An error occurred while logging in after ssh keygen.

The ssh keygen logon is invalid. fixed the problem of setting logon without a password. The error is invalid. ssh-keygen, incorrect setting method: log on to the remote host: mkdir. ssh & chmod 700. ssh local: scp. ssh/id_rsa.pub root @ your_remote_host: the logon result still prompts you to enter the password .... ++ has tried it many times, and the permissions are completely correct... no... later, we found that the correct setting method was: log on to the remote host: mkdir. ssh & chmod 700. ssh local: ssh-copy-id-I. ssh/id_rsa.pub root @ your_remote_host OK ~~ When setting an error, ssh displays the debugging information: ssh-vvv-oPreferredAuthentications = publickey root @ your_remote_host. The debugging information for the error is as follows: Reference OpenSSH_5.2p1, OpenSSL 1.0.1c 10 May 2012 debug1: reading configuration data/usr/local/etc/ssh_config debug2: ssh_connect: needpriv 0 debug1: Connecting to 192.168.0.113 [192.168.0.113] port 22. debug1: Connection established. debug1: identity file ~ /. Ssh/identity type-1 debug3: Not a RSA1 key file/home/gototouch /. ssh/id_rsa. keys: unknown key type '----- BEGIN 'debug3: key_read: missing keytype debug3: key_read: missing whitespace usage: key_read: missing whitespace debug3: key_read: missing whitespace usage: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: Key_read: missing whitespace usage: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace Usage: key_read: missing whitespace usage: Usage: missing whitespace usage: key_read: missing whitespace debug3: key_read: missing whitespace debug2: key_type_from_name: unknown key type '----- END 'debug3: key_read: missing keytype debug1: identi Ty file ~ /. Ssh/id_rsa type 1 debug1: identity file ~ /. Ssh/id_dsa 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_5.2 debug2: fd 3 setting O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT inclued debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256, diffi E-hellman-group-exchange-sha1, diffie-hellman-group14-sha1, diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: ssh-rsa, ssh-dss debug2: aes128-ctr, aes192-ctr, aes256-ctr, arcfour256, arcfour128, 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, aes12 8-cbc, 3des-cbc, blowfish-cbc, cast128-cbc, aes192-cbc, aes256-cbc, arcfour, rijndael-cbc@lysator.liu.se debug2: hmac-md5, hmac-sha1, umac-64@openssh.com, hmac-ripemd160, hmac-ripemd160@openssh.com debug2: kex_parse_kexinit: hmac-sha1-96, hmac-sha1, umac-64@openssh.com, hmac-ripemd160, hmac-ripemd160@openssh.com, hmac-sha1-96, hmac-md5-96 debug2: kex_parse_kexinit: none, zlib @ Openssh.com, zlib debug2: Keys: none, zlib@openssh.com, zlib debug2: kex_parse_kexinit: debug2: Keys: debug2: Keys 0 debug2: Keys: reserved 0 debug2: Keys: 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 debug2: kex_parse_kexinit: aes128-ctr, aes192-ctr, aes256-ctr, arcfour256, arcfour128, aes128-cbc, 3des-cbc, blowfish-cbc, cast128-cbc, aes192-cbc, arcfour, aes256-cbc debug2: rijndael-cbc@lysator.liu.se, aes192-ctr, aes256-ctr, arcfour256, arcfour128, aes128-cbc, 3des-cbc, blowfish-cbc, cast128-cbc, aes192-cbc, aes256-cbc, arcfour, rijndael-cbc@lysator.liu.se debug2: kex_parse_kexi Nit: hmac-md5, hmac-sha1, umac-64@openssh.com, hmac-ripemd160, hmac-ripemd160@openssh.com, hmac-sha1-96 debug2: kex_parse_kexinit: hmac-md5-96, hmac-md5, hmac-sha1, umac-64@openssh.com, hmac-ripemd160, hmac-ripemd160@openssh.com debug2: kex_parse_kexinit: none, zlib@openssh.com debug2: kex_parse_kexinit: none, zlib@openssh.com debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debu G2: Counter 0 debug2: kex_parse_kexinit: reserved 0 debug2: mac_setup: found hmac-md5 debug1: kex: server-> client aes128-ctr hmac-md5 none debug2: mac_setup: found hmac-md5 debug1: kex: client-> server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST (1024 <1024 <8192) sent debug1: expecting includebug2: dh_gen_key: priv key bits set: 121/2 56 debug2: bits set: 499/1024 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting includebug3: check_host_in_hostfile: filename/home/gototouch /. ssh/known_hosts debug3: check_host_in_hostfile: match line 6 debug1: host' 192. 168.0.113 'is known and matches the RSA host key. debug1: Found key in ~ /. Ssh/known_hosts: 6 debug2: bits set: 522/1024 debug1: signature correct debug2: includebug2: set_newkeys: mode 1 debug1: inclusent debug1: expecting includebug2: signature: mode 0 debug1: SSH2_MSG_NEWKEYS inclued debug1: SSH2_MSG_SERVICE_REQUEST sent debug2: service_accept: ssh-userauth debug1: SSH2_MSG_SERVICE_ACCEPT inclued debug2: key :~ /. Ssh/id_rsa (0x15fce10) debug2: key: ubuntuhost@gmail.com (0x1604210) debug2: key :~ /. Ssh/identity (nil) debug2: key :~ /. Ssh/id_dsa (nil) debug1: Authentications that can continue: publickey, gssapi-keyex, gssapi-with-mic, password debug3: start over, passed a different list publickey, gssapi-keyex, gssapi-with-mic, password debug3: preferred publickey debug3: inclupublickey debug3: remaining preferred: Signature: inclupublickey identifier: Next authentication method: publickey debug1: Offering p Ublic key :~ /. Ssh/id_rsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey, gssapi-keyex, gssapi-with-mic, password debug1: offering public key: ubuntuhost@gmail.com debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey, gssapi-keyex, gssapi-with-mic, password debu G1: Trying private key :~ /. Ssh/identity debug3: no such identity :~ /. Ssh/identity debug1: Trying private key :~ /. Ssh/id_dsa debug3: no such identity :~ /. Ssh/id_dsa debug2: we did not send a packet, disable method debug1: No more authentication methods to try. permission denied (publickey, gssapi-keyex, gssapi-with-mic, password ). note: I carefully read the steps of/usr/bin/ssh-copy-id and found the role of the centos restorecon command, the following method can be used to log on without a password: Remote Execution: mkdir. ssh & chmod 700. local ssh execution: cat ~ /. Ssh/id_rsa.pub | ssh root @ your_host 'cat->. ssh/authorized_keys 'Remote Execution: restorecon. ssh. ssh/authorized_keys the last step is a guarantee of success.