descargar-modelos.sh(文件已创建)
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| 1 | + | #!/bin/bash | |
| 2 | + | # ============================================================================= | |
| 3 | + | # descargar-modelos.sh — Descarga de modelos según nivel de hardware | |
| 4 | + | # ============================================================================= | |
| 5 | + | # | |
| 6 | + | # Uso: | |
| 7 | + | # chmod +x descargar-modelos.sh | |
| 8 | + | # ./descargar-modelos.sh # Modo interactivo (pregunta el nivel) | |
| 9 | + | # ./descargar-modelos.sh --nivel1 # Descarga solo modelos nivel 1 | |
| 10 | + | # ./descargar-modelos.sh --nivel2 # Descarga modelos nivel 2 (recomendado) | |
| 11 | + | # ./descargar-modelos.sh --nivel3 # Descarga modelos nivel 3 | |
| 12 | + | # ./descargar-modelos.sh --todos # Descarga todos los modelos | |
| 13 | + | # | |
| 14 | + | # Descripción: | |
| 15 | + | # Descarga los modelos recomendados según tu hardware. Cada nivel corresponde | |
| 16 | + | # a los rangos de RAM mencionados en el episodio. | |
| 17 | + | # | |
| 18 | + | # Requisitos: | |
| 19 | + | # - Ollama instalado (ver 02-instalacion/setup-ollama.sh) | |
| 20 | + | # - Conexión a internet | |
| 21 | + | # - Espacio en disco suficiente (ver tabla abajo) | |
| 22 | + | # | |
| 23 | + | # Tamaños aproximados (cuantizados): | |
| 24 | + | # Nivel 1: phi3.5 (~2.5 GB) + qwen2.5-coder:1.5b (~1 GB) = ~3.5 GB | |
| 25 | + | # Nivel 2: llama3.2:3b (~2 GB) + qwen2.5:7b (~4.5 GB) + deepseek-coder (~9 GB) | |
| 26 | + | # Nivel 3: llama3.1:8b (~5 GB) + mistral:7b (~4.5 GB) | |
| 27 | + | # Embeddings: nomic-embed-text (~0.3 GB) | |
| 28 | + | # | |
| 29 | + | # ============================================================================= | |
| 30 | + | ||
| 31 | + | set -euo pipefail | |
| 32 | + | ||
| 33 | + | # Colores para output | |
| 34 | + | VERDE='\033[0;32m' | |
| 35 | + | AMARILLO='\033[1;33m' | |
| 36 | + | AZUL='\033[0;34m' | |
| 37 | + | RESET='\033[0m' | |
| 38 | + | ||
| 39 | + | echo -e "${AZUL}==============================================${RESET}" | |
| 40 | + | echo -e "${AZUL} Descarga de modelos — Laboratorio IA Local${RESET}" | |
| 41 | + | echo -e "${AZUL}==============================================${RESET}" | |
| 42 | + | echo "" | |
| 43 | + | ||
| 44 | + | # --- Comprobar Ollama ---------------------------------------------------- | |
| 45 | + | if ! command -v ollama &>/dev/null; then | |
| 46 | + | echo "ERROR: Ollama no está instalado." | |
| 47 | + | echo " Ejecuta primero: curl -fsSL https://ollama.com/install.sh | sh" | |
| 48 | + | exit 1 | |
| 49 | + | fi | |
| 50 | + | ||
| 51 | + | echo -e " ${VERDE}✓${RESET} Ollama detectado: $(ollama --version 2>/dev/null || echo 'versión desconocida')" | |
| 52 | + | echo "" | |
| 53 | + | ||
| 54 | + | # --- Selección de nivel -------------------------------------------------- | |
| 55 | + | NIVEL="${1:-}" | |
| 56 | + | ||
| 57 | + | if [[ -z "$NIVEL" ]]; then | |
| 58 | + | echo "Selecciona tu nivel de hardware:" | |
| 59 | + | echo "" | |
| 60 | + | echo " Nivel 1 — Hardware humilde (8 GB RAM / Raspberry Pi 5)" | |
| 61 | + | echo " Modelos: phi3.5, qwen2.5-coder:1.5b" | |
| 62 | + | echo " Espacio: ~3.5 GB" | |
| 63 | + | echo "" | |
| 64 | + | echo " Nivel 2 — Punto dulce (16 GB RAM) ⭐ RECOMENDADO" | |
| 65 | + | echo " Modelos: llama3.2:3b, qwen2.5:7b, deepseek-coder-v2:16b-lite-instruct-q4_K_M" | |
| 66 | + | echo " Espacio: ~15 GB" | |
| 67 | + | echo "" | |
| 68 | + | echo " Nivel 3 — Hardware potente (32 GB+ RAM / GPU)" | |
| 69 | + | echo " Modelos: llama3.1:8b, mistral:7b" | |
| 70 | + | echo " Espacio: ~10 GB" | |
| 71 | + | echo "" | |
| 72 | + | echo " Todos — Descarga todos los modelos" | |
| 73 | + | echo " Espacio: ~28 GB" | |
| 74 | + | echo "" | |
| 75 | + | echo " Embeddings — Solo modelo de embeddings (para RAG)" | |
| 76 | + | echo " Modelo: nomic-embed-text (~0.3 GB)" | |
| 77 | + | echo "" | |
| 78 | + | read -r -p " ¿Qué nivel quieres descargar? [1/2/3/todos/emb]: " NIVEL | |
| 79 | + | echo "" | |
| 80 | + | fi | |
| 81 | + | ||
| 82 | + | # --- Mapear nivel a modelos --------------------------------------------- | |
| 83 | + | case "$NIVEL" in | |
| 84 | + | --nivel1|1) | |
| 85 | + | echo -e "${AZUL}Nivel 1: Hardware humilde${RESET}" | |
| 86 | + | MODELOS=( | |
| 87 | + | "phi3.5" | |
| 88 | + | "qwen2.5-coder:1.5b" | |
| 89 | + | ) | |
| 90 | + | ;; | |
| 91 | + | --nivel2|2) | |
| 92 | + | echo -e "${AZUL}Nivel 2: Punto dulce (RECOMENDADO)${RESET}" | |
| 93 | + | MODELOS=( | |
| 94 | + | "llama3.2:3b" | |
| 95 | + | "qwen2.5:7b" | |
| 96 | + | "deepseek-coder-v2:16b-lite-instruct-q4_K_M" | |
| 97 | + | ) | |
| 98 | + | ;; | |
| 99 | + | --nivel3|3) | |
| 100 | + | echo -e "${AZUL}Nivel 3: Hardware potente${RESET}" | |
| 101 | + | MODELOS=( | |
| 102 | + | "llama3.1:8b" | |
| 103 | + | "mistral:7b" | |
| 104 | + | ) | |
| 105 | + | ;; | |
| 106 | + | --todos|todos) | |
| 107 | + | echo -e "${AZUL}Todos los modelos${RESET}" | |
| 108 | + | MODELOS=( | |
| 109 | + | "phi3.5" | |
| 110 | + | "qwen2.5-coder:1.5b" | |
| 111 | + | "llama3.2:3b" | |
| 112 | + | "qwen2.5:7b" | |
| 113 | + | "deepseek-coder-v2:16b-lite-instruct-q4_K_M" | |
| 114 | + | "llama3.1:8b" | |
| 115 | + | "mistral:7b" | |
| 116 | + | ) | |
| 117 | + | ;; | |
| 118 | + | --emb|emb) | |
| 119 | + | echo -e "${AZUL}Solo modelo de embeddings${RESET}" | |
| 120 | + | MODELOS=( | |
| 121 | + | "nomic-embed-text" | |
| 122 | + | ) | |
| 123 | + | ;; | |
| 124 | + | *) | |
| 125 | + | echo "ERROR: Nivel no reconocido: $NIVEL" | |
| 126 | + | echo " Usa: 1, 2, 3, todos, o emb" | |
| 127 | + | exit 1 | |
| 128 | + | ;; | |
| 129 | + | esac | |
| 130 | + | ||
| 131 | + | echo "" | |
| 132 | + | echo " Modelos a descargar:" | |
| 133 | + | for modelo in "${MODELOS[@]}"; do | |
| 134 | + | echo " - $modelo" | |
| 135 | + | done | |
| 136 | + | echo "" | |
| 137 | + | ||
| 138 | + | # --- Confirmar ----------------------------------------------------------- | |
| 139 | + | read -r -p " ¿Continuar con la descarga? [s/N]: " respuesta | |
| 140 | + | if [[ ! "$respuesta" =~ ^[sS]$ ]]; then | |
| 141 | + | echo " Descarga cancelada." | |
| 142 | + | exit 0 | |
| 143 | + | fi | |
| 144 | + | ||
| 145 | + | echo "" | |
| 146 | + | ||
| 147 | + | # --- Descargar modelos --------------------------------------------------- | |
| 148 | + | for modelo in "${MODELOS[@]}"; do | |
| 149 | + | echo -e "${AMARILLO}Descargando:${RESET} ollama pull $modelo" | |
| 150 | + | echo " (Esto puede tardar varios minutos según tu conexión)" | |
| 151 | + | echo "" | |
| 152 | + | ||
| 153 | + | # Ejecutar ollama pull | |
| 154 | + | ollama pull "$modelo" | |
| 155 | + | ||
| 156 | + | echo -e "${VERDE} ✓${RESET} $modelo descargado" | |
| 157 | + | echo "" | |
| 158 | + | done | |
| 159 | + | ||
| 160 | + | # --- Descargar modelo de embeddings (si no está ya incluido) ------------- | |
| 161 | + | if [[ "$NIVEL" != "emb" && "$NIVEL" != "--emb" ]]; then | |
| 162 | + | echo -e "${AMARILLO}¿Descargar también modelo de embeddings?${RESET}" | |
| 163 | + | echo " nomic-embed-text (~0.3 GB) — necesario para RAG" | |
| 164 | + | read -r -p " [s/N]: " respuesta | |
| 165 | + | if [[ "$respuesta" =~ ^[sS]$ ]]; then | |
| 166 | + | echo "" | |
| 167 | + | echo -e "${AMARILLO}Descargando:${RESET} ollama pull nomic-embed-text" | |
| 168 | + | ollama pull nomic-embed-text | |
| 169 | + | echo -e "${VERDE} ✓${RESET} nomic-embed-text descargado" | |
| 170 | + | fi | |
| 171 | + | fi | |
| 172 | + | ||
| 173 | + | # --- Resumen final ------------------------------------------------------- | |
| 174 | + | echo "" | |
| 175 | + | echo -e "${VERDE}==============================================${RESET}" | |
| 176 | + | echo -e "${VERDE} Descarga completada${RESET}" | |
| 177 | + | echo -e "${VERDE}==============================================${RESET}" | |
| 178 | + | echo "" | |
| 179 | + | echo " Modelos disponibles localmente:" | |
| 180 | + | echo "" | |
| 181 | + | ollama list | |
| 182 | + | echo "" | |
| 183 | + | echo " Para probar un modelo:" | |
| 184 | + | echo " ollama run qwen2.5:7b \"Explícame qué es Linux\"" | |
| 185 | + | echo "" | |
| 186 | + | echo " Para eliminar un modelo:" | |
| 187 | + | echo " ollama rm qwen2.5:7b" | |
| 188 | + | echo "" | |
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