kerby | Go wrapper for Kerberos GSSAPI | Identity Management library

I'm trying to call this shell script using supervisord. supervisorctl reports the following error when trying to start the process:

kerby-kdc FATAL Exited too quickly (process log may have details)

I checked the kerby logs but no errors were reported.

I configured the process in /etc/supervisor/supervisord.conf as follows:

I'm running an instance of the Kerby (MIT Kerberos Java implementation) on a Linux machine. I have a web application running on a Windows machine. The web application is secured using Spring Security Kerberos (following the steps described in this article).

Per the Kerberos protocol description for client authentication on wikipedia, step 1 is

1. The client sends a cleartext message of the user ID to the AS (Authentication Server) requesting services on behalf of the user.

The client (in my case) is a web browser. How does the web browser know where the Authentication Server is? I don't see any mention of that in the article or in its referenced code. Is it part of the keytab that is exported from the KDC for the service principal name (SPN)?

i've tried to use columns to solve my problems but it doenst work. It still say

"The argument for the named parameter 'child' was already specified." I don't know what to do and i try to learn flutter and dart so if someone have the answer please explain to me.

Thank you

This is my code :

I am trying to send an email through a google script, but although the email is received from the recipient, the body of the email shows up blank. I am wondering if I am formatting the HTML document incorrectly? Or could it be that I am misusing the MailApp.sendEmail() API?

Here is the code in the google script that sends the email:

I'm a student of big data. I'm coming to you today for a question about the high availability of HDFS using Zookeeper. I am aware that there has already been bcp of topic dealing with this subject, I have read a lot of them already. It's already been 15 days that I've been browsing the forums without finding what I'm looking for (maybe I'm not looking in the right place too ;-) )

I have followed the procedure three times here: https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html.

I may have done everything right, but when I kill one of my namenodes, none of them take over.

My architecture is as follows: - 5 VM - VM 1,3 and 5 are namenodes - VMs 1 to 5 are datanodes.

I launched my journalnodes, I started my DFSZKFailoverController, I formatted my first namenode, I copied with -bootstrapStandby the configuration of my first namenode to the 2 others and I started my cluster.

Despite all this and no obvious problems in the ZKFC and namenode logs, I can't get a namenode to take over a dying namenode.

Does anyone have any idea how to help me?

Many thanks for your help :)

zoo.cfg