如何SSH密碼到本地沒有密碼？

Question

編輯：正是完成了什麼

我需要沒有密碼的SSH本地主機，通常的做法（與公共密鑰）不工作。

user@PC:~$ rm -rf .ssh/* 
user@PC:~$ ssh-keygen -t rsa > /dev/null 
Enter file in which to save the key (/home/user/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
user@PC:~$ ls .ssh/ 
id_rsa id_rsa.pub 
user@PC:~$ ssh-copy-id -i localhost 
The authenticity of host 'localhost (::1)' can't be established. 
RSA key fingerprint is f7:87:b5:4e:31:a1:72:11:8e:5f:d2:61:bd:b3:40:1a. 
Are you sure you want to continue connecting (yes/no)? yes 
Warning: Permanently added 'localhost' (RSA) to the list of known hosts. 
user@localhost's password: 
Now try logging into the machine, with "ssh 'localhost'", and check in: 

    .ssh/authorized_keys 

to make sure we haven't added extra keys that you weren't expecting. 

user@PC:~$ ssh-agent $SHELL 
user@PC:~$ ssh-add -L 
The agent has no identities. 
user@PC:~$ ssh-add 
Identity added: /home/user/.ssh/id_rsa (/home/user/.ssh/id_rsa) 
user@PC:~$ ssh-add -L 
ssh-rsa ...MY KEY HERE 

user@PC:~$ ssh-copy-id -i localhost 
user@localhost's password: 
Now try logging into the machine, with "ssh 'localhost'", and check in: 

    .ssh/authorized_keys 

to make sure we haven't added extra keys that you weren't expecting. 

user@PC:~$ ssh localhost echo 'testing' 
user@localhost's password: 

user@PC:~$ 

因此，你可以看到在最後一個命令它仍然要求密碼！ 我該如何解決這個問題？ Ubuntu的10.04，OpenSSH_5.3p1

EDIT2：

添加一些信息有關的sshd

user@PC:~$ cat /etc/ssh/sshd_config | grep Authentication 
# Authentication: 
RSAAuthentication yes 
PubkeyAuthentication yes 
RhostsRSAAuthentication no 
HostbasedAuthentication no 
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication 
ChallengeResponseAuthentication no 
# PasswordAuthentication yes 

EDIT3：Ading從$導致的ssh -vv本地主機

$ssh -vv localhost 
... 
debug1: Authentications that can continue: publickey,password 
debug1: Next authentication method: publickey 
debug1: Trying private key: /home/user/.ssh/identity 
debug1: Offering public key: /home/user/.ssh/id_rsa 
debug2: we sent a publickey packet, wait for reply 
debug1: Authentications that can continue: publickey,password 
debug1: Trying private key: /home/user/.ssh/id_dsa 
debug2: we did not send a packet, disable method 
debug1: Next authentication method: password 
user@localhost's password: 

Answer 1

我以下3個步驟來創建密碼更少登錄

1. ssh-keygen -t rsa 
Press enter for each line 
2. cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys 
3. chmod og-wx ~/.ssh/authorized_keys 

Answer 2

已經發現了問題。

運行與調試運行的服務器：

$sshd -Dd 

我發現這是不能夠讀取AUTH_KEY

$chmod 750 $HOME 

固定它。

Answer 3

另外可能回答：authorized_keys文件可能存在並且可讀。但是如果它是羣組或世界可寫的，它仍然會提示輸入密碼。這個問題的答案的問題是

chmod og-wx ~/.ssh/authorized_keys 

Answer 4

執行以下步驟

ssh-keygen -t rsa -C "your_email@example.com" 
# Creates a new ssh key, using the provided email as a label 
# Generating public/private rsa key pair. 

使用默認的文件和空密碼（只需在接下來的2個步驟中按回車鍵）

# start the ssh-agent in the background 
eval "$(ssh-agent -s)" 
# Agent pid 59566 
ssh-add 

複製的〜/ .ssh/id_rsa.pub的到的〜/ .ssh/authorized_keys中

確保以下內容的權限

ls -l .ssh/ 
total 20 
-rw-r--r--. 1 swati swati 399 May 5 14:53 authorized_keys 
-rw-r--r--. 1 swati swati 761 Jan 12 15:59 config 
-rw-------. 1 swati swati 1671 Jan 12 15:44 id_rsa 
-rw-r--r--. 1 swati swati 399 Jan 12 15:44 id_rsa.pub 
-rw-r--r--. 1 swati swati 410 Jan 12 15:46 known_hosts 

此外，確保.ssh目錄中的權限。這也是很重要

drwx------. 2 swati swati 4096 May 5 14:56 .ssh 

Answer 5

兩個簡單的步驟：

ssh-keygen -t rsa <Press enter for each line> 
ssh-copy-id localhost 

輸入密碼，你就大功告成了。

Answer 6

這樣做的正確和安全的方法是複製鑰匙，就像這裏所說的。

在其他情況下，sshpass可以得心應手。

sshpass -p raspberry ssh pi@192.168.0.145 

請記住，這是不安全的。即使它是不是在安全的環境中使用它是一個好主意，它可以爲腳本，自動化測試非常有用......

這可以用

ssh -q -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no pi@192.168.0.145 

結合起來，以避免阻止腳本的確認問題從發生。

同樣，只有在不同的機器共享IP且安全性不重要的開發系統中使用它。

https://ownyourbits.com/2017/02/22/easy-passwordless-ssh-with-sshh/

Answer 7

爲接受的答案呢， 如果你encount你需要

ssh-add 

Answer 8

我面臨着同樣的問題，甚至以下的所有建議後

Agent admitted failure to sign using the key. 

問題，但發現問題在於gnome-keyring干擾。

解決方案：

1. 開始搜索，尋找「啓動應用程序」
2. 如果你看到「SSH密鑰代理」，取消勾選
3. 重新啓動計算機，並連接到本地主機。