我尝试设置无密码的ssh b / w A到B和B到A。
在两台计算机上使用ssh-keygen -trsa生成公钥和私钥。
使用ssh-copy-id实用程序将公钥从A复制到B以及B复制到A。
无密码ssh的工作时间从A到B，not从B到A。
我已经检查了〜/ ssh /文件夹的权限，看起来很正常。
A's .ssh文件夹权限：
-rw------- 1 root root 13530 2011-07-26 23:00 known_hosts
-rw------- 1 root root 403 2011-07-27 00:35 id_rsa.pub
-rw------- 1 root root 1675 2011-07-27 00:35 id_rsa
-rw------- 1 root root 799 2011-07-27 00:37 authorized_keys
drwxrwx--- 70 root root 4096 2011-07-27 00:37 ..
drwx------ 2 root root 4096 2011-07-27 00:38 .
B's .ssh文件夹权限：
-rw------- 1 root root 884 2011-07-07 13:15 known_hosts
-rw-r--r-- 1 root root 396 2011-07-27 00:15 id_rsa.pub
-rw------- 1 root root 1675 2011-07-27 00:15 id_rsa
-rw------- 1 root root 2545 2011-07-27 00:36 authorized_keys
drwxr-xr-x 8 root root 4096 2011-07-06 19:44 ..
drwx------ 2 root root 4096 2011-07-27 00:15 .
A是一个ubuntu 10.04（OpenSSH_5.3p1 Debian-3ubuntu4，OpenSSL 0.9.8k 2009年3月25日）B是一个debian机器（OpenSSH_5.1p1 Debian-5，OpenSSL 0.9.8g 19 2007年10月）
来自A：
#ssh B
工作正常。
来自B：
#ssh -vvv A
...
...
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /root/.ssh/identity ((nil))
debug2: key: /root/.ssh/id_rsa (0x7f1581f23a50)
debug2: key: /root/.ssh/id_dsa ((nil))
debug3: Wrote 64 bytes for a total of 1127
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred gssapi-keyex,gssapi-with-mic,gssapi,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/identity
debug3: no such identity: /root/.ssh/identity
debug1: Offering public key: /root/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug3: Wrote 368 bytes for a total of 1495
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /root/.ssh/id_dsa
debug3: no such identity: /root/.ssh/id_dsa
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password
root@192.168.122.1's password:
这实际上意味着它没有使用文件/root/id_rsa进行身份验证。
我也在两台机器上运行ssh-add命令。
我的想法已经不多了。 任何帮助将不胜感激。