I have received an email notification from Shinken about two unreachable instances, but the instances have been deleted a while ago. Example:
Notification Type: PROBLEM Host: integration-slave-docker-1046 State: DOWN Address: 172.16.1.115 Info: CRITICAL - Host Unreachable (172.16.1.115) Date/Time: Sun 17 Mar 21:03:27 UTC 2019
integration-slave-docker-1046 has been deleted recently.
Ditto with integration-publishing-02 deleted on March 19th 2019.
I think Shinken generates its configuration automatically. I can not remember from which source though. LDAP?