Hey all,
Having a weird ssh issue I'd like some opinions on.
If I have my home directory mounted on the NFS server itself, I get permission denied when I try to ssh into it. The correct permissions and ownership are on the home directory, ssh directory and the authorized_users file.
Here's what a verbose ssh session looks like:
#ssh -v bluethundr@nfs1.example.com OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: Connecting to nfs1.example.com [162.243.109.94] port 22. debug1: Connection established. debug1: identity file /Users/TimothyDunphy/.ssh/id_rsa type 1 debug1: identity file /Users/TimothyDunphy/.ssh/id_rsa-cert type -1 debug1: identity file /Users/TimothyDunphy/.ssh/id_dsa type -1 debug1: identity file /Users/TimothyDunphy/.ssh/id_dsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.2 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1 debug1: match: OpenSSH_6.6.1 pat OpenSSH* debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5-etm@openssh.com none debug1: kex: client->server aes128-ctr hmac-md5-etm@openssh.com 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: Server host key: RSA f7:06:1a:56:2f:0e:1b:bd:7b:e6:de:8c:9a:88:ea:09 debug1: Host 'nfs1.example.com' is known and matches the RSA host key. debug1: Found key in /Users/TimothyDunphy/.ssh/known_hosts:19 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic debug1: Next authentication method: publickey debug1: Offering RSA public key: /Users/TimothyDunphy/.ssh/id_rsa debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic debug1: Trying private key: /Users/TimothyDunphy/.ssh/id_dsa debug1: No more authentication methods to try. Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
And I see this message in the secure log:
Jul 13 23:09:28 nfsdb1 sshd[15305]: Connection closed by xx.xx.xx.xx [preauth]
The IP that I xxx'd out is my client IP
Here's the permissions and ownership on the directories and files:
#ls -ld /home/bluethundr/ /home/bluethundr/.ssh /home/bluethundr/.ssh/authorized_keys
drwxr-x---. 37 bluethundr bluethundr 4096 Jul 13 20:57 /home/bluethundr/
drw-------. 3 bluethundr bluethundr 4096 Jun 15 17:22 /home/bluethundr/.ssh
-rw-------. 1 bluethundr bluethundr 2614 Jun 15 17:22 /home/bluethundr/.ssh/authorized_keys
SELinux is set to permissve:
#getenforce Permissive
If I unmount the nfs home directory I am able to log in:
[root@nfs1:~] #umount -l /home [root@nfs1:~] #
#ssh bluethundr@nfs1.example.com Last login: Mon Jul 13 23:08:35 2015 from ool-2f126f64.dyn.optonline.net -bash-4.2$
The permissions on the non-nfs home directory are the same as the NFS mounted home directory:
#ls -ld /home/bluethundr/ /home/bluethundr/.ssh /home/bluethundr/.ssh/authorized_keys drwxr-x---. 37 bluethundr bluethundr 4096 Jul 13 20:57 /home/bluethundr/ drw-------. 3 bluethundr bluethundr 4096 Jun 15 17:22 /home/bluethundr/.ssh -rw-------. 1 bluethundr bluethundr 2614 Jun 15 17:22 /home/bluethundr/.ssh/authorized_keys
As soon as I mount it back, the issue returns and I am unable to ssh in:
#ssh bluethundr@nfs1.example.com Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
I'd really appreciate any ideas you guys may have as to why this is happening!!
Thanks, Tim