pat-s opened a new issue #9912:
URL: https://github.com/apache/airflow/issues/9912
**Apache Airflow version**: 1.10.11
**Environment**:
- **Cloud provider or hardware configuration**: Exoscale
- **OS** (e.g. from /etc/os-release): bionic
- **Kernel** (e.g. `uname -a`): 4.15.0-112-generic
- **Install tools**: Ansible
- **Others**: python 3.7
**What happened**:
Getting a permission error when trying to enable SSL.
```
Start airflow webserver...
Jul 21 11:51:13 airflow airflow-webserver[21377]: [2020-07-21 11:51:13,731]
{__init__.py:50} INFO - Using executor SequentialExecutor
Jul 21 11:51:13 airflow airflow-webserver[21377]: [2020-07-21 11:51:13,732]
{dagbag.py:396} INFO - Filling up the DagBag from /var/lib/airflow/airflow/dags
Jul 21 11:51:13 airflow airflow-webserver[21377]: * Serving Flask app
"airflow.www.app" (lazy loading)
Jul 21 11:51:13 airflow airflow-webserver[21377]: * Environment: production
Jul 21 11:51:13 airflow airflow-webserver[21377]: WARNING: This is a
development server. Do not use it in a production deployment.
Jul 21 11:51:13 airflow airflow-webserver[21377]: Use a production WSGI
server instead.
Jul 21 11:51:13 airflow airflow-webserver[21377]: * Debug mode: on
Jul 21 11:51:13 airflow airflow-webserver[21377]: Traceback (most recent
call last):
Jul 21 11:51:13 airflow airflow-webserver[21377]: File
"/var/lib/airflow/venv/bin/airflow", line 37, in <module>
Jul 21 11:51:13 airflow airflow-webserver[21377]: args.func(args)
Jul 21 11:51:13 airflow airflow-webserver[21377]: File
"/var/lib/airflow/venv/lib/python3.7/site-packages/airflow/utils/cli.py", line
76, in wrapper
Jul 21 11:51:13 airflow airflow-webserver[21377]: return f(*args,
**kwargs)
Jul 21 11:51:13 airflow airflow-webserver[21377]: File
"/var/lib/airflow/venv/lib/python3.7/site-packages/airflow/bin/cli.py", line
1073, in webserver
Jul 21 11:51:13 airflow airflow-webserver[21377]: ssl_context=(ssl_cert,
ssl_key) if ssl_cert and ssl_key else None)
Jul 21 11:51:13 airflow airflow-webserver[21377]: File
"/var/lib/airflow/venv/lib/python3.7/site-packages/flask/app.py", line 990, in
run
Jul 21 11:51:13 airflow airflow-webserver[21377]: run_simple(host, port,
self, **options)
Jul 21 11:51:13 airflow airflow-webserver[21377]: File
"/var/lib/airflow/venv/lib/python3.7/site-packages/werkzeug/serving.py", line
990, in run_simple
Jul 21 11:51:13 airflow airflow-webserver[21377]: s.bind(server_address)
Jul 21 11:51:13 airflow airflow-webserver[21377]: PermissionError: [Errno
13] Permission denied
Jul 21 11:51:14 airflow airflow-webserver[21377]: ...fail!
```
<!-- (please include exact error messages if you can) -->
**What you expected to happen**:
Normal startup.
**What do you think went wrong?**
I don't know.
SSL seems to be correctly configured in `airflow.cfg`:
```
[webserver]
web_server_port = 443
web_server_ssl_key = /etc/letsencrypt/live/<domain>/privkey.pem
web_server_ssl_cert = /etc/letsencrypt/live/<domain>/fullchain.pem
base_url = https://<domain>:443
```
Without SSL configuration, everything works on localhost:8080.
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