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PODisabling unidentified host confirmation when connecting to Amazon EC2 instances using SSH
 

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    <p>I am writing a script using boto and Python to automatically launch an Amazon EC2 instance and interact with it using SSH. Everything works fine except that every time I establish the connection, SSH prompts me to confirm the authenticity of the host like this:</p> <pre><code>The authenticity of host 'ec2-174-129-121-25.compute-1.amazonaws.com (174.129.121.25)' can't be established. RSA key fingerprint is 26:09:bd:21:4f:55:20:3f:0d:fc:5f:cc:3e:08:30:db. Are you sure you want to continue connecting (yes/no)? </code></pre> <p>My SSH command is:</p> <pre><code>ssh -i ssh2.pem root@ec2-174-129-121-25.compute-1.amazonaws.com </code></pre> <p>Since every EC2 instance is a new host, I have to confirm this every time, but I want an automatic script without any user input. What is the best solution?</p>
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