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markliederbach avatar markliederbach commented on May 16, 2024

Paging @kamakazikamikaze , I am also experiencing this. Can you enlighten us as to how we should be installing this package from source like this?

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avatar commented on May 16, 2024

Try this:
pip uninstall easysnmp
pip install git+https://github.com/kamakazikamikaze/easysnmp.git

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markliederbach avatar markliederbach commented on May 16, 2024

That works, but why? Sort of confusing that git works but a local install won't.

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avatar commented on May 16, 2024

I believe it has to do with the dependencies. Easy SNMP is built on top of NET-SNMP. If you check your versions snmpget --version NET-SNMP may have changed.

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tpd001 avatar tpd001 commented on May 16, 2024

Similar experience, Python 3.6 / Miniconda / NetSNMP 5.7.3:

(cenv) [collector@monitoring portal]$python3.6  
Python 3.6.3 |Anaconda, Inc.| (default, Nov 20 2017, 20:41:42) 
[GCC 7.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from easysnmp import Session
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/collector/miniconda3/lib/python3.6/site-packages/easysnmp/__init__.py", line 1, in <module>
from .easy import (  # noqa
File "/home/collector/miniconda3/lib/python3.6/site-packages/easysnmp/easy.py", line 3, in <module>
from .session import Session
File "/home/collector/miniconda3/lib/python3.6/site-packages/easysnmp/session.py", line 8, in <module>
from . import interface
ImportError: /home/collector/miniconda3/lib/python3.6/site-packages/easysnmp/interface.cpython-36m-x86_64-linux-gnu.so: undefined symbol: usmAESPrivProtocol

Note the interface.cpython-36m-x86_64-linux-gnu.so library does not have a dependency on libnetsnmp.so, which contains the symbol:

(cenv) [collector@monitoring portal]$ldd /home/collector/miniconda3/lib/python3.6/site-packages/easysnmp/interface.cpython-36m-x86_64-linux-gnu.so 
linux-vdso.so.1 =>  (0x00007fff3b7ff000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fda2432f000)
libc.so.6 => /lib64/libc.so.6 (0x00007fda23f9a000)
/lib64/ld-linux-x86-64.so.2 (0x00000034c0400000)

(cenv) [collector@monitoring portal]$nm -ng /usr/local/lib/libnetsnmp.so  | grep usmAESPrivProtocol
00000000002a5b60 D usmAESPrivProtocol

Tracing this back to installation:

(cenv) [collector@monitoring portal]$pip install easysnmp -v --no-cache-dir | more
Collecting easysnmp
...
/bin/sh: net-snmp-config: command not found   <======

Is there a reason 'pip install' does not fail at this point?

Thank you
Tim

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WhittlesJr avatar WhittlesJr commented on May 16, 2024

This may not be helpful to anyone else, but I'll leave a breadcrumb:

I had the same issue trying to package this on NixOS. The solution was:

{
  postFixup = ''
    patchelf --add-needed ${pkgs.net_snmp}/lib/libnetsnmp.so "$out/${python.sitePackages}/easysnmp/"*cpython*.so
  '';
}

Again, it's only strictly useful for NixOS, but maybe it can give someone a hint if they run into the same problem packaging easysnmp on another distro.

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WhittlesJr avatar WhittlesJr commented on May 16, 2024

Update: A simpler solution turned out to be using the --basedir= flag to specify the location of the net-snmp-config executable. (Which for me would be ${pkgs.net_snmp}/bin)

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