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networklore / nelkit

https://networklore.com/nelkit/
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can't get nk-snmp-deviceinfo to work #7

Open itchykun opened 6 years ago

itchykun commented 6 years ago

Hi,

Thank you for writing this useful tool. However, I can't get nk-snmp-deviceinfo to work properly. I installed it without error but when I tried to use it against my SNMPv3 device (Arista, Cisco, Junos, doesn't matter), I get the same error every time.

lab$ nk-snmp-deviceinfo -H hostname -P 3 -L authPriv -a SHA -X AES -U v3PDTuser -A pass_auth -X pass_priv

Traceback (most recent call last): File "/usr/bin/nk-snmp-deviceinfo", line 11, in load_entry_point('nelkit==0.0.3', 'console_scripts', 'nk-snmp-deviceinfo')() File "/usr/lib/python2.7/site-packages/nelkit/cli/snmp_deviceinfo.py", line 15, in main hostinfo.get_all() File "/usr/lib/python2.7/site-packages/nelsnmp/hostinfo/device.py", line 46, in get_all data = self._snmp.get(*oids) File "/usr/lib/python2.7/site-packages/nelsnmp/snmp.py", line 232, in get cmdGen = cmdgen.CommandGenerator() File "/usr/lib/python2.7/site-packages/pysnmp/entity/rfc3413/oneliner/cmdgen.py", line 168, in init self.snmpEngine = snmpEngine or SnmpEngine() File "/usr/lib/python2.7/site-packages/pysnmp/entity/engine.py", line 63, in init self.msgAndPduDsp = MsgAndPduDispatcher() File "/usr/lib/python2.7/site-packages/pysnmp/proto/rfc3412.py", line 32, in init 'SNMP-TARGET-MIB', 'SNMP-USER-BASED-SM-MIB' File "/usr/lib/python2.7/site-packages/pysnmp/smi/builder.py", line 362, in loadModules self.loadModule(modName, userCtx) File "/usr/lib/python2.7/site-packages/pysnmp/smi/builder.py", line 330, in loadModule 'MIB module \"%s\" load error: %s' % (modPath, traceback.format_exception(sys.exc_info())) pysnmp.smi.error.MibLoadError: MIB module "/usr/lib/python2.7/site-packages/pysnmp/smi/mibs/SNMPv2-MIB.pyc" load error: ['Traceback (most recent call last):\n', ' File "/usr/lib/python2.7/site-packages/pysnmp/smi/builder.py", line 325, in loadModule\n exec (modData, g)\n', ' File "/tmp/pip-build-jhHD1l/pysnmp/pysnmp/smi/mibs/SNMPv2-MIB.py", line 27, in \n', ' File "/usr/lib/python2.7/site-packages/pysnmp/proto/rfc1902.py", line 206, in subtype\n return univ.OctetString.subtype(self, args, kwargs).setFixedLength(self.getFixedLength())\n', ' File "/usr/lib/python2.7/site-packages/pyasn1/type/base.py", line 122, in subtype\n value = self._value\n', "AttributeError: 'DisplayString' object has no attribute '_value'\n"]

ogenstad commented 6 years ago

Hi, do you think you can try to install nelkit 0.0.4 and test with that version?

I think I know what's going on and it might be an old bug with earlier versions of nelsnmp.

itchykun commented 6 years ago

[root@lab ~]# pip install -U nelkit Collecting nelkit Downloading nelkit-0.0.4.tar.gz Requirement already up-to-date: argparse in /usr/lib/python2.7/site-packages (from nelkit) Requirement already up-to-date: nelsnmp>=0.2.7 in /usr/lib/python2.7/site-packages (from nelkit) Requirement already up-to-date: PyYAML in /usr/lib64/python2.7/site-packages (from nelkit) Requirement already up-to-date: pysnmp>=4.3.1 in /usr/lib/python2.7/site-packages (from nelsnmp>=0.2.7->nelkit) Requirement already up-to-date: pycryptodome in /usr/lib64/python2.7/site-packages (from pysnmp>=4.3.1->nelsnmp>=0.2.7->nelkit) Requirement already up-to-date: pysmi in /usr/lib/python2.7/site-packages (from pysnmp>=4.3.1->nelsnmp>=0.2.7->nelkit) Collecting pyasn1>=0.2.3 (from pysnmp>=4.3.1->nelsnmp>=0.2.7->nelkit) Downloading pyasn1-0.3.6-py2.py3-none-any.whl (63kB) 100% |████████████████████████████████| 71kB 5.7MB/s Collecting ply (from pysmi->pysnmp>=4.3.1->nelsnmp>=0.2.7->nelkit) Downloading ply-3.10.tar.gz (150kB) 100% |████████████████████████████████| 153kB 4.9MB/s Installing collected packages: nelkit, pyasn1, ply Found existing installation: nelkit 0.0.3 Uninstalling nelkit-0.0.3: Successfully uninstalled nelkit-0.0.3 Running setup.py install for nelkit ... done Found existing installation: pyasn1 0.3.2 Uninstalling pyasn1-0.3.2: Successfully uninstalled pyasn1-0.3.2 Found existing installation: ply 3.4 DEPRECATION: Uninstalling a distutils installed project (ply) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project. Uninstalling ply-3.4: Successfully uninstalled ply-3.4 Running setup.py install for ply ... done Successfully installed nelkit-0.0.4 ply-3.10 pyasn1-0.3.6

lab$ nk-snmp-deviceinfo -H hostname -P 3 -L authPriv -a SHA -X AES -U v3PDTuser -A pass_auth -X pass_priv Traceback (most recent call last): File "/usr/bin/nk-snmp-deviceinfo", line 11, in load_entry_point('nelkit==0.0.4', 'console_scripts', 'nk-snmp-deviceinfo')() File "/usr/lib/python2.7/site-packages/nelkit/cli/snmp_deviceinfo.py", line 13, in main snmp = NelkitSnmp(args) File "/usr/lib/python2.7/site-packages/nelkit/snmp/handler.py", line 12, in init self._set_snmp_parameters(args) File "/usr/lib/python2.7/site-packages/nelkit/snmp/handler.py", line 40, in _set_snmp_parameters privProtocol=self.privacy) AttributeError: 'NelkitSnmp' object has no attribute 'privacy'

itchykun commented 6 years ago

found the issue. option -O isn't optional, it's mandatory. Also "standard" and "with_status" give the same results. Thanks

ogenstad commented 6 years ago

Hi, I think the problem is that there's a bug in the code which parses arguments.

Can you change to a small "-x" for the encryption algorithm? I.e -x AES instead of -X AES?

The -o option is probably a visual bug after copying some of the code from another library I have (nelmon).

To be honest it was a while since I looked at this code and it would need a cleanup in order to be a bit more robust.