llm-inference-multimodel: role + day1 playbook (phase 0 discover approved)

ansible/roles/llm-inference-multimodel/tasks/firewall.yml

@@ -0,0 +1,64 @@
+---
+# ------------------------------------------------------------------------------
+# FILE: roles/llm-inference-multimodel/tasks/firewall.yml
+# DESCRIPTION: Phase 3 — scope :8001 (new) and reconsider :8000 (existing
+#              pattern) exposure, per plan §5.
+#
+#              Current baseline pattern (0.0.0.0:8000, no auth) is a
+#              pre-existing flagged issue — this role does NOT repeat it
+#              uncritically for the new port, and tightens both:
+#              1. Bind address: handled in systemd.yml templates via
+#                 {{ llm_bind_address }} (default 10.1.71.130, NOT 0.0.0.0).
+#              2. Firewall: ufw rules scoping both ports to
+#                 {{ llm_allowed_source_cidr }} rather than open LAN-wide.
+#
+#              Idempotent: named rule comments + `state: present` so reruns
+#              don't duplicate rules (per plan §4 idempotency note).
+# ------------------------------------------------------------------------------
+
+- name: Check whether ufw is installed/active
+  ansible.builtin.command:
+    cmd: ufw status
+  register: llm_ufw_status
+  changed_when: false
+  failed_when: false
+  become: true
+
+- name: WARNING — ufw not active, firewall scoping cannot be applied
+  ansible.builtin.debug:
+    msg: >-
+      ufw does not appear to be active on this host (`ufw status` returned:
+      {{ llm_ufw_status.stdout | default('n/a') }}). Firewall scoping for
+      ports {{ llm_aux_port }}/{{ llm_toolcall_port }} was skipped. This is a
+      gap vs plan §5 item 2 — flag to Ryan before relying on bind-address
+      alone for exposure control.
+  when: "'Status: active' not in (llm_ufw_status.stdout | default(''))"
+
+- name: Allow aux port ({{ llm_aux_port }}) from the Hermes source subnet
+  community.general.ufw:
+    rule: allow
+    port: "{{ llm_aux_port | string }}"
+    proto: tcp
+    src: "{{ llm_allowed_source_cidr }}"
+    comment: "llm-inference-multimodel: aux (Phi-4) — scoped to Hermes subnet"
+  become: true
+  when: "'Status: active' in (llm_ufw_status.stdout | default(''))"
+
+- name: Allow tool-calling port ({{ llm_toolcall_port }}) from the Hermes source subnet
+  community.general.ufw:
+    rule: allow
+    port: "{{ llm_toolcall_port | string }}"
+    proto: tcp
+    src: "{{ llm_allowed_source_cidr }}"
+    comment: "llm-inference-multimodel: toolcall (Mistral-Small) — scoped to Hermes subnet"
+  become: true
+  when: "'Status: active' in (llm_ufw_status.stdout | default(''))"
+
+- name: Report firewall scoping applied
+  ansible.builtin.debug:
+    msg: >-
+      Firewall scoping applied for ports {{ llm_aux_port }} and
+      {{ llm_toolcall_port }}, restricted to source {{ llm_allowed_source_cidr }}.
+      Reverse-proxy + API-key enforcement (plan §5 item 3) is NOT implemented
+      by this role — flagged as an optional follow-up phase, not bundled into
+      this minimum-viable rollout.