Passwordless SSH problem?
Dear masters,
Let me state my problem: I have a 5-node PC cluster, all running Gentoo Linux 2005.0. On the master node, the /home and /opt directories are exported as NFS, which are mounted on the /home and /opt directories of the four slave nodes, respectively. I created several normal users with their home directories located in /home on the master node, so that it can be seen on all other nodes. Then, I did the following for each user to setup passwordless ssh: 1. ssh-keygen -t rsa (withour setting the passphrase) 2. cd ~/.ssh 3. cp .id_rsa.pub authorized_keys2 To this point, everything is ok. I can get passwordless ssh for all these users. Then I created a special user, whose home directory is in /opt. After I did the same thing as above, the passwordless ssh doesn't work. I see "Connection closed by 192.168.1.101" when I tried to ssh this machine. I checked the log file on 192.168.1.101. There is no record for this connection. After I remove the authorized_keys2 file in .ssh, I can log in this machine by providing a password. Hope I state my problem clearly. Any comments are greatly appreciated. YY |
Perhaps your special user isn't allowed to run ssh.
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But I can ssh to the slave nodes if I delete the publice key file....
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Is the export file given the same options, and fstab mounting them with the same options?
If you: ls -ld your /home and /opt directories, both on the server and on the NFS mounted points, do you get the same permissions? Cool |
Thanks for your reply. Below is content of /etc/exports.
/opt 192.168.1.0/255.255.255.0(async,no_subtree_check,rw) /home 192.168.1.0/255.255.255.0(async,no_subtree_check,rw) "ls -ld" shows the same permission for /home and /opt. Below is the output from "ssh -v node-1", seems no error message. OpenSSH_3.9p1, OpenSSL 0.9.7e 25 Oct 2004 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to node-1 [192.168.1.101] port 22. debug1: Connection established. debug1: identity file /opt/tccmp/.ssh/identity type -1 debug1: identity file /opt/tccmp/.ssh/id_rsa type 1 debug1: identity file /opt/tccmp/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_3.9p1 debug1: match: OpenSSH_3.9p1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_3.9p1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 none debug1: kex: client->server aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host 'node-1' is known and matches the RSA host key. debug1: Found key in /opt/tccmp/.ssh/known_hosts:1 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Next authentication method: publickey debug1: Trying private key: /opt/tccmp/.ssh/identity debug1: Offering public key: /opt/tccmp/.ssh/id_rsa Connection closed by 192.168.1.101 |
passwordless ssh login
I am trying to ssh from a windows system to MAC. What do I need to do so that I can ssh from windows to MAC without entering the user's password.
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