Check SFTP Availability With check_sftp_avail In Nagios

Thank's, it's perfect and secure (without login/passwd). If you have this issue : [nagios@supervision plugins]# ./check_sftp -p 22 -H 192.168.0.1 WARNING: Host key verification failed - unable to authenticate server Solve it by add the RSA Fingerprint : [nagios@supervision plugins]# sftp maintenance@192.168.0.1 Connecting to 192.168.90.126... The authenticity of host '192.168.90.126 (192.168.90.126)' can't be established. RSA key fingerprint is xx:xx:xx:xx:xx:x:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.0.1' (RSA) to the list of known hosts.