FieldStation42监控告警:实时监控与自动告警系统
🎯 概述
还在为FieldStation42电视模拟器的运行状态担忧吗?担心播放中断、系统故障却无法及时发现?FieldStation42内置了完善的监控告警系统,通过状态Socket(套接字)、API接口和系统监控功能,为您提供全方位的实时监控和自动告警能力。
读完本文,您将掌握:
- ✅ FieldStation42状态监控的核心机制
- ✅ 实时状态Socket的详细解析和使用方法
- ✅ 系统资源监控API的完整调用指南
- ✅ 自定义告警规则的配置与实现
- ✅ 故障自动恢复和状态推送的最佳实践
📊 FieldStation42监控架构
🔍 核心监控功能详解
1. 实时状态Socket监控
FieldStation42通过状态Socket文件实时推送播放状态信息,这是最核心的监控机制:
# 状态Socket文件路径(默认)
status_socket = "/tmp/fs42_status.socket"
# 状态信息JSON格式示例
{
"status": "playing", # 播放状态:playing/stuck/stopped
"network_name": "CBS", # 电视台名称
"channel_number": 5, # 频道号
"title": "Evening News", # 当前节目标题
"timestamp": "2024-01-15T19:30:45", # 时间戳
"duration": "00:30:00/01:00:00", # 播放进度/总时长
"file_path": "/content/CBS/evening_news.mp4" # 文件路径
}
状态类型说明
| 状态值 | 含义 | 触发条件 | 严重级别 |
|---|---|---|---|
playing | 正常播放 | 节目正常播放 | 正常 |
stuck | 播放卡住 | 连续2秒无法播放 | 警告 |
stopped | 播放停止 | 用户停止或系统关闭 | 信息 |
2. 系统资源监控API
FieldStation42提供完整的RESTful API接口监控系统资源:
# 获取系统信息
curl http://localhost:8000/player/info
# 响应示例
{
"temperature_c": 45.2,
"temperature_f": 113,
"temp_source": "vcgencmd",
"memory": {
"total_gb": 3.8,
"available_gb": 2.1,
"used_gb": 1.7,
"used_percent": 44.7
},
"cpu": {
"cores": 4,
"load_1min": 0.8,
"load_5min": 0.6,
"load_15min": 0.5,
"load_percent": 20.0
},
"system": {
"platform": "Linux",
"architecture": "aarch64",
"hostname": "raspberrypi"
}
}
监控指标阈值建议
| 指标 | 正常范围 | 警告阈值 | 危险阈值 | 恢复建议 |
|---|---|---|---|---|
| CPU温度 | < 60°C | 60-70°C | > 70°C | 检查散热 |
| 内存使用率 | < 70% | 70-85% | > 85% | 清理内存 |
| CPU负载 | < 80% | 80-90% | > 90% | 优化进程 |
3. 播放状态API监控
# 获取当前播放状态
curl http://localhost:8000/player/status
# 检查命令队列连接状态
curl http://localhost:8000/player/status/queue_connected
🚨 告警系统实现方案
方案一:基于Shell脚本的简易监控
#!/bin/bash
# fs42_monitor.sh
STATUS_SOCKET="/tmp/fs42_status.socket"
ALERT_EMAIL="admin@example.com"
MAX_STUCK_TIME=300 # 5分钟
# 监控状态变化
monitor_status() {
while true; do
if [[ -f "$STATUS_SOCKET" ]]; then
status_data=$(cat "$STATUS_SOCKET" 2>/dev/null)
if [[ -n "$status_data" ]]; then
status=$(echo "$status_data" | jq -r '.status')
case "$status" in
"stuck")
echo "ALERT: Player stuck at $(date)"
send_alert "Player Stuck" "FieldStation42 player is stuck"
;;
"stopped")
echo "INFO: Player stopped at $(date)"
;;
esac
fi
fi
sleep 10
done
}
# 发送告警
send_alert() {
subject="$1"
message="$2"
echo "$message" | mail -s "$subject" "$ALERT_EMAIL"
}
monitor_status
方案二:Python高级监控服务
# advanced_monitor.py
import json
import time
import requests
import logging
from datetime import datetime, timedelta
class FieldStationMonitor:
def __init__(self, status_socket, api_url="http://localhost:8000"):
self.status_socket = status_socket
self.api_url = api_url
self.stuck_start_time = None
self.setup_logging()
def setup_logging(self):
logging.basicConfig(
level=logging.INFO,
format='%(asctime)s - %(levelname)s - %(message)s',
handlers=[
logging.FileHandler('/var/log/fs42_monitor.log'),
logging.StreamHandler()
]
)
def read_status_socket(self):
try:
with open(self.status_socket, 'r') as f:
return json.load(f)
except (FileNotFoundError, json.JSONDecodeError):
return None
def check_system_health(self):
try:
response = requests.get(f"{self.api_url}/player/info", timeout=5)
if response.status_code == 200:
return response.json()
except requests.RequestException:
return None
def evaluate_health(self, system_info):
alerts = []
# CPU温度检查
if system_info.get('temperature_c', 0) > 70:
alerts.append(f"CPU温度过高: {system_info['temperature_c']}°C")
# 内存使用检查
memory = system_info.get('memory', {})
if memory.get('used_percent', 0) > 85:
alerts.append(f"内存使用率过高: {memory['used_percent']}%")
# CPU负载检查
cpu = system_info.get('cpu', {})
if cpu.get('load_percent', 0) > 90:
alerts.append(f"CPU负载过高: {cpu['load_percent']}%")
return alerts
def monitor_loop(self):
while True:
# 检查播放状态
status = self.read_status_socket()
if status and status.get('status') == 'stuck':
if self.stuck_start_time is None:
self.stuck_start_time = datetime.now()
logging.warning("播放器卡住检测")
else:
stuck_duration = (datetime.now() - self.stuck_start_time).total_seconds()
if stuck_duration > 300: # 5分钟
logging.error("播放器长时间卡住,需要干预")
self.trigger_recovery()
else:
self.stuck_start_time = None
# 检查系统健康
system_info = self.check_system_health()
if system_info:
alerts = self.evaluate_health(system_info)
for alert in alerts:
logging.warning(alert)
self.send_alert(alert)
time.sleep(30)
def trigger_recovery(self):
try:
# 尝试重启播放器
requests.post(f"{self.api_url}/commands/stop", timeout=5)
logging.info("已发送停止命令,等待系统自动重启")
except requests.RequestException:
logging.error("无法连接到API服务器进行恢复")
def send_alert(self, message):
# 实现告警发送逻辑(邮件、短信、Webhook等)
print(f"ALERT: {message}")
if __name__ == "__main__":
monitor = FieldStationMonitor("/tmp/fs42_status.socket")
monitor.monitor_loop()
方案三:Docker容器化监控
# Dockerfile for FS42 Monitor
FROM python:3.9-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install -r requirements.txt
COPY advanced_monitor.py .
COPY config.yaml .
CMD ["python", "advanced_monitor.py"]
# config.yaml
monitoring:
status_socket: "/tmp/fs42_status.socket"
api_url: "http://host.docker.internal:8000"
check_interval: 30
alert_thresholds:
cpu_temp: 70
memory_usage: 85
cpu_load: 90
stuck_time: 300
alerts:
email:
enabled: true
smtp_server: "smtp.example.com"
smtp_port: 587
username: "alert@example.com"
password: "password"
recipients: ["admin@example.com"]
webhook:
enabled: true
url: "https://hooks.slack.com/services/XXX"
sms:
enabled: false
🛠️ 告警规则配置表
| 告警类型 | 触发条件 | 严重级别 | 自动恢复动作 | 通知方式 |
|---|---|---|---|---|
| 播放卡住 | status=stuck持续>5min | 高 | 重启播放器 | 邮件+短信 |
| 高温告警 | CPU温度>70°C | 高 | 降低负载/关机 | 邮件+Webhook |
| 内存不足 | 使用率>85% | 中 | 清理缓存 | 邮件 |
| 高负载 | CPU负载>90% | 中 | 调整优先级 | 邮件 |
| API不可用 | 连接超时 | 低 | 重试连接 | 日志记录 |
📈 监控仪表板实现
使用Grafana监控面板
{
"dashboard": {
"title": "FieldStation42 Monitoring",
"panels": [
{
"title": "播放状态",
"type": "stat",
"targets": [{
"expr": "fs42_status{status=\"playing\"}",
"legendFormat": "正常播放"
}]
},
{
"title": "系统温度",
"type": "graph",
"targets": [{
"expr": "fs42_temperature_c",
"legendFormat": "CPU温度"
}]
}
]
}
}
Prometheus监控配置
# prometheus.yml
scrape_configs:
- job_name: 'fieldstation42'
static_configs:
- targets: ['localhost:8000']
metrics_path: '/player/info'
params:
format: ['prometheus']
🔧 故障排查与恢复
常见故障处理流程
自动化恢复脚本
#!/bin/bash
# auto_recovery.sh
# 检查播放状态
check_status() {
local status_file="/tmp/fs42_status.socket"
if [[ -f "$status_file" ]]; then
status=$(jq -r '.status' "$status_file" 2>/dev/null)
if [[ "$status" == "stuck" ]]; then
# 检查卡住时间
timestamp=$(jq -r '.timestamp' "$status_file")
stuck_time=$(date -d "$timestamp" +%s)
current_time=$(date +%s)
if (( current_time - stuck_time > 300 )); then
return 1 # 需要恢复
fi
fi
fi
return 0 # 状态正常
}
# 执行恢复
perform_recovery() {
echo "$(date): 执行FieldStation42恢复操作"
# 优雅停止
curl -X POST http://localhost:8000/commands/stop || true
sleep 5
# 强制终止残留进程
pkill -f "python.*field_player" || true
pkill -f "python.*station_42" || true
sleep 2
# 重新启动
cd /path/to/FieldStation42
nohup python field_player.py >> /var/log/fs42.log 2>&1 &
echo "$(date): 恢复操作完成"
}
# 主监控循环
while true; do
if ! check_status; then
perform_recovery
fi
sleep 60
done
🎯 最佳实践总结
- 多层监控策略:结合状态Socket、API监控和系统指标,实现全方位监控
- 分级告警:根据严重程度设置不同级别的告警和通知方式
- 自动化恢复:针对常见故障实现自动恢复机制,减少人工干预
- 历史记录:保存监控日志和故障记录,便于后续分析和优化
- 性能基线:建立系统性能基线,及时发现异常趋势
通过本文介绍的监控告警系统,您可以确保FieldStation42电视模拟器7×24小时稳定运行,及时发现并处理各种故障,为用户提供无缝的怀旧电视体验。
提示:建议定期检查监控系统的运行状态,并根据实际运行情况调整告警阈值和恢复策略。
创作声明:本文部分内容由AI辅助生成(AIGC),仅供参考



