i am trying to follow the following tutorial to deploy my flask app. https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-gunicorn-and-nginx-on-ubuntu-18-04
i am seeing the error, current command vanished from the unit file, execution of the command list wont be resumed, when i check systemctl of the gunicorn i just configured.
and this is my unit file.
thank you in advance
You have to stop and disable the service:
sudo systemctl stop myproject
sudo systemctl disable myproject
I know I'm late in replying, but this is a really weird thing that seems to happen once in a while.
The fix is obscure: you will have to manually edit a system file, so be extra-careful when doing that. The file in question is /usr/lib/systemd/system/initrd-switch-root.service.
As root, open that file with your favourite editor, and scroll down to the line that says:
ExecStart=systemctl --no-block switch-root /sysroot
and change it to
ExecStart=/usr/bin/systemctl --no-block switch-root /sysroot
Then run systemctl daemon-reload, and you should be able to start your unit.
In my case (a completely different application), I have noticed that the error still lingers, but at least the application truly starts...
Source: https://github.com/systemd/systemd/issues/16076
Note that the above-mentioned fix was applied to systemd version 246 or 247 or so, back in mid-2020. However, Ubuntu 20.04.3 LTS, as of today (September 2021), still uses systemd 245. Your own Ubuntu 18.04 is very likely using an even earlier version.