我已经正确设置了 ssh 密钥，并且可以无需密码通过 ssh 进入远程机器。
然而，几个小时前，我的结构部署脚本可以自动进行身份验证，每当我尝试部署到远程机器时，它就会开始要求我输入私钥密码。
即使我输入了密码，它似乎也不关心我是否输入了正确的密码，并会提示系统登录，就好像我根本没有 ssh 密钥一样。
请记住，我是一名开发人员，而不是系统工程师，不熟悉 Fabric 的工作原理。我很可能遗漏了一些显而易见的东西。任何解决方案，甚至是寻找方向的指示都将不胜感激。
这是我从实际部署脚本中衍生出来的校对脚本：
#!/usr/bin/env python2
import sys
from fabric.api import *
from fabric.network import ssh
ssh.util.log_to_file("paramiko.log", 10)
@hosts(['host-ip-address'])
def boot():
env.use_ssh_config = True
env.user = 'userlogin'
env.key_filename = ['~/.ssh/some-public-key.pem']
env.gateway = '[email protected]'
execute(a)
def a():
run('ls')
boot()
以下是来自 paramiko 的日志消息：
DEB [20141007-19:22:50.804] thr=1 paramiko.transport: starting thread (client mode): 0xfe2790L
INF [20141007-19:22:50.847] thr=1 paramiko.transport: Connected (version 2.0, client OpenSSH_6.2)
DEB [20141007-19:22:50.856] thr=1 paramiko.transport: kex algos:[u'ecdh-sha2-nistp256', u'ecdh-sha2-nistp384', u'ecdh-sha2-nistp521', u'diffie-hellman-group-exchange-sha256', u'diffie-hellman-group-exchange-sha1', u'diffie-hellman-group14-sha1', u'diffie-hellman-group1-sha1'] server key:[u'ssh-rsa', u'ssh-dss', u'ecdsa-sha2-nistp256'] client encrypt:[u'aes128-ctr', u'aes192-ctr', u'aes256-ctr', u'arcfour256', u'arcfour128', u'[email protected]', u'[email protected]', u'aes128-cbc', u'3des-cbc', u'blowfish-cbc', u'cast128-cbc', u'aes192-cbc', u'aes256-cbc', u'arcfour', u'[email protected]'] server encrypt:[u'aes128-ctr', u'aes192-ctr', u'aes256-ctr', u'arcfour256', u'arcfour128', u'[email protected]', u'[email protected]', u'aes128-cbc', u'3des-cbc', u'blowfish-cbc', u'cast128-cbc', u'aes192-cbc', u'aes256-cbc', u'arcfour', u'[email protected]'] client mac:[u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'hmac-md5', u'hmac-sha1', u'[email protected]', u'[email protected]', u'hmac-sha2-256', u'hmac-sha2-512', u'hmac-ripemd160', u'[email protected]', u'hmac-sha1-96', u'hmac-md5-96'] server mac:[u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'hmac-md5', u'hmac-sha1', u'[email protected]', u'[email protected]', u'hmac-sha2-256', u'hmac-sha2-512', u'hmac-ripemd160', u'[email protected]', u'hmac-sha1-96', u'hmac-md5-96'] client compress:[u'none', u'[email protected]'] server compress:[u'none', u'[email protected]'] client lang:[u''] server lang:[u''] kex follows?False
DEB [20141007-19:22:50.856] thr=1 paramiko.transport: Ciphers agreed: local=aes128-ctr, remote=aes128-ctr
DEB [20141007-19:22:50.856] thr=1 paramiko.transport: using kex diffie-hellman-group14-sha1; server key type ssh-rsa; cipher: local aes128-ctr, remote aes128-ctr; mac: local hmac-sha1, remote hmac-sha1; compression: local none, remote none
DEB [20141007-19:22:50.903] thr=1 paramiko.transport: Switch to new keys ...
DEB [20141007-19:22:50.907] thr=2 paramiko.transport: Trying key 3433922e6c7bef8672043fbfe07c22f3 from /Users/ganeshwara/.dme/sg-master.pem
DEB [20141007-19:22:50.954] thr=1 paramiko.transport: userauth is OK
INF [20141007-19:22:51.033] thr=1 paramiko.transport: Authentication (publickey) failed.
DEB [20141007-19:22:51.040] thr=2 paramiko.transport: Trying SSH agent key f8f4822cc3d40df79b9f7c79f219c42c
DEB [20141007-19:22:51.045] thr=1 paramiko.transport: userauth is OK
INF [20141007-19:22:51.061] thr=1 paramiko.transport: Authentication (publickey) failed.
DEB [20141007-19:22:51.704] thr=3 paramiko.transport: starting thread (client mode): 0xff0a10L
INF [20141007-19:22:51.723] thr=3 paramiko.transport: Connected (version 2.0, client OpenSSH_6.2)
DEB [20141007-19:22:51.728] thr=3 paramiko.transport: kex algos:[u'ecdh-sha2-nistp256', u'ecdh-sha2-nistp384', u'ecdh-sha2-nistp521', u'diffie-hellman-group-exchange-sha256', u'diffie-hellman-group-exchange-sha1', u'diffie-hellman-group14-sha1', u'diffie-hellman-group1-sha1'] server key:[u'ssh-rsa', u'ssh-dss', u'ecdsa-sha2-nistp256'] client encrypt:[u'aes128-ctr', u'aes192-ctr', u'aes256-ctr', u'arcfour256', u'arcfour128', u'[email protected]', u'[email protected]', u'aes128-cbc', u'3des-cbc', u'blowfish-cbc', u'cast128-cbc', u'aes192-cbc', u'aes256-cbc', u'arcfour', u'[email protected]'] server encrypt:[u'aes128-ctr', u'aes192-ctr', u'aes256-ctr', u'arcfour256', u'arcfour128', u'[email protected]', u'[email protected]', u'aes128-cbc', u'3des-cbc', u'blowfish-cbc', u'cast128-cbc', u'aes192-cbc', u'aes256-cbc', u'arcfour', u'[email protected]'] client mac:[u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'hmac-md5', u'hmac-sha1', u'[email protected]', u'[email protected]', u'hmac-sha2-256', u'hmac-sha2-512', u'hmac-ripemd160', u'[email protected]', u'hmac-sha1-96', u'hmac-md5-96'] server mac:[u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'[email protected]', u'hmac-md5', u'hmac-sha1', u'[email protected]', u'[email protected]', u'hmac-sha2-256', u'hmac-sha2-512', u'hmac-ripemd160', u'[email protected]', u'hmac-sha1-96', u'hmac-md5-96'] client compress:[u'none', u'[email protected]'] server compress:[u'none', u'[email protected]'] client lang:[u''] server lang:[u''] kex follows?False
DEB [20141007-19:22:51.728] thr=3 paramiko.transport: Ciphers agreed: local=aes128-ctr, remote=aes128-ctr
DEB [20141007-19:22:51.728] thr=3 paramiko.transport: using kex diffie-hellman-group14-sha1; server key type ssh-rsa; cipher: local aes128-ctr, remote aes128-ctr; mac: local hmac-sha1, remote hmac-sha1; compression: local none, remote none
DEB [20141007-19:22:51.799] thr=3 paramiko.transport: Switch to new keys ...
DEB [20141007-19:22:51.806] thr=2 paramiko.transport: Trying key 3433922e6c7bef8672043fbfe07c22f3 from /Users/ganeshwara/.dme/sg-master.pem
DEB [20141007-19:22:51.848] thr=3 paramiko.transport: userauth is OK
INF [20141007-19:22:51.932] thr=3 paramiko.transport: Authentication (publickey) failed.
DEB [20141007-19:22:51.938] thr=2 paramiko.transport: Trying SSH agent key f8f4822cc3d40df79b9f7c79f219c42c
DEB [20141007-19:22:51.943] thr=3 paramiko.transport: userauth is OK
INF [20141007-19:22:51.955] thr=3 paramiko.transport: Authentication (publickey) failed.
DEB [20141007-19:22:51.979] thr=3 paramiko.transport: userauth is OK
DEB [20141007-19:22:51.984] thr=3 paramiko.transport: Authentication type (password) not permitted.
DEB [20141007-19:22:51.985] thr=3 paramiko.transport: Allowed methods: [u'publickey']
DEB [20141007-19:22:52.717] thr=1 paramiko.transport: EOF in transport thread
DEB [20141007-19:22:52.794] thr=3 paramiko.transport: EOF in transport thread
编辑：
我的~/.ssh/config
Host gateway
HostName gateway.com
User user
Port 22
IdentityFile ~/.ssh/some-public-key.pem
Host remote-machine
HostName host-ip-address
User userlogin
IdentityFile ~/.ssh/remote-machine.pem
ProxyCommand ssh gateway -W %h:%p
我想澄清一下，在我的本地机器上，我确实可以成功连接到远程机器，如下所示：
# ssh remote-machine