andrew@localhost: Permission denied (publickey,password,keyboard-interactive).

ssh localhost沒有設置免密碼登入

ssh localhost Password: Last login: Wed May 20 10:48:23 2020 from ::1

ssh-kengen生成密碼之后

ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/Users/andrew/.ssh/id_rsa): /Users/andrew/.ssh/id_rsa already exists. Overwrite (y/n)? y Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /Users/andrew/.ssh/id_rsa. Your public key has been saved in /Users/andrew/.ssh/id_rsa.pub. The key fingerprint is: SHA256:FOWMvClmbKSG99685SZmFb/oPUyipbqHzKK7AVJlt4M andrew@macbook The key's randomart image is: +---[RSA 3072]----+ | o . ... | | o o o = | | . E + + o | | . . + o o. | |o . | | ++ .+*+=o .. | +----[SHA256]-----+

ssh-copy-id localhost即可

ssh-copy-id localhost /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/Users/andrew/.ssh/id_rsa.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 Password:Number of key(s) added: 1Now try logging into the machine, with: "ssh 'localhost'" and check to make sure that only the key(s) you wanted were added.

現在開啟hadoop 進程就沒問題

start-all.sh WARNING: Attempting to start all Apache Hadoop daemons as andrew in 10 seconds. WARNING: This is not a recommended production deployment configuration. WARNING: Use CTRL-C to abort. Starting namenodes on [localhost] Starting datanodes Starting secondary namenodes [macbook] 2020-05-20 10:49:50,936 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable Starting resourcemanager Starting nodemanagers andrew@1macbook:~#jps 24834 TaskManagerRunner 24581 StandaloneSessionClusterEntrypoint 35211 TaskManagerRunner 60780 Application 60781 Application 81487 ResourceManager 38287 28242 TaskManagerRunner 3987 NameNode 4244 SecondaryNameNode 4087 DataNode 4567 NodeManager 4664 Jps 72059

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