We have a setup as below
BigIP fqdn : app1.bu.company.com
3 redhat servers are under this bigip fqdn
dbsrv01 dbsrv02 dbsrv03
When we ssh app1.bu.company.com, it randomly connects to any of the servers underneath it in roundrobin fashion.
hostkey fingerprint is added to known_hosts of the first server it ssh to (eg. dbsrv01) and login fine.
app1.bu.company.com ssh-rsa hostkey_of_dbsrv01
in next ssh attemps, when bigip tries differnt server (eg. dbsrv03) , the hostkey gets mismatch and ssh fails.
Host key verification failed.
Is there any mechanism for this to establish the ssh connection what ever server the BigIP connects.