OpenNebula

Hi,

I've followed configuration directions here: http://opennebula.org/documentation:rel3.0:ganglia

IM seems is working correctly, onehost list output:

  ID NAME               RVM   TCPU   FCPU   ACPU   TMEM   FMEM   AMEM   STAT
   2 thor                 4    400    382    360   2.9G   2.5G   2.7G     on
   3 odin                 6    400    362    340   3.9G   2.9G   3.5G     on

Hosts are configured with:

IM_MAD                : im_ganglia          
VM_MAD                : vmm_kvm             
TM_MAD                : tm_shared  

I've enabled the poll_ganglia local poll adding -l poll=poll_ganglia to vmm_kvm arguments.

I've configured the cron to push the VMS_INFORMATION base64 array to Ganglia, it's appearing both in the host details in the ganglia web interface, and in the output of onehost show for both nodes:

$ onehost show 3|grep VMS_INFORMATION|awk -F'"' '{print$2}'|base64 -d
--- 
one-35: 
  :state: a
  :nettx: 0
  :usedcpu: "2.5" 
  :name: one-35
  :usedmemory: 65536
  :netrx: 185856
one-37: 
  :state: a
  :nettx: 0
  :usedcpu: "2.5" 
  :name: one-37
  :usedmemory: 65536
  :netrx: 183694
$ onehost show 2|grep VMS_INFORMATION|awk -F'"' '{print$2}'|base64 -d
--- 
one-36: 
  :state: a
  :nettx: 0
  :usedcpu: "2.8" 
  :name: one-36
  :usedmemory: 65536
  :netrx: 172851

However, something is broken:

$ onevm list
    ID USER     GROUP    NAME         STAT CPU     MEM        HOSTNAME        TIME
    28 oneadmin oneadmin tty_0        runn   0      0K            odin 04 21:26:28
    29 oneadmin oneadmin tty_1        runn   0      0K            thor 04 21:26:28
    30 oneadmin oneadmin tty_2        runn   0      0K            odin 04 21:26:28
    31 oneadmin oneadmin tty_3        runn   0      0K            thor 04 21:26:28
    32 oneadmin oneadmin tty_4        runn   0      0K            odin 04 21:26:27
    33 oneadmin oneadmin tty_5        runn   0      0K            thor 04 21:26:27
    34 oneadmin oneadmin tty_6        runn   0      0K            odin 04 21:26:27
    35 oneadmin oneadmin tty_7        runn   0      0K            odin 04 21:26:27
    36 oneadmin oneadmin tty_8        runn   0      0K            thor 04 21:26:27
    37 oneadmin oneadmin tty_9        runn   0      0K            odin 04 21:26:26

Poll are constantly failing.

[VMM][D]: Message received: LOG I 37 Command execution fail: /var/cloud/one/var/remotes/vmm/kvm/poll_ganglia one-37 odin 37 odin
[VMM][D]: Message received: LOG I 37 /var/cloud/one/var/remotes/vmm/kvm/poll_ganglia:73: undefined method `[]' for nil:NilClass (NoMethodError)
[VMM][D]: Message received: LOG I 37 ExitCode: 1
[VMM][D]: Message received: POLL FAILURE 37 -

Looking in the code, seems that the early call:

doms_info=ganglia.get_vms_information

is returning null, but I'm not so smart to go deeper than this.

This is a test environment based on Debian Squeeze amd64, I can provide external SSH access if could help debugging the issue.