[Bug 382518] [NEW] SSH file known_hosts gets modified causing keys to dissappear and all ONE actions to fail

Phoenixz sven at kionetworks.com
Mon Jun 1 19:01:06 UTC 2009


Public bug reported:

Binary package hint: opennebula

This bug MIGHT be a result of the solution of bug 331838

Basically, I manually add the SSH keys for user oneadmin to the nodes. I
sudo -u oneadmin ssh <host> as specified in the output from onehost add.
I said "yes" to the key verification question, which adds the hosts to
"known_host" file. Then, when starting to work with opennebula,  all
seems to be fine, until I add a physical host. suddenly the status in
"onehost list" goes to "err". When checking logs, I see that ssh access
failed. Again I try sudo -u oneadmin ssh <host> and to my surprise AGAIN
I get the host key verification question where I have to type "yes"..
When I repeat this, I get to the same point where again I have to say
yes..

When checking the known hosts file, I find that the known_hosts entry I
added is gone. I tried everything to avoid this (even up to making the
oneadmin known_hosts file root:root 444 mode) but all failed.. after a
few seconds, the file was back to its original again.

I traced it back to a file called /var/lib/one/savekeys.sh and
/etc/cron.hourly/opennebula. They seem to (re)create the known_hosts
file. I think this has somehting to do with the automated key
distribution of bug #331838 but Im not sure.

I went over this problem with jfontan, developer of open nebula, and he
informed me that these files are ubuntu related, not opennebula.

sven at fS-Ex:~$ lsb_release -rd
Description:    Ubuntu 9.04
Release:        9.04

sven at fS-Ex:~$ apt-cache policy opennebula
opennebula:
  Installed: 1.2-0ubuntu5
  Candidate: 1.2-0ubuntu5
  Version table:
 *** 1.2-0ubuntu5 0
        500 http://us.archive.ubuntu.com jaunty/universe Packages
        100 /var/lib/dpkg/status

** Affects: opennebula (Ubuntu)
     Importance: Undecided
         Status: New

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SSH file known_hosts gets modified causing keys to dissappear and all ONE actions to fail
https://bugs.launchpad.net/bugs/382518
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