Initial Cezen AI Suite installer — Entry tier

ansible/roles/base/tasks/main.yml

@@ -0,0 +1,91 @@
+---
+# Base role: OS updates, essential packages, Python/Miniconda
+- name: Update apt cache
+  apt:
+    update_cache: yes
+    cache_valid_time: 3600
+
+- name: Upgrade all packages
+  apt:
+    upgrade: dist
+    autoremove: yes
+
+- name: Install essential system packages
+  apt:
+    name:
+      - curl
+      - wget
+      - git
+      - build-essential
+      - ca-certificates
+      - gnupg
+      - lsb-release
+      - software-properties-common
+      - unzip
+      - htop
+      - net-tools
+      - jq
+      - python3-pip
+      - python3-venv
+    state: present
+
+- name: Create cezen user
+  user:
+    name: cezen
+    shell: /bin/bash
+    home: /opt/cezen
+    create_home: yes
+    groups: sudo
+    append: yes
+
+- name: Create cezen directories
+  file:
+    path: "{{ item }}"
+    state: directory
+    owner: cezen
+    group: cezen
+    mode: "0755"
+  loop:
+    - /opt/cezen
+    - /opt/cezen/models
+    - /opt/cezen/data
+    - /opt/cezen/logs
+
+- name: Download Miniconda
+  get_url:
+    url: https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh
+    dest: /tmp/miniconda.sh
+    mode: "0755"
+  retries: 3
+  delay: 10
+
+- name: Install Miniconda
+  become_user: cezen
+  command: bash /tmp/miniconda.sh -b -p /opt/cezen/miniconda
+  args:
+    creates: /opt/cezen/miniconda/bin/conda
+
+- name: Add conda to cezen PATH
+  lineinfile:
+    path: /opt/cezen/.bashrc
+    line: 'export PATH="/opt/cezen/miniconda/bin:$PATH"'
+    create: yes
+    owner: cezen
+
+- name: Create cezen conda environment (Python 3.11)
+  become_user: cezen
+  command: /opt/cezen/miniconda/bin/conda create -n cezen python=3.11 -y
+  args:
+    creates: /opt/cezen/miniconda/envs/cezen
+
+- name: Install LangChain + LlamaIndex + HuggingFace in conda env
+  become_user: cezen
+  shell: |
+    /opt/cezen/miniconda/bin/conda run -n cezen pip install \
+      langchain langchain-community llama-index \
+      transformers huggingface-hub \
+      peft bitsandbytes accelerate \
+      fastapi uvicorn[standard] \
+      sentence-transformers
+  retries: 3
+  delay: 15