One common oversight on fresh installs is to not disable the firewall and the selinux. From personal experience, it may help to restart all processes in the command line after the first config export attempt from the web interface (Configuration > Pollers > Export Configurations).
On pollers:
systemctl enable centreon centengine
On Central:
systemctl restart php-fpm httpd24-httpd centreon cbd centengine gorgoned
Otherwise, I might need more information. If your issue hasn't been resolved yet, mind sharing:
- Your centreon version (from the capture I'd guess Centreon 22.04)
- You install medium (from source, packages, OVA/VM)
- Your distro
You may find some more clues in the logs:
PHP error logs
For version using PHP 7.2 or 7.3 on centOs 8 or PHP 8
tail -f /var/log/php-fpm/centreon-error.log
For version using PHP 7.3 on centOs 7
tail -f /var/opt/rh/rh-php73/log/php-fpm/centreon-error.log
For version using PHP 7.2 on centOs 7
tail -f /var/opt/rh/rh-php72/log/php-fpm/centreon-error.log
centreon-engine logs (On Central and on Poller)
tail -f /var/log/centreon-engine/centengine.log
centreon-broker logs (On Central)
tail -f /var/log/centreon-broker/central-broker-master.log
centreon gorgone logs (On Central and on Poller)
tail -f /var/log/centreon-gorgone/gorgoned.log