topic Re: Cisco DNAC - REST API Call to retrieve token. in Network Platform API

Cisco DNAC - REST API Call to retrieve token.

Netmart — Mon, 22 Jul 2024 03:49:54 GMT

Hello,

For some reason, it appears that I am receiving the response for a token in request in html format indicated by the following error:

File "/usr/lib64/python3.9/json/decoder.py", line 355, in raw_decode

raise JSONDecodeError("Expecting value", s, err.value) from None

json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Below you will find an excerpt of the code:

#!/usr/bin/python

import requests

import json

import urllib3

from requests.auth import HTTPBasicAuth

urllib3.disable_warnings()

my_dna_ctr="sandboxdnac2.cisco.com"

my_user="devnetuser"

my_password="Cisco123!"

tkn_headers={"Content-Type": "application/json"}

my_tkn_uri="https://"+my_dna_ctr+"/dna/system/api/vi/auth/token"

my_tkn_req=requests.post(my_tkn_uri, auth=HTTPBasicAuth(my_user, my_password),headers=tkn_headers,verify=False)

my_access_token=my_tkn_req.json()["Token"]

I appreciate any help.

Thanks.

Re: Cisco DNAC - REST API Call to retrieve token.

mfr-6 — Mon, 22 Jul 2024 08:05:06 GMT

hi @Netmart

First - seems like your URL is wrong. It should be /dna/system/api/v1/auth/token <- there is "v1" instead of "vi".

I tested your script and unfortunately there is a problem with authentication endpoint on dnac. I got response:

{ "error": "Basic Authorization is not allowed" }

Seems like sandboxdnac2 has Basic auth disabled, because i tried to authenticate using GUI and Dev Toolkit - i got the same result.

BUT - you can use https://sandboxdnac.cisco.com/ without "2" and this will return you token with no issues so maybe this is the option?

The code with typo fixed:

#!/usr/bin/python import requests import json import urllib3 from requests.auth import HTTPBasicAuth urllib3.disable_warnings() my_dna_ctr="sandboxdnac.cisco.com" my_user="devnetuser" my_password="Cisco123!" tkn_headers={"Content-Type": "application/json"} my_tkn_uri="https://"+my_dna_ctr+"/dna/system/api/v1/auth/token" my_tkn_req=requests.post(my_tkn_uri, auth=HTTPBasicAuth(my_user, my_password),headers=tkn_headers,verify=False) my_access_token=my_tkn_req.json()["Token"]

Re: Cisco DNAC - REST API Call to retrieve token.

Marcel Zehnder — Mon, 22 Jul 2024 10:10:33 GMT

Also see https://community.cisco.com/t5/devnet-sandbox/unable-to-do-rest-api-s-to-catalyst-centers/m-p/5147187/highlight/true#M10221