Octavia has a PING type health monitor. Health monitors of type PING only check if the member is reachable and responds to ICMP echo requests. It will not detect if your application running on that instance is healthy or not. Its usage is discouraged and not supported in OSP. Upstream documentation provides more context: https://docs.openstack.org/octavia/latest/user/guides/basic-cookbook.html#other-heath-monitors
Linked to the upstream patch where I try to clarify the PING health monitor.
Hi, RHOSP 16.0 customers can now see this update to the "Networking Guide" here: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.0/html-single/networking_guide/index#sec-octavia --Greg