Attepmt to use amrecover over ssh from client returns Host key verification failed

[jscarville]

Amanda has been happily backing up a half dozen Linux machines for a week now and I can even restore files using amrecover on the server. That part was easy.

Using the instructions I found on teh wiki -- with appropriate adjustments for my environment -- I tried to get amrecover over ssh working on the clients with no success.

I created a key pair on the client.

I added the public key of the above pair to /var/amanda/.ssh/authorized_keys on the server

As a test, I can log onto the server from the client as amandabackup:

$ ssh -i /var/amanda/.ssh/amrecover_key scadev02.lereta.com

and as root:

$ sudo ssh -i /var/amanda/.ssh/amrecover_key [email]amandabackup@scadev02.lereta.com[/email]

but running amrecover as root I get a "Host key verification failed":

$ sudo amrecover
Host key verification failed.
AMRECOVER Version 2.6.1p2. Contacting server on scadev02.lereta.com ...
[request failed: EOF on read from scadev02.lereta.net]

Just to be certain this is not just an incompatibility between 2.6.1 (on client) and 3.3.6 (on the server), I tried the same steps on a machine running client version 3.3.6 with the same results.

$ sudo amrecover
Host key verification failed.
AMRECOVER Version 3.3.6. Contacting server on scadev02.lereta.com ...
[request failed: EOF on read from scadev02.lereta.net]

Server version: 3.3.6

Client version: 2.6.1p2

/etc/amanda/amanda-client.conf

conf "lereta"
index_server "scadev02.lereta.com"
tape_server "scadev02.lereta.com"
tapedev ""
auth "ssh"
ssh_keys "/var/amanda/.ssh/amrecover_key"
client_username "amandabackup"

(I also noticed that the underscore was replaced by a dash between 2.6.1 and 3.3.6)

/var/log/amanda/client/amrecover.20150116145809.debug contains:

1421449089.660567: amrecover: pid 7195 ruid 0 euid 0 version 2.6.1p2: start at Fri Jan 16 14:58:09 2015
1421449089.661031: amrecover: pid 7195 ruid 0 euid 0 version 2.6.1p2: rename at Fri Jan 16 14:58:09 2015
1421449089.661075: amrecover: security_getdriver(name=ssh) returns 0x7ff5c720f2e0
1421449089.661094: amrecover: security_handleinit(handle=0x7ff5c9929a30, driver=0x7ff5c720f2e0 (SSH))
1421449089.661685: amrecover: security_streaminit(stream=0x7ff5c99315a0, driver=0x7ff5c720f2e0 (SSH))
1421449089.719622: amrecover: security_stream_seterr(0x7ff5c99315a0, SOCKET_EOF)
1421449089.719657: amrecover: security_seterror(handle=0x7ff5c9929a30, driver=0x7ff5c720f2e0 (SSH) error=EOF on read from scadev02.lereta.net)
1421449089.719671: amrecover: security_close(handle=0x7ff5c9929a30, driver=0x7ff5c720f2e0 (SSH))
1421449089.719677: amrecover: security_stream_close(0x7ff5c99315a0)

I do not see what I am overlooking. I can connect as amandabackup but, assuming that amrecover connects as the user in client-username, amrecover cannot.

Any suggestions as to where to go from here?

[Segaboy]

Why did you set up using chg-multi? I would expect that since you have a tape library you would want to set it up with mtx and then use chg-zd-mtx. If you can control & query the library with mtx and the drive with mt, then you can set up Amanda to manage the library.


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