Hadoop Database安装手册

殇帝刘玢你

hadoop@bdi:~$ ssh-keygen -t rsa　　Generating public/private rsa key pair.
　　Enter file in which to save the key (/home/hadoop/.ssh/id_rsa):
　　Created directory '/home/hadoop/.ssh'.
　　Enter passphrase (empty for no passphrase):
　　Enter same passphrase again:

　　Your>　　Your public key has been saved in /home/hadoop/.ssh/id_rsa.pub.
　　The key fingerprint is:
　　SHA256:8a7/pCryrmEaTS0Gy/Vm0IdJjPt2DJGlXsmBRz82jK8 hadoop@bdi
　　The key's randomart image is:
　　+---[RSA 2048]----+
　　|     o.=+        |
　　|    .o==.*       |
　　|  . o.=oB *      |
　　| . +.=.o = o     |
　　|  o +.*oS o      |
　　|   + +o oo       |
　　|  . +. .E . .    |
　　|   +...  . o     |
　　|  . .=o.ooo..    |
　　+----[SHA256]-----+
　　hadoop@bdi:~$ cd .ssh/

　　hadoop@bdi:~/.ssh$ ssh-copy-id -i>　　/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "id_rsa.pub"
　　The authenticity of host 'localhost (127.0.0.1)' can't be established.
　　ECDSA key fingerprint is SHA256:1tE3j//p5LSl88OgjJBzZQHvOaHayRDoRk0qp3J3ABk.
　　Are you sure you want to continue connecting (yes/no)? yes
　　/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
　　hadoop@localhost's password:
　　Number of key(s) added: 1
　　Now try logging into the machine, with:   "ssh 'localhost'"
　　and check to make sure that only the key(s) you wanted were added.