#Ssh copy key software

Someone could be eavesdropping on you right now (man-in-the-middle attack)! However, now I get the following error: ssh WARNING: POSSIBLE DNS SPOOFING DETECTED! ECDSA host key for datanode1 has changed,Īnd the key for the corresponding IP address 10.240.226.88ĭNS SPOOFING is happening or the IP address for the hostĪnd its host key have changed at the same WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!

UPDATE: I did copy the id_rsa.pub to the authorized_keys file on the destination server. I do not understand what is happening here.

#Ssh copy key software

When I now try to ssh from the first to the second machine I get: ssh -v Debian-4, OpenSSL 1.0.1e ĭebug1: Reading configuration data /etc/ssh/ssh_configĭebug1: /etc/ssh/ssh_config line 19: Applying options for *ĭebug1: Connecting to datanode1 port 22.ĭebug1: identity file /home/hadoop/.ssh/id_rsa type 1ĭebug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048ĭebug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048ĭebug1: identity file /home/hadoop/.ssh/id_rsa-cert type -1ĭebug1: identity file /home/hadoop/.ssh/id_dsa type -1ĭebug1: identity file /home/hadoop/.ssh/id_dsa-cert type -1ĭebug1: identity file /home/hadoop/.ssh/id_ecdsa type -1ĭebug1: identity file /home/hadoop/.ssh/id_ecdsa-cert type -1ĭebug1: Remote protocol version 2.0, remote software version OpenSSH_6.0p1 Debian-4ĭebug1: match: OpenSSH_6.0p1 Debian-4 pat OpenSSH*ĭebug1: Enabling compatibility mode for protocol 2.0ĭebug1: Local version string SSH-2.0-OpenSSH_6.0p1 Debian-4ĭebug1: kex: server->client aes128-ctr hmac-md5 noneĭebug1: kex: client->server aes128-ctr hmac-md5 noneĭebug1: expecting SSH2_MSG_KEX_ECDH_REPLYĭebug1: Server host key: ECDSA 10:54:3e:ec:07:58:48:85:28:40:90:43:e1:8f:3d:f0ĭebug1: Host 'datanode1' is known and matches the ECDSA host key.ĭebug1: Found key in /home/hadoop/.ssh/known_hosts:1ĭebug1: ssh_ecdsa_verify: signature correctĭebug1: Authentications that can continue: publickeyĭebug1: Next authentication method: publickeyĭebug1: Offering RSA public key: /home/hadoop/.ssh/id_rsaĭebug1: Trying private key: /home/hadoop/.ssh/id_dsaĭebug1: Trying private key: /home/hadoop/.ssh/id_ecdsaĭebug1: No more authentication methods to try. The second machine's hadoop user has an empty ~/.ssh directory. On the second machine (datanode1) there is also a user called hadoop. Therefore, on the first machine (namenode), I created a passwordless ssh key for user hadoop and did a cat id_rsa.pub > authorized_keys. I have two machines on Google compute engine and I want to ssh the other server.