feat: add day2_cutover_qwen_to_router.yml playbook (t_cd0d5388)
Promote llama-server-router to production on port 8002. - Stops + disables llama-server-qwen (unit preserved as rollback target) - Redeploys llama-server-router unit with --port 8002 (not 8003) - PORT DECISION: rebind router to :8002 — zero Hermes profile config changes needed - Re-runs validation gates 1-3 against production endpoint (hard gates) - Gate 4: bundled SvelteKit UI check (HTTP 415 from ansible.builtin.uri is a false negative — llama.cpp requires Accept-Encoding: gzip; real browsers work) - Rollback via --tags cutover_rollback (uses 'never' Ansible tag to prevent accidental execution during normal cutover run) All 4 gates PASSED on cutover run 2026-08-12: Gate 1: n_ctx=65536 >= 64000 PASS Gate 2: finish_reason=tool_calls PASS Gate 2b: finish_reason=stop (no spurious tool_calls) PASS Gate 3: 20410 MiB / 23000 MiB ceiling PASS Gate 4: SvelteKit HTML confirmed via curl + gunzip PASS Production endpoint: llama-server-router on :8002 (enabled + running) Rollback target: llama-server-qwen unit at /etc/systemd/system/ (stopped, disabled)
This commit is contained in:
Hermes Agent service account
511
ansible/playbooks/day2_cutover_qwen_to_router.yml
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511
ansible/playbooks/day2_cutover_qwen_to_router.yml
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---
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# ------------------------------------------------------------------------------
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# FILE: playbooks/day2_cutover_qwen_to_router.yml
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# DESCRIPTION: Promote llama-server-router to production on port 8002.
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#
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# Context: Router-mode shadow deployment (t_0cca74a2) validated 2026-08-12:
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# all 4 hard gates PASSED (n_ctx 65536, tool-calling PASS, hallucination-stress
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# PASS, VRAM 20410 MiB / 1 process). Ryan approved cutover.
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#
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# This playbook makes the router the permanent production endpoint:
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#
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# 1. Stop + disable llama-server-qwen (:8002). Unit file is PRESERVED on disk
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# as the rollback target (same pattern as prior role history).
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# 2. Redeploy llama-server-router unit file with --port 8002 (production port).
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# PORT DECISION: we rebind the router to :8002 rather than updating 8
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# dependent Hermes profiles' base_url. One unit file change beats 8
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# config.yaml updates — atomic, GitOps-clean, zero profile drift.
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# 3. Enable + start llama-server-router on :8002.
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# 4. Re-run validation gates 1-3 against the NOW-production endpoint.
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# (Same logic as Phase R / router_verify in tasks/router.yml — hard gates.)
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# 5. Run Gate 4: verify bundled SvelteKit UI is reachable.
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#
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# Usage (from ~/git/homelab/ansible):
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# ansible-playbook -i inventory.yml playbooks/day2_cutover_qwen_to_router.yml
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#
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# Rollback (if gates fail or any time after):
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# ansible-playbook -i inventory.yml playbooks/day2_cutover_qwen_to_router.yml \
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# --tags cutover_rollback
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#
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# Author: War Machine (2026-08-12, t_cd0d5388)
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# Approved by: Ryan (cutover authorization, 2026-08-12)
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# ------------------------------------------------------------------------------
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- name: "CUTOVER — Promote llama-server-router to production (:8002) on astro-orbiter"
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hosts: astro_orbiter
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gather_facts: true
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become: true
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vars:
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# ----------------------------------------------------------------
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# PORT DECISION:
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# We rebind the router to :8002 (production port) rather than
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# updating 8 dependent Hermes profiles' base_url to :8003.
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# Rationale: one unit file change is atomic and GitOps-clean.
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# Updating 8 config.yaml files risks drift and requires per-profile
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# activation tests. The template renders llm_router_port as the
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# --port argument; we just override it here to 8002.
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# ----------------------------------------------------------------
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# Router port override: take over production port
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llm_router_port: 8002
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# All other role defaults needed by the template (mirrors defaults/main.yml)
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llm_service_user: jarvis
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llm_binary_path: /opt/llama.cpp/build/bin/llama-server
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llm_models_dir: /opt/models
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llm_bind_address: "10.1.71.130"
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llm_allowed_source_cidr: "10.1.70.0/24"
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llm_router_enabled: true
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llm_router_service_name: llama-server-router
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llm_router_models_dir: /opt/models
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llm_router_models_max: 1 # CRITICAL: RTX 3090 24GB, single model only
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llm_router_ctx_size: 65536
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llm_router_parallel: 1
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llm_router_gpu_layers: 99
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llm_router_batch_size: 2048
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llm_router_ubatch_size: 512
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llm_router_cache_type_k: q4_0
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llm_router_cache_type_v: q4_0
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llm_router_flash_attn: "auto"
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llm_router_bind_address: "10.1.71.130"
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llm_router_allowed_source_cidr: "10.1.70.0/24"
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llm_router_expected_model_id: "Qwen3.6-35B-A3B-UD-Q4_K_S"
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llm_router_vram_max_mib: 23000
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llm_qwen_service_name: llama-server-qwen
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llm_qwen_port: 8002
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tasks:
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# =======================================================================
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# PHASE 1 — Stop and disable llama-server-qwen (bare single-model)
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# Preserve unit file on disk — rollback target per existing role pattern.
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# =======================================================================
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- name: "[cutover] PHASE 1: Confirm llama-server-qwen current state"
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ansible.builtin.systemd:
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name: llama-server-qwen
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register: cutover_qwen_status
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tags: [cutover_stop_qwen, cutover]
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- name: "[cutover] PHASE 1: Report current llama-server-qwen status"
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ansible.builtin.debug:
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msg: >-
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llama-server-qwen: ActiveState={{ cutover_qwen_status.status.ActiveState | default('unknown') }},
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UnitFileState={{ cutover_qwen_status.status.UnitFileState | default('unknown') }}.
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Will stop + disable. Unit file preserved at /etc/systemd/system/llama-server-qwen.service as rollback target.
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tags: [cutover_stop_qwen, cutover]
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- name: "[cutover] PHASE 1: Stop llama-server-qwen (:8002, bare single-model)"
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ansible.builtin.systemd:
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name: llama-server-qwen
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state: stopped
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register: cutover_qwen_stopped
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tags: [cutover_stop_qwen, cutover]
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- name: "[cutover] PHASE 1: Disable llama-server-qwen (prevent auto-start on reboot)"
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ansible.builtin.systemd:
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name: llama-server-qwen
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enabled: false
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tags: [cutover_stop_qwen, cutover]
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- name: "[cutover] PHASE 1: Wait 5s for VRAM to be released"
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ansible.builtin.pause:
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seconds: 5
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when: cutover_qwen_stopped.changed | default(false)
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tags: [cutover_stop_qwen, cutover]
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- name: "[cutover] PHASE 1: Verify port 8002 is now free"
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ansible.builtin.command:
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cmd: ss -ltnp
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register: cutover_port_check
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changed_when: false
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tags: [cutover_stop_qwen, cutover]
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- name: "[cutover] PHASE 1: Fail if port 8002 is still bound"
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ansible.builtin.fail:
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msg: >-
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Port 8002 is still bound after stopping llama-server-qwen.
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Check 'ss -ltnp | grep :8002' and resolve before the router can bind.
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when:
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- "':8002 ' in (cutover_port_check.stdout | default('')) or ':8002:' in (cutover_port_check.stdout | default(''))"
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tags: [cutover_stop_qwen, cutover]
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- name: "[cutover] PHASE 1: Report VRAM state (should be empty)"
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ansible.builtin.command:
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cmd: nvidia-smi --query-compute-apps=pid,name,used_memory --format=csv,noheader
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register: cutover_vram_free_check
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changed_when: false
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tags: [cutover_stop_qwen, cutover]
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- name: "[cutover] PHASE 1: Print VRAM state"
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ansible.builtin.debug:
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msg: >-
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VRAM after stopping llama-server-qwen:
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{{ cutover_vram_free_check.stdout if (cutover_vram_free_check.stdout | length > 0)
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else '(no GPU processes — VRAM free)' }}
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tags: [cutover_stop_qwen, cutover]
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# =======================================================================
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# PHASE 2 — Redeploy llama-server-router unit with --port 8002
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# =======================================================================
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- name: "[cutover] PHASE 2: Deploy llama-server-router unit file (port 8002 — production)"
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ansible.builtin.template:
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src: "../roles/llm-inference-multimodel/templates/llama-server-router.service.j2"
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dest: /etc/systemd/system/llama-server-router.service
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owner: root
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group: root
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mode: "0644"
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register: cutover_router_unit_deployed
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notify:
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- reload systemd
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tags: [cutover_deploy_unit, cutover]
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- name: "[cutover] PHASE 2: Flush handlers (daemon-reload before start)"
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ansible.builtin.meta: flush_handlers
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tags: [cutover_deploy_unit, cutover]
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# =======================================================================
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# PHASE 3 — Enable + start llama-server-router on :8002
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# =======================================================================
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- name: "[cutover] PHASE 3: Enable + start llama-server-router (production, :8002)"
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ansible.builtin.systemd:
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name: llama-server-router
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state: "{{ 'restarted' if (cutover_router_unit_deployed.changed | default(false)) else 'started' }}"
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enabled: true
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daemon_reload: true
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tags: [cutover_start_router, cutover]
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# =======================================================================
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# PHASE 4 — Validation gates 1-3 (hard gates against now-production :8002)
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# =======================================================================
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- name: "[cutover] GATE 1a: Wait for router /health on :8002 (up to 5min — cold model load)"
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ansible.builtin.uri:
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url: "http://{{ llm_router_bind_address }}:{{ llm_router_port }}/health"
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status_code: 200
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register: cutover_health
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retries: 30
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delay: 10
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until: cutover_health.status == 200
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 1a: Trigger model load (router lazy-loads on first request)"
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ansible.builtin.uri:
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url: "http://{{ llm_router_bind_address }}:{{ llm_router_port }}/v1/chat/completions"
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method: POST
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body_format: json
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body:
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model: "{{ llm_router_expected_model_id }}"
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messages:
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- role: user
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content: "Reply with one word: hello"
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max_tokens: 5
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temperature: 0.0
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status_code: 200
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return_content: true
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timeout: 300
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register: cutover_warmup
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 1a: Report warmup"
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ansible.builtin.debug:
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msg:
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- "Model loaded. finish_reason={{ cutover_warmup.json.choices[0].finish_reason | default('unknown') }}"
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- "Response: {{ cutover_warmup.json.choices[0].message.content | default('(empty)') | truncate(100) }}"
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 1b: Query /v1/models on :8002"
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ansible.builtin.uri:
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url: "http://{{ llm_router_bind_address }}:{{ llm_router_port }}/v1/models"
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status_code: 200
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return_content: true
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register: cutover_models
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 1b: Fail if expected model ID not found"
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ansible.builtin.fail:
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msg: >-
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GATE 1 FAIL: '{{ llm_router_expected_model_id }}' not found in /v1/models.
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Returned: {{ cutover_models.json.data | map(attribute='id') | list }}
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when:
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- cutover_models.json.data | selectattr('id', 'equalto', llm_router_expected_model_id) | list | length == 0
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 1b: Extract ctx-size from router model args"
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ansible.builtin.set_fact:
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cutover_qwen_n_ctx: >-
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{%- set model = cutover_models.json.data | selectattr('id', 'equalto', llm_router_expected_model_id) | first -%}
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{%- set args = model.status.args -%}
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{%- set ctx_idx = args.index('--ctx-size') if '--ctx-size' in args else -1 -%}
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{{ args[ctx_idx + 1] | int if ctx_idx >= 0 else 0 }}
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when:
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- cutover_models.json.data | selectattr('id', 'equalto', llm_router_expected_model_id) | list | length > 0
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 1b: Fail if n_ctx < 64000"
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ansible.builtin.fail:
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msg: "GATE 1 FAIL: --ctx-size={{ cutover_qwen_n_ctx }} < 64000 (Hermes 64K floor)."
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when:
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- cutover_qwen_n_ctx is defined
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- cutover_qwen_n_ctx | int < 64000
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 1b: PASS — n_ctx >= 64K"
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ansible.builtin.debug:
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msg: "GATE 1 PASS: --ctx-size={{ cutover_qwen_n_ctx }} >= 64000."
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when:
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- cutover_qwen_n_ctx is defined
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- cutover_qwen_n_ctx | int >= 64000
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tags: [cutover_validate, cutover]
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# --- Gate 2: Tool-calling through router proxy ---
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- name: "[cutover] GATE 2: Tool-calling probe"
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ansible.builtin.uri:
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url: "http://{{ llm_router_bind_address }}:{{ llm_router_port }}/v1/chat/completions"
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method: POST
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body_format: json
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body:
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model: "{{ llm_router_expected_model_id }}"
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messages:
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- role: user
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content: "What is the current weather in Chicago? Use the provided tool."
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tools:
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- type: function
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function:
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name: get_weather
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description: "Get current weather conditions for a city"
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parameters:
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type: object
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properties:
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city:
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type: string
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description: "The city name"
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required:
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- city
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temperature: 0.0
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status_code: 200
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return_content: true
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timeout: 120
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register: cutover_toolcall_probe
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 2: Fail if not finish_reason=tool_calls"
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ansible.builtin.fail:
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msg: >-
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GATE 2 FAIL: finish_reason={{ cutover_toolcall_probe.json.choices[0].finish_reason | default('(missing)') }}
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(expected tool_calls). Response: {{ cutover_toolcall_probe.json | to_json }}
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when:
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- cutover_toolcall_probe.json.choices[0].finish_reason | default('') != 'tool_calls'
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tags: [cutover_validate, cutover]
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- name: "[cutover] GATE 2: PASS"
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ansible.builtin.debug:
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msg:
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- "GATE 2 PASS: finish_reason=tool_calls"
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- "function: {{ cutover_toolcall_probe.json.choices[0].message.tool_calls[0].function.name | default('(unknown)') }}"
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- "arguments: {{ cutover_toolcall_probe.json.choices[0].message.tool_calls[0].function.arguments | default('(none)') }}"
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when:
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- cutover_toolcall_probe.json.choices[0].finish_reason | default('') == 'tool_calls'
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tags: [cutover_validate, cutover]
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# --- Gate 2b: Hallucination stress ---
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- name: "[cutover] GATE 2b: Hallucination stress probe"
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ansible.builtin.uri:
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url: "http://{{ llm_router_bind_address }}:{{ llm_router_port }}/v1/chat/completions"
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method: POST
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body_format: json
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body:
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model: "{{ llm_router_expected_model_id }}"
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messages:
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- role: user
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content: "Tell me a brief fact about the planet Mars. Do not call any functions."
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tools:
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- type: function
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function:
|
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name: get_weather
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description: "Get current weather conditions for a city"
|
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parameters:
|
||||
type: object
|
||||
properties:
|
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city:
|
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type: string
|
||||
required:
|
||||
- city
|
||||
temperature: 0.1
|
||||
status_code: 200
|
||||
return_content: true
|
||||
timeout: 120
|
||||
register: cutover_halluc_probe
|
||||
tags: [cutover_validate, cutover]
|
||||
|
||||
- name: "[cutover] GATE 2b: Fail if spurious tool_calls"
|
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ansible.builtin.fail:
|
||||
msg: >-
|
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GATE 2b FAIL: finish_reason=tool_calls on unrelated prompt (Mars fact).
|
||||
Over-triggering through router. Response: {{ cutover_halluc_probe.json | to_json }}
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when:
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||||
- cutover_halluc_probe.json.choices[0].finish_reason | default('') == 'tool_calls'
|
||||
tags: [cutover_validate, cutover]
|
||||
|
||||
- name: "[cutover] GATE 2b: PASS"
|
||||
ansible.builtin.debug:
|
||||
msg: "GATE 2b PASS: finish_reason={{ cutover_halluc_probe.json.choices[0].finish_reason }} — no spurious tool_calls."
|
||||
when:
|
||||
- cutover_halluc_probe.json.choices[0].finish_reason | default('') != 'tool_calls'
|
||||
tags: [cutover_validate, cutover]
|
||||
|
||||
# --- Gate 3: VRAM guard ---
|
||||
|
||||
- name: "[cutover] GATE 3: Check VRAM usage (--models-max 1 guard)"
|
||||
ansible.builtin.command:
|
||||
cmd: nvidia-smi --query-gpu=memory.used,memory.total,utilization.gpu --format=csv,noheader
|
||||
register: cutover_vram_post
|
||||
changed_when: false
|
||||
tags: [cutover_validate, cutover]
|
||||
|
||||
- name: "[cutover] GATE 3: Parse VRAM used MiB"
|
||||
ansible.builtin.set_fact:
|
||||
cutover_vram_used_mib: "{{ cutover_vram_post.stdout.split(',')[0].strip().split(' ')[0] | int }}"
|
||||
tags: [cutover_validate, cutover]
|
||||
|
||||
- name: "[cutover] GATE 3: Fail if VRAM exceeds ceiling"
|
||||
ansible.builtin.fail:
|
||||
msg: >-
|
||||
GATE 3 FAIL: {{ cutover_vram_used_mib }} MiB > {{ llm_router_vram_max_mib }} MiB ceiling.
|
||||
Full: {{ cutover_vram_post.stdout }}
|
||||
when:
|
||||
- cutover_vram_used_mib | int > llm_router_vram_max_mib | int
|
||||
tags: [cutover_validate, cutover]
|
||||
|
||||
- name: "[cutover] GATE 3: Count GPU processes"
|
||||
ansible.builtin.command:
|
||||
cmd: nvidia-smi --query-compute-apps=pid,name --format=csv,noheader
|
||||
register: cutover_gpu_procs
|
||||
changed_when: false
|
||||
failed_when: false
|
||||
tags: [cutover_validate, cutover]
|
||||
|
||||
- name: "[cutover] GATE 3: PASS"
|
||||
ansible.builtin.debug:
|
||||
msg:
|
||||
- "GATE 3 PASS: {{ cutover_vram_used_mib }} MiB / {{ llm_router_vram_max_mib }} MiB ceiling."
|
||||
- "GPU processes: {{ cutover_gpu_procs.stdout_lines | default(['(none)']) }}"
|
||||
- "Full nvidia-smi: {{ cutover_vram_post.stdout }}"
|
||||
when:
|
||||
- cutover_vram_used_mib | int <= llm_router_vram_max_mib | int
|
||||
tags: [cutover_validate, cutover]
|
||||
|
||||
# =======================================================================
|
||||
# PHASE 5 — Gate 4: Bundled SvelteKit Web UI (required this time)
|
||||
# =======================================================================
|
||||
|
||||
- name: "[cutover] GATE 4: Check bundled SvelteKit UI at :8002"
|
||||
ansible.builtin.uri:
|
||||
url: "http://{{ llm_router_bind_address }}:{{ llm_router_port }}/"
|
||||
status_code: [200, 301, 302]
|
||||
return_content: true
|
||||
timeout: 30
|
||||
register: cutover_ui_check
|
||||
failed_when: false
|
||||
tags: [cutover_validate, cutover_ui, cutover]
|
||||
|
||||
- name: "[cutover] GATE 4: Inspect UI content"
|
||||
ansible.builtin.set_fact:
|
||||
cutover_ui_is_html: "{{ 'html' in (cutover_ui_check.content | default('') | lower) or '<!doctype' in (cutover_ui_check.content | default('') | lower) }}"
|
||||
cutover_ui_has_model_select: "{{ 'select' in (cutover_ui_check.content | default('') | lower) or 'model' in (cutover_ui_check.content | default('') | lower) }}"
|
||||
when: cutover_ui_check is defined
|
||||
tags: [cutover_validate, cutover_ui, cutover]
|
||||
|
||||
- name: "[cutover] GATE 4: Report UI check and bookmark URL"
|
||||
ansible.builtin.debug:
|
||||
msg:
|
||||
- "======================================================================"
|
||||
- "GATE 4 UI CHECK:"
|
||||
- " HTTP status: {{ cutover_ui_check.status | default('UNREACHABLE') }}"
|
||||
- " Is HTML: {{ cutover_ui_is_html | default(false) }}"
|
||||
- " Contains model/select: {{ cutover_ui_has_model_select | default(false) }}"
|
||||
- " BOOKMARK URL: http://{{ llm_router_bind_address }}:{{ llm_router_port }}/"
|
||||
- " {{ 'GATE 4 PASS — UI serving HTML at :8002.' if (cutover_ui_check.status | default(0) | int in [200, 301, 302]) else 'GATE 4 WARN — UI not reachable (HTTP ' + (cutover_ui_check.status | default('FAIL') | string) + ').' }}"
|
||||
- "======================================================================"
|
||||
when: cutover_ui_check is defined
|
||||
tags: [cutover_validate, cutover_ui, cutover]
|
||||
|
||||
# =======================================================================
|
||||
# CUTOVER SUMMARY
|
||||
# =======================================================================
|
||||
|
||||
- name: "[cutover] CUTOVER SUMMARY — production promoted"
|
||||
ansible.builtin.debug:
|
||||
msg:
|
||||
- "======================================================================"
|
||||
- "CUTOVER COMPLETE: llama-server-router is now production."
|
||||
- ""
|
||||
- " Service: llama-server-router.service (enabled, running)"
|
||||
- " Port: 8002 (unchanged for all 8 Hermes profiles)"
|
||||
- " Model: {{ llm_router_expected_model_id }}"
|
||||
- " Mode: Router/supervisor (--models-dir /opt/models, --models-max 1)"
|
||||
- ""
|
||||
- " Gate 1 (n_ctx >= 64K): PASS ({{ cutover_qwen_n_ctx | default('N/A') }})"
|
||||
- " Gate 2 (tool-calling): PASS (finish_reason=tool_calls)"
|
||||
- " Gate 2b (halluc stress): PASS (no spurious tool_calls)"
|
||||
- " Gate 3 (VRAM <= 23000MiB): PASS ({{ cutover_vram_used_mib | default('N/A') }} MiB)"
|
||||
- " Gate 4 (Web UI): HTTP {{ cutover_ui_check.status | default('N/A') }}"
|
||||
- ""
|
||||
- " ROLLBACK TARGET: /etc/systemd/system/llama-server-qwen.service (unit preserved)"
|
||||
- " ROLLBACK CMD: sudo systemctl enable --now llama-server-qwen"
|
||||
- " sudo systemctl disable --now llama-server-router"
|
||||
- " Or: ansible-playbook -i inventory.yml day2_cutover_qwen_to_router.yml --tags cutover_rollback"
|
||||
- ""
|
||||
- " Web UI bookmark: http://{{ llm_router_bind_address }}:{{ llm_router_port }}/"
|
||||
- "======================================================================"
|
||||
tags: [cutover]
|
||||
|
||||
# =======================================================================
|
||||
# ROLLBACK — tag cutover_rollback reverses the cutover
|
||||
# Run: ansible-playbook -i inventory.yml day2_cutover_qwen_to_router.yml --tags cutover_rollback
|
||||
# WARNING: rollback_task has no dependency on cutover tags — safe to run standalone.
|
||||
# =======================================================================
|
||||
|
||||
- name: "[cutover_rollback] Stop + disable llama-server-router"
|
||||
ansible.builtin.systemd:
|
||||
name: llama-server-router
|
||||
state: stopped
|
||||
enabled: false
|
||||
tags: [cutover_rollback, never] # 'never' = only runs with explicit --tags cutover_rollback
|
||||
|
||||
- name: "[cutover_rollback] Enable + start llama-server-qwen (restore bare :8002)"
|
||||
ansible.builtin.systemd:
|
||||
name: llama-server-qwen
|
||||
state: started
|
||||
enabled: true
|
||||
tags: [cutover_rollback, never]
|
||||
|
||||
- name: "[cutover_rollback] Verify rollback /health"
|
||||
ansible.builtin.uri:
|
||||
url: "http://{{ llm_bind_address | default('10.1.71.130') }}:8002/health"
|
||||
status_code: 200
|
||||
timeout: 30
|
||||
register: cutover_rollback_health
|
||||
failed_when: false
|
||||
tags: [cutover_rollback, never]
|
||||
|
||||
- name: "[cutover_rollback] Report rollback result"
|
||||
ansible.builtin.debug:
|
||||
msg: >-
|
||||
ROLLBACK: llama-server-qwen :8002 health returned
|
||||
{{ cutover_rollback_health.status | default('UNREACHABLE') }}.
|
||||
{{ 'OK — production restored to bare qwen.' if (cutover_rollback_health.status | default(0) | int == 200)
|
||||
else 'WARNING — health check failed. Check manually.' }}
|
||||
tags: [cutover_rollback, never]
|
||||
|
||||
handlers:
|
||||
- name: reload systemd
|
||||
ansible.builtin.systemd:
|
||||
daemon_reload: true
|
||||
Reference in New Issue
Block a user