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如何在 CentOS 上的特定时间启动/停止 python 脚本作为服务？

tag-icon • tag-icon centos systemd python services scheduling
如何在 CentOS 上的特定时间启动/停止 python 脚本作为服务？

我正在尝试在运行 CentOS 7 的 VPS 上放置一个 python 脚本，该脚本从 Web 服务在线抓取一些股票数据。我想要做的是将这个脚本设置为在特定时间启动/停止的操作系统服务。

我该怎么做？

编辑：这是结果systemctl status python-script

   Loaded: loaded (/etc/systemd/system/python-script.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Sat 2020-05-16 01:11:50 +0430; 15h ago
 Main PID: 854 (code=exited, status=1/FAILURE)

May 16 01:11:43 boiga.server1.more.com systemd[1]: Started Python Script Serv...
May 16 01:11:50 boiga.server1.more.com python3[854]: Traceback (most recent c...
May 16 01:11:50 boiga.server1.more.com python3[854]: File "/root/script.py", ...
May 16 01:11:50 boiga.server1.more.com python3[854]: await (websocketConnect())
May 16 01:11:50 boiga.server1.more.com python3[854]: NameError: name 'await' ...
May 16 01:11:50 boiga.server1.more.com systemd[1]: python-script.service: mai...
May 16 01:11:50 boiga.server1.more.com systemd[1]: Unit python-script.service...
May 16 01:11:50 boiga.server1.more.com systemd[1]: python-script.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

答案1

您可以通过创建服务文件来创建运行此 python 脚本的服务/etc/systemd/system/python-script.service，如下例所示：

[Unit]
Description=Python Script Service
After=network.target

[Service]
Type=simple
User=root
ExecStart=/usr/bin/python3 /root/script.py
Restart=on-abort


[Install]
WantedBy=multi-user.target

然后运行systemctl daemon-reload以重新加载 systemd 并systemctl enable python-script启用该服务。

运行该服务应该会给出如下结果：

systemctl status python-script
● python-script.service - Python Script Service
   Loaded: loaded (/etc/systemd/system/python-script.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Wed 2020-05-13 23:10:30 CEST; 2s ago
  Process: 27405 ExecStart=/usr/bin/python3 /root/script.py (code=exited, status=0/SUCCESS)
 Main PID: 27405 (code=exited, status=0/SUCCESS)

May 13 23:10:30 server1 systemd[1]: Started Python Script Service.
May 13 23:10:30 server1 python3[27405]: Hello World!

关于计划服务的启动/停止，您可以使用 crontab 来实现

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