sqstart can't verify authenticity of host when "hostname" is FQDN

[Chirag Bhalgami]

sqstart throws following error message for each node involved:
Note: hostname, ip, and RSA key fingerprint has been changed for security reason.

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Background SQ Startup job (pid: 18288)
The authenticity of host 'hostname.domain.name.com (xx.xx.xx.xx)' can't be established.
RSA key fingerprint is aa:1a:2b:bb:3c:4d:cc:dd:...
Are you sure you want to continue connecting (yes/no)? The authenticity of host 'hostname.domain.name.com (xx.xx.xx.xx)' can't be established.
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Typing yes/no repeats the prompt.
This occurs if hostname has the value of FQDN (fully qualified domain name).

Solution:
Changing the value of "hostname" without domain name resolved the issue.