![ssh 公钥验证不起作用](https://linux22.com/image/57204/ssh%20%E5%85%AC%E9%92%A5%E9%AA%8C%E8%AF%81%E4%B8%8D%E8%B5%B7%E4%BD%9C%E7%94%A8.png)
我设置了密钥,这样我就可以在机器之间进行 ssh,而无需输入密码,并且一切正常一段时间,但突然间,某些机器上提示我输入密码。我验证了密钥 - 一切似乎都正常。我运行 ssh -v 这是输出。据我所知,密钥已成功验证,那么为什么要求我输入密码???
ssh XXX.XXX.XXX.XXX -v
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to XXX.XXX.XXX.XXX [XXX.XXX.XXX.XXX] port 22.
debug1: Connection established.
debug1: identity file /nethome/username/.ssh/identity type -1
debug1: identity file /nethome/username/.ssh/id_rsa type 1
debug1: identity file /nethome/username/.ssh/id_dsa type 2
debug1: loaded 3 keys
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_4.3
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'XXX.XXX.XXX.XXX' is known and matches the RSA host key.
debug1: Found key in /nethome/username/.ssh/known_hosts:43
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
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: gssapi-with-mic
debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Unspecified GSS failure. Minor code may provide more information
No credentials cache found
debug1: Next authentication method: publickey
debug1: Trying private key: /nethome/username/.ssh/identity
debug1: Offering public key: /nethome/username/.ssh/id_rsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Offering public key: /nethome/username/.ssh/id_dsa
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: password
顺便说一句,我没有看到服务器接受身份验证的消息:
debug1: Server accepts key: pkalg ssh-rsa blen 277
~/.ssh/ 的模式为 700,我尝试运行 ssh-copy-id ,这似乎有效。可以肯定的是,我在两台机器上的 id_rsa.pub 上运行了 md5sum,它们是相同的。此外,目标计算机上的authorized_keys 的校验和与公钥的校验和匹配(因为它是授权密钥中的唯一密钥)。
答案1
事实证明,不仅 .ssh 很重要,$HOME 权限也很重要! $HOME 的权限设置不得高于 751。