在配置SSH免密登錄時報錯：/usr/bin/ssh-copy-id: ERROR: failed to open ID file '/root/.pub': 沒有那個文件或目錄
問題
1 [root@hadoop1 sbin]# ssh-copy-id hadoop1 2 3 /usr/bin/ssh-copy-id: ERROR: failed to open ID file '/root/.pub': 沒有那個文件或目錄 4 (to install the contents of '/root/.pub' anyway, look at the -f option)
解決方法
1 [root@hadoop1 sbin]# ssh-keygen -t dsa 2 Generating public/private dsa key pair. 3 Enter file in which to save the key (/root/.ssh/id_dsa): 4 Enter passphrase (empty for no passphrase): 5 Enter same passphrase again: 6 Your identification has been saved in /root/.ssh/id_dsa. 7 Your public key has been saved in /root/.ssh/id_dsa.pub. 8 The key fingerprint is: 9 SHA256:eNitxI+ZXMbqTHnZzQnql31bC+klM1ivGdhCQRssWhg root@hadoop1 10 The key's randomart image is: 11 +---[DSA 1024]----+ 12 | Eo .o | 13 | . o..o | 14 | o .o | 15 | * o . | 16 | o S =... | 17 | + @.+=+o. | 18 | X =+.@+o.| 19 | + o = @ +| 20 | o .. + +.| 21 +----[SHA256]-----+
再次 ssh-copy-id hadoop1
1 [root@hadoop1 sbin]# ssh-copy-id hadoop1 2 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_dsa.pub" 3 /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed 4 /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 5 root@hadoop1's password: 6 7 Number of key(s) added: 1 8 9 Now try logging into the machine, with: "ssh 'hadoop1'" 10 and check to make sure that only the key(s) you wanted were added.