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POPermission Denied ( publickey) while ssh to ec2
 

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    <p>I created an EC2 instance and was able to ssh into it properly.</p> <p>THen I stopped the instance </p> <p>After again starting it I got the following error </p> <pre><code>Aloks-MacBook-Pro:AWS alokmandloi$ ssh -i working_key.pem ubuntu@ec2-184-73-22-113.compute-1.amazonaws.com @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the RSA key sent by the remote host is 3d:f2:79:cc:38:66:83:71:1b:86:6c:7e:36:ad:27:bc. Please contact your system administrator. Add correct host key in /Users/alokmandloi/.ssh/known_hosts to get rid of this message. Offending RSA key in /Users/alokmandloi/.ssh/known_hosts:11 RSA host key for ec2-184-73-22-113.compute-1.amazonaws.com has changed and you have requested strict checking. Host key verification failed. </code></pre> <p>I looked up over for a solution and found <a href="http://www.thegeekstuff.com/2010/04/how-to-fix-offending-key-in-sshknown_hosts-file/" rel="nofollow">http://www.thegeekstuff.com/2010/04/how-to-fix-offending-key-in-sshknown_hosts-file/</a></p> <p>Which suggested that i remove the 11th entry in known_hosts. After doing that i get the following error </p> <pre><code>Aloks-MacBook-Pro:AWS alokmandloi$ ssh -v -i working_key.pem ubuntu@ec2-184-73-22-113.compute-1.amazonaws.com OpenSSH_5.9p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: Connecting to ec2-184-73-22-113.compute-1.amazonaws.com [184.73.22.113] port 22. debug1: Connection established. debug1: identity file working_key.pem type -1 debug1: identity file working_key.pem-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.9 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server-&gt;client aes128-ctr hmac-md5 none debug1: kex: client-&gt;server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024&lt;1024&lt;8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: RSA 3d:f2:79:cc:38:66:83:71:1b:86:6c:7e:36:ad:27:bc debug1: Host 'ec2-184-73-22-113.compute-1.amazonaws.com' is known and matches the RSA host key. debug1: Found key in /Users/alokmandloi/.ssh/known_hosts:10 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Trying private key: working_key.pem debug1: read PEM private key done: type RSA debug1: Authentications that can continue: publickey debug1: No more authentication methods to try. Permission denied (publickey). </code></pre>
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