SSH Key Authentication
Revision as of 22:57, 27 August 2016 by Ravi89@uab.edu (talk | contribs) (→SSH Secure Shell Client)
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These instructions assist existing users of Cheaha in getting access to Big Green / Cheaha2.
Mac OS X
- On your Mac open Terminal application.
- Run the following command on your terminal:
ssh-keygen -t rsa
- You can put a passphrase for your SSH key ( Not mandatory but highly recommended)
- A id_rsa.pub file would have been created.
- Open the file by running less ~/.ssh/id_rsa.pub and copy the content.
- Press q to exit out of the file.
- Now SSH to your cheaha.uabgrid.uab.edu account , and paste the content in ~/.ssh/authorized_keys using your favorite editor.
- Now log out from cheaha.uabgrid.uab.edu
- Run
ssh blazerid@cheaha.rc.uab.edu
- You should have been able to login to Big Green.
Linux
- On your linux machine open Terminal application.
- Run the following command on your terminal:
ssh-keygen -t rsa
- You can put a passphrase for your SSH key ( Not mandatory but highly recommended)
- A id_rsa.pub file would have been created.
- Open the file by running less ~/.ssh/id_rsa.pub and copy the content.
- Press q to exit out of the file.
- Now SSH to your cheaha.uabgrid.uab.edu account , and paste the content in ~/.ssh/authorized_keys using your favorite editor.
- Now log out from cheaha.uabgrid.uab.edu
- Run
ssh blazerid@cheaha.rc.uab.edu
- You should have been able to login to Big Green.
Windows
Putty
SSH Secure Shell Client
- In SSH Secure Shell, from the Edit menu, select Settings...
- In the window that opens, select Global Settings, then User Authentication, and then Keys.
- Under "Key pair management", click Generate New.... In the window that appears, click Next.
- In the Key Generation window that appears:
- From the drop-down list next to Key Type:, select from the following:
- If you want to take less time to initially generate the key, select DSA.
- If you want to take less time during each connection for the server to verify your key, select RSA.
- From the the drop-down list next to Key Length:, select at least 1024. You may choose a greater key length, but the time it takes to generate the key, as well as the time it takes to authenticate using it, will go up.
- From the drop-down list next to Key Type:, select from the following:
- Click Next. The key generation process will start. When it's complete, click Next again.
- In the "File Name:" field, enter a name for the file where SSH Secure Shell will store your private key. Your public key will be stored in a file with the same name, plus a .pub extension.
- Important:
- To complete the key generation process, click Next, and then Finish.
- At the Settings screen, click OK.
- Copy the content of .pub file generated.
- Now SSH to your cheaha.uabgrid.uab.edu account , and paste the content in ~/.ssh/authorized_keys using your favorite editor.
- Now log out from cheaha.uabgrid.uab.edu
- Run
ssh blazerid@cheaha.rc.uab.edu
- You should have been able to login to Big Green.