You can try checks provided in 

to troubleshoot

Cool !

I’ve checked 1 to 1

In step 4, I think I find a big problem

Check the logs: they’re located in the /var/log/centreon-broker directory. On the Central, look for the central-broker-master.log file

This is the end of my log file

q2023-09-25T16:45:56.555+02:00] 5core] ]error] failover: global error: mysql_connection: error while starting connection
i2023-09-25T16:46:11.557+02:00] 7sql] 0error] mysql_connection 0x7fe6bc021980: error while starting connection: mysql_connection: The mysql/mariadb database seems not started. Waiting before attempt to connect again: Access denied for user 'centreon'@'localhost' (using password: YES)
……….. (…..and the start to )

how can I check the connection to my SQL database?

Thanks in advance for any help

Bonjour Yannix63, 

Je suis en charge du secteur public chez Centreon, je souhaiterai échanger plus en détails sur la refonte de votre plateforme, 

Avez-vous un mail ou un téléphone sur lequel je puisse vous joindre dans les jours à venir ? 

Merci d’avance 

Sébastien 

@Yannix63 

Is the DB up

systemctl status mariadb