I recently updated Centreon to 20.10.18. Everything seemed to run fine, until I generated new config files and restarted the poller. I found that many contacts were no longer being included in the config files. I discovered that many contacts had their Enable Notifications (contact_enable_notifications in the database) field set to NULL. These contacts were not included in the configuration files. Setting the Enable Notifications to any of the three values fixed it.
Has anyone else hit this? Is it a known bug? I’m not sure how those contacts had their Enable Notifications field set like that.