ssh passless
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Notes for video: http://www.youtube.com/watch?v=LlGL-uBSe6M
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## ssh passwordless login
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A. generate a public key ( this will create id_rsa / id_rsa.pub files in ~/.ssh folder )
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ssh-keygen
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# ex: prompt to comeplete
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Generating public/private rsa key pair.
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Enter file in which to save the key (/home/jsmith/.ssh/id_rsa):[Press Enter key]
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Enter passphrase (empty for no passphrase): [Press Enter key]
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Enter same passphrase again: [Pess Enter key]
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Your identification has been saved in /home/heoyea/.ssh/id_rsa.
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Your public key has been saved in /home/heoyea/.ssh/id_rsa.pub.
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The key fingerprint is:
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33:b3:fe:af:95:95:18:11:31:d5:de:96:2f:f2:35:f9 heoyea-core@.192.168.1.100
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B1. copy local pub key to server pc (method 1)
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# this will send pub key and create ~/.ssh/authorized_keys folder on server pc
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# Note: ssh-copy-id command will append keys, not overwrite it ( good for multiple keys)
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ssh-copy-id -i ~/.ssh/id_rsa.pub heoyea-core@192.168.1.100
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B2. copy local pub key to server pc (method 2)
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# send keys to server
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scp ~/.ssh/id_rsa.pub heoyea-core@192.168.1.100:/tmp/
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# login to server pc then append keys manually
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cat /tmp/id_rsa.pub >> ~/.ssh/authorized_keys
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rm -f /tmp/id_rsa.pub
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