34 lines
1.3 KiB
Markdown
34 lines
1.3 KiB
Markdown
---
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title: How to use Authorized Keys to Create a Passwordless SSH Connection
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date: 2012-02-01
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excerpt: How to generate a SSH key, and how to use to log in to a server using SSH without entering a password.
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tags:
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- linux
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- ssh
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---
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If you're accessing Linux servers or automating tasks between servers, rather
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than having to enter your user password every time, you can also use SSH public
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key authentication. This is a simple process that involves creating a local key
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and storing it within the _authorized_keys_ file on the remote server.
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1. Check if you already have a SSH key. `$ ssh-add -L`
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1. If you don't have one, create one. `$ ssh-keygen`
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1. Upload the key onto the server. Replace _myserver_ with the hostname or IP
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address of your remote server. `$ ssh-copy-id myserver`
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If you're using Mac OS X and you don't have ssh-copy-id installed, download and
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install [Homebrew](http://mxcl.github.com/homebrew 'Homebrew') and run the
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`brew install ssh-copy-id` command.
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If successful, you should now see a message like:
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> Now try logging into the machine, with "ssh 'myserver'", and check in:
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>
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> ~/.ssh/authorized_keys
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>
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> to make sure we haven't added extra keys that you weren't expecting.
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Now the next time that you SSH onto the server, it should log you in without
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prompting you for your password.
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