针对Hadoop安装OSX，对ssh到localhost进行故障排除

Question

Hadoop的部分安装需要通过ssh与localhost进行无密码连接。说明相当简单

$ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
$ ssh -vv localhost
OpenSSH_6.9p1, LibreSSL 2.1.8
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 20: Applying options for *
debug1: /etc/ssh/ssh_config line 102: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to localhost [::1] port 22.
debug1: Connection established.
debug1: identity file /Users/alexis/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/alexis/.ssh/id_rsa-cert type -1
debug1: identity file /Users/alexis/.ssh/id_dsa type 2
debug1: key_load_public: No such file or directory
debug1: identity file /Users/alexis/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/alexis/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/alexis/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/alexis/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/alexis/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.9
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.9
debug1: match: OpenSSH_6.9 pat OpenSSH* compat 0x04000000
debug2: fd 5 setting O_NONBLOCK
debug1: Authenticating to localhost:22 as 'alexis'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: [e-mail],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: [e-mail],[e-mail],[e-mail],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],ssh-ed25519,ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: [e-mail],aes128-ctr,aes192-ctr,aes256-ctr,[e-mail],[e-mail],arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail]
debug2: kex_parse_kexinit: [e-mail],aes128-ctr,aes192-ctr,aes256-ctr,[e-mail],[e-mail],arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[e-mail]
debug2: kex_parse_kexinit: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-sha1,[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-sha1,[e-mail],[e-mail],[e-mail],[e-mail],hmac-md5,hmac-ripemd160,[e-mail],hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,[e-mail],zlib
debug2: kex_parse_kexinit: none,[e-mail],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: [e-mail],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: [e-mail],aes128-ctr,aes192-ctr,aes256-ctr,[e-mail],[e-mail]
debug2: kex_parse_kexinit: [e-mail],aes128-ctr,aes192-ctr,aes256-ctr,[e-mail],[e-mail]
debug2: kex_parse_kexinit: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: kex_parse_kexinit: [e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],[e-mail],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: kex_parse_kexinit: none,[e-mail]
debug2: kex_parse_kexinit: none,[e-mail]
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug1: kex: server->client [e-mail] <implicit> none
debug1: kex: client->server [e-mail] <implicit> none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:AGucouXpG+jf8Y12aK/JI0pKFHPtCjFTqewZIX6Mayk
debug1: Host 'localhost' is known and matches the ECDSA host key.
debug1: Found key in /Users/alexis/.ssh/known_hosts:1
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: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /Users/alexis/.ssh/id_rsa (0x7f8e5be03aa0),
debug2: key: /Users/alexis/.ssh/id_dsa (0x7f8e5be034a0),
debug2: key: /Users/alexis/.ssh/id_ecdsa (0x0),
debug2: key: /Users/alexis/.ssh/id_ed25519 (0x0),
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /Users/alexis/.ssh/id_rsa
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Offering DSA public key: /Users/alexis/.ssh/id_dsa
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Trying private key: /Users/alexis/.ssh/id_ecdsa
debug1: Trying private key: /Users/alexis/.ssh/id_ed25519
debug2: we did not send a packet, disable method
debug1: Next authentication method: keyboard-interactive
debug2: userauth_kbdint
debug2: we sent a keyboard-interactive packet, wait for reply
debug2: input_userauth_info_req
debug2: input_userauth_info_req: num_prompts 1
Password: 

但它一直在询问密码。我尝试了很多事情，但我会尽量缩短时间。

1. 已启用远程日志记录
2. 以防万一我擦干净了我的~/ssh目录，然后生成密钥
3. 出于好奇，我在电脑上尝试了一个普通用户帐户，这些简单的步骤都奏效了
4. 我以前不得不为Git使用ssh，并为一项工作连接到远程服务器
5. 据我所知，/etc/ssh/是全系统的，由于普通用户正在工作，我认为我不必使用它，尽管我确实尝试更改了其中的几个参数，以防万一
6. 我创建RSA和DSA只是为了以防万一
7. 我将~/.ssh/authorized_keys的权限更改为600，但普通用户有644权限，它仍然有效

所以这就是我尝试的步骤的总结。我知道有很多关于这个问题的帖子，但我觉得这不是通常的嫌疑人。也许你可以给我指一个正确的方向，这将有助于找出我的账户和普通账户之间的区别。

Answer 1

好吧，我终于找到了！我刚刚了解了/var/log/system.log，在那里我看到了

不允许用户[me]，因为shell/usr/local/bin/zsh不存在

所以我看了一下

$ file /usr/local/bin/zsh
/usr/local/bin/zsh: broken symbolic link to ../Cellar/zsh/5.1/bin/zsh

断开链接。。。

brew install zsh

等等！