Taragolis opened a new issue, #23871:
URL: https://github.com/apache/airflow/issues/23871
### Apache Airflow version
2.3.0 (latest released)
### What happened
Standalone DagProcessor which run in Apache Airflow Production Docker Image
failed with error
```
airflow-dag-processor_1 |
airflow-dag-processor_1 | Traceback (most recent call last):
airflow-dag-processor_1 | File "/home/airflow/.local/bin/airflow", line
8, in <module>
airflow-dag-processor_1 | sys.exit(main())
airflow-dag-processor_1 | File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/__main__.py", line
38, in main
airflow-dag-processor_1 | args.func(args)
airflow-dag-processor_1 | File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/cli/cli_parser.py",
line 51, in command
airflow-dag-processor_1 | return func(*args, **kwargs)
airflow-dag-processor_1 | File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/utils/cli.py", line
99, in wrapper
airflow-dag-processor_1 | return f(*args, **kwargs)
airflow-dag-processor_1 | File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/cli/commands/dag_processor_command.py",
line 80, in dag_processor
airflow-dag-processor_1 | manager.start()
airflow-dag-processor_1 | File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/dag_processing/manager.py",
line 475, in start
airflow-dag-processor_1 | os.setpgid(0, 0)
airflow-dag-processor_1 | PermissionError: [Errno 1] Operation not permitted
```
This error not happen if directly run in host system by `airflow
dag-processor`
Seems like this issue happen because when we run in Apache Airflow
Production Docker Image `airflow` process is session leader, and according to
`man setpgid`
```
ERRORS
setpgid() will fail and the process group will not be altered if:
[EPERM] The process indicated by the pid argument is a
session leader.
```
### What you think should happen instead
`dag-processor` should start in docker without error
### How to reproduce
1. Use simple docker-compose file which use official Airflow 2.3.0 image
```yaml
# docker-compose-dag-processor.yaml
version: '3'
volumes:
postgres-db-volume:
aiflow-logs-volume:
x-airflow-common:
&airflow-common
image: apache/airflow:2.3.0-python3.7
environment:
AIRFLOW__SCHEDULER__STANDALONE_DAG_PROCESSOR: 'True'
AIRFLOW__CORE__SQL_ALCHEMY_CONN:
postgresql+psycopg2://airflow:insecurepassword@postgres/airflow
volumes:
- aiflow-logs-volume:/opt/airflow/logs
- ${PWD}/dags:/opt/airflow/dags
user: "${AIRFLOW_UID:-50000}:0"
extra_hosts:
- "host.docker.internal:host-gateway"
services:
postgres:
image: postgres:13
environment:
POSTGRES_USER: airflow
POSTGRES_PASSWORD: insecurepassword
POSTGRES_DB: airflow
ports:
- 55432:5432
volumes:
- postgres-db-volume:/var/lib/postgresql/data
healthcheck:
test: ["CMD", "pg_isready", "-U", "airflow"]
interval: 5s
retries: 5
restart: unless-stopped
airflow-upgrade-db:
<<: *airflow-common
command: ["db", "upgrade"]
depends_on:
postgres:
condition: service_healthy
airflow-dag-processor:
<<: *airflow-common
command: dag-processor
restart: unless-stopped
depends_on:
airflow-upgrade-db:
condition: service_completed_successfully
```
2. `docker-compose -f docker-compose-dag-processor.yaml up`
### Operating System
macOS Monterey 12.3.1
### Versions of Apache Airflow Providers
_No response_
### Deployment
Docker-Compose
### Deployment details
Docker: **20.10.12**
docker-compose: **1.29.2**
### Anything else
_No response_
### Are you willing to submit PR?
- [X] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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