Unable to see inputs and configuration page for Appd Add-on

[vikramyadav]

Hi Guys,

I have installed AppD in my DEV environment from SVN and when I try to open Input and configuration page its shows "loading"
I waited more than an hour but still the same. Below is the error which I get into the DEV environment.

10-27-2020 10:16:19.674 -0500 ERROR AdminManagerExternal - Unexpected error "<class 'splunktaucclib.rest_handler.error.RestError'>" from python handler: "REST Error [500]: Internal Server Error -- Traceback (most recent call last):\n File "/opt/splunk/etc/apps/Splunk_TA_AppDynamics/bin/splunk_ta_appdynamics/aob_py2/splunktaucclib/rest_handler/handler.py", line 117, in wrapper\n for name, data, acl in meth(self, *args, **kwargs):\n File "/opt/splunk/etc/apps/Splunk_TA_AppDynamics/bin/splunk_ta_appdynamics/aob_py2/splunktaucclib/rest_handler/handler.py", line 303, in _format_response\n masked = self.rest_credentials.decrypt_for_get(name, data)\n File "/opt/splunk/etc/apps/Splunk_TA_AppDynamics/bin/splunk_ta_appdynamics/aob_py2/splunktaucclib/rest_handler/credentials.py", line 188, in decrypt_for_get\n clear_password = self._get(name)\n File "/opt/splunk/etc/apps/Splunk_TA_AppDynamics/bin/splunk_ta_appdynamics/aob_py2/splunktaucclib/rest_handler/credentials.py", line 393, in _get\n string = mgr.get_password(user=context.username())\n File "/opt/splunk/etc/apps/Splunk_TA_AppDynamics/bin/splunk_ta_appdynamics/aob_py2/solnlib/utils.py", line 159, in wrapper\n return func(*args, **kwargs)\n File "/opt/splunk/etc/apps/Splunk_TA_AppDynamics/bin/splunk_ta_appdynamics/aob_py2/solnlib/credentials.py", line 118, in get_password\n all_passwords = self._get_all_passwords()\n File "/opt/splunk/etc/apps/Splunk_TA_AppDynamics/bin/splunk_ta_appdynamics/aob_py2/solnlib/utils.py", line 159, in wrapper\n return func(*args, **kwargs)\n File "/opt/splunk/etc/apps/Splunk_TA_AppDynamics/bin/splunk_ta_appdynamics/aob_py2/solnlib/credentials.py", line 272, in _get_all_passwords\n clear_password += field_clear[index]\nTypeError: cannot concatenate 'str' and 'NoneType' objects\n". See splunkd.log for more details.

Also screenshot,

If I'm installing directly I don't see any errors I'm not sure what is the issue I tried multiple ways but no luck.

[nwuest]

Hi @vikramyadav,

Fixing my previous tail command, it should be this one for Linux.

LINUX:
If you don't have the "watch" command you can always tail the /opt/splunkforwarder/var/log/splunk/splunkd.log for the applicable app.
# tail -f /opt/splunkforwarder/var/log/splunk/splunkd.log | grep "program name"

We hope to hear your progress!

V/R,
nwuest

[nwuest]

Hi @vikramyadav,

I see you are getting a ""REST Error [500]: Internal Server Error " based on the logs you provided.

Have you tried searching the splunkd.log for any more concise information as to why the app isn't working?

LINUX:
If you don't have the "watch" command you can always tail the /opt/splunkforwarder/var/log/splunk/splunkd.log for the applicable app.
# tail -f /opt/splunkforwarder/var/log/splunk/splunkd.log | grep "TcpOutputProc"

WINDOWS:
If you are currently running on a windows box and have access to powershell you can use the following command to see the output of splunkd.log
(Open powershell in admin mode)
# Get-Content -Path "C:\Program Files\SplunkUniversalForwarder\var\log\splunk\splunkd.log" -Wait
It will chunk through the file until it gets to the end but run this before you access/re-install the app again.

Look forward to hearing from you

V/R,
nwuest

[vikramyadav]

Hi @nwuest 

I have figured out the issue. Some Add-on does not follow the normal deployment process and due to that, we might face a similar issue.

Thanks for your help.