ssh from bastion not working

[mbjerkness]

When I am either trying to ssh through the bastion or ssh to the bastion and then ssh to one of my internal servers, I am continually getting Host key verification failed.

$ ssh -i ~/.ssh/key-pair.pem ubuntu@EXTERNAL_IP ssh ubuntu@INTERNAL_IP
The authenticity of host 'EXTERNAL_IP (EXTERNAL_IP)' can't be established.
ECDSA key fingerprint is SHA256:SHA_FINGER_PRINT_HERE.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'EXTERNAL_IP' (ECDSA) to the list of known hosts.
Pseudo-terminal will not be allocated because stdin is not a terminal.
Host key verification failed.

[mbjerkness]

I was able to manually FTP the public key up to the bastion host and then I was able to ssh into the internal servers, is this expected?

[Brzhk]

@mbjerkness see https://github.com/BrzhkDev/stack-jenkins/tree/master/ssh_helper
Can't answer for the devs, but there seem to be an incomplete provisioning of the ~/.ssh/config file in the bastion module.
Be careful with my module on the way to create public/private ssh keys. It also only adds the bastion in your local known_hosts file, but not the host instances in the bastion's.