None api version after update Netbox to version 3.0.1

[Sivolen]

Hi, i have a problem after update NetBox to to version 3.0.1

a.gridnev@netbox:/opt/scripts/netbox-sync$ ./netbox-sync.py -l DEBUG2
2021-09-03 09:29:23,159 - INFO: Starting NetBox Sync
2021-09-03 09:29:23,159 - DEBUG: Using config file: /opt/scripts/netbox-sync/settings.ini
2021-09-03 09:29:23,161 - DEBUG: Config: netbox.api_token = 02a***
2021-09-03 09:29:23,161 - DEBUG: Config: netbox.host_fqdn = 10.0.2.18
2021-09-03 09:29:23,161 - DEBUG: Config: netbox.port = 443
2021-09-03 09:29:23,161 - DEBUG: Config: netbox.disable_tls = False
2021-09-03 09:29:23,161 - DEBUG: Config: netbox.validate_tls_certs = False
2021-09-03 09:29:23,161 - DEBUG: Config: netbox.prune_enabled = True
2021-09-03 09:29:23,161 - DEBUG: Config: netbox.prune_delay_in_days = 30
2021-09-03 09:29:23,161 - DEBUG: Config: netbox.default_netbox_result_limit = 200
2021-09-03 09:29:23,162 - DEBUG: Config: netbox.timeout = 30
2021-09-03 09:29:23,162 - DEBUG: Config: netbox.max_retry_attempts = 4
2021-09-03 09:29:23,162 - DEBUG: Config: netbox.use_caching = True
2021-09-03 09:29:23,162 - DEBUG: Created new requests Session for NetBox.
2021-09-03 09:29:23,240 - INFO: Successfully connected to NetBox '10.0.2.18'
2021-09-03 09:29:23,240 - DEBUG: Detected NetBox API version: None
Unable to determine NetBox version, HTTP header 'API-Version' missing.

Temporarily changed the code

       #api_version = self.get_api_version()
        api_version = "3.0"

[bb-Ricardo]

This might have something to do with your reverse proxy setup. I had no issues using this instance: https://github.com/netbox-community/netbox-docker

[Sivolen]

Hm, i will try to stop proxy and test again

[Sivolen]

Hi, i disabled proxy and the problem persists

a.gridnev@netbox:/opt/scripts/netbox-sync$ ./netbox-sync.py
2021-09-06 10:41:28,064 - INFO: Starting NetBox Sync
2021-09-06 10:41:29,553 - INFO: Successfully connected to NetBox '10.0.2.18'
Unable to determine NetBox version, HTTP header 'API-Version' missing.

a.gridnev@netbox:/opt/scripts/netbox-sync$ env | grep -i proxy
a.gridnev@netbox:/opt/scripts/netbox-sync$ 

[Sivolen]

Hi!
i tested the script on another server and it has the same error
In both cases, this is the ubuntu server 20.04
Linux aso 5.11.0-25-generic #27~20.04.1-Ubuntu SMP Tue Jul 13 17:41:23 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

  a.gridnev@aso:~/Desktop/netbox-sync$ ./netbox-sync.py
2021-09-07 09:05:56,212 - INFO: Starting NetBox Sync
2021-09-07 09:05:56,471 - INFO: Successfully connected to NetBox '10.0.2.18'
Unable to determine NetBox version, HTTP header 'API-Version' missing.

[bb-Ricardo]

Hi, I meant the reverse proxy in front of your NetBox Installation. Just try a curl -I https://10.0.2.18/api/ (or http if unencrypted)
I got following response

HTTP/1.1 200 OK
Content-Type: application/json
Vary: Accept, Cookie, Origin
Allow: GET, HEAD, OPTIONS
API-Version: 3.0
X-Content-Type-Options: nosniff
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Content-Length: 420
Server: Unit/1.23.0
Date: Tue, 07 Sep 2021 11:12:11 GMT

There is a API-Version header. This one is missing in your setup. So the script can't determine which version of NetBox you're actually running.

[gstorme]

It worked fine on 3.0-beta2, but now I've tried it on 3.0.1 and there is indeed no more API-Version in the response

[gstorme]

See netbox-community/netbox#7198

[bb-Ricardo]

Interesting find. Thank you for looking into it.

I also just could add the header. What do you think?

[gstorme]

Yes indeed, I also think it would be best to just add the Content-Type: application/json header to all the netbox api requests

[Sivolen]

Hi, I meant the reverse proxy in front of your NetBox Installation. Just try a curl -I https://10.0.2.18/api/ (or http if unencrypted)
I got following response

HTTP/1.1 200 OK
Content-Type: application/json
Vary: Accept, Cookie, Origin
Allow: GET, HEAD, OPTIONS
API-Version: 3.0
X-Content-Type-Options: nosniff
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Content-Length: 420
Server: Unit/1.23.0
Date: Tue, 07 Sep 2021 11:12:11 GMT

There is a API-Version header. This one is missing in your setup. So the script can't determine which version of NetBox you're actually running.

Oh, sorry, yes, no api version

root@netbox:/etc/nginx/sites-available# curl -I http://10.0.2.18/api/
HTTP/1.1 301 Moved Permanently
Server: nginx/1.18.0 (Ubuntu)
Date: Wed, 08 Sep 2021 00:36:02 GMT
Content-Type: text/html
Content-Length: 178
Location: https://10.0.2.18/api/
X-Cache: MISS from localhost
X-Cache-Lookup: HIT from localhost:8080
Via: 1.1 localhost (squid/4.15)
Connection: keep-alive

[bb-Ricardo]

Oh, sorry, yes, no api version

root@netbox:/etc/nginx/sites-available# curl -I http://10.0.2.18/api/
HTTP/1.1 301 Moved Permanently
Server: nginx/1.18.0 (Ubuntu)
Date: Wed, 08 Sep 2021 00:36:02 GMT
Content-Type: text/html
Content-Length: 178
Location: https://10.0.2.18/api/
X-Cache: MISS from localhost
X-Cache-Lookup: HIT from localhost:8080
Via: 1.1 localhost (squid/4.15)
Connection: keep-alive

And if you try curl -I https://10.0.2.18/api/

[Sivolen]

Hi!
yes

a.gridnev@netbox:~$ curl -I 10.0.2.18/api/
HTTP/1.1 301 Moved Permanently
Server: nginx/1.18.0 (Ubuntu)
Date: Wed, 08 Sep 2021 07:02:50 GMT
Content-Type: text/html
Content-Length: 178
Location: https://10.0.2.18/api/
X-Cache: MISS from localhost
X-Cache-Lookup: HIT from localhost:8080
Via: 1.1 localhost (squid/4.15)
Connection: keep-alive

[bb-Ricardo]

did you copy the command?

[Sivolen]

yes, there's this is how it looks if you make a request for the domain

a.gridnev@netbox:~$ curl -I -k https://netbox.aso.rt.local/api/
HTTP/1.1 200 OK
Server: nginx/1.18.0 (Ubuntu)
Date: Thu, 09 Sep 2021 00:31:11 GMT
Content-Type: application/json
Content-Length: 474
Connection: keep-alive
Vary: Accept, Cookie, Origin
Allow: GET, HEAD, OPTIONS
X-Content-Type-Options: nosniff
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN

[n3bojs4]

Hello,
Is there any commit to fix this issue ?

Regards.