[one-users] Monitoring issue right after host creation [No Monitoring Information | OpenNebula 3.2.0]
biro lehel
lehel.biro at yahoo.com
Fri Mar 9 03:00:53 PST 2012
Hi Ruben,
I am using the OpenSUSE package (installed through
YaST). Just to make sure that I did the configurations right (I'm sure I
didn't):
At (I quote from the documentation): "To be able to use
the images copied by OpenNebula, change also the user and group under
which the libvirtd is run to “oneadmin”", what exactly needs to be done?
I am a Linux-noob (or at least, not at all an expert), so forget me
this question, but how do I set the user and group under which a daemon
is run? I have checked under which user is the libvirtd daemon is
currently running, and indeed it is root (since I probably set it and
put it in init.d as the root user).
Also: "(typically <oneadmin>) has to pertain to the <libvirtd> and <kvm> groups in order to use the daemon and be able to launch VMs."
What are the
<libvirtd> and <kvm> groups? And how how do I achieve the necessary configuration?
I did some configuration, but I just want to make sure that I'm not missing anything (which I probably do).
Ruben? Anyone?
Thank you,
Lehel.
--- On Fri, 3/9/12, Ruben S. Montero <rsmontero at opennebula.org> wrote:
From: Ruben S. Montero <rsmontero at opennebula.org>
Subject: Re: [one-users] Monitoring issue right after host creation [No Monitoring Information | OpenNebula 3.2.0]
To: "biro lehel" <lehel.biro at yahoo.com>
Cc: users at lists.opennebula.org
Date: Friday, March 9, 2012, 11:42 AM
Hi
It seems that a libvirt problem, either is not running at pcls or it is misconfigured. You have a couple of hints about configuring libvirt for KVM at [1].
My other concern is your permissions problem. Are you using the OpenSUSE package or installing from source?
[1] http://www.opennebula.org/documentation:rel3.2:kvmg#configuration
Thanks
Ruben
On Fri, Mar 9, 2012 at 7:58 AM, biro lehel <lehel.biro at yahoo.com> wrote:
Hello,
I checked your suggestions, and although the scripts existed inside kvm.d, I didn't have execution permissions on them. I also run 'onehost sync'.
However, now I get a monitoring error while running 'onehost show pcls', oned.log containing the following:
Fri Mar 9 08:45:45 2012 [InM][I]: Monitoring host pcls (6)
Fri Mar 9 08:45:50 2012 [InM][I]: Command execution fail: 'if [ -x "/var/tmp/one/im/run_probes" ]; then /var/tmp/one/im/run_probes kvm 6 pcls;
else exit 42; fi'
Fri Mar 9 08:45:50 2012 [InM][I]: WARNING: no socket to connect to
Fri Mar 9 08:45:50 2012
[InM][I]: error: authentication failed: authentication failed
Fri Mar 9 08:45:50 2012 [InM][I]: error: failed to connect to the hypervisor
Fri Mar 9 08:45:50 2012 [InM][E]: Error executing kvm.rb
Fri Mar 9 08:45:50 2012 [InM][I]: ExitCode: 255
Fri Mar 9 08:45:50 2012 [InM][E]: Error monitoring host 6 : MONITOR FAILURE 6 Error executing kvm.rb
On the other hand, running run_probes on pcls result in the same warning, but also outputs the expected data:
# /var/tmp/one/im/run_probes kvm 6 pcls
WARNING: no socket to connect to
ARCH=x86_64 MODELNAME="Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz" HYPERVISOR=kvm TOTALCPU=400 CPUSPEED=3301 TOTALMEMORY=16446744 USEDMEMORY=724860 FREEMEMORY=15721884 FREECPU=381.6 USEDCPU=18.4 NETRX=0 NETTX=0 HOSTNAME=pcls
I did check the documentation at [1], the only thing missing is that I didn't perform the following line:
/etc/default/libvirt-bin : add -l option to libvirtd_opts
, since I didn't have the mentioned file on my machine (I'm running OpenNebula 3.2.0 on an openSUSE 12.1 machine).
I was curious, and I run 'virsh -c qemu' command, resulting in the following:
# virsh -c qemu
WARNING: no socket to connect to
error: internal error unexpected Xen URI path 'qemu', try ///var/lib/xen/xend-socket
error: failed to connect to the hypervisor
Since I want to use KVM, and not Xen, as my hypervisor for OpenNebula, I smell a problem here. What am I missing? Any help?
[1]: http://opennebula.org/documentation:rel3.2:kvmg
--- On Thu, 3/8/12, Ruben S. Montero <rsmontero at opennebula.org> wrote:
From: Ruben S. Montero <rsmontero at opennebula.org>
Subject: Re: [one-users] Monitoring issue right after host creation [No Monitoring Information | OpenNebula 3.2.0]
To: "biro lehel" <lehel.biro at yahoo.com>
Cc:
users at lists.opennebula.org
Date: Thursday, March 8, 2012, 7:04 PM
Yes,
I mean the contents of the directory. run_probes, just executes the scripts in /var/tmp/one/im/kvm.d (in your case). The reason for no output of run_probes is an empty kvm.d. Could you check the contents of that directory (and execute any script there....)?
BTW run_probes is a very simple shell script (similar to run_parts) you may want to execute it with bash -xv /var/tmp/one/im/run_probes kvm 4 pcls
On Thu, Mar 8, 2012 at 5:57 PM, biro lehel <lehel.biro at yahoo.com> wrote:
Hello Ruben,
as I mentioned at the bottom of my previous email, I already run /var/tmp/one/im/run_probes with the necessary parameters on pcls (my only host), which resulted in the same (empty) output. The file exists, it just doesn't produce the expected (or any) output, and I couldn't find the reason so far.
I didn't try 'onehost sync', but I could try tomorrow morning (since I got home already, and I'm not at the respective computers), if you consider that it might help.
Any other suggestions?
Cheers,
Lehel.
--- On Thu, 3/8/12, Ruben S. Montero <rsmontero at opennebula.org> wrote:
From: Ruben S. Montero <rsmontero at opennebula.org>
Subject: Re: [one-users] Monitoring issue right after host
creation [No Monitoring Information | OpenNebula 3.2.0]
To: "biro lehel" <lehel.biro at yahoo.com>
Cc: users at lists.opennebula.org
Date: Thursday, March 8, 2012, 6:17 PM
Hi,
Could you please check the contents of /var/tmp/one/im/ at pcls? It seems that there are no probes there. If that's the case you can copy them by hand or use onehost sync and wait for a monitoring action on the host.
Cheers
Ruben
On Thu, Mar 8, 2012 at 4:25 PM, biro lehel <lehel.biro at yahoo.com> wrote:
Hello,
I tried to add my one and only host, by executing on the front-end:
> onehost create pcls im_kvm vmm_kvm tm_shared dummy
Issuing the 'onehost list' command, the result seems to be the one expected. However, issuing 'onehost show pcls' command results in zero values and NO monitoring information:
oneadmin at linux-4dsu:~/remotes/im> onehost show pcls
HOST 6
INFORMATION
ID : 6
NAME : pcls
STATE :
MONITORED
IM_MAD : im_kvm
VM_MAD : vmm_kvm
VN_MAD : dummy
TM_MAD : tm_shared
LAST MONITORING TIME : 1331219173
HOST
SHARES
MAX MEM : 0
USED MEM (REAL) : 0
USED MEM (ALLOCATED) : 0
MAX
CPU : 0
USED CPU (REAL) : 0
USED CPU (ALLOCATED) : 0
MAX DISK : 0
USED DISK (REAL) : 0
USED DISK (ALLOCATED) :
0
RUNNING VMS : 0
MONITORING INFORMATION
(the report ends here, without monitoring information).
I had some errors before, oned.log having:
Thu Mar 8 15:49:03 2012 [InM][I]: Command execution fail: 'if [ -x "/var/tmp/one/im/run_probes" ]; then /var/tmp/one/im/run_probes kvm 4 pcls; else exit 42; fi'
Thu Mar 8 15:49:03 2012 [InM][I]: ExitCode: 42
Thu Mar 8 15:49:03 2012 [InM][E]: Error monitoring host 4 : MONITOR FAILURE 4 -
However, I
fixed this by simply adding execution permission to the run_probes file mentioned above (since, it didn't have one). At this moment, oned.log contains no errors (to be precise, it says,
Thu Mar 8 17:16:12 2012 [ReM][D]: HostPoolInfo method invoked
Thu Mar 8 17:16:12 2012 [ReM][D]: VirtualMachinePoolInfo method invoked
Thu Mar 8 17:16:12 2012 [ReM][D]: AclInfo method invoked
Thu Mar 8 17:16:13 2012 [InM][I]: Monitoring host pcls (6)
Thu Mar 8 17:16:18 2012 [InM][I]: ExitCode: 0
Thu Mar 8 17:16:18 2012 [InM][D]: Host 6 successfully monitored.
Thu Mar 8 17:16:19 2012 [ReM][D]: UserPoolInfo method invoked
Thu Mar 8 17:16:19 2012 [AuM][D]: Message received: LOG I 874 ExitCode: 0
).
Firing the respective command on the host ( /var/tmp/one/im/run_probes kvm 4 pcls ) also results in no output and no errors (it simply puts a space on a new line in the CLI).
I don't
think that this is the expected behavior and I think that there is a problem somewhere. What am I missing? Any suggestions?
Thanks,
Lehel.
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--
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
--
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
--
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - The Open Source Solution for Data Center Virtualization
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
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