Why is PyMongo 3 giving ServerSelectionTimeoutError?

Question

I\'m using:

• Python 3.4.2
• PyMongo 3.0.2
• mongolab running mongod 2.6.9
• uWSGI 2.0.10
• CherryPy 3.7.0
• nginx 1.6.2

Answer 1

I encountered this too.

This could be due to pymongo3 isn't fork safe.

I fix this by adding --lazy-apps param to uwsgi, this can avoid the "fork safe" problem.

seeing uwsgi doc preforking-vs-lazy-apps-vs-lazy.

Notice, no sure for this two having positive connection.