SSH密钥:“对于'id_rsa.pub'的权限0644太开放了

我在我的mac上生成一个ssh密钥对,并将公钥添加到我的ubuntu服务器(实际上,它是我的mac上的一个虚拟机),但是当我尝试loginubuntu服务器时,它说:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0644 for '/Users/tudouya/.ssh/vm/vm_id_rsa.pub' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. bad permissions: ignore key: /Users/tudouya/.ssh/vm/vm_id_rsa.pub Permission denied (publickey,password). 

我已经尝试了很多方法来解决这个问题,改变密钥文件模式,改变文件夹模式,作为一些答案在stackoverflow,但它不起作用。
密钥文件权限:

 vm dir: drwxr-xr-x 4 tudouya staff 136 4 29 10:37 vm key file: -rw------- 1 tudouya staff 1679 4 29 10:30 vm_id_rsa -rw-r--r-- 1 tudouya staff 391 4 29 10:30 vm_id_rsa.pub 

请给我一些想法… =========================================

我将主机信息写入ssh_config:

 Host ubuntuvm Hostname 10.211.55.17 PreferredAuthentications publickey IdentityFile /Users/tudouya/.ssh/vm/vm_id_rsa.pub 

我运行命令“ssh -v ubuntuvm”,它显示:

 ssh -v ubuntuvm OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: /etc/ssh_config line 103: Applying options for * debug1: /etc/ssh_config line 175: Applying options for ubuntuvm debug1: Connecting to 10.211.55.17 [10.211.55.17] port 22. debug1: Connection established. debug1: identity file /Users/tudouya/.ssh/vm/vm_id_rsa.pub type 1 debug1: identity file /Users/tudouya/.ssh/vm/vm_id_rsa.pub-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.2 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1p1 Ubuntu-8 debug1: match: OpenSSH_6.6.1p1 Ubuntu-8 pat OpenSSH* debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5-etm@openssh.com none debug1: kex: client->server aes128-ctr hmac-md5-etm@openssh.com 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: Server host key: RSA 55:6d:4f:0f:23:51:ac:8e:70:01:ec:0e:62:9e:1c:10 debug1: Host '10.211.55.17' is known and matches the RSA host key. debug1: Found key in /Users/tudouya/.ssh/known_hosts:54 debug1: ssh_rsa_verify: signature correct 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,password debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/tudouya/.ssh/vm/vm_id_rsa.pub debug1: Server accepts key: pkalg ssh-rsa blen 279 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0644 for '/Users/tudouya/.ssh/vm/vm_id_rsa.pub' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. bad permissions: ignore key: /Users/tudouya/.ssh/vm/vm_id_rsa.pub debug1: No more authentication methods to try. Permission denied (publickey,password). 
 debug1: identity file /Users/tudouya/.ssh/vm/vm_id_rsa.pub type 1 

看来你正在尝试使用错误的密钥文件。 带有“.pub”扩展名的文件是公钥文件。 没有“.pub”扩展名的相应文件是私钥文件。 运行ssh客户端连接到远程服务器时,必须将私钥文件提供给ssh客户端。

从debugging跟踪来看,你可能在文件/etc/ssh_config有一行,如下所示:

 IdentityFile .../.ssh/vm/vm_id_rsa.pub 

您需要从文件名中删除“.pub”扩展名:

 IdentityFile .../.ssh/vm/vm_id_rsa 

我build议你这样做:

  chmod 400〜/ .ssh / id_rsa 

对我来说工作很好。

密钥应该是login用户可读的。

尝试这个:

 cd ~/.ssh chmod 400 ~/.ssh/Key file chmod 400 ~/.ssh/vm_id_rsa.pub 
 chmod 400 path/to/filename 

这为我工作。 当我做这个文件时,我可以连接到我的EC2实例

chmod 400 /etc/ssh/*适用于我。

那些提出chmod 400 id_rsa.pub的人听起来没有任何问题。 op很有可能使用pub key 而不是 private key来ssh。

所以它可能就像ssh -i /Users/tudouya/.ssh/vm/vm_id_rsa (the private key) user@host来解决它一样简单。

我删除了.pub file ,它工作。