Ubuntu

error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key

Asked by Chris

I am currently running version 14.04 and my /var/log/auth.log is currently being spammed with
Oct 7 17:01:14 vps97758 sshd[19021]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key
Oct 7 17:02:14 vps97758 sshd[19022]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key
Oct 7 17:03:13 vps97758 sshd[19023]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key
Oct 7 17:04:13 vps97758 sshd[19025]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key
Oct 7 17:05:16 vps97758 sshd[19046]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key
Oct 7 17:05:44 vps97758 sshd[19047]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key
Oct 7 17:05:45 vps97758 sshd[19048]: error: Could not load host key: /etc/ssh/ssh_host_ecdsa_key

I am currently using PuTTY aswell as WinSCP.

I currently have the following installed:

Apache2
mysql-server
phpmyadmin
webmin
wordpress
fail2ban

Unsure what the processes relate to as they all point to the same thing of --color=auto
:
root@******:~# ps aux | grep 19449
root 19451 0.0 0.0 10896 916 pts/0 S+ 17:21 0:00 grep --color=auto 19449
root@******:~#

I have also tried with no luck:

ssh-keygen -t ecdsa -b 521 -C "$(whoami)@$(hostname)-$(date -I)"

This is causing me no problems however is spamming of .log file and very irritating

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actionparsnip (andrew-woodhead666) said : 		#1

When you connect use:

ssh -vvvv username@server

What is output?

Obviously you will need to setup SSH keys if you are sing that on the Windows system. I also found this:
http://cygwin.com/ml/cygwin/2011-02/msg00144.html

Revision history for this message
Chris (mrcjshep) said : 		#2

The output is:

OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to vps97758 [92.222.27.211] port 22.
debug1: Connection established.
debug1: permanently_set_uid: 0/0
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug3: Incorrect RSA1 identifier
debug3: Could not load "/root/.ssh/id_ecdsa" as a RSA1 public key
debug1: identity file /root/.ssh/id_ecdsa type 3
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
debug1: match: OpenSSH_6.6.1p1 Ubuntu-2ubuntu2 pat OpenSSH_6.6.1* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "vps97758" from file "/root/.ssh/known_hosts"
debug3: load_hostkeys: found key type ED25519 in file /root/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug3: order_hostkeyalgs: prefer hostkeyalgs: <email address hidden>,ssh-ed25519
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: <email address hidden>,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: <email address hidden>,ssh-ed25519,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,<email address hidden>,<email address hidden>,<email address hidden>,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,<email address hidden>
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,<email address hidden>,<email address hidden>,<email address hidden>,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,<email address hidden>
debug2: kex_parse_kexinit: <email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,hmac-md5,hmac-sha1,<email address hidden>,<email address hidden>,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,<email address hidden>,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: <email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,hmac-md5,hmac-sha1,<email address hidden>,<email address hidden>,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,<email address hidden>,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,<email address hidden>,zlib
debug2: kex_parse_kexinit: none,<email address hidden>,zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: <email address hidden>,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ssh-ed25519
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,<email address hidden>,<email address hidden>,<email address hidden>,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,<email address hidden>
debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,<email address hidden>,<email address hidden>,<email address hidden>,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,<email address hidden>
debug2: kex_parse_kexinit: <email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,hmac-md5,hmac-sha1,<email address hidden>,<email address hidden>,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,<email address hidden>,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: <email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,<email address hidden>,hmac-md5,hmac-sha1,<email address hidden>,<email address hidden>,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,<email address hidden>,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,<email address hidden>
debug2: kex_parse_kexinit: none,<email address hidden>
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_setup: setup <email address hidden>
debug1: kex: server->client aes128-ctr <email address hidden> none
debug2: mac_setup: setup <email address hidden>
debug1: kex: client->server aes128-ctr <email address hidden> none
debug1: sending SSH2_MSG_KEX_ECDH_INIT
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ED25519 e2:7b:07:75:01:93:96:11:e9:79:69:bf:32:2f:90:0a
debug3: load_hostkeys: loading entries for host "vps97758" from file "/root/.ssh/known_hosts"
debug3: load_hostkeys: found key type ED25519 in file /root/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys
debug3: load_hostkeys: loading entries for host "92.222.27.211" from file "/root/.ssh/known_hosts"
debug3: load_hostkeys: found key type ED25519 in file /root/.ssh/known_hosts:2
debug3: load_hostkeys: loaded 1 keys
debug1: Host 'vps97758' is known and matches the ED25519 host key.
debug1: Found key in /root/.ssh/known_hosts:1
debug1: ssh_ed25519_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /root/.ssh/id_rsa ((nil)),
debug2: key: /root/.ssh/id_dsa ((nil)),
debug2: key: /root/.ssh/id_ecdsa (0x7f5dd9a25b90),
debug2: key: /root/.ssh/id_ed25519 ((nil)),
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
debug3: no such identity: /root/.ssh/id_rsa: No such file or directory
debug1: Trying private key: /root/.ssh/id_dsa
debug3: no such identity: /root/.ssh/id_dsa: No such file or directory
debug1: Offering ECDSA public key: /root/.ssh/id_ecdsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /root/.ssh/id_ed25519
debug3: no such identity: /root/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
root@vps97758's password:
debug3: packet_send2: adding 64 (len 58 padlen 6 extra_pad 64)
debug2: we sent a password packet, wait for reply
debug1: Authentication succeeded (password).
Authenticated to vps97758 ([92.222.27.211]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Requesting <email address hidden>
debug1: Entering interactive session.
debug2: callback start
debug2: fd 3 setting TCP_NODELAY
debug3: packet_set_tos: set IP_TOS 0x10
debug2: client_session2_setup: id 0
debug2: channel 0: request pty-req confirm 1
debug1: Sending environment.
debug3: Ignored env TERM
debug3: Ignored env SHELL
debug3: Ignored env SSH_CLIENT
debug3: Ignored env SSH_TTY
debug3: Ignored env USER
debug3: Ignored env LS_COLORS
debug3: Ignored env MAIL
debug3: Ignored env PATH
debug3: Ignored env PWD
debug1: Sending env LANG = en_GB.UTF-8
debug2: channel 0: request env confirm 0
debug3: Ignored env SHLVL
debug3: Ignored env HOME
debug3: Ignored env LOGNAME
debug3: Ignored env SSH_CONNECTION
debug3: Ignored env LESSOPEN
debug3: Ignored env LESSCLOSE
debug3: Ignored env _
debug2: channel 0: request shell confirm 1
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug2: channel_input_status_confirm: type 99 id 0
debug2: PTY allocation request accepted on channel 0
debug2: channel 0: rcvd adjust 2097152
debug2: channel_input_status_confirm: type 99 id 0
debug2: shell request accepted on channel 0

Revision history for this message
Thomas Krüger (thkrueger) said : 		#3

Try:
sudo ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N ''

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