What Is the “Worker Failed to Boot” Error?
The “Worker Failed to Boot” error is a common issue faced by developers using the Gunicorn web server. It typically appears in the logs when Gunicorn workers fail to start or boot properly. This can result in your web application failing to run, causing downtime and potentially affecting your users’ experience.
Traceback (most recent call last):
File "/usr/local/bin/gunicorn", line 8, in <module>
sys.exit(run())
File "/usr/local/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 61, in run
WSGIApplication("%(prog)s [OPTIONS] [APP_MODULE]").run()
File "/usr/local/lib/python3.8/site-packages/gunicorn/app/base.py", line 223, in run
super(Application, self).run()
File "/usr/local/lib/python3.8/site-packages/gunicorn/app/base.py", line 72, in run
Arbiter(self).run()
File "/usr/local/lib/python3.8/site-packages/gunicorn/arbiter.py", line 232, in run
self.halt(reason=inst.reason, exit_status=inst.exit_status)
File "/usr/local/lib/python3.8/site-packages/gunicorn/arbiter.py", line 345, in halt
self.stop()
File "/usr/local/lib/python3.8/site-packages/gunicorn/arbiter.py", line 393, in stop
time.sleep(0.1)
File "/usr/local/lib/python3.8/site-packages/gunicorn/arbiter.py", line 245, in handle_chld
self.reap_workers()
File "/usr/local/lib/python3.8/site-packages/gunicorn/arbiter.py", line 525, in reap_workers
raise HaltServer(reason, self.WORKER_BOOT_ERROR)
gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>
Find out the cause of the error and its resolution here
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