i have installed openstack juno ubuntu 14.04 on all nodes. when i click at "Resource Usage" to generate report on dash board, i dont get the memory.usage metric. i have searched and tried alot but couldnt reach the results.

here is what i have done :

on compute node :

os@compute:~$ virsh version

Compiled against library: libvirt 1.2.2
Using library: libvirt 1.2.2
Using API: QEMU 1.2.2
Running hypervisor: QEMU 2.0.0

os@compute:~$ virsh list --all

 Id    Name                           State
----------------------------------------------------
 3     instance-0000001b              running

os@compute:~$ virsh dominfo 3

Id:             3
Name:           instance-0000001b
UUID:           e00dd2b4-e8ba-4bf6-a93b-81fdbf9aee3c
OS Type:        hvm
State:          running
CPU(s):         1
CPU time:       8.7s
Max memory:     260096 KiB
Used memory:    260096 KiB
Persistent:     yes
Autostart:      disable
Managed save:   no
Security model: apparmor
Security DOI:   0
Security label: libvirt-e00dd2b4-e8ba-4bf6-a93b-81fdbf9aee3c (enforcing)

os@compute:~$ virsh dumpxml 3

<domain type='qemu' id='3'>
  <name>instance-0000001b</name>
  <uuid>e00dd2b4-e8ba-4bf6-a93b-81fdbf9aee3c</uuid>
  <metadata>
    <nova:instance xmlns:nova="http://openstack.org/xmlns/libvirt/nova/1.0">
      <nova:package version="2014.2.1"/>
      <nova:name>test</nova:name>
      <nova:creationTime>2015-03-12 19:26:15</nova:creationTime>
      <nova:flavor name="salar">
        <nova:memory>254</nova:memory>
        <nova:disk>10</nova:disk>
        <nova:swap>254</nova:swap>
        <nova:ephemeral>1</nova:ephemeral>
        <nova:vcpus>1</nova:vcpus>
      </nova:flavor>
      <nova:owner>
        <nova:user uuid="e8bd7a73445d4a0c80119f0c84fda6ef">admin</nova:user>
        <nova:project uuid="eb81354a74324334b106c200edab9f15">admin</nova:project>
      </nova:owner>
      <nova:root type="image" uuid="eaadbcd8-c19c-41ea-b51f-b45fff201724"/>
    </nova:instance>
  </metadata>
  <memory unit='KiB'>260096</memory>
  <currentMemory unit='KiB'>260096</currentMemory>
  <vcpu placement='static' cpuset='0-2'>1</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <sysinfo type='smbios'>
    <system>
      <entry name='manufacturer'>OpenStack Foundation</entry>
      <entry name='product'>OpenStack Nova</entry>
      <entry name='version'>2014.2.1</entry>
      <entry name='serial'>4c981778-18b2-4700-a63d-684454f933be</entry>
      <entry name='uuid'>e00dd2b4-e8ba-4bf6-a93b-81fdbf9aee3c</entry>
    </system>
  </sysinfo>
  <os>
    <type arch='x86_64' machine='pc-i440fx-trusty'>hvm</type>
    <boot dev='hd'/>
    <smbios mode='sysinfo'/>
  </os>
  <features>
    <acpi/>
    <apic/>
  </features>
  <cpu mode='host-model'>
    <model fallback='allow'/>
    <topology sockets='1' cores='1' threads='1'/>
  </cpu>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/var/lib/nova/instances/e00dd2b4-e8ba-4bf6-a93b-81fdbf9aee3c/disk'/>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </disk>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/var/lib/nova/instances/e00dd2b4-e8ba-4bf6-a93b-81fdbf9aee3c/disk.local'/>
      <target dev='vdb' bus='virtio'/>
      <alias name='virtio-disk1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </disk>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/var/lib/nova/instances/e00dd2b4-e8ba-4bf6-a93b-81fdbf9aee3c/disk.swap'/>
      <target dev='vdc' bus='virtio'/>
      <alias name='virtio-disk2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </disk>
    <controller type='usb' index='0'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model ...