question je n'arrive pas à accéder a NIFI in Support Questions

je n'arrive pas à accéder a NIFI

dyhiamedjouti — Sat, 11 Mar 2023 15:18:23 GMT

Bonjour, j'ai installé NIFI en suivant la documentation, j'ai bien evidement vérifié que j'avais le bon java, mais au moment d'accéder au portail localhost, je n'y arrive pas, ca me met ça:

Bien evidemment je l'ai la,cé avant, voici ce que dit la cmd ou je le lance, aussi je ne trouve pas mes identiifiants comme convenu dans le fichier logs, quelqu'un pourrait m'aider svp

Re: je n'arrive pas à accéder a NIFI

VidyaSargur — Mon, 13 Mar 2023 07:45:59 GMT

English Screenshot:

I can't access NIFI

Hello, I installed NIFI following the documentation, I obviously checked that I had the right java, but when I access the localhost portal, I can't, it gives me this: (Screenshot 1)

Of course I have it before, here is what the cmd says where I run it, also I can't find my identifiers as agreed in the log file, someone could help me please ((Screenshot 2)

Re: je n'arrive pas à accéder a NIFI

VidyaSargur — Mon, 13 Mar 2023 07:49:36 GMT

@dyhiamedjouti, Welcome to our community! To help you get the best possible answer, I have tagged in our Nifi experts @SAMSAL @cotopaul @MattWho @ckumar who may be able to assist you further.

Please feel free to provide any additional information or details about your query, and we hope that you will find a satisfactory solution to your question.

Re: je n'arrive pas à accéder a NIFI

cotopaul — Mon, 13 Mar 2023 09:49:22 GMT

Without knowing what you have configured, I will try and assume some of your configurations:
- based on your installation, I assume that you are using HTTP and not HTTPS, right? If I take a look in your screenshot, I can see that you are running on port 8443, which is the default port configured within nifi.web.https.port. I assume that you wrote the host and the port in the nifi.web.http.host and the nifi.web.http.port properties and not the HTTPS properties, right? If not, this is what might be causing your issue.
- besides that, have you check the logs for any errors and so on? I am talking here about the bootstrap logs (nifi-bootstrap.log) and the application logs (nifi-app.log). If everything starts normally, within the application logs you should see the link where NiFi is available. Otherwise, there is an error and you have to take a look.

PS: it would help if you could attach the nifi.properties here, with all the confidential information written as standard placeholders (like <hostname>, <password> , etc)

Re: je n'arrive pas à accéder a NIFI

MattWho — Mon, 13 Mar 2023 14:22:26 GMT

@dyhiamedjouti

It would also be helpful if you shared the full version of Apache NiFi that you installed.
The latest versions of NiFi start as secured by default. The Single User "username" and "password" are only output to the log the very first time NiFi is started. Subsequent restarts of NiFi service will not log the username and password again.

You can stop your NiFi and run the following command to set your own single user identity provider username and password:

$ ./bin/nifi.sh set-single-user-credentials <username> <password>

Then when NiFi is up and running, you can use your set username and password to access the UI.

Not knowing your username and password has nothing to do with the browser not being able to load the NiFi UI for logging in.

When you launch NiFi, this starts the NiFi bootstrap process which will then launch a child process which is the main Nifi process. When this sub process starts, logging will begin in the nifi-app.log. The NiFi Ui will not be accessible until this process has loaded completely and successfully. NiFi will log a few lines that contain UI is available at the following URLs. You'll want to verify you find these log lines and the URLs listed. These are the URLs you will use in your browser to access your NiFi.

If you do not see the URLs output in the logs, that means NiFi failed to successfully start. Again the nifi-app.log should provide logging details as to why the sub-process failed during the startup process. Commonly a result of misconfiguration. If you are not seeing a nifi-app.log produced, then check for the nifi-bootstrap.log for any exceptions.

If you found that the provided solution(s) assisted you with your query, please take a moment to login and click Accept as Solution below each response that helped.

Thank you,

Matt

Re: je n'arrive pas à accéder a NIFI

dyhiamedjouti — Mon, 13 Mar 2023 22:04:39 GMT

how can I please fixe this problem and connect on the right port?

Re: je n'arrive pas à accéder a NIFI

cotopaul — Tue, 14 Mar 2023 07:57:55 GMT

well if you want to modify the port, you have to stop nifi, modify nifi.properties and restart nifi. But without knowing how you configured NiFi ( content of nifi.properties) nobody can tell you how to solve your issue. Maybe you can add the content of nifi.properties here and afterwards we can guide you further. Nevertheless, how Matt stated below, you need to check your application logs and see if NiFi started correctly. If NiFi starts correctly, you will see a log line saying that NiFi UI (User Interface) is available at a specific URL. You need to take that URL and paste it in your browser. If such a line is not available, than you need to check the logs to see what the error is.