hey guys,

Yesterday I had no trouble loggging into this database host. But today for some reason I can’t log in using my RSA key and password authentication doesn’t work either.

I am able to log onto the host via console. And I was able to grab the ssh config file. Here it is:

[root@db1 ~]# grep -v ‘#’ /etc/ssh/sshd_config |sed ‘/^\s*$/d’
HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_ecdsa_key SyslogFacility AUTHPRIV
AuthorizedKeysFile .ssh/authorized_keys PasswordAuthentication yes ChallengeResponseAuthentication no GSSAPIAuthentication yes GSSAPICleanupCredentials yes

So I performed a verbose SSH login, and this is what I saw:

#ssh -vvv bluethundr@db1.example.com

OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011

debug1: Reading configuration data /Users/MyUser/.ssh/config

debug1: /Users/MyUser/.ssh/config line 4: Skipping Host block because of negated match for *.example.com

debug1: Reading configuration data /etc/ssh_config

debug1: /etc/ssh_config line 20: Applying options for *

debug2: ssh_connect: needpriv 0

debug1: Connecting to db1.example.com [104.131.222.29] port 22.

debug1: Connection established.

debug3: Incorrect RSA1 identifier

debug3: Could not load “/Users/MyUser/.ssh/id_rsa” as a RSA1 public key

debug1: identity file /Users/MyUser/.ssh/id_rsa type 1

debug1: identity file /Users/MyUser/.ssh/id_rsa-cert type -1

debug1: identity file /Users/MyUser/.ssh/id_dsa type -1

debug1: identity file /Users/MyUser/.ssh/id_dsa-cert type -1

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_6.2

debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1
Debian-5

debug1: match: OpenSSH_6.7p1 Debian-5 pat OpenSSH*

debug2: fd 3 setting O_NONBLOCK

debug3: load_hostkeys: loading entries for host “db1.example.com” from file
“/Users/MyUser/.ssh/known_hosts”

debug3: load_hostkeys: found key type RSA in file
/Users/MyUser/.ssh/known_hosts:172

debug3: load_hostkeys: loaded 1 keys

debug3: order_hostkeyalgs: prefer hostkeyalgs: ssh-rsa-cert-v01@openssh.com, ssh-rsa-cert-v00@openssh.com,ssh-rsa

debug1: SSH2_MSG_KEXINIT sent

debug1: SSH2_MSG_KEXINIT received

debug2: kex_parse_kexinit:
diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1

debug2: kex_parse_kexinit: ssh-rsa-cert-v01@openssh.com, ssh-rsa-cert-v00@openssh.com,ssh-rsa,ssh-dss-cert-v01@openssh.com, ssh-dss-cert-v00@openssh.com,ssh-dss

debug2: kex_parse_kexinit:
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128, aes128-gcm@openssh.com,aes256-gcm@openssh.com
,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour, rijndael-cbc@lysator.liu.se

debug2: kex_parse_kexinit:
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128, aes128-gcm@openssh.com,aes256-gcm@openssh.com
,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour, rijndael-cbc@lysator.liu.se

debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com, hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com, hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com, hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com, hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com, umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160, hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96

debug2: kex_parse_kexinit: hmac-md5-etm@openssh.com, hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com, hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com, hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com, hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com, umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160, hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96

debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib

debug2: kex_parse_kexinit: none,zlib@openssh.com,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: curve25519-sha256@libssh.org
,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1

debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519

debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr, aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com

debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr, aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com

debug2: kex_parse_kexinit: umac-64-etm@openssh.com,umac-128-etm@openssh.com, hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com, hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com
,hmac-sha2-256,hmac-sha2-512,hmac-sha1

debug2: kex_parse_kexinit: umac-64-etm@openssh.com,umac-128-etm@openssh.com, hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com, hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com
,hmac-sha2-256,hmac-sha2-512,hmac-sha1

debug2: kex_parse_kexinit: none,zlib@openssh.com

debug2: kex_parse_kexinit: none,zlib@openssh.com

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: found hmac-sha1-etm@openssh.com

debug1: kex: server->client aes128-ctr hmac-sha1-etm@openssh.com none

debug2: mac_setup: found hmac-sha1-etm@openssh.com

debug1: kex: client->server aes128-ctr hmac-sha1-etm@openssh.com none

debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<2048<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug2: dh_gen_key: priv key bits set: 167/320 debug2: bits set: 1025/2048 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: RSA 87:92:08:3f:0d:a2:4b:72:c5:38:27:bb:1e:48:d7:c2 debug3: load_hostkeys: loading entries for host “db1.example.com” from file “/Users/MyUser/.ssh/known_hosts” debug3: load_hostkeys: found key type RSA in file /Users/MyUser/.ssh/known_hosts:172 debug3: load_hostkeys: loaded 1 keys debug3: load_hostkeys: loading entries for host “104.131.222.29” from file “/Users/MyUser/.ssh/known_hosts” debug3: load_hostkeys: found key type RSA in file /Users/MyUser/.ssh/known_hosts:172 debug3: load_hostkeys: loaded 1 keys debug1: Host ‘db1.example.com’ is known and matches the RSA host key. debug1: Found key in /Users/MyUser/.ssh/known_hosts:172 debug2: bits set: 1017/2048 debug1: ssh_rsa_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: /Users/MyUser/.ssh/id_rsa (0x7fb43a404220), debug2: key: /Users/MyUser/.ssh/id_dsa (0x0), debug1: Authentications that can continue: publickey,password debug3: start over, passed a different list publickey,password debug3: preferred 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: Offering RSA public key: /Users/MyUser/.ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password debug1: Trying private key: /Users/MyUser/.ssh/id_dsa debug3: no such identity: /Users/MyUser/.ssh/id_dsa: 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 bluethundr@db1.example.com’s password: Can anyone give me a heads up as to why this is failing? Thanks, Tim