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Old 11-07-2012, 11:57 AM   #1
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Registered: Oct 2012
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SSH keys not working

Hi all,

I have 3 servers with the same configuration using CentOS 6.3, and they all have a common user called user1.

For each server i have created a pair of ssh keys using the command:
ssh-keygen -t rsa
(all fields were left blank)

And after this i have copied the contents of each to each others authorized_keys2 file.

All good so far, but everytime i try to connect between servers it keeps asking me the user1 password.

Any thoughts?

Old 11-07-2012, 05:10 PM   #2
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See secure log. Try disabling selinux. Setenforce 0. Maybe too wide permissions on the ssh folder or keys
Old 11-07-2012, 08:51 PM   #3
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Wink SSH keys & Permissions

The most common issue when copying keys manually to hosts are file permissions.
the .ssh directory should be owned by the user, and have permissions 700 or u=rwx (ls -la ~ | grep ssh should give you a: drwx------)
files contained within the .ssh directory should be set as:
id_rsa - 400 or 600 - 600
known_hosts - 600 or 640

*late addition (thanks linosaurusroot)
and of course your public key entry in the authorized_keys or authorized_keys2 file (i just hardlink the 2)
with permissions 600.

if your key files (private) are readable/writable by anyone else (including group membership) then openssh will deny the use of the keys.
in future, use the ssh-copyid command to upload the files, it will set the correct permissions for you automatically.
Hope that solves your issue.

Last edited by ph0rty; 11-07-2012 at 11:53 PM. Reason: addition of details
Old 11-07-2012, 11:12 PM   #4
Registered: Oct 2012
Distribution: OpenSuSE,RHEL,Fedora,OpenBSD
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authorized_keys2- Y U not use authorized_keys ?


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