feat: 定时解析argus-master产生的资源文件，生成动态配置文件，用于 Prometheus 热加载配置；

refs #9

src/metric/prometheus/build/Dockerfile

@@ -11,13 +11,32 @@ RUN if [ "$USE_INTRANET" = "true" ]; then \
         echo "deb [trusted=yes] http://10.68.64.1/ubuntu2204/ jammy main" > /etc/apt/sources.list && \
         echo 'Acquire::https::Verify-Peer "false";' > /etc/apt/apt.conf.d/99disable-ssl-check && \
         echo 'Acquire::https::Verify-Host "false";' >> /etc/apt/apt.conf.d/99disable-ssl-check; \
+    else \
+        echo "Configuring fast apt sources for external network..." && \
+        # 查找并替换sources.list文件
+        find /etc/apt -name "sources.list*" -exec sed -i 's/archive.ubuntu.com/mirrors.aliyun.com/g' {} \; && \
+        find /etc/apt -name "sources.list*" -exec sed -i 's/security.ubuntu.com/mirrors.aliyun.com/g' {} \; && \
+        # 使用阿里云源
+        echo "deb http://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse" > /etc/apt/sources.list && \
+        echo "deb http://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse" >> /etc/apt/sources.list && \
+        echo "deb http://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse" >> /etc/apt/sources.list; \
     fi
 
-# 常用工具
-RUN apt-get update && \
-    apt-get install -y supervisor net-tools inetutils-ping vim && \
+# 验证源配置并安装常用工具
+RUN echo "=== Current apt sources ===" && \
+    cat /etc/apt/sources.list && \
+    echo "=== Updating package list ===" && \
+    apt-get update && \
+    echo "=== Installing packages ===" && \
+    apt-get install -y --no-install-recommends \
+        supervisor \
+        net-tools \
+        inetutils-ping \
+        vim \
+        python3 \
+        python3-pip && \
     apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 # 如果是部署环境替换 apt 源
 RUN if [ "$USE_INTRANET" = "true" ]; then \
@@ -57,9 +76,22 @@ COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
 COPY start-prometheus-supervised.sh /usr/local/bin/start-prometheus-supervised.sh
 RUN chmod +x /usr/local/bin/start-prometheus-supervised.sh
 
+# targets 更新脚本
+COPY start-targets-updater.sh /usr/local/bin/start-targets-updater.sh
+RUN chmod +x /usr/local/bin/start-targets-updater.sh
+
+# targets 更新 Python 脚本
+COPY update_targets.py /usr/local/bin/update_targets.py
+RUN chmod +x /usr/local/bin/update_targets.py
+
+# exporter 配置文件
+COPY exporter_config.json ${PROMETHEUS_BASE_PATH}/exporter_config.json
+
 # 自定义 prometheus 配置文件
 COPY prometheus.yml /etc/prometheus/prometheus.yml
 
+RUN chown nobody:nogroup ${PROMETHEUS_BASE_PATH}/exporter_config.json /etc/prometheus/prometheus.yml
+
 USER root
 
 EXPOSE 9090

src/metric/prometheus/build/README.md

@@ -13,60 +13,6 @@
 - 规则文件路径: `${PROMETHEUS_BASE_PATH}/rules/*.yml`
 - 监控目标文件路径: `${PROMETHEUS_BASE_PATH}/targets/`
 
-## 使用示例
-
-### 1. 使用默认路径
-```bash
-docker run -d \
-  --name prometheus \
-  -p 9090:9090 \
-  -v /host/prometheus/data:/private/argus/metric/prometheus \
-  prometheus:latest
-```
-
-### 2. 自定义基础路径
-```bash
-docker run -d \
-  --name prometheus \
-  -p 9090:9090 \
-  -e PROMETHEUS_BASE_PATH=/custom/prometheus/path \
-  -v /host/prometheus/data:/custom/prometheus/path \
-  prometheus:latest
-```
-
-### 3. Kubernetes 部署示例
-```yaml
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: prometheus
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: prometheus
-  template:
-    metadata:
-      labels:
-        app: prometheus
-    spec:
-      containers:
-      - name: prometheus
-        image: prometheus:latest
-        env:
-        - name: PROMETHEUS_BASE_PATH
-          value: "/data/prometheus"
-        ports:
-        - containerPort: 9090
-        volumeMounts:
-        - name: prometheus-data
-          mountPath: /data/prometheus
-      volumes:
-      - name: prometheus-data
-        persistentVolumeClaim:
-          claimName: prometheus-pvc
-```
-
 ## 目录结构
 
 容器启动后会在 `${PROMETHEUS_BASE_PATH}` 下创建以下目录结构：
@@ -118,9 +64,51 @@ chown -R 2133:2015 /path/to/prometheus/data
 chmod -R 755 /path/to/prometheus/data
 ```
 
+## 动态 Targets 配置
+
+### 配置流程
+
+1. **节点资源清单**: `nodes.json` 包含所有监控节点的基本信息
+   ```json
+   [
+     {
+       "node_id": "A1",
+       "user_id": "user01", 
+       "ip": "1.2.3.4",
+       "hostname": "dev-node-1",
+       "labels": ["production", "us-west-1"]
+     }
+   ]
+   ```
+
+2. **Exporter 配置**: `exporter_config.json` 定义各类型 exporter 的端口和标签模板
+   - 支持 dcgm (GPU监控) 和 node (系统监控) 两种类型
+   - 配置端口映射和标签模板规则
+
+3. **自动拆分生成**: `update_targets.py` 脚本根据节点清单自动生成对应的 targets 文件
+   - 读取 `nodes.json` 获取节点信息
+   - 按 exporter 类型拆分生成 `targets/*_exporter.json`
+   - 应用标签模板，生成完整的监控目标配置
+
+4. **热加载机制**: 
+   - 脚本支持守护进程模式，定期检查 `nodes.json` 变化
+   - 文件内容变化时自动重新生成 targets 配置
+   - Prometheus 自动发现并重新加载新的监控目标
+
+### 使用方式
+
+```bash
+# 单次更新（注意用户权限，此方法用于测试，但生成文件是 root 权限）
+python3 update_targets.py --config nodes.json --targets-dir targets/
+
+# 守护进程模式， 该进程托管于supervisor
+python3 update_targets.py --daemon --check-interval 30
+```
+
 ## 注意事项
 
 1. 确保挂载的目录有适当的读写权限
 2. 配置文件会在容器启动时自动生成，无需手动创建
 3. 可以通过修改环境变量 `PROMETHEUS_BASE_PATH` 来改变所有相关路径，无需重新构建镜像
 4. 自定义路径的目录会在启动时自动创建并设置权限
+5. `nodes.json` 文件变化后，targets 配置会自动更新，无需手动干预

src/metric/prometheus/build/exporter_config.json

@@ -0,0 +1,41 @@
+{
+  "exporters": {
+    "dcgm": {
+      "port": 9400,
+      "job_name": "dcgm",
+      "instance_prefix": "dcgm-exporter",
+      "description": "DCGM GPU 监控 exporter"
+    },
+    "node": {
+      "port": 9100,
+      "job_name": "node",
+      "instance_prefix": "node-exporter",
+      "description": "Node 系统监控 exporter"
+    }
+  },
+  "label_templates": {
+    "dcgm": {
+      "job": "dcgm",
+      "instance": "dcgm-exporter-{node_id}",
+      "node_id": "{node_id}",
+      "ip": "{ip}",
+      "hostname": "{hostname}",
+      "user_id": "{user_id}",
+      "tag": "{tag}"
+    },
+    "node": {
+      "job": "node",
+      "instance": "node-exporter-{node_id}",
+      "node_id": "{node_id}",
+      "ip": "{ip}",
+      "hostname": "{hostname}",
+      "user_id": "{user_id}",
+      "tag": "{tag}"
+    }
+  },
+  "settings": {
+    "backup_retention_days": 7,
+    "log_retention_days": 30,
+    "refresh_interval": "30s"
+  }
+}

src/metric/prometheus/build/start-targets-updater.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+set -euo pipefail
+
+echo "[INFO] Starting Prometheus Targets Updater under supervisor..."
+
+# 配置变量
+PROMETHEUS_BASE_PATH=${PROMETHEUS_BASE_PATH:-/private/argus/metric/prometheus}
+NODES_CONFIG_FILE=${NODES_CONFIG_FILE:-${PROMETHEUS_BASE_PATH}/nodes.json}
+TARGETS_DIR=${PROMETHEUS_BASE_PATH}/targets
+EXPORTER_CONFIG_FILE=${EXPORTER_CONFIG_FILE:-${PROMETHEUS_BASE_PATH}/exporter_config.json}
+CHECK_INTERVAL=${CHECK_INTERVAL:-30}
+LOG_LEVEL=${LOG_LEVEL:-INFO}
+
+echo "[INFO] Prometheus base path: ${PROMETHEUS_BASE_PATH}"
+echo "[INFO] Nodes config file: ${NODES_CONFIG_FILE}"
+echo "[INFO] Targets directory: ${TARGETS_DIR}"
+echo "[INFO] Exporter config file: ${EXPORTER_CONFIG_FILE}"
+echo "[INFO] Check interval: ${CHECK_INTERVAL}s"
+echo "[INFO] Log level: ${LOG_LEVEL}"
+
+mkdir -p "${TARGETS_DIR}"
+
+exec python3 /usr/local/bin/update_targets.py \
+    --config "${NODES_CONFIG_FILE}" \
+    --targets-dir "${TARGETS_DIR}" \
+    --exporter-config "${EXPORTER_CONFIG_FILE}" \
+    --log-level "${LOG_LEVEL}" \
+    --daemon \
+    --check-interval "${CHECK_INTERVAL}"

src/metric/prometheus/build/supervisord.conf

@@ -16,6 +16,18 @@ stopwaitsecs=30
 killasgroup=true
 stopasgroup=true
 
+[program:targets-updater]
+command=/usr/local/bin/start-targets-updater.sh
+user=nobody
+stdout_logfile=/var/log/supervisor/targets_updater.log
+stderr_logfile=/var/log/supervisor/targets_updater_error.log
+autorestart=true
+startretries=3
+startsecs=10
+stopwaitsecs=30
+killasgroup=true
+stopasgroup=true
+
 [unix_http_server]
 file=/var/run/supervisor.sock
 chmod=0700

src/metric/prometheus/build/update_targets.py

@@ -0,0 +1,416 @@
+#!/usr/bin/env python3
+"""
+Prometheus Targets 动态更新脚本
+
+脚本从节点配置文件读取节点信息，并动态生成对应的 Prometheus targets 文件。
+
+"""
+
+import json
+import os
+import sys
+import logging
+import argparse
+import time
+import hashlib
+from datetime import datetime
+from typing import Dict, List, Any
+from pathlib import Path
+
+
+class PrometheusTargetsManager:
+    """Prometheus Targets 管理器"""
+    
+    def __init__(self, config_file: str, targets_dir: str, exporter_config_file: str = None, log_level: str = "INFO"):
+        """
+        初始化管理器
+        
+        Args:
+            config_file: 节点配置文件路径
+            targets_dir: targets 文件输出目录
+            exporter_config_file: exporter 配置文件路径
+            log_level: 日志级别
+        """
+        self.config_file = Path(config_file)
+        self.targets_dir = Path(targets_dir)
+        self.exporter_config_file = Path(exporter_config_file) if exporter_config_file else None
+        self.log_level = log_level
+        self.last_mtime = 0  # 记录文件最后修改时间
+        self.last_content_hash = None  # 记录文件内容哈希
+        
+        # 设置日志
+        self._setup_logging()
+        
+        # 加载 exporter 配置（必需，失败则程序退出）
+        try:
+            full_config = self._load_exporter_config()
+            self.exporter_configs = full_config.get('exporters', {})
+            self.label_templates = full_config.get('label_templates', {})
+        except Exception as e:
+            self.logger.error(f"初始化失败，无法加载 exporter 配置: {e}")
+            raise
+        
+        # 确保 targets 目录存在
+        self.targets_dir.mkdir(parents=True, exist_ok=True)
+    
+    def _setup_logging(self):
+        """设置日志配置"""
+        logging.basicConfig(
+            level=getattr(logging, self.log_level.upper()),
+            format='%(asctime)s - %(levelname)s - %(message)s',
+            handlers=[
+                logging.StreamHandler(sys.stdout),
+                logging.FileHandler(f'{self.targets_dir}/targets_update.log')
+            ]
+        )
+        self.logger = logging.getLogger(__name__)
+    
+    def _load_exporter_config(self) -> Dict[str, Any]:
+        """
+        加载 exporter 配置文件
+        
+        Returns:
+            exporter 配置字典
+            
+        Raises:
+            FileNotFoundError: 配置文件不存在
+            json.JSONDecodeError: JSON 格式错误
+            ValueError: 配置格式错误
+        """
+        if not self.exporter_config_file:
+            raise FileNotFoundError("Exporter 配置文件路径未指定")
+        
+        if not self.exporter_config_file.exists():
+            raise FileNotFoundError(f"Exporter 配置文件不存在: {self.exporter_config_file}")
+        
+        try:
+            with open(self.exporter_config_file, 'r', encoding='utf-8') as f:
+                config = json.load(f)
+            
+            if not isinstance(config, dict):
+                raise ValueError("Exporter 配置文件必须是 JSON 对象格式")
+            
+            exporters = config.get('exporters', {})
+            if not isinstance(exporters, dict):
+                raise ValueError("exporters 配置必须是对象格式")
+            
+            if not exporters:
+                raise ValueError("exporters 配置不能为空")
+            
+            self.logger.info(f"成功加载 exporter 配置: {len(exporters)} 个 exporter")
+            return config
+            
+        except json.JSONDecodeError as e:
+            self.logger.error(f"Exporter 配置文件 JSON 解析错误: {e}")
+            raise
+        except Exception as e:
+            self.logger.error(f"加载 exporter 配置失败: {e}")
+            raise
+    
+    def load_nodes_config(self) -> List[Dict[str, Any]]:
+        """
+        加载节点配置文件
+        
+        Returns:
+            节点配置列表
+        """
+        try:
+            if not self.config_file.exists():
+                self.logger.warning(f"节点配置文件不存在: {self.config_file}")
+                return []
+            
+            with open(self.config_file, 'r', encoding='utf-8') as f:
+                nodes = json.load(f)
+            
+            if not isinstance(nodes, list):
+                self.logger.error("节点配置必须是数组格式")
+                return []
+            
+            self.logger.info(f"成功加载 {len(nodes)} 个节点配置")
+            return nodes
+            
+        except json.JSONDecodeError as e:
+            self.logger.error(f"JSON 解析错误: {e}")
+            return []
+        except Exception as e:
+            self.logger.error(f"加载节点配置失败: {e}")
+            return []
+    
+    def generate_targets(self, nodes: List[Dict[str, Any]], exporter_type: str) -> List[Dict[str, Any]]:
+        """
+        生成指定类型的 targets 配置
+        
+        Args:
+            nodes: 节点配置列表
+            exporter_type: exporter 类型 (dcgm, node)
+            
+        Returns:
+            targets 配置列表
+        """
+        if exporter_type not in self.exporter_configs:
+            self.logger.error(f"不支持的 exporter 类型: {exporter_type}")
+            return []
+        
+        config = self.exporter_configs[exporter_type]
+        targets = []
+        
+        for node in nodes:
+            # 验证必要字段
+            if not all(key in node for key in ['node_id', 'ip']):
+                self.logger.warning(f"节点配置缺少必要字段，跳过: {node}")
+                continue
+            
+            # 构建 target 地址
+            target_address = f"{node['ip']}:{config['port']}"
+            
+            # 构建上下文变量
+            context = {
+                'node_id': node['node_id'],
+                'ip': node['ip'],
+                'hostname': node.get('hostname', ''),
+                'user_id': node.get('user_id', ''),
+                'tag': self._join_labels(node.get('labels', []))
+            }
+            
+            # 使用模板生成标签
+            label_template = self.label_templates.get(exporter_type, {})
+            labels = {}
+            
+            for label_key, template_value in label_template.items():
+                if isinstance(template_value, str) and '{' in template_value:
+                    # 模板字符串，需要渲染
+                    labels[label_key] = self._render_label_template(template_value, context)
+                else:
+                    # 固定值
+                    labels[label_key] = template_value
+            
+            targets.append({
+                "targets": [target_address],
+                "labels": labels
+            })
+        
+        self.logger.info(f"为 {exporter_type} exporter 生成了 {len(targets)} 个 targets")
+        return targets
+    
+    def write_targets_file(self, targets: List[Dict[str, Any]], exporter_type: str) -> None:
+        """
+        写入 targets 文件
+        
+        Args:
+            targets: targets 配置列表
+            exporter_type: exporter 类型
+        """
+        filename = f"{exporter_type}_exporter.json"
+        filepath = self.targets_dir / filename
+        
+        try:
+            # 写入新文件
+            with open(filepath, 'w', encoding='utf-8') as f:
+                json.dump(targets, f, indent=2, ensure_ascii=False)
+            
+            self.logger.info(f"成功写入 targets 文件: {filepath}")
+            
+        except Exception as e:
+            self.logger.error(f"写入 targets 文件失败: {e}")
+            raise
+    
+    def update_all_targets(self) -> None:
+        """更新所有类型的 targets 文件"""
+        try:
+            # 加载节点配置
+            nodes = self.load_nodes_config()
+            
+            if not nodes:
+                self.logger.warning("没有找到任何节点配置")
+                return
+            
+            # 为每种 exporter 类型生成 targets
+            for exporter_type in self.exporter_configs.keys():
+                targets = self.generate_targets(nodes, exporter_type)
+                if targets:  # 只有当有 targets 时才写入文件
+                    self.write_targets_file(targets, exporter_type)
+            
+            self.logger.info("所有 targets 文件更新完成")
+            
+        except Exception as e:
+            self.logger.error(f"更新 targets 失败: {e}")
+            raise
+    
+    def _calculate_file_hash(self, file_path: Path) -> str:
+        """
+        计算文件内容的 MD5 哈希值
+        
+        Args:
+            file_path: 文件路径
+            
+        Returns:
+            文件内容的 MD5 哈希值
+        """
+        try:
+            with open(file_path, 'rb') as f:
+                content = f.read()
+                return hashlib.md5(content).hexdigest()
+        except Exception as e:
+            self.logger.error(f"计算文件哈希失败: {e}")
+            return ""
+    
+    def _render_label_template(self, template: str, context: Dict[str, str]) -> str:
+        """
+        渲染标签模板
+        
+        Args:
+            template: 模板字符串，如 "dcgm-exporter-{node_id}"
+            context: 上下文变量字典
+            
+        Returns:
+            渲染后的字符串
+        """
+        try:
+            return template.format(**context)
+        except KeyError as e:
+            self.logger.warning(f"模板渲染失败，缺少变量 {e}: {template}")
+            return template
+        except Exception as e:
+            self.logger.warning(f"模板渲染失败: {e}")
+            return template
+    
+    def _join_labels(self, labels_list: List[str]) -> str:
+        """
+        将 labels 数组拼接成一个字符串
+        
+        Args:
+            labels_list: 标签字符串数组
+            
+        Returns:
+            拼接后的字符串，用逗号分隔
+        """
+        if not labels_list:
+            return ""
+        
+        # 过滤掉空字符串和 None 值
+        valid_labels = [label.strip() for label in labels_list if label and label.strip()]
+        
+        return ",".join(valid_labels)
+    
+    def check_file_changed(self) -> bool:
+        """
+        检查配置文件是否发生变化
+        
+        Returns:
+            True 如果文件发生变化，False 否则
+        """
+        try:
+            if not self.config_file.exists():
+                return False
+            
+            # 计算当前文件内容哈希
+            current_hash = self._calculate_file_hash(self.config_file)
+            if not current_hash:
+                return False
+            
+            # 如果是第一次检查，记录哈希并触发更新
+            if self.last_content_hash is None:
+                self.last_content_hash = current_hash
+                self.logger.info("首次检查，记录文件内容哈希并触发初始更新")
+                return True
+            
+            # 比较内容哈希
+            if current_hash != self.last_content_hash:
+                self.last_content_hash = current_hash
+                self.logger.info("检测到文件内容变化")
+                return True
+            
+            return False
+            
+        except Exception as e:
+            self.logger.error(f"检查文件变化失败: {e}")
+            return False
+    
+    def run_daemon(self, check_interval: int = 30) -> None:
+        """
+        以守护进程模式运行，定期检查文件变化
+        
+        Args:
+            check_interval: 检查间隔（秒）
+        """
+        self.logger.info(f"启动守护进程模式，检查间隔: {check_interval}秒")
+        
+        try:
+            while True:
+                if self.check_file_changed():
+                    self.logger.info("检测到配置文件变化，开始更新 targets")
+                    self.update_all_targets()
+                else:
+                    self.logger.debug("配置文件无变化，跳过更新")
+                
+                time.sleep(check_interval)
+                
+        except KeyboardInterrupt:
+            self.logger.info("收到中断信号，正在退出...")
+        except Exception as e:
+            self.logger.error(f"守护进程运行错误: {e}")
+            raise
+
+
+def main():
+    """主函数"""
+    parser = argparse.ArgumentParser(description="Prometheus Targets 动态更新脚本 (精简版)")
+    parser.add_argument(
+        "--config", 
+        default="/private/argus/metric/prometheus/nodes.json",
+        help="节点配置文件路径 (默认: /private/argus/metric/prometheus/nodes.json)"
+    )
+    parser.add_argument(
+        "--targets-dir",
+        default="/private/argus/metric/prometheus/targets",
+        help="targets 文件输出目录 (默认: /private/argus/metric/prometheus/targets)"
+    )
+    parser.add_argument(
+        "--exporter-config",
+        default="/private/argus/metric/prometheus/exporter_config.json",
+        help="exporter 配置文件路径 (默认: /private/argus/metric/prometheus/exporter_config.json)"
+    )
+    parser.add_argument(
+        "--log-level",
+        choices=["DEBUG", "INFO", "WARNING", "ERROR"],
+        default="INFO",
+        help="日志级别 (默认: INFO)"
+    )
+    parser.add_argument(
+        "--daemon",
+        action="store_true",
+        help="以守护进程模式运行"
+    )
+    parser.add_argument(
+        "--check-interval",
+        type=int,
+        default=30,
+        help="守护进程模式下的检查间隔（秒，默认: 30）"
+    )
+    
+    args = parser.parse_args()
+    
+    try:
+        # 创建管理器
+        manager = PrometheusTargetsManager(
+            config_file=args.config,
+            targets_dir=args.targets_dir,
+            exporter_config_file=args.exporter_config,
+            log_level=args.log_level
+        )
+        
+        if args.daemon:
+            # 守护进程模式
+            manager.run_daemon(args.check_interval)
+        else:
+            # 单次执行模式
+            manager.update_all_targets()
+            print("成功更新所有 exporter targets")
+            
+    except Exception as e:
+        print(f"错误: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()