica, riclonare gli altri checkout senza unire nuovamente la vecchia storia;
+salvare separatamente eventuali modifiche non committate senza copiare segreti.
+
 ### Migrazione dati
 
 Dopo il provisioning Rocky, eseguire `scripts/migrate_prometheus_data.sh` **sul server Ubuntu

README.md

@@ -120,6 +120,24 @@ ansible-playbook ansible/site.yml --limit prometheus \
 
 The target must already provide `server_username` with local sudo access.
 
+### DuckDNS
+
+`profile_server` renders `~/duckdns/duck.sh` with mode `0700`, keeping the existing updater path
+and `duck.log`. Set `server_duckdns_domain` in the server's host vars and store the **rotated**
+`vault_duckdns_token` in encrypted `secrets/vault.yml` (using `ansible-vault edit secrets/vault.yml`)
+or untracked `secrets/vault.local.yml`. Never commit the rendered script or put the token on a
+command line. Rendering hides secret output/diffs; the updater verifies TLS and passes the token
+to curl through stdin. The playbook neither runs the updater nor changes its external schedule.
+
+```bash
+ansible-playbook ansible/site.yml --limit prometheus --tags duckdns --check --diff
+ansible-playbook ansible/site.yml --limit prometheus --tags duckdns
+```
+
+An exposed token must be revoked/regenerated on DuckDNS: deleting it from Git history does not
+revoke it. After a history cleanup, re-clone other checkouts rather than merging the old history
+back in; preserve any uncommitted work separately without copying secrets.
+
 ### Data migration
 
 Provision Rocky first, then run the migration script **on the retired Ubuntu source host**. It is
@@ -142,7 +160,7 @@ cutover. The destination SSH host key must already be trusted and the destinatio
 passwordless sudo for `rsync`. It preserves ACLs but not extended attributes, so source SELinux labels
 are not transferred; the Rocky Compose bind mounts apply their own `:Z` labels when containers start.
 
-## Aegis
+## DNS Filter
 
 `aegis` is a Raspberry Pi 4 running Fedora IoT. Generate Ignition from
 `ansible/bootstrap/aegis.bu` with the included Podman/Butane helper, then write the SD card with

ansible/inventory/group_vars/rocky_server.yml

@@ -38,7 +38,6 @@ rocky_docker_conflicting_packages:
   - docker-latest
   - docker-latest-logrotate
   - docker-logrotate
-  - podman
   - runc
 
 enabled_services:

ansible/inventory/group_vars/server.yml

@@ -37,9 +37,6 @@ server_dotfiles:
   - src: .themes.gitignore
     dest: .themes.gitignore
     mode: "0644"
-  - src: duckdns/
-    dest: duckdns/
-    mode: preserve
 
 server_templates:
   - src: server/.gitconfig.j2

ansible/inventory/host_vars/prometheus.yml

@@ -6,3 +6,12 @@ ansible_port: 22
 ansible_ssh_private_key_file: /home/fscotto/.ssh/id_ed25519
 
 server_username: rocky
+server_duckdns_domain: fscotto
+
+host_packages:
+  - cockpit
+  - cockpit-navigator
+  - cockpit-podman
+
+host_enabled_services:
+  - cockpit.socket

ansible/roles/profile_server/tasks/duckdns.yml

@@ -0,0 +1,33 @@
+---
+- name: Require DuckDNS domain and Vault token before deployment
+  ansible.builtin.assert:
+    that:
+      - >-
+        server_duckdns_domain | default('') is
+        regex('[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?', match_type='fullmatch')
+      - >-
+        vault_duckdns_token | default('') is
+        regex('[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}', match_type='fullmatch')
+    fail_msg: >-
+      Define server_duckdns_domain in host_vars and the rotated vault_duckdns_token
+      in encrypted Vault or an untracked local vars file before deploying DuckDNS.
+  no_log: true
+
+- name: Ensure private DuckDNS directory exists
+  ansible.builtin.file:
+    path: "{{ server_user_home }}/duckdns"
+    state: directory
+    owner: "{{ server_username }}"
+    group: "{{ server_user_group }}"
+    mode: "0700"
+
+- name: Render DuckDNS updater with the Vault token
+  ansible.builtin.template:
+    src: duck.sh.j2
+    dest: "{{ server_user_home }}/duckdns/duck.sh"
+    owner: "{{ server_username }}"
+    group: "{{ server_user_group }}"
+    mode: "0700"
+    validate: /bin/sh -n %s
+  no_log: true
+  diff: false

ansible/roles/profile_server/tasks/main.yml

@@ -18,6 +18,10 @@
       Server container secrets are missing. Define vault_navidrome_db_password and
       vault_postgres_root_password in secrets/vault.yml or another vars source.
 
+- name: Configure DuckDNS updater
+  tags: [dotfiles, dotfiles:server, duckdns]
+  ansible.builtin.import_tasks: duckdns.yml
+
 - name: Ensure server directories exist
   tags: [dotfiles, services]
   ansible.builtin.file:

ansible/roles/profile_server/templates/duck.sh.j2

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Managed by Ansible. Contains a Vault token; never copy this file into Git.
+set -eu
+umask 077
+
+log_file={{ (server_user_home ~ '/duckdns/duck.log') | quote }}
+
+# Keep the token out of process arguments and verify the HTTPS certificate.
+if ! response=$(curl --fail --silent --show-error --connect-timeout 10 --max-time 30 --config - <<'DUCKDNS_CONFIG'
+url = "https://www.duckdns.org/update?domains={{ server_duckdns_domain }}&token={{ vault_duckdns_token }}&ip="
+DUCKDNS_CONFIG
+); then
+  printf 'ERROR\n' > "$log_file"
+  exit 1
+fi
+
+case "$response" in
+  OK) printf 'OK\n' > "$log_file" ;;
+  *)
+    printf 'KO\n' > "$log_file"
+    printf 'DuckDNS update failed.\n' >&2
+    exit 1
+    ;;
+esac

ansible/site.yml

@@ -7,6 +7,7 @@
       tags: [always]
       ansible.builtin.include_vars:
         file: "{{ playbook_dir }}/../secrets/vault.yml"
+      no_log: true
       when: >-
         lookup('ansible.builtin.fileglob', playbook_dir + '/../secrets/vault.yml',
         errors='ignore', wantlist=True) | length > 0
@@ -15,6 +16,7 @@
       tags: [always]
       ansible.builtin.include_vars:
         file: "{{ playbook_dir }}/../secrets/vault.local.yml"
+      no_log: true
       when: >-
         lookup('ansible.builtin.fileglob', playbook_dir + '/../secrets/vault.local.yml',
         errors='ignore', wantlist=True) | length > 0

dotfiles/desktop/.ssh/config

@@ -1,4 +1,4 @@
-Host vps
+Host prometheus-ubuntu
     IdentityFile ~/.ssh/id_rsa_vps
 
 Host *

dotfiles/server/duckdns/duck.log

@@ -1 +0,0 @@
-OK

dotfiles/server/duckdns/duck.sh

@@ -1 +0,0 @@
-echo url="https://www.duckdns.org/update?domains=fscotto&token=d173a037-8a10-4e40-8d9d-bebedbdde086&ip=" | curl -k -o ~/duckdns/duck.log -K -

secrets/vault.yml

@@ -1,40 +1,45 @@
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secrets/vault.yml.example

@@ -1,4 +1,5 @@
 ---
+vault_duckdns_token: "CHANGEME"
 vault_personal_full_name: "REPLACE_ME"
 vault_git_email: "REPLACE_ME"
 vault_git_signing_key: "REPLACE_ME"