Dealing with upgrade of libevent on Amazon AWS
- by Dreen
I am building an application (in Python) on Amazon EC2 that has a following dependency chain:
gevent-websocket ---> gevent ---> libevent
The last one (libevent) got upgraded on Sunday and my server is now generating this error:
(...)
File "/usr/lib/python2.6/site-packages/gevent-0.13.7-py2.6-linux-x86_64.egg/gevent/__init__.py", line 41, in <module>
from gevent import core
ImportError: libevent-1.4.so.2: cannot open shared object file: No such file or directory
Not wanting to spend much time on the issue, I tried to mitigate it by creating a symlink to an always-recent version:
$ sudo ln -s /usr/lib64/libevent.so /usr/lib64/libevent-1.4.so.2
But it didn't quite work:
(...)
File "/usr/lib/python2.6/site-packages/gevent-0.13.7-py2.6-linux-x86_64.egg/gevent/__init__.py", line 41, in <module>
from gevent import core
ImportError: /usr/lib/python2.6/site-packages/gevent-0.13.7-py2.6-linux-x86_64.egg/gevent/core.so: undefined symbol: current_base
I am a bit stumped as to how to proceed. Should I create more symlinks? To what? Or is there a better way to solve this problem...
PS. For the record I am using Amazon AMI.
