title: Gunicorn workers throwing obscure error in log file
body: <p>A virtual machine hosting my Django web application has recently been acting erratically (set up with gunicorn + nginx reverse proxy). Erratic being the server becomes unavailable for many minutes under high load (~85% CPU utilization). I looked into var/log/upstart/gunicorn.log, and I see the following at some parts of the log. Can anyone tell me what this is?</p>
  
  <pre><code>From cffi callback From cffi callback &lt;function _osrandom_rand_bytes at 0x7fe2dd2b9b18&gt;:
  Traceback (most recent call last):
    File "/home/myuser/.allenvs/myenv/local/lib/python2.7/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 66, in _osra$
  &lt;function _osrandom_rand_bytes at 0x7fe2dcc079b0&gt;    @ffi_callback("int (*)(unsigned char *, int)",
    File "/home/myuser/.allenvs/myenv/local/lib/python2.7/site-packages/gunicorn/workers/base.py", line 159, in handle_abort
  :
  Traceback (most recent call last):
        File "/home/myuser/.allenvs/myenv/local/lib/python2.7/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 66, in _$
  sys.exit(1)
  SystemExit: 1
      @ffi_callback("int (*)(unsigned char *, int)",
    File "/home/myuser/.allenvs/myenv/local/lib/python2.7/site-packages/gunicorn/workers/base.py", line 159, in handle_abort
      sys.exit(1)
  SystemExit: 1
  </code></pre>
  
  <p>I can't find much documentation about this error. Thanks in advance.</p>
  
  <hr>
  
  <p>The contents of /etc/init/gunicorn.conf are:</p>
  
  <pre><code>description "Gunicorn application server handling myproject"
  
  start on runlevel [2345]
  stop on runlevel [!2345]
  
  respawn
  setuid myuser
  setgid www-data
  chdir /home/myuser/projfolder/myproject/
  
  exec /home/myuser/..allenvs/myenv/bin/gunicorn --chdir=/home/myuser/projfolder/ -w 17 --bind unix:/home/myuser/projfolder/myproject/myproject.sock -e ON_AZURE=1 -e HTTPS=on -e awsaccesskeyid=&lt;some_id&gt; -e awssecretkey=&lt;some_key&gt; myproject.wsgi:application
  </code></pre>