Hi,
BackupPC has been working on my system for quite a while, but now it
consequently fails after about 7 seconds. For this case, BackupPC server
and client refer to the same machine. Contents of /last bad XferLOG/:
Running: /usr/bin/ssh -q -x -n -l root virgo.ssc.kalliance.nl env
LC_ALL=C /usr/bin/gtar -c -v -f - -C / --totals ./home ./etc
./data/Afbeeldingen ./data/Documenten ./data/Muziek
full backup started for directory /
Xfer PIDs are now 22662,22661
Tar exited with error 65280 () status
tarExtract: Done: 0 errors, 0 filesExist, 0 sizeExist, 0
sizeExistComp, 0 filesTotal, 0 sizeTotal
Got fatal error during xfer (No files dumped for share /)
Backup aborted (No files dumped for share /)
Not saving this as a partial backup since it has fewer files than
the prior one (got 0 and 0 files versus 0)
You've probably seen this error before, usually pointing to a
misconfiguration of ssh somewhere. I read the manuals, did quite some
goole-ing but still I am stuck.
I'm pretty sure I set up ssh correctly, as this works lika a charm. I
started a shell for /backuppc/ and dit some checks:
-bash-4.2$ *id*
UID=992(backuppc) GID=989(backuppc) groepen=989(backuppc)
-bash-4.2$ *hostname*
virgo.ssc.kalliance.nl
-bash-4.2$ *ping**virgo.ssc.kalliance.nl -c 1*
PING virgo.ssc.kalliance.nl (192.168.204.140) 56(84) bytes of data.
64 bytes from virgo.ssc.kalliance.nl (192.168.204.140): icmp_seq=1
ttl=64 time=0.073 ms
--- virgo.ssc.kalliance.nl ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.073/0.073/0.073/0.000 ms
-bash-4.2$ *ssh -l root virgo.ssc.kalliance.nl whoami*
root
-bash-4.2$ *ssh -l root -o PreferredAuthentications="publickey"
virgo.ssc.kalliance.nl whoami*
root
For troubleshooting purposes, removed the -q option for the tar
xfer-method in config.pl:
$Conf{TarClientCmd} = '$sshPath -x -n -l root $host'
Requesting a full backup in the web interface gave me almost the same
message: *
**
*Running: /usr/bin/ssh -x -n -l root virgo.ssc.kalliance.nl env LC_ALL=C
/usr/bin/gtar -c -v -f - -C / --totals ./home ./etc ./data/Afbeeldingen
./data/Documenten ./data/Muziek
full backup started for directory /
Xfer PIDs are now 22695,22694
* ssh_exchange_identification: Connection closed by remote host**
* Tar exited with error 65280 () status
tarExtract: Done: 0 errors, 0 filesExist, 0 sizeExist, 0
sizeExistComp, 0 filesTotal, 0 sizeTotal
Got fatal error during xfer (No files dumped for share /)
Backup aborted (No files dumped for share /)
Not saving this as a partial backup since it has fewer files than
the prior one (got 0 and 0 files versus 0)
Please note the *ssh_exchange_identification: Connection closed by
remote host**
*
That's funny....
I started pointing my attention to sshd: I started another shell for
/root/, stopped the sshd background service, and started sshd in foreground:
[root@virgo ~]# *service sshd stop*
Redirecting to /bin/systemctl stop sshd.service
[root@virgo ~]#*/usr/sbin/sshd -d*
debug1: sshd version OpenSSH_6.2, OpenSSL 1.0.1e-fips 11 Feb 2013
debug1: read PEM private key done: type RSA
debug1: private host key: #0 type 1 RSA
debug1: read PEM private key done: type DSA
debug1: private host key: #1 type 2 DSA
debug1: read PEM private key done: type ECDSA
debug1: private host key: #2 type 3 ECDSA
debug1: rexec_argv[0]='/usr/sbin/sshd'
debug1: rexec_argv[1]='-d'
Set /proc/self/oom_score_adj from 0 to -1000
debug1: Bind to port 22 on 0.0.0.0.
Server listening on 0.0.0.0 port 22.
debug1: Bind to port 22 on ::.
Server listening on :: port 22.
Again, I requested a full backup from the web-interface: *no updates *in
the /root/ shell with sshd running in foreground. Huh?
To be sure, I re-did a *ssh -l root -o
PreferredAuthentications="publickey" virgo.ssc.kalliance.nl whoami* from
the /backuppc/ shell, which still works like a charm (again), and
updates in the /root/ shell with sshd running in foreground.
Looks like an address resolution issue, but I really don't know where to
go from here. Please be informed that I also run IPA on this machine....
I appreciate any reply...
Regards
Martin
***
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