Update ISO installer tiers and backend deployment

ansible/max.yml

@@ -0,0 +1,83 @@
+---
+# Nexus One AI — Max Tier Stack
+# Hardware: 4–8× NVIDIA H100/A100/RTX 5090 (80–320 GB VRAM total), 256–512 GB DDR5, 8 TB+ NVMe, 100 GbE
+# Capacity: 100+ concurrent users
+# Runs after NVIDIA driver reboot (phase1_nvidia.yml)
+#
+# Differences from Pro tier:
+#   - vLLM tensor-parallel across 4+ GPUs (set vllm_tensor_parallel to GPU count)
+#   - Full precision models (no quantization required)
+#   - Advanced fine-tuning (QLoRA + DeepSpeed ZeRO-3 for multi-GPU training)
+#   - Full MLflow + MinIO stack for experiment tracking and artifact storage
+#   - All optional services enabled by default
+
+- name: Nexus One AI — Max Tier Stack
+  hosts: localhost
+  connection: local
+  become: true
+  vars:
+    cezen_user: "cezen"
+    cezen_home: "/opt/cezen"
+    cezen_login_home: "/home/cezen"
+    python_version: "3.11"
+    cuda_version: "12.6"
+    skip_roles: ""                # comma-separated list of roles to skip
+    gpu_available: false
+    tier: "max"
+
+    # ── vLLM — Max defaults ──────────────────────
+    # Full-precision Llama-3.1-70B across 4 GPUs by default.
+    # For HGX/DGX-class systems with 8 GPUs set vllm_tensor_parallel: 8
+    # and switch to Llama-3.1-405B or Mixtral-8x22B.
+    vllm_model: "meta-llama/Meta-Llama-3.1-70B-Instruct"
+    vllm_tensor_parallel: 4
+    vllm_gpu_memory_util: "0.90"
+    vllm_max_model_len: 32768
+    vllm_quantization: ""          # full precision at Max tier
+
+    # ── Ollama — large model defaults ────────────
+    ollama_default_model: "llama3.1:70b"
+
+    # ── DeepSpeed — multi-GPU fine-tuning ────────
+    deepspeed_enabled: true
+    deepspeed_zero_stage: 3        # ZeRO-3 for large model training
+
+  roles:
+    - role: base
+      when: "'base' not in skip_roles.split(',')"
+
+    - role: docker
+      when: "'docker' not in skip_roles.split(',')"
+
+    - role: k3s
+      when: "'k3s' not in skip_roles.split(',')"
+
+    - role: ollama
+      when: "'ollama' not in skip_roles.split(',')"
+
+    - role: vllm
+      when: "'vllm' not in skip_roles.split(',')"
+
+    - role: jupyterlab
+      when: "'jupyterlab' not in skip_roles.split(',')"
+
+    - role: chromadb
+      when: "'chromadb' not in skip_roles.split(',')"
+
+    - role: mlflow
+      when: "'mlflow' not in skip_roles.split(',')"
+
+    - role: minio
+      when: "'minio' not in skip_roles.split(',')"
+
+    - role: monitoring
+      when: "'monitoring' not in skip_roles.split(',')"
+
+    - role: cezen-backend
+      when: "'cezen-backend' not in skip_roles.split(',')"
+
+    - role: cezen-ttyd
+      when: "'cezen-ttyd' not in skip_roles.split(',')"
+
+    - role: cezen-nginx
+      when: "'cezen-nginx' not in skip_roles.split(',')"