创建运行.sh的deamon

Question

我已经玩了一小段时间了，但是我仍然坚持创建一个服务来运行一个脚本。我试图运行的脚本如下所示。

#!/bin/sh
while true

do

sudo bbb-record --rebuildall

sleep 300
done

我尝试为这个程序创建一个守护进程，运行如下：

[Unit]
Description=bbb-rebuild
[Service]
ExecStart=/home/sysadmin/rebuild
Restart=always

[Install]
WantedBy=multi-user.target 

exit=0 

我得到了错误信息

==== AUTHENTICATION COMPLETE ===
Failed to start rebuild.service: Unit rebuild.service is not loaded properly: Invalid argument.
See system logs and 'systemctl status rebuild.service' for details.

after checking status
Apr 22 16:46:55 bbb2 systemd[1]: rebuild.service: Unit entered failed state.
Apr 22 16:46:55 bbb2 systemd[1]: rebuild.service: Failed with result 'exit-code'.
Apr 22 16:46:55 bbb2 systemd[1]: rebuild.service: Service hold-off time over, scheduling restart.
Apr 22 16:46:55 bbb2 systemd[1]: Stopped bbb-rebuild.
Apr 22 16:46:55 bbb2 systemd[1]: rebuild.service: Start request repeated too quickly.
Apr 22 16:46:55 bbb2 systemd[1]: Failed to start bbb-rebuild.
Apr 22 16:46:55 bbb2 systemd[1]: rebuild.service: Unit entered failed state.
Apr 22 16:46:55 bbb2 systemd[1]: rebuild.service: Failed with result 'start-limit-hit'.
Apr 22 16:47:22 bbb2 systemd[1]: [/etc/systemd/system/rebuild.service:12] Missing '='.

Answer 1

您最好使用系统定时器来实现这一点。

创建一个名为systemd服务rebuild.timer的计时器

# nano /etc/systemd/system/rebuild.timer

[Unit]
Description=Start script every hour

[Timer]
OnCalendar=hourly

[Install]
WantedBy=timers.target

将脚本编辑为以下内容

#!/bin/sh
bbb-record --rebuildall

确保脚本是可运行的chmod +x /home/sysadmin/rebuild

编辑系统d服务以删除restart=always和exit 0

[Unit]
Description=bbb-rebuild

[Service]
ExecStart=/home/sysadmin/rebuild

[Install]
WantedBy=multi-user.target 

然后，只需使用systemctl enable rebuild.timer启用系统定时器即可。

然后用systemctl status rebuild.timer检查计时器是否启用。