[one-users] onehost problem with kvm

[Csom Gyula]

Hi,

We met a similar problem and it turned out that the IM MAD responsible for KVM-specific
monitoring is kvm.rb<http://dev.opennebula.org/projects/opennebula/repository/revisions/master/entry/src/im_mad/kvm/kvm.rb>. Unfotunately the script found in the ONE v.1.4 download was not in
synch with the codebase, namely the virsh call at the begining was erroneous...

You may check whether kvm.rb of your installation contains the following line at the
begining:

  nodeinfo_text = `virsh -c qemu:///system nodeinfo`

if not then you may simple correct it...

Note that: kvm.rb is found in the ONE lib directory within the im_probes subdir.


You may also check whether NIC names used in the hosts are in synch with the kvm.rb
setting, otherwise NETRX, NETTX might not receive monitoring values at all. kvm.rb looks
for network monitoring values through the eth1 interface by default. If this is not your case
you might change the setting, eg.:

  NETINTERFACE = "real nic name"

Cheers,
Gyula

________________________________
Feladó: users-bounces at lists.opennebula.org [users-bounces at lists.opennebula.org] ; meghatalmazó: Andrea Turli [andrea.turli at eng.it]
Küldve: 2010. június 23. 17:04
Címzett: users at lists.opennebula.org
Tárgy: [one-users] onehost problem with kvm

Dear all,

I'm starting today a new installation of OpenNebula 1.4 with the really useful OpenNebula Express guide at http://dev.opennebula.org/projects/opennebula-express/wiki
Unfortunately it seems to be a communication problem between my front-end (Ubuntu 10.04 - KVM - NFS) and my node (Ubuntu 10.04 - KVM - NFS)

Here some outputs from the frot-end:

$ onehost list
  ID NAME                      RVM   TCPU   FCPU   ACPU    TMEM    FMEM STAT
   2 grids21.eng.it              0      0      0    100       0 7891240   on


oneadmin at lisa:~$ onehost show 2
HOST 2 INFORMATION
ID                    : 2
NAME                  : grids21.eng.it
STATE                 : MONITORED
IM_MAD                : im_kvm
VM_MAD                : vmm_kvm
TM_MAD                : tm_nfs

HOST SHARES
MAX MEM               : 0
USED MEM (REAL)       : 547284
USED MEM (ALLOCATED)  : 0
MAX CPU               : 0
USED CPU (REAL)       : 0
USED CPU (ALLOCATED)  : 0
RUNNING VMS           : 0

MONITORING INFORMATION
ARCH=x86_64
CPUSPEED=
FREECPU=0.0
FREEMEMORY=7891364
HOSTNAME=bart
HYPERVISOR=kvm
MODELNAME=Intel(R) Xeon(R) CPU            5130  @ 2.00GHz
NETRX=0
NETTX=0
TOTALCPU=
TOTALMEMORY=
USEDCPU=0.0
USEDMEMORY=547284

Here also my oned.conf:

Wed Jun 23 16:54:52 2010 [InM][I]: --Mark--
Wed Jun 23 16:54:52 2010 [InM][D]: Host 2 successfully monitored.
Wed Jun 23 16:55:30 2010 [ReM][D]: HostInfo method invoked
Wed Jun 23 16:55:36 2010 [ReM][D]: HostPoolInfo method invoked
Wed Jun 23 16:55:52 2010 [InM][I]: Monitoring host grids21.eng.it (2)
Wed Jun 23 16:56:17 2010 [InM][D]: Host 2 successfully monitored.
Wed Jun 23 16:56:28 2010 [ReM][D]: HostInfo method invoked
Wed Jun 23 16:57:22 2010 [InM][I]: Monitoring host grids21.eng.it (2)
Wed Jun 23 16:57:47 2010 [InM][D]: Host 2 successfully monitored.
Wed Jun 23 16:58:52 2010 [InM][I]: Monitoring host grids21.eng.it (2)
Wed Jun 23 16:59:17 2010 [InM][D]: Host 2 successfully monitored.
Wed Jun 23 17:00:22 2010 [InM][I]: Monitoring host grids21.eng.it (2)
Wed Jun 23 17:00:47 2010 [InM][D]: Host 2 successfully monitored.
Wed Jun 23 17:01:52 2010 [InM][I]: Monitoring host grids21.eng.it (2)


I think there is a problem in retrieving the CPUSPEED, TOTALCPU and TOTALMEMORY and for this reason I cannot run any VM.
It seems really similar to this post http://lists.opennebula.org/pipermail/users-opennebula.org/2010-February/001453.html but I cannot find there a solution.

Thank you in advance for your help and suggestions,
Andrea




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