I was demonizing celery on Ubuntu by following the user guide and this question on SO. Briefly,
Download the init-script celeryd from celery github repo.
Save the configuration file from the user guide as celeryd.conf (to be distinguished form the init-script celeryd above) and edit the settings.
I have an extra step of transferring the above two files from a Windows machine to Ubuntu.
Then
sudo cp celeryd /etc/init.d/celeryd
sudo chmod +x /etc/init.d/celeryd
sudo cp celeryd.conf /etc/default/celeryd
sudo useradd -N -M --system -s /bin/bash celery
sudo addgroup celery
sudo adduser celery celery
sudo mkdir -p /var/run/celery
sudo mkdir -p /var/log/celery
sudo chown -R celery:celery /var/run/celery
sudo chown -R celery:celery /var/log/celery
However, when running
sudo /etc/init.d/celeryd start
It throws the error:
not found/celeryd: 9: /etc/default/celeryd:
The number 9 is the first non-comment line in the configuration file /etc/default/celeryd.
What is going on? How should I fix it? Thanks.
The reason is that the celeryd configuration file was edited on Windows and transferred to Ubuntu, therefore, it has '\r\n' as the line ending.
The error message
not found/celeryd: 9: /etc/default/celeryd:
was not informative. But searching it landed me on a post that pointed me to the right direction. Removing '\r' from the configuration file /etc/default/celeryd fixes the problem.
So:
cp /etc/default/celeryd celeryd
cat celeryd | tr -d '\r' > celeryd
sudo cp celeryd /etc/default/celeryd