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# Nexus Environment Configuration
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# Copy this file to .env and modify values for your deployment.
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# Or run the web installer at /app/install.html to auto-generate this file.
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#
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# Generate secret keys: openssl rand -hex 32
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# ── Brand ──
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NEXUS_SYSTEM_NAME=Nexus
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NEXUS_SYSTEM_TITLE=Nexus — 服务器运维管理平台
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# ── Server ──
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NEXUS_HOST=0.0.0.0
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NEXUS_PORT=8600
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# ── Deployment (auto-set by installer) ──
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NEXUS_DEPLOY_PATH=/opt/nexus
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# Comma-separated frontend origins for CORS
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NEXUS_CORS_ORIGINS=http://localhost:8600
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# Base URL for Agent heartbeat reporting
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NEXUS_API_BASE_URL=http://localhost:8600
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# ── Database (MySQL, REQUIRED) ──
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NEXUS_DATABASE_URL=mysql+aiomysql://root:password@127.0.0.1:3306/nexus
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# Pool params: auto-calculated by installer from MySQL max_connections
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# Formula: pool_size = max(20, maxConn*0.4), overflow = max(20, maxConn*0.3)
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# Default below matches MySQL max_connections=400 (160+120=280 max)
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# install wizard will overwrite these with values tuned to your MySQL instance
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NEXUS_DB_POOL_SIZE=160
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NEXUS_DB_MAX_OVERFLOW=120
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# ── Security (REQUIRED — generate with: openssl rand -hex 32) ──
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NEXUS_SECRET_KEY=change-me-use-openssl-rand-hex-32
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NEXUS_API_KEY=change-me-use-openssl-rand-hex-32
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NEXUS_ENCRYPTION_KEY=
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# ── Redis (REQUIRED) ──
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NEXUS_REDIS_URL=redis://127.0.0.1:6379/0
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# ── SSH ──
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NEXUS_SSH_STRICT_HOST_CHECKING=false
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# ── Alert Thresholds (%) ──
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NEXUS_CPU_ALERT_THRESHOLD=80
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NEXUS_MEM_ALERT_THRESHOLD=80
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NEXUS_DISK_ALERT_THRESHOLD=80
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# ── Health Check ──
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NEXUS_HEALTH_CHECK_INTERVAL=60
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# ── Telegram Alerts (optional — configure in Settings UI) ──
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NEXUS_TELEGRAM_BOT_TOKEN=
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NEXUS_TELEGRAM_CHAT_ID=
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# ── MySQL MCP (@yclenove/mysql-mcp-server — run: python scripts/sync_mysql_mcp_env.py) ──
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# Cursor 从项目根 .env 读取；与 NEXUS_DATABASE_URL 保持一致；默认只读
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# MYSQL_HOST=127.0.0.1
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# MYSQL_PORT=3306
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# MYSQL_USER=root
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# MYSQL_PASSWORD=password
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# MYSQL_DATABASE=nexus
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# MYSQL_READONLY=true # production / MCP read-only
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# MYSQL_READONLY=false # local dev: full DML/DDL via MCP
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# MYSQL_DATABASE_ALLOWLIST=nexus
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