我的一些未解决疑难

Systemd和Docker的冲突

试图使用命令重启系统时，报错信息

root@ubuntuMC1:/# reboot
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
Failed to talk to init daemon: Host is down

root@ubuntuMC1:/# shutdown -r now
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
Failed to talk to init daemon: Host is down

试图使用systemd服务设置开机自启动应用时，已经写好.service文件，试图更新配置文件时报错

root@ubuntuMC1:/etc/systemd/system# systemctl daemon-reload
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down

关于rc*.d文件的困惑

这个问题在我试图设置开机自启动应用时遇到了

如上图所示，我的etc文件夹内的rc*.d十分奇怪。

Cron的启动运行悖论

crontab里的@reboot规则需要依赖于cron service才能运行

但是开机状态下cron service并不能运行