Configure Aegis host DNS and NFS support

AGENTS.md

@@ -48,6 +48,8 @@ Ansible-driven personal infrastructure repo for Fedora and Void desktops, Fedora
   - Rocky server after activation: `ansible-playbook ansible/site.yml --limit <host> --check --diff`
   - Atlas NAS: `ansible-playbook ansible/site.yml --limit atlas --check --diff`
   - Aegis IoT: `ansible-playbook ansible/site.yml --limit aegis --check --diff`
+  - Aegis NFS client layer: `ansible-playbook ansible/site.yml --limit aegis --tags nfs --list-tasks`
+  - Aegis host DNS: `ansible-playbook ansible/site.yml --limit aegis --tags dns --check --diff`
 - Focused checks:
   - Emacs is disabled by default; temporary Emacs check: `ansible-playbook ansible/site.yml --limit <host> --tags emacs --check --diff -e emacs_enabled=true`
   - AI coding agents: `ansible-playbook ansible/site.yml --limit <host> --tags ai_agents --check --diff`
@@ -221,14 +223,18 @@ The dotfile vars follow the same split: `desktop_common_dotfiles` carries mode-i
 - `aegis` is a remote Fedora IoT Raspberry Pi 4 node. Bootstrap it once with
   `ansible/bootstrap/aegis.bu`; the remaining configuration is applied by `profile_aegis` over SSH.
 - Fedora IoT is immutable. Do not add it to mutable Fedora package or shared dotfile roles.
-- `profile_aegis` owns rootful Podman Quadlets, persistent container state under `/var/lib`, the
-  Podman auto-update timer, LAN-restricted firewalld rules, and SSH hardening. Keep
-  `aegis_lan_subnet` and `aegis_adguard_web_port` host-specific; SSH permits only the declared
+- `profile_aegis` owns the `nfs-utils` rpm-ostree layer used as the Atlas NFS client and reports the
+  required reboot without initiating it. It also owns rootful Podman Quadlets, persistent container
+  state under `/var/lib`, the Podman auto-update timer, LAN-restricted firewalld rules, and SSH hardening. Keep
+  `aegis_lan_subnet`, `aegis_adguard_web_port`, and `aegis_network_connection_uuid` host-specific;
+  SSH permits only the declared
   key-authenticated users, never root or password authentication. Keep Apple IDs and other
   credentials in Vault and use `no_log` for their rendering.
 - `aegis_adguard_web_port` defaults to `80`. The initial AdGuard Home wizard port `3000` is intentionally unmanaged: open and close it manually only while
   completing initial setup. Disable the local systemd-resolved stub through `profile_aegis` before
   AdGuard binds port 53; keep
-  `/etc/resolv.conf` linked to `/run/systemd/resolve/resolv.conf` so Aegis retains router-provided DNS.
+  `/etc/resolv.conf` linked to `/run/systemd/resolve/resolv.conf`. LAN clients may use AdGuard, but
+  Aegis must use the independent upstream DNS declared by `aegis_host_dns_servers` so Greenboot does
+  not depend on the AdGuard container during startup.
 - iCloudPD requires post-deployment interactive MFA initialization; its cookie/configuration state is
   persisted in `/var/lib/icloudpd/config`.

README.md

@@ -193,12 +193,17 @@ ansible/bootstrap/generate-aegis-ign.sh --write IMAGE DEVICE
 The controller manages it remotely as `pi@aegis`; unlike local desktop profiles, Aegis is
 intentionally an SSH inventory target. `profile_aegis` manages rootful Podman Quadlets for AdGuard
 Home and iCloudPD, persistent data under `/var/lib`, the Podman auto-update timer, LAN-restricted
-firewalld rules, SSH key-only access for `pi`, and `wake-ikaros`. Set the host-local
-`aegis_lan_subnet` and `aegis_adguard_web_port` values before applying it. The playbook permits
+firewalld rules, SSH key-only access for `pi`, the `nfs-utils` rpm-ostree layer required by the
+Atlas NFS client, and `wake-ikaros`. A new layered package deployment requires a manual reboot; the
+role reports this condition but never reboots Aegis automatically. Set the host-local
+`aegis_lan_subnet`, `aegis_adguard_web_port`, and `aegis_network_connection_uuid` values before
+applying it. The playbook permits
 AdGuard Home HTTP on port `80`; the initial wizard port `3000` is intentionally unmanaged and must be
 opened and closed manually during initial setup. The profile disables the local systemd-resolved DNS
-stub and points `/etc/resolv.conf` to its full resolver data, freeing port 53
-for AdGuard while retaining DNS learned from the router. Define
+stub and points `/etc/resolv.conf` to its full resolver data, freeing port 53 for AdGuard. LAN clients
+may use AdGuard on Aegis, while Aegis itself uses the independent upstream DNS declared by
+`aegis_host_dns_servers`; this prevents Greenboot from depending on the AdGuard container during
+startup. Reboot Aegis after changing its NetworkManager DNS profile. Define
 `vault_aegis_icloudpd_apple_id` in Vault before applying it. iCloudPD still requires interactive MFA
 initialization after its first deployment.
 
@@ -213,6 +218,21 @@ ANSIBLE_LOCAL_TEMP=/tmp/ansible-local \
 ansible-playbook ansible/site.yml --limit aegis --check --diff --ask-become-pass
 ```
 
+Apply only the independent host DNS configuration, then reboot Aegis manually:
+
+```bash
+ANSIBLE_LOCAL_TEMP=/tmp/ansible-local \
+ansible-playbook ansible/site.yml --limit aegis --tags dns --ask-become-pass
+```
+
+Layer the Atlas NFS client package independently, then reboot Aegis manually when the role reports
+that the new deployment is ready:
+
+```bash
+ANSIBLE_LOCAL_TEMP=/tmp/ansible-local \
+ansible-playbook ansible/site.yml --limit aegis --tags nfs --ask-become-pass
+```
+
 ## NAS
 
 `atlas` is a Rocky Linux 9 NAS reached through SSH. Normally its pool already exists and the profile

ansible/inventory/host_vars/aegis.yml

@@ -9,6 +9,12 @@ ansible_ssh_use_tty: false
 
 aegis_lan_subnet: 192.168.178.0/24
 aegis_adguard_web_port: 80
+aegis_network_connection_name: FRITZ!Box 7530 NR
+aegis_network_connection_uuid: a52fda3d-3eb6-351f-bf04-753edcb76944
+aegis_host_dns_servers:
+  - 192.168.178.1
+aegis_host_dns_search_domains:
+  - fritz.box
 aegis_ssh_authorized_keys:
   - name: ikaros
     key: "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINrIxXjA3ffPwziKGR5gzc4gAoBehQPlnEMcXF4Wl0ZS ikaros"

ansible/roles/profile_aegis/defaults/main.yml

@@ -1,5 +1,11 @@
 ---
 aegis_hostname: aegis
+aegis_layered_packages:
+  - nfs-utils
+aegis_network_connection_name: ""
+aegis_network_connection_uuid: ""
+aegis_host_dns_servers: []
+aegis_host_dns_search_domains: []
 aegis_adguard_image: docker.io/adguard/adguardhome:latest
 aegis_icloudpd_image: docker.io/boredazfcuk/icloudpd:latest
 aegis_icloudpd_folder_structure: '{:%Y/%m/%d}'

ansible/roles/profile_aegis/tasks/main.yml

@@ -1,4 +1,18 @@
 ---
+- name: Manage Aegis layered packages
+  tags: [aegis, packages, nfs]
+  community.general.rpm_ostree_pkg:
+    name: "{{ aegis_layered_packages }}"
+    state: present
+  register: aegis_layered_packages_result
+  when: aegis_layered_packages | length > 0
+
+- name: Report reboot required for Aegis layered packages
+  tags: [aegis, packages, nfs]
+  ansible.builtin.debug:
+    msg: Reboot Aegis to activate the newly layered packages, then rerun the playbook.
+  when: aegis_layered_packages_result.needs_reboot | default(false)
+
 - name: Require Aegis iCloudPD Apple ID
   tags: [aegis, icloudpd]
   ansible.builtin.assert:
@@ -8,15 +22,86 @@
   no_log: true
 
 - name: Require completed Aegis network placeholders
-  tags: [aegis, firewall, services]
+  tags: [aegis, dns, firewall, network, services]
   ansible.builtin.assert:
     that:
       - aegis_lan_subnet != 'CHANGEME_LAN_SUBNET'
       - aegis_firewalld_zone | length > 0
       - aegis_adguard_web_port | int > 0
       - aegis_adguard_web_port | int < 65536
+      - aegis_network_connection_name | length > 0
+      - aegis_network_connection_uuid | length > 0
+      - aegis_host_dns_servers | length > 0
+      - ansible_facts["default_ipv4"]["address"] not in aegis_host_dns_servers
       - aegis_ssh_allowed_users | length > 0
-    fail_msg: Define the Aegis LAN subnet, firewalld zone, AdGuard web port, and SSH users.
+    fail_msg: >-
+      Define the Aegis LAN subnet, firewalld zone, AdGuard web port, independent host DNS,
+      NetworkManager connection, and SSH users. Aegis must not use its own address as upstream DNS.
+
+- name: Verify the declared Aegis NetworkManager connection exists
+  tags: [aegis, dns, network, services]
+  ansible.builtin.command:
+    argv:
+      - nmcli
+      - --get-values
+      - connection.id
+      - connection
+      - show
+      - uuid
+      - "{{ aegis_network_connection_uuid }}"
+  register: aegis_network_connection
+  changed_when: false
+  failed_when: >-
+    aegis_network_connection.rc != 0
+    or aegis_network_connection.stdout != aegis_network_connection_name
+
+- name: Read the current Aegis host DNS configuration
+  tags: [aegis, dns, network, services]
+  ansible.builtin.command:
+    argv:
+      - nmcli
+      - --get-values
+      - ipv4.ignore-auto-dns,ipv4.dns,ipv4.dns-search,ipv6.ignore-auto-dns
+      - connection
+      - show
+      - uuid
+      - "{{ aegis_network_connection_uuid }}"
+  register: aegis_host_dns_current
+  changed_when: false
+
+- name: Configure independent upstream DNS for the Aegis host
+  tags: [aegis, dns, network, services]
+  ansible.builtin.command:
+    argv:
+      - nmcli
+      - connection
+      - modify
+      - uuid
+      - "{{ aegis_network_connection_uuid }}"
+      - ipv4.ignore-auto-dns
+      - "yes"
+      - ipv4.dns
+      - "{{ aegis_host_dns_servers | join(',') }}"
+      - ipv4.dns-search
+      - "{{ aegis_host_dns_search_domains | join(',') }}"
+      - ipv6.ignore-auto-dns
+      - "yes"
+  register: aegis_host_dns_profile
+  when: >-
+    aegis_host_dns_current.stdout_lines !=
+    [
+      'yes',
+      aegis_host_dns_servers | join(','),
+      aegis_host_dns_search_domains | join(','),
+      'yes'
+    ]
+  changed_when: true
+
+- name: Report Aegis reboot required for host DNS changes
+  tags: [aegis, dns, network, services]
+  ansible.builtin.debug:
+    msg: Reboot Aegis to activate its independent upstream DNS before testing another OS update.
+  when: aegis_host_dns_profile.changed | default(false)
 
 - name: Set Aegis hostname
   tags: [aegis, services]