[one-users] Error monitoring host

[Humberto N. Castejon Martinez]

Thanks for your help. As I said in my original email, I thought it was a
funny problem, since everything used to work before and suddenly stopped
working, w/o me doing anything. Well, as usual, funny problems are normally
the result of stupid mistakes. I actually did something that prevented the
monitoring to work as it should. I re-started Opennebula, but I did it as
root. Now i have re-strated it once more, this time as oneadmin, and
everything works as it used to. Thanks again for the help and sorry for
bothering you with stupid problems.

Cheers,
Humberto


Date: Wed, 21 Sep 2011 22:19:32 +0400
From: knawnd at gmail.com
To: users at lists.opennebula.org
Subject: Re: [one-users] Error monitoring host
Message-ID: <4E7A2AB4.3070108 at gmail.com>
Content-Type: text/plain; charset=UTF-8; format=flowed

Hi Humberto,

Just a guess.

What the output of the command 'grep nodeinfo_text
$ONE_LOCATION/lib/remotes/im/kvm.d/kvm.rb|grep virsh' on front-end node?
I have
nodeinfo_text = `virsh -c qemu:///system nodeinfo`

But it looks like you should change it to
virsh -c qemu+ssh:///system

HTH,
Nikolay.

Humberto N. Castejon Martinez wrote on 21/09/11 19:21:
> Hi,
>
> I know the problem I am going to report has already been discussed, but
> what I have read from previous discussions has not helped.
> My Opennebula front-end has problems to monitor one of my hosts. I get
> the following log messages:
>
> Wed Sep 21 17:03:44 2011 [InM][I]: Command execution fail: 'if [ -x
> "/var/tmp/one/im/run_probes" ]; then /var/tmp/one/im/run_probes kvm
> joker; else $
> Wed Sep 21 17:03:44 2011 [InM][I]: STDERR follows.
> Wed Sep 21 17:03:44 2011 [InM][I]: Permission denied, please try again.
> Wed Sep 21 17:03:44 2011 [InM][I]: Permission denied, please try again.
> Wed Sep 21 17:03:44 2011 [InM][I]: Permission denied (publickey,password).
> Wed Sep 21 17:03:44 2011 [InM][I]: ExitCode: 255
> Wed Sep 21 17:03:44 2011 [InM][E]: Error monitoring host 0 : MONITOR
> FAILURE 0 Could not monitor host joker.
>
> The first thing that I have noticed is that run_probes is not in
> /var/tmp/one/im/, but I have it in /srv/cloud/one/lib/remotes/im/. Can
> that be the source of the problem?
> If I executed from my front end machine the following command as root,
> everything seems to work ok:
>
>   /srv/cloud/one/lib/remotes/im/run_probes kvm joker
>
> However, if i execute it as oneadmin, i get the following error:
>
> Connecting to uri: qemu:///system
> error: unable to connect to '/var/run/libvirt/libvirt-sock': Permission
> denied
> error: failed to connect to the hypervisor
> Error executing kvm.rb
> ARCH=x86_64 MODELNAME="Intel(R) Xeon(R) CPU E5540 @ 2.53GHz"
>
> I have checked, and oneadmin is member of the cloud group in joker, I
> have specified unix_sock_group = "cloud" in /etc/libvirt/libvirtd.conf
> and   libvirt-sock  seems to have the right permissions: srwxrwx--- 1
> root cloud 0 2011-09-21 17:02 /var/run/libvirt/libvirt-sock
> So i do not know why I get the "permission denied" message.
> However, if I run virsh -c qemu+ssh://oneadmin@joker/system, I manage to
> connect to virsh, w/o entering a password.
>
> So i do not really know what the problem is, and hope you can help me.
> The funny thing is that it used to work perfectly, but it stopped
> working suddenly, without me changing anything (or at least I think so).
>
> Cheers,
> Humberto
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org


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