在配置SSH免密登录时报错：/usr/bin/ssh-copy-id: ERROR: failed to open ID file '/root/.pub': 没有那个文件或目录

冷不防 2023-07-05 14:57 30阅读 0赞

# 问题 #

[root@hadoop1 sbin]# ssh-copy-id hadoop1
    
    /usr/bin/ssh-copy-id: ERROR: failed to open ID file '/root/.pub': 没有那个文件或目录
    	(to install the contents of '/root/.pub' anyway, look at the -f option)

# 解决方法 #

[root@hadoop1 sbin]# ssh-keygen -t dsa
    Generating public/private dsa key pair.
    Enter file in which to save the key (/root/.ssh/id_dsa):
    Enter passphrase (empty for no passphrase):
    Enter same passphrase again:
    Your identification has been saved in /root/.ssh/id_dsa.
    Your public key has been saved in /root/.ssh/id_dsa.pub.
    The key fingerprint is:
    SHA256:eNitxI+ZXMbqTHnZzQnql31bC+klM1ivGdhCQRssWhg root@hadoop1
    The key's randomart image is:
    +---[DSA 1024]----+
    |       Eo .o     |
    |       . o..o    |
    |        o .o     |
    |       * o  .    |
    |      o S =...   |
    |       + @.+=+o. |
    |        X =+.@+o.|
    |       + o  = @ +|
    |        o .. + +.|
    +----[SHA256]-----+

# 再次 ssh-copy-id hadoop1 #

[root@hadoop1 sbin]# ssh-copy-id hadoop1
    /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_dsa.pub"
    /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
    /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
    root@hadoop1's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'hadoop1'"
    and check to make sure that only the key(s) you wanted were added.