启动gunicorn报错：
# gunicorn -b :9008 -w 2 webserver:app
2013-12-10 09:12:58 [29701] [INFO] Starting gunicorn 0.14.3
2013-12-10 09:12:58 [29701] [INFO] Listening at: http://0.0.0.0:9008 (29701)
2013-12-10 09:12:58 [29701] [INFO] Using worker: sync
2013-12-10 09:12:58 [29704] [INFO] Booting worker with pid: 29704
2013-12-10 09:12:58 [29705] [INFO] Booting worker with pid: 29705
2013-12-10 09:12:58 [29704] [INFO] Worker exiting (pid: 29704)
2013-12-10 09:12:58 [29705] [INFO] Worker exiting (pid: 29705)
Traceback (most recent call last):
File "/root/.virtualenvs/py268/bin/gunicorn", line 8, in <module>
load_entry_point('gunicorn==0.14.3', 'console_scripts', 'gunicorn')()
File "/root/.virtualenvs/py268/lib/python2.6/site-packages/gunicorn/app/wsgiapp.py", line 32, in run
WSGIApplication("%prog [OPTIONS] APP_MODULE").run()
File "/root/.virtualenvs/py268/lib/python2.6/site-packages/gunicorn/app/base.py", line 129, in run
Arbiter(self).run()
File "/root/.virtualenvs/py268/lib/python2.6/site-packages/gunicorn/arbiter.py", line 184, in run
self.halt(reason=inst.reason, exit_status=inst.exit_status)
File "/root/.virtualenvs/py268/lib/python2.6/site-packages/gunicorn/arbiter.py", line 279, in halt
self.stop()
File "/root/.virtualenvs/py268/lib/python2.6/site-packages/gunicorn/arbiter.py", line 327, in stop
self.reap_workers()
File "/root/.virtualenvs/py268/lib/python2.6/site-packages/gunicorn/arbiter.py", line 413, in reap_workers
raise HaltServer(reason, self.WORKER_BOOT_ERROR)
gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>
解决：
使用debug模式查看更多信息--log-level=debug：
gunicorn -b :9008 -w 2 webserver:app --log-level=debug
发现是import error
添加pythonpath以及import的资源目录添加__init__.py文件使之成为一个package即可
export PYTHONPATH=/home/..