设置ctp_md_client作为后台服务开机自启动

：
ubuntu@VM-0-11-ubuntu:~$ sudo nano /etc/systemd/system/ctp_md_client.service

[Unit]
Description=CTP Market Data Client

[Service]
Type=simple
User=ubuntu
WorkingDirectory=/home/ubuntu/ctpubuntu
ExecStart=/home/ubuntu/ctpubuntu/ctp_md_client
Environment="LD_LIBRARY_PATH=/home/ubuntu/ctpubuntu/ctpapi"
Restart=always

[Install]
WantedBy=multi-user.target



ubuntu@VM-0-11-ubuntu:~$ sudo systemctl daemon-reload
ubuntu@VM-0-11-ubuntu:~$ sudo systemctl start ctp_md_client
ubuntu@VM-0-11-ubuntu:~$ sudo systemctl enable ctp_md_client
Created symlink /etc/systemd/system/multi-user.target.wants/ctp_md_client.service → /etc/systemd/system/ctp_md_client.service.
ubuntu@VM-0-11-ubuntu:~$ service ctp_md_client status
● ctp_md_client.service - CTP Market Data Client
     Loaded: loaded (/etc/systemd/system/ctp_md_client.service; enabled; preset: enabled)
     Active: active (running) since Sun 2025-06-08 00:08:31 CST; 40s ago
   Main PID: 1286810 (ctp_md_client)
      Tasks: 3 (limit: 1964)
     Memory: 2.8M (peak: 3.0M)
        CPU: 850ms
     CGroup: /system.slice/ctp_md_client.service
             └─1286810 /home/ubuntu/ctpubuntu/ctp_md_client

Jun 08 00:08:31 VM-0-11-ubuntu systemd[1]: Started ctp_md_client.service - CTP Market Data Client.
Jun 08 00:08:31 VM-0-11-ubuntu ctp_md_client[1286810]: tcp://180.168.146.187:10212
Jun 08 00:08:31 VM-0-11-ubuntu ctp_md_client[1286810]: CTP行情客户端已启动...
ubuntu@VM-0-11-ubuntu:~$ sudo reboot

Broadcast message from root@VM-0-11-ubuntu on pts/3 (Sun 2025-06-08 00:09:48 CST):

The system will reboot now!

ubuntu@VM-0-11-ubuntu:~$
Using username "ubuntu".
Authenticating with public key "imported-openssh-key"
Welcome to Ubuntu 24.04.2 LTS (GNU/Linux 6.8.0-60-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/pro

 System information as of Sun Jun  8 12:12:16 AM CST 2025

  System load:  0.34               Processes:             126
  Usage of /:   43.0% of 49.10GB   Users logged in:       0
  Memory usage: 14%                IPv4 address for eth0: 10.3.0.11
  Swap usage:   0%

 * Strictly confined Kubernetes makes edge and IoT secure. Learn how MicroK8s
   just raised the bar for easy, resilient and secure K8s cluster deployment.

   https://ubuntu.com/engage/secure-kubernetes-at-the-edge

Expanded Security Maintenance for Applications is not enabled.

0 updates can be applied immediately.

Enable ESM Apps to receive additional future security updates.
See https://ubuntu.com/esm or run: sudo pro status


Last login: Sat Jun  7 22:15:31 2025 from 36.6.2.38
ubuntu@VM-0-11-ubuntu:~$ service ctp_md_client status
● ctp_md_client.service - CTP Market Data Client
     Loaded: loaded (/etc/systemd/system/ctp_md_client.service; enabled; preset: enabled)
     Active: active (running) since Sun 2025-06-08 00:10:10 CST; 2min 13s ago
   Main PID: 917 (ctp_md_client)
      Tasks: 3 (limit: 1960)
     Memory: 3.9M (peak: 7.6M)
        CPU: 3.131s
     CGroup: /system.slice/ctp_md_client.service
             └─917 /home/ubuntu/ctpubuntu/ctp_md_client

Jun 08 00:10:10 VM-0-11-ubuntu systemd[1]: Started ctp_md_client.service - CTP Market Data Client.
Jun 08 00:10:10 VM-0-11-ubuntu ctp_md_client[917]: tcp://180.168.146.187:10212
Jun 08 00:10:10 VM-0-11-ubuntu ctp_md_client[917]: CTP行情客户端已启动...
ubuntu@VM-0-11-ubuntu:~$








将 ctp_md_client 设置为系统服务后，原本打印到终端的输出会根据服务配置重定向。以下是完整的解决方案：

一、输出流向说明
输出类型	默认去向	推荐处理方式
标准输出(stdout)	丢失	重定向到日志文件
标准错误(stderr)	丢失	重定向到日志文件
系统日志	不记录（除非主动调用logger）	配置systemd捕获
二、创建Systemd服务文件
创建 /etc/systemd/system/ctp_md.service：

ini
[Unit]
Description=CTP Market Data Client
After=network.target

[Service]
Type=simple
User=ctpuser  # 建议创建专用用户
WorkingDirectory=/path/to/ctp
ExecStart=/path/to/ctp_md_client -c /etc/ctp/config.ini

# 日志重定向配置
StandardOutput=file:/var/log/ctp/md.log
StandardError=file:/var/log/ctp/md_error.log
# 或使用journald：
# StandardOutput=journal
# StandardError=journal

# 自动重启配置
Restart=always
RestartSec=30

[Install]
WantedBy=multi-user.target
三、关键配置详解
1. 日志文件管理
bash
# 创建日志目录
sudo mkdir -p /var/log/ctp
sudo chown ctpuser:ctpuser /var/log/ctp

# 日志轮转配置 (/etc/logrotate.d/ctp)
/var/log/ctp/*.log {
    daily
    rotate 7
    missingok
    notifempty
    compress
    delaycompress
    create 0640 ctpuser ctpuser
}
2. 环境变量传递
ini
[Service]
Environment="LD_LIBRARY_PATH=/path/to/ctpapi"
Environment="CTP_LOG_LEVEL=debug"
3. 资源限制
ini
[Service]
LimitNOFILE=65535
LimitMEMLOCK=infinity
四、服务管理命令
bash
# 重载服务配置
sudo systemctl daemon-reload

# 启用开机启动
sudo systemctl enable ctp_md

# 启动服务
sudo systemctl start ctp_md

# 查看状态
sudo systemctl status ctp_md

# 查看日志（如果使用journald）
journalctl -u ctp_md -f
五、日志查看方式
1. 直接查看日志文件
bash
tail -f /var/log/ctp/md.log
tail -f /var/log/ctp/md_error.log
2. 通过journald查看
bash
# 实时查看
journalctl -u ctp_md -f

# 按时间筛选
journalctl -u ctp_md --since "2023-06-01" --until "2023-06-02"

# 导出完整日志
journalctl -u ctp_md > ctp_md_full.log
六、高级调试技巧
1. 临时输出到控制台
ini
[Service]
StandardOutput=tty
StandardError=tty
TTYPath=/dev/console  # 需要配合以下命令
sudo systemctl enable getty@tty1.service
2. 多日志分流
bash
ExecStart=/bin/sh -c '/path/to/ctp_md_client 2>&1 | tee -a /var/log/ctp/full.log | logger -t ctp_md'
3. 核心转储配置
bash
# 在服务文件中添加
LimitCORE=infinity
# 然后执行
sudo sysctl -w kernel.core_pattern=/var/coredumps/core-%e-%p-%t
七、常见问题处理
1. 无日志输出
检查项：

bash
# 确认服务用户有写权限
sudo -u ctpuser touch /var/log/ctp/test.log

# 检查SELinux
sudo ausearch -m avc -ts recent | grep ctp
2. 日志文件过大
解决方案：

ini
[Service]
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=ctp_md
3. 服务启动失败
调试命令：

bash
sudo systemctl status ctp_md -l
sudo journalctl -xe
八、生产环境建议
结构化日志

cpp
// 在代码中使用JSON格式日志
void OnRtnDepthMarketData(...) {
    std::cout << R"({"time":")" << GetCurrentTime() << R"(","instrument":")" 
              << pDepthMarketData->InstrumentID << R"("})" << std::endl;
}
监控集成

bash
# Prometheus监控示例
echo 'ctp_status{service="md"} 1' | curl --data-binary @- http://monitor:9091/metrics/job/ctp
报警配置

bash
# 检测服务挂掉
sudo apt install monit
# /etc/monit/conf.d/ctp
check process ctp_md with pidfile /run/ctp_md.pid
  start program = "/bin/systemctl start ctp_md"
  stop program = "/bin/systemctl stop ctp_md"
  if not exist then alert