Issue 1:
Checklist

I have verified that the issue exists against the main branch of Celery.

This has already been asked to the discussions forum first.

I have read the relevant section in the

contribution guide

on reporting bugs.

I have checked the issues list

for similar or identical bug reports.

I have checked the pull requests list

for existing proposed fixes.

I have checked the commit log

to find out if the bug was already fixed in the main branch.

I have included all related issues and possible duplicate issues

in this issue (If there are none, check this box anyway).

Mandatory Debugging Information

I have included the output of celery -A proj report in the issue.

(if you are not able to do this, then at least specify the Celery

version affected).

I have verified that the issue exists against the main branch of Celery.

I have included the contents of pip freeze in the issue.

I have included all the versions of all the external dependencies required

to reproduce this bug.

Optional Debugging Information

I have tried reproducing the issue on more than one Python version

and/or implementation.

I have tried reproducing the issue on more than one message broker and/or

result backend.

I have tried reproducing the issue on more than one version of the message

broker and/or result backend.

I have tried reproducing the issue on more than one operating system.

I have tried reproducing the issue on more than one workers pool.

I have tried reproducing the issue with autoscaling, retries,

ETA/Countdown & rate limits disabled.

I have tried reproducing the issue after downgrading

and/or upgrading Celery and its dependencies.

Related Issues and Possible Duplicates

Related Issues

None

Possible Duplicates

None

Environment & Settings

Celery version:

celery report Output:

Steps to Reproduce

Required Dependencies

Minimal Python Version: N/A or Unknown

Minimal Celery Version: N/A or Unknown

Minimal Kombu Version: N/A or Unknown

Minimal Broker Version: N/A or Unknown

Minimal Result Backend Version: N/A or Unknown

Minimal OS and/or Kernel Version: N/A or Unknown

Minimal Broker Client Version: N/A or Unknown

Minimal Result Backend Client Version: N/A or Unknown

Python Packages

pip freeze Output:

Other Dependencies

N/A

Minimally Reproducible Test Case

Expected Behavior

Actual Behavior

Issue 2:
Checklist

I have verified that the issue exists against the master branch of Celery.

I have read the relevant section in the

contribution guide

on reporting bugs.

I have checked the issues list

for similar or identical bug reports.

I have checked the pull requests list

for existing proposed fixes.

I have checked the commit log

to find out if the bug was already fixed in the master branch.

I have included all related issues and possible duplicate issues

in this issue (If there are none, check this box anyway).

Mandatory Debugging Information

I have included the output of celery -A proj report in the issue.

(if you are not able to do this, then at least specify the Celery

version affected).

I have verified that the issue exists against the master branch of Celery.

I have included the contents of pip freeze in the issue.

I have included all the versions of all the external dependencies required

to reproduce this bug.

Optional Debugging Information

I have tried reproducing the issue on more than one Python version

and/or implementation.

I have tried reproducing the issue on more than one message broker and/or

result backend.

I have tried reproducing the issue on more than one version of the message

broker and/or result backend.

I have tried reproducing the issue on more than one operating system.

I have tried reproducing the issue on more than one workers pool.

I have tried reproducing the issue with autoscaling, retries,

ETA/Countdown & rate limits disabled.

I have tried reproducing the issue after downgrading

and/or upgrading Celery and its dependencies.

Related Issues and Possible Duplicates

Related Issues

None

Possible Duplicates

None

Environment & Settings

Celery version:

celery report Output:

software -> celery:5.0.1 (singularity) kombu:5.0.2 py:3.8.3
billiard:3.6.3.0 redis:3.5.3
platform -> system:Linux arch:64bit, ELF
kernel version:5.4.0-48-generic imp:CPython
loader -> celery.loaders.app.AppLoader
settings -> transport:redis results:disabled

Steps to Reproduce

Required Dependencies

Minimal Python Version: N/A or Unknown

Minimal Celery Version: 5.0.1

Minimal Kombu Version: N/A or Unknown

Minimal Broker Version: N/A or Unknown

Minimal Result Backend Version: N/A or Unknown

Minimal OS and/or Kernel Version: N/A or Unknown

Minimal Broker Client Version: N/A or Unknown

Minimal Result Backend Client Version: N/A or Unknown

Python Packages

pip freeze Output:

Other Dependencies

N/A

Minimally Reproducible Test Case

$ celery multi start normal low --app=service.celery:app --logfile=/tmp/celery/celery-%n%I.log --queues:normal=normal --queues:low=low --concurrency:normal=2 --concurrency:low=1 --pidfile=/tmp/celery/celeryd-%n.pid
celery multi v5.0.1 (singularity)
> Starting nodes...
> normal@dell: OK
> low@dell: OK

Expected Behavior

Celery 4.4.7 behavior

$ ls -l /tmp/celery
-rw-r--r-- 1 www-data www-data 6 Oct 19 14:39 celeryd-low.pid
-rw-r--r-- 1 www-data www-data 6 Oct 19 14:39 celeryd-normal.pid
-rw-rw-r-- 1 www-data www-data 80 Oct 19 14:39 celery-low-1.log
-rw-rw-r-- 1 www-data www-data 316 Oct 19 14:39 celery-low.log
-rw-rw-r-- 1 www-data www-data 80 Oct 19 14:39 celery-normal-1.log
-rw-rw-r-- 1 www-data www-data 80 Oct 19 14:39 celery-normal-2.log
-rw-rw-r-- 1 www-data www-data 316 Oct 19 14:39 celery-normal.log

Actual Behavior

$ ls -l /tmp/celery
-rw-r--r-- 1 www-data www-data 6 Oct 19 14:39 celeryd-low.pid
-rw-r--r-- 1 www-data www-data 6 Oct 19 14:39 celeryd-normal.pid
-rw-rw-r-- 1 www-data www-data 80 Oct 19 14:39 celery-low-1.log
-rw-rw-r-- 1 www-data www-data 0 Oct 19 14:39 celery-low%I.log
-rw-rw-r-- 1 www-data www-data 316 Oct 19 14:39 celery-low.log
-rw-rw-r-- 1 www-data www-data 80 Oct 19 14:39 celery-normal-1.log
-rw-rw-r-- 1 www-data www-data 80 Oct 19 14:39 celery-normal-2.log
-rw-rw-r-- 1 www-data www-data 0 Oct 19 14:39 celery-normal%I.log
-rw-rw-r-- 1 www-data www-data 316 Oct 19 14:39 celery-normal.log