[BlueOnyx:03610] Re: ssh hangs after password

Gerald Waugh gwaugh at raqware.com
Wed Feb 17 12:44:04 -05 2010 

Problem solved.

Server was hung up, with errors on some of the hard drive sectors.
Weird, as the only thing we detected was the ssh issue.
We did finally get a good reboot accomplished and all is working


On Wed, 2010-02-17 at 11:56 -0500, Gerald Waugh wrote:
> On Wed, 2010-02-17 at 11:42 -0600, Chuck Tetlow wrote:
> > Have you tried waiting a while?  It may be a reverse DNS lookup is
> > failing (trying to get a name to log the connection).  In which case,
> > it will respond and let you in when it finally times out.  I believe
> > the default timeout is 45 seconds.  But I've seen some hang as long as
> > two/three minutes. 
> 
> No, I have waited hours, and have to close the session manually
> 
> > 
> > Chuck 
> > 
> > 
> > ---------- Original Message ----------- 
> > From: Gerald Waugh <gwaugh at raqware.com> 
> > To: coba-e <coba-e at bluequartz.org>, BlueOnyx General Mailing List
> > <blueonyx at blueonyx.it> 
> > Sent: Wed, 17 Feb 2010 11:15:38 -0500 
> > Subject: [BlueOnyx:03606]  ssh hangs after password 
> > 
> > > Excuse the cross post, looking for an answer. 
> > > ssh into the server, enter password, and hangs. 
> > > Tried with putty and a Linux PC terminal session, 
> > > 
> > > Can't even ^C out, have to close the terminal session. 
> > > here is a debug output of the connection. 
> > > 
> > > >[root at s3 ~]# ssh -vvv -p20200 admin at s5.inscomp.net 
> > > >OpenSSH_3.9p1, OpenSSL 0.9.7a Feb 19 2003 
> > > >debug1: Reading configuration data /etc/ssh/ssh_config 
> > > >debug1: Applying options for * 
> > > >debug2: ssh_connect: needpriv 0 
> > > >debug1: Connecting to s5.inscomp.net [66.121.54.249] port 20200. 
> > > >debug1: Connection established. 
> > > >debug1: permanently_set_uid: 0/0 
> > > >debug1: identity file /root/.ssh/identity type -1 
> > > >debug1: identity file /root/.ssh/id_rsa type -1 
> > > >debug1: identity file /root/.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 
> > > >debug2: fd 3 setting O_NONBLOCK 
> > > >debug1: SSH2_MSG_KEXINIT sent 
> > > >debug1: SSH2_MSG_KEXINIT received 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 
> > > >debug2: kex_parse_kexinit: ssh-rsa,ssh-dss 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc at lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc at lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96 
> > > >debug2: kex_parse_kexinit: none,zlib 
> > > >debug2: kex_parse_kexinit: none,zlib 
> > > >debug2: kex_parse_kexinit: 
> > > >debug2: kex_parse_kexinit: 
> > > >debug2: kex_parse_kexinit: first_kex_follows 0 
> > > >debug2: kex_parse_kexinit: reserved 0 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 
> > > >debug2: kex_parse_kexinit: ssh-rsa,ssh-dss 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc at lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc at lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96 
> > > >debug2: kex_parse_kexinit: 
> > >
> > >hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96 
> > > >debug2: kex_parse_kexinit: none,zlib 
> > > >debug2: kex_parse_kexinit: none,zlib 
> > > >debug2: kex_parse_kexinit: 
> > > >debug2: kex_parse_kexinit: 
> > > >debug2: kex_parse_kexinit: first_kex_follows 0 
> > > >debug2: kex_parse_kexinit: reserved 0 
> > > >debug2: mac_init: found hmac-md5 
> > > >debug1: kex: server->client aes128-cbc hmac-md5 none 
> > > >debug2: mac_init: found hmac-md5 
> > > >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 
> > > >debug2: dh_gen_key: priv key bits set: 124/256 
> > > >debug2: bits set: 513/1024 
> > > >debug1: SSH2_MSG_KEX_DH_GEX_INIT sent 
> > > >debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY 
> > > >debug3: check_host_in_hostfile: filename /root/.ssh/known_hosts 
> > > >debug3: check_host_in_hostfile: match line 5 
> > > >debug3: check_host_in_hostfile: filename /root/.ssh/known_hosts 
> > > >debug3: check_host_in_hostfile: match line 1 
> > > >debug1: Host 's5.inscomp.net' is known and matches the RSA host
> > key. 
> > > >debug1: Found key in /root/.ssh/known_hosts:5 
> > > >debug2: bits set: 500/1024 
> > > >debug1: ssh_rsa_verify: signature correct 
> > > >debug2: kex_derive_keys 
> > > >debug2: set_newkeys: mode 1 
> > > >debug1: SSH2_MSG_NEWKEYS sent 
> > > >debug1: expecting SSH2_MSG_NEWKEYS 
> > > >debug2: set_newkeys: mode 0 
> > > >debug1: SSH2_MSG_NEWKEYS received 
> > > >debug1: SSH2_MSG_SERVICE_REQUEST sent 
> > > >debug2: service_accept: ssh-userauth 
> > > >debug1: SSH2_MSG_SERVICE_ACCEPT received 
> > > >debug2: key: /root/.ssh/identity ((nil)) 
> > > >debug2: key: /root/.ssh/id_rsa ((nil)) 
> > > >debug2: key: /root/.ssh/id_dsa ((nil)) 
> > > >debug1: Authentications that can continue: 
> > > >publickey,gssapi-with-mic,password 
> > > >debug3: start over, passed a different list 
> > > >publickey,gssapi-with-mic,password 
> > > >debug3: preferred 
> > > >gssapi-with-mic,publickey,keyboard-interactive,password 
> > > >debug3: authmethod_lookup gssapi-with-mic 
> > > >debug3: remaining preferred:
> > publickey,keyboard-interactive,password 
> > > >debug3: authmethod_is_enabled gssapi-with-mic 
> > > >debug1: Next authentication method: gssapi-with-mic 
> > > >debug3: Trying to reverse map address 66.121.54.249. 
> > > >debug2: we sent a gssapi-with-mic packet, wait for reply 
> > > >debug1: Authentications that can continue: 
> > > >publickey,gssapi-with-mic,password 
> > > >debug2: we sent a gssapi-with-mic packet, wait for reply 
> > > >debug1: Authentications that can continue: 
> > > >publickey,gssapi-with-mic,password 
> > > >debug2: we did not send a packet, disable method 
> > > >debug3: authmethod_lookup publickey 
> > > >debug3: remaining preferred: keyboard-interactive,password 
> > > >debug3: authmethod_is_enabled publickey 
> > > >debug1: Next authentication method: publickey 
> > > >debug1: Trying private key: /root/.ssh/identity 
> > > >debug3: no such identity: /root/.ssh/identity 
> > > >debug1: Trying private key: /root/.ssh/id_rsa 
> > > >debug3: no such identity: /root/.ssh/id_rsa 
> > > >debug1: Trying private key: /root/.ssh/id_dsa 
> > > >debug3: no such identity: /root/.ssh/id_dsa 
> > > >debug2: we did not send a packet, disable method 
> > > >debug3: authmethod_lookup password 
> > > >debug3: remaining preferred: ,password 
> > > >debug3: authmethod_is_enabled password 
> > > >debug1: Next authentication method: password 
> > > >admin at host.domain.tld's password: 
> > > >debug3: packet_send2: adding 48 (len 61 padlen 19 extra_pad 64) 
> > > >debug2: we sent a password packet, wait for reply 
> > > >debug1: Authentication succeeded (password). 
> > > >debug1: channel 0: new [client-session] 
> > > >debug3: ssh_session2_open: channel_new: 0 
> > > >debug2: channel 0: send open 
> > > >debug1: Entering interactive session. 
> > > >debug2: callback start 
> > > >debug2: client_session2_setup: id 0 
> > > >debug2: channel 0: request pty-req confirm 0 
> > > >debug3: tty_make_modes: ospeed 38400 
> > > >debug3: tty_make_modes: ispeed 38400 
> > > >debug3: tty_make_modes: 1 3 
> > > >debug3: tty_make_modes: 2 28 
> > > >debug3: tty_make_modes: 3 127 
> > > >debug3: tty_make_modes: 4 21 
> > > >debug3: tty_make_modes: 5 4 
> > > >debug3: tty_make_modes: 6 255 
> > > >debug3: tty_make_modes: 7 255 
> > > >debug3: tty_make_modes: 8 17 
> > > >debug3: tty_make_modes: 9 19 
> > > >debug3: tty_make_modes: 10 26 
> > > >debug3: tty_make_modes: 12 18 
> > > >debug3: tty_make_modes: 13 23 
> > > >debug3: tty_make_modes: 14 22 
> > > >debug3: tty_make_modes: 18 15 
> > > >debug3: tty_make_modes: 30 0 
> > > >debug3: tty_make_modes: 31 0 
> > > >debug3: tty_make_modes: 32 0 
> > > >debug3: tty_make_modes: 33 0 
> > > >debug3: tty_make_modes: 34 0 
> > > >debug3: tty_make_modes: 35 0 
> > > >debug3: tty_make_modes: 36 1 
> > > >debug3: tty_make_modes: 37 0 
> > > >debug3: tty_make_modes: 38 1 
> > > >debug3: tty_make_modes: 39 1 
> > > >debug3: tty_make_modes: 40 0 
> > > >debug3: tty_make_modes: 41 1 
> > > >debug3: tty_make_modes: 50 1 
> > > >debug3: tty_make_modes: 51 1 
> > > >debug3: tty_make_modes: 52 0 
> > > >debug3: tty_make_modes: 53 1 
> > > >debug3: tty_make_modes: 54 1 
> > > >debug3: tty_make_modes: 55 1 
> > > >debug3: tty_make_modes: 56 0 
> > > >debug3: tty_make_modes: 57 0 
> > > >debug3: tty_make_modes: 58 0 
> > > >debug3: tty_make_modes: 59 1 
> > > >debug3: tty_make_modes: 60 1 
> > > >debug3: tty_make_modes: 61 1 
> > > >debug3: tty_make_modes: 62 0 
> > > >debug3: tty_make_modes: 70 1 
> > > >debug3: tty_make_modes: 71 0 
> > > >debug3: tty_make_modes: 72 1 
> > > >debug3: tty_make_modes: 73 0 
> > > >debug3: tty_make_modes: 74 0 
> > > >debug3: tty_make_modes: 75 0 
> > > >debug3: tty_make_modes: 90 1 
> > > >debug3: tty_make_modes: 91 1 
> > > >debug3: tty_make_modes: 92 0 
> > > >debug3: tty_make_modes: 93 0 
> > > >debug2: channel 0: request shell confirm 0 
> > > >debug2: fd 3 setting TCP_NODELAY 
> > > >debug2: callback done 
> > > >debug2: channel 0: open confirm rwindow 0 rmax 32768 
> > > >debug2: channel 0: rcvd adjust 131072 
> > > 
> > > Hangs here! 
> > > 
> > > _______________________________________________ 
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> > > Blueonyx at blueonyx.it 
> > > http://www.blueonyx.it/mailman/listinfo/blueonyx 
> > ------- End of Original Message ------- 
> > _______________________________________________
> > Blueonyx mailing list
> > Blueonyx at blueonyx.it
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