我想使用SSH公钥实现免密码SSH登陆服务器，操作步骤完全按照
http://bbs.chinaunix.net/thread-343905-1-1.html 里面介绍的来进行，但是设置完之后发现还是需要输入密码。以下是 ssh -v 给出的信息：
代码:
OpenSSH_6.8p1, OpenSSL 1.0.2a 19 Mar 2015
debug1: Connecting to 124.17.27.143 [124.17.27.143] port 22.
debug1: Connection established.
debug1: identity file /home/bill/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bill/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bill/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bill/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bill/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bill/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bill/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/bill/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.8
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr umac-64@openssh.com none
debug1: kex: client->server aes128-ctr umac-64@openssh.com none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<3072<8192) sent
debug1: got SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: got SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: ssh-rsa SHA256:tVg3VPf1nFqCv+GCLEQ176FBgoXoCcXDmFugq0YxaM8
debug1: Host '124.17.27.143' is known and matches the RSA host key.
debug1: Found key in /home/bill/.ssh/known_hosts:1
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,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/bill/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Trying private key: /home/bill/.ssh/id_dsa
debug1: Trying private key: /home/bill/.ssh/id_ecdsa
debug1: Trying private key: /home/bill/.ssh/id_ed25519
debug1: Next authentication method: password
zhut@124.17.27.143's password:
求问是哪里出问题了？（本来应该发在服务器板块里面，但是想借一下本版人气，请见谅）
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