Windows Server HTTP error: '500 INTERNAL SERVER ERROR' running python plugins

[ne-lgute]

Issue reported by Forums user at https://support.nagios.com/forum/viewtopic.php?p=357509#p357509

Error running custom python plugins.

The "Status information" error is: UNKNOWN: An error occured connecting to API. (HTTP error: '500 INTERNAL SERVER ERROR')

ncpa_listener.log

2024-06-27 16:59:08,331 listener.server ERROR Exception on /api/plugins/REGESTA.py/ [GET]
Traceback (most recent call last):
File "listener\nodes.py", line 351, in run_check
File "listener\nodes.py", line 315, in get_values
AttributeError: 'PluginNode' object has no attribute 'method'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "flask\app.py", line 1473, in wsgi_app
File "flask\app.py", line 882, in full_dispatch_request
File "flask\app.py", line 880, in full_dispatch_request
File "flask\app.py", line 865, in dispatch_request
File "listener\server.py", line 317, in token_auth_decoration
File "listener\server.py", line 1507, in api
File "listener\nodes.py", line 353, in run_check
File "listener\pluginnodes.py", line 122, in execute_plugin
File "gevent\subprocess.py", line 808, in __init__
File "gevent\subprocess.py", line 1295, in _execute_child
FileNotFoundError: [WinError 2] Impossibile trovare il file specificato

[MrPippin66]

What is your plugin config settings in your ncpa.cfg file?

[FrancescodeRosa-Reg]

I'm using the command $USER1$/check_ncpa.py and i'm trying to call a remote pythons cript from a Windows Server.

I've changed recently the defaults extension for .py and now the scripts works but in nagios i've got a problem with the "Status information" as you can see in the attachments

Plugin Configuration
# -------------------------------
#

[plugin directives]

#
# Plugin path where all plugins will be run from.
#
plugin_path = plugins/

#
# Follow symlinks located in the plugin path
#
# This is for Unix only (Linux, Mac OS X, etc)
#
follow_symlinks = 0

#
# Plugin execution timeout in seconds. Different than the check_ncpa.py timeout, which is
# normally for network connection issues. Will return a CRITICAL value and error when the plugin
# reaches the defined max execution timeout and kills the process.
# Default: 59
#
# plugin_timeout = 59

#
# Comma separated list of plugins to run through sudo. Note: You will need to update your sudoers
# configuration for these plugins to work when called with sudo.
#
# Example: check_special,check_root_files
# (Command line: sudo /<plugin_absolute_path>/check_special <arguments>)
#
# This is for Unix only (Linux, Mac OS X, etc)
#
# run_with_sudo =

#
# Extensions for plugins
# ----------------------
# The extension for the plugin denotes how NCPA will try to run the plugin. Use this
# for setting how you want to run the plugin in the command line.
#
# NOTE: Plugins without an extension will be run in the cmdline as follows:
#       $plugin_name $plugin_args
#
# Defaults:
# .sh = /bin/sh $plugin_name $plugin_args
# .py = python3.12 $plugin_name $plugin_args
# .pl = perl $plugin_name $plugin_args
# .php = php $plugin_name $plugin_args
# .ps1 = powershell -ExecutionPolicy Bypass -File $plugin_name $plugin_args
# .vbs = cscript $plugin_name $plugin_args //NoLogo
# .wsf = cscript $plugin_name $plugin_args //NoLogo
# .bat = cmd /c $plugin_name $plugin_args
#

# Linux / Mac OS X
.sh = /bin/sh $plugin_name $plugin_args
.py = python $plugin_name $plugin_args
.pl = perl $plugin_name $plugin_args
.php = php $plugin_name $plugin_args

# Windows
.ps1 = powershell -ExecutionPolicy Bypass -File $plugin_name $plugin_args
.vbs = cscript $plugin_name $plugin_args //NoLogo
.wsf = cscript $plugin_name $plugin_args //NoLogo
.bat = cmd /c $plugin_name $plugin_args

[ne-bbahn]

Hello @FrancescodeRosa-Reg, do you have python 2 installed on that machine? Try running python --version (on your NCPA machine) and see if it links to Python 2 or 3.
You may have a python build issue. Are you building NCPA yourself? There was a period where cx_Freeze had updated, but I hadn't yet fixed NCPA, which was causing the init_fs_encoding error.

I recommend backing up your configs/plugins and trying to reinstall with the latest version of NCPA.

[FrancescodeRosa-Reg]

Hi, I’ve resolved the issue by declaring “py” in the custom commands. Thanks for the help. Regards. Il giorno mar 1 ott 2024 alle 18:02 ne-bbahn ***@***.***> ha scritto:

Hello @FrancescodeRosa-Reg <https://github.com/FrancescodeRosa-Reg>, do you have python 2 installed on that machine? Try running python --version (on your NCPA machine) and see if it links to Python 2 or 3. You may have a python build issue. Are you building NCPA yourself? There was a period where cx_Freeze had updated, but I hadn't yet fixed NCPA, which was causing the init_fs_encoding error. I recommend backing up your configs/plugins and trying to reinstall with the latest version of NCPA. — Reply to this email directly, view it on GitHub <#1179 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BCU7IQZLROF4255POZWJQ2LZZLBTBAVCNFSM6AAAAABKAKGBG2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDGOBWGQYDQMJZGU> . You are receiving this because you were mentioned.Message ID: ***@***.***>

Francesco de Rosa IT Specialist M. +39 3457094817 E. ***@***.*** Regesta S.p.A. T. +39 0302426053 Via A. Panigada, 15 – 25126 Brescia (Italy) regestaitalia.eu [disclaimer]