我在我的mac上生成了一个ssh密钥对,并将公钥添加到我的ubuntu服务器上(实际上,它是我mac上的一个虚拟机),但是当我尝试登录ubuntu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上,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

请给我一些建议…… ========================================= 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

执行命令“ssh -v ubuntu tuvm”,显示如下:

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).

当前回答

SSH密钥是私有的,所以644权限太开放了。

二进制引用来设置权限

 r(read) = 4
 w(write) = 2
 x(execute) = 1

因此,通过将这些数字相加并将求和后的数字传递给chmod命令,我们设置了文件/目录的权限。 第一个数字为所有者设置权限,第二个数字为组,第三个数字为系统上没有文件权限的所有其他用户设置权限。

A permission of 644 means 
(4+2) = read/write permission for the owner
(4) = read permission for the group 
(4) = read permission for all other users 
 

通过更改文件的权限为400使用

chmod 400 <filename>

解决问题。因为它使键的所有者可以只读访问。

裁判:https://www.linux.com/training-tutorials/understanding-linux-file-permissions/

其他回答

在运行以下命令后,它为我工作

sudo chmod 600 /path/to/my/key.pem

对于我来说,id_rsa的默认模式是600,这意味着可读和可写。

当我将这个文件推到git repo并从另一台pc上拉出它后,有时私钥文件的模式变成-rw-r——r——。

当我在指定私钥文件后用ssh拉repo时,它失败了,并提示警告和你一样。以下是我的脚本。

ssh-agent bash -c "ssh-add $PATH_OF_RSA/id_rsa; \
git pull git@gitee.com:someone/somerepo.git "

我只是通过将模式改为600来解决这个问题。

chmod 600 $PATH_TO_RSA/id_rsa

如果您使用的是.ssh/config文件,请尝试

chmod 0400 .ssh/config

然后:

chmod 0400 .ssh/<<KEYFILE_PATH>>

这应该可以达到目的:

chmod 600 id_rsa

在我的例子中,它是一个.pem文件。事实证明这也适用。更改了文件的权限,它工作了。

Chmod 400 ~/.ssh/dev-shared.pem

感谢上面所有帮助过我的人。