{"id":17167,"date":"2025-12-26T18:20:41","date_gmt":"2025-12-26T12:50:41","guid":{"rendered":"https:\/\/www.skynats.com\/?p=17167"},"modified":"2025-12-26T18:43:17","modified_gmt":"2025-12-26T13:13:17","slug":"how-to-fix-supervisor-fatal-state-caused-by-a-missing-uwsgi-ini-file","status":"publish","type":"post","link":"https:\/\/www.skynats.com\/blog\/how-to-fix-supervisor-fatal-state-caused-by-a-missing-uwsgi-ini-file\/","title":{"rendered":"How to Fix Supervisor FATAL State Caused by a Missing uWSGI INI File"},"content":{"rendered":"\n

While deploying a Python application using uWSGI and Supervisor, we encountered an issue where Supervisor repeatedly reported the program status as FATAL, even after correcting the configuration\u2014prompting the need to fix Supervisor FATAL missing uWSGI INI file errors to restore proper service execution.<\/p>\n\n\n\n

Running:<\/p>\n\n\n\n

sudo supervisorctl status<\/code><\/pre>\n\n\n\n
returned:<\/p>\n\n\n\n
api   FATAL   Exited too quickly (process log may have details)<\/code><\/pre>\n\n\n\n
The root cause was that the INI file specified in the Supervisor command= directive did not exist when Supervisor initially tried to start the process.<\/p>\n\n\n\n
Example of an incorrect configuration:<\/p>\n\n\n\n
command=\/var\/www\/html\/website.com\/venv\/bin\/uwsgi --ini api.ini<\/code><\/pre>\n\n\n\n
Why This Happens<\/strong><\/p>\n\n\n\n
Supervisor attempts to start the program<\/p>\n\n\n\n
uWSGI exits immediately because the INI file path is invalid<\/p>\n\n\n\n
Supervisor marks the process as FATAL<\/p>\n\n\n\n
Running reread and update does not restart a FATAL process automatically<\/p>\n\n\n\n
Correct the Supervisor configuration<\/strong><\/p>\n\n\n\n
Ensure the INI file path is absolute and valid:<\/p>\n\n\n\n
[program:api]\ncommand=\/var\/www\/html\/website.com\/venv\/bin\/uwsgi --ini \/var\/www\/html\/website.com\/api.ini\ndirectory=\/var\/www\/html\/website.com\nuser=www-data\nautostart=true\nautorestart=true\nstdout_logfile=\/var\/log\/api.log\nstderr_logfile=\/var\/log\/api.err.log<\/code><\/pre>\n\n\n\n
Remove the program from Supervisor\u2019s internal state<\/strong><\/p>\n\n\n\n
This step is essential.<\/p>\n\n\n\n
sudo supervisorctl stop api\nsudo supervisorctl remove api<\/code><\/pre>\n\n\n\n
Re-read and update Supervisor<\/strong><\/p>\n\n\n\n
sudo supervisorctl reread\nsudo supervisorctl update<\/code><\/pre>\n\n\n\n
sudo supervisorctl start api<\/code><\/pre>\n\n\n\n
Verify the status:<\/p>\n\n\n\n
sudo supervisorctl status<\/code><\/pre>\n\n\n\n
Expected output:<\/p>\n\n\n\n
api   RUNNING   pid 1234, uptime 00:00:30<\/code><\/pre>\n\n\n\n
Test uWSGI directly<\/strong><\/p>\n\n\n\n
sudo -u www-data \/var\/www\/html\/website.com\/venv\/bin\/uwsgi --ini \/var\/www\/html\/website.com\/api.ini<\/code><\/pre>\n\n\n\n