[libvirt-users] lxc--sshd

[Brandon Foster]

On Mon, Mar 4, 2013 at 11:59 AM, Brandon Foster
<brandon.foster at liferay.com> wrote:
> More information.
>
> So to recap, i've set up a LXC guest. it has an ip, it can ping out,
> other computers on the network can ping it, I can ssh to the host
> machine, and I can ssh from the lxc guest (after consoling in). But i
> cannot ssh to the lxc guest from the network, from the host, or from
> the lxc guest itself.
>
> to limit the number of problems ive decided to try and ssh to local
> host while consoled to the lxc guest.
> here are the results:
>
> ----------------------------------------------------
> root at virt-host-1:/> ssh -vvv localhost
> OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010
> debug1: Reading configuration data /etc/ssh/ssh_config
> debug1: Applying options for *
> debug2: ssh_connect: needpriv 0
> debug1: Connecting to localhost [::1] port 22.
> 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_5.3
> debug1: match: OpenSSH_5.3 pat OpenSSH*
> debug1: Enabling compatibility mode for protocol 2.0
> debug1: Local version string SSH-2.0-OpenSSH_5.3
> debug2: fd 3 setting O_NONBLOCK
> debug1: SSH2_MSG_KEXINIT sent
> debug3: Wrote 792 bytes for a total of 813
> debug1: SSH2_MSG_KEXINIT received
> debug2: kex_parse_kexinit:
> diffie-hellman-group-exchange-sha256,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-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc at lysator.liu.se
> debug2: kex_parse_kexinit:
> aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc at lysator.liu.se
> debug2: kex_parse_kexinit:
> hmac-md5,hmac-sha1,umac-64 at openssh.com,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
> debug2: kex_parse_kexinit:
> hmac-md5,hmac-sha1,umac-64 at openssh.com,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
> debug2: kex_parse_kexinit: none,zlib at openssh.com,zlib
> debug2: kex_parse_kexinit: none,zlib at openssh.com,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-sha256,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-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc at lysator.liu.se
> debug2: kex_parse_kexinit:
> aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc at lysator.liu.se
> debug2: kex_parse_kexinit:
> hmac-md5,hmac-sha1,umac-64 at openssh.com,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
> debug2: kex_parse_kexinit:
> hmac-md5,hmac-sha1,umac-64 at openssh.com,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
> debug2: kex_parse_kexinit: none,zlib at openssh.com
> debug2: kex_parse_kexinit: none,zlib at openssh.com
> debug2: kex_parse_kexinit:
> debug2: kex_parse_kexinit:
> debug2: kex_parse_kexinit: first_kex_follows 0
> debug2: kex_parse_kexinit: reserved 0
> debug2: mac_setup: found hmac-md5
> debug1: kex: server->client aes128-ctr hmac-md5 none
> debug2: mac_setup: found hmac-md5
> debug1: kex: client->server aes128-ctr hmac-md5 none
> debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
> debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
> debug3: Wrote 24 bytes for a total of 837
> debug2: dh_gen_key: priv key bits set: 144/256
> debug2: bits set: 508/1024
> debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
> debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
> debug3: Wrote 144 bytes for a total of 981
> debug3: check_host_in_hostfile: filename /root/.ssh/known_hosts
> debug3: check_host_in_hostfile: match line 2
> debug1: Host 'localhost' is known and matches the RSA host key.
> debug1: Found key in /root/.ssh/known_hosts:2
> debug2: bits set: 528/1024
> 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
> debug3: Wrote 16 bytes for a total of 997
> debug2: set_newkeys: mode 0
> debug1: SSH2_MSG_NEWKEYS received
> debug1: SSH2_MSG_SERVICE_REQUEST sent
> debug3: Wrote 48 bytes for a total of 1045
> 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))
> debug3: Wrote 64 bytes for a total of 1109
> debug1: Authentications that can continue: publickey,password
> debug3: start over, passed a different list publickey,password
> debug3: preferred
> gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
> 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
> root at localhost's password:
> debug3: packet_send2: adding 64 (len 59 padlen 5 extra_pad 64)
> debug2: we sent a password packet, wait for reply
> debug3: Wrote 144 bytes for a total of 1253
> debug1: Authentication succeeded (password).
> debug1: channel 0: new [client-session]
> debug3: ssh_session2_open: channel_new: 0
> debug2: channel 0: send open
> debug1: Requesting no-more-sessions at openssh.com
> debug1: Entering interactive session.
> debug3: Wrote 128 bytes for a total of 1381
> debug3: Wrote -1 bytes for a total of 1381
> Write failed: Broken pipe
>
>
> -------------------------------------------
>
>
> it accepts my log in, but fails after that.
>
> any clues?



So i've tried many fixes that I have found in association with the
broken pipe error. changing limits.conf, and keep serveralive,
clientalive. all of that didnt affect it. The home directory is set
for the user im trying to ssh into.

no related activity in /var/log/messages or secure.

I've tried this on multiple hosts. i can ssh to the host just fine,
and console into the container.

still stuck. any suggestions appreciated.