rsync - May 2004 - rsync error: error in rsync protocol data stream (code 12) at io.c(189)

Rsync Issue Solaris8


When performing a simple rsync between servers I was getting the
following error:

root:#> rsync -e ssh -va /export/home/a078479/bob
smmk39:/export/home/a078479/
ksh: rsync:  not found
rsync: connection unexpectedly closed (0 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(189)
root:#>



I was thorghrough in setting up rsync to be used between servers and was
still getting errors , I did the following to Setup Rsync.


Added each host into the /etc/hosts file.



Added each users ssh keys from each node to their ./.ssh/authorized_keys
so I dont have to use password files or anything of the sort.



Added rsync Port Alias to /etc/services:

echo "rsync 873/tcp" >> /etc/services



Added rsync Daemon to /etc/inetd.conf:

echo "rsync stream tcp nowait root /usr/bin/rsync rsyncd --daemon"
>>
/etc/inetd.conf



Recycle (HUP) inetd daemon:

for i in `ps -ef |grep inetd | grep -v grep | awk '{print $2}'
do
kill -HUP $i
done



And still got the error as indicated below.



So I tried to do some debugging with the syntax below.


root:#> rsync -e 'ssh -vv -x' -ra /export/home/a078479/bob
smmk39:/export/home/a078479/
OpenSSH_3.4p1, SSH protocols 1.5/2.0, OpenSSL 0x0090602f
debug1: Reading configuration data /fisc/openssh/etc/ssh_config
debug1: Applying options for *
debug1: Rhosts Authentication disabled, originating port will not be
trusted.
debug1: ssh_connect: needpriv 0
debug1: Connecting to smmk39 [172.25.108.30] port 22.
debug1: Connection established.
debug1: identity file /export/home/a078479/.ssh/identity type 0
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug2: key_type_from_name: unknown key type '-----END'
debug1: identity file /export/home/a078479/.ssh/id_rsa type 1
debug1: identity file /export/home/a078479/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version
OpenSSH_3.4p1
debug1: match: OpenSSH_3.4p1 pat OpenSSH*
debug1: Local version string SSH-1.5-OpenSSH_3.4p1
debug1: Waiting for server public key.
debug1: Received server public key (1152 bits) and host key (1024 bits).
debug1: Host 'smmk39' is known and matches the RSA1 host key.
debug1: Found key in /export/home/a078479/.ssh/known_hosts:1
debug1: Encryption type: 3des
debug1: Sent encrypted session key.
debug1: cipher_init: set keylen (16 -> 32)
debug1: cipher_init: set keylen (16 -> 32)
debug1: Installing crc compensation attack detector.
debug1: Received encrypted confirmation.
debug1: Trying RSA authentication with key
'/export/home/a078479/.ssh/identity'
debug1: Received RSA challenge from server.
debug1: Sending response to host key RSA challenge.
debug1: Remote: RSA authentication accepted.
debug1: RSA authentication accepted by server.
debug1: Sending command: rsync --server -logDtpr . /export/home/a078479/
debug1: Entering interactive session.
debug1: fd 0 setting O_NONBLOCK
debug2: fd 1 is O_NONBLOCK
ksh: rsync:  not found
debug2: fd 0 is not O_NONBLOCK
debug1: fd 1 clearing O_NONBLOCK
debug1: Transferred: stdin 4, stdout 0, stderr 23 bytes in 0.1 seconds
debug1: Bytes per second: stdin 34.4, stdout 0.0, stderr 197.7
debug1: Exit status 127
rsync: connection unexpectedly closed (0 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(189)



Here I found out that after secure shelling over to the remote system
the rsync command was not being found!!



As the user I did a which and found out that rsync was in the
/usr/local/bin/rsync so I decided to link rsync to a system binary
directory.

sdal19:/# ln -s /usr/local/bin/rsync /usr/bin/rsync
sdal19:/# which rsync
/usr/bin/rsync



root:#> rsync -e ssh -va /export/home/a078479/bob
smmk39:/export/home/a078479/
building file list ... done
bob/
bob/test

wrote 129 bytes  read 40 bytes  112.67 bytes/sec
total size is 0  speedup is 0.00



Success!!

Looks like the system or user profile was not setting set when ssh logs
in and this simple change will fix it in my case.

Bobby Gunn

Standard newbie issue.
rsh host command (or ssh host command in your case) does so in a fairly 
stripped environment, for instance, a small $PATH, which is your issue 
(unless rsync isn't even installed on smmk39).  rsync has aneasy 
workaround for it.  add " --rsync-path=/path/on/the/remote/host/to/rsync
"
commonly " --rsync-path=/usr/local/bin/rsync ".  You can also link it
into
someplace in your path, if you're the admin, and are going to be having a 
lot of users doing their own rsync commandlines.
The stuff you're doing with services and inetd.conf are irrelevant, unless 
you're going to run an inetd-managed rsyncd, which is NOT what you are 
doing or accessing in the commandline given.
Also your inet hupping is a bit scary.  If you have anything that has the 
word "inetd" in the ps line, it's going to get a HUP, and many
things
react to a HUP like to a TERM.  I'd suggest a pattern like " 
/usr/sbin/in[eE]td -s$", as you're on Solaris 8.

To call that rsync server, forget the "-e ssh".
have this in your /etc/rsyncd.conf:
++++++++++++++++++++++++++++++++++
[home]
path = /home
++++++++++++++++++++++++++++++++++
Or tighter yet:
++++++++++++++++++++++++++++++++++
[homeforbob]
path = /home/a078479/bob
++++++++++++++++++++++++++++++++++
rsync -va /export/home/a078479/bob smmk39::homeforbob

I see, having read to the bottom of your message, that you did the linking 
thing. That's cool, and well-documented.  Glad you figured it out.  It's
not an rsync issue, but an environmental one.


Tim Conway
Unix System Administration
Contractor - IBM Global Services
desk:3032734776
conway@us.ibm.com


Rsync Issue Solaris8


When performing a simple rsync between servers I was getting the
following error:

root:#> rsync -e ssh -va /export/home/a078479/bob
smmk39:/export/home/a078479/
ksh: rsync:  not found
rsync: connection unexpectedly closed (0 bytes read so far)
rsync error: error in rsync protocol data stream (code 12) at io.c(189)
root:#>