Ssh初次連線忽略know_hosts詢問

連線新的SSH Client時會因為~/.ssh/know_hosts中無key存在，而會詢問

$ ssh root@my.ip_address
The authenticity of host 'my.ip_address (my.ip_address)' can't be established.
RSA key fingerprint is 2f:64:60:3b:01:54:31:d7:68:f1:ca:50:ee:2a:5c:43.
Are you sure you want to continue connecting (yes/no)?

這時沒有回答yes還真的不給你連線...@@

這在需要自動延展新的server時候，如果遇到這樣的問題...就麻煩拉！

下面有兩個可以避開know_hosts的詢問：

1.連線時候加上參數“-o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no”

ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no username@ip_adreess

2.修改/etc/ssh/ssh_config檔案，打開StrictHostKeyChecking，並設定為no

# Host *

#   ForwardAgent no

#   ForwardX11 no

#   PubkeyAuthentication yes

#   PasswordAuthentication yes

#   FallBackToRsh no

#   UseRsh no

#   BatchMode no

#   CheckHostIP yes

   StrictHostKeyChecking no

#   EscapeChar ~