Saturday, November 5, 2016

Verification switching to routable ctlplane 192.168.24.0/24 on TripleO Quickstart

Create new VM centos72vm  on VIRTHOST with one VNIC . Set up  VNIC via attaching to "overcloud" libvirt sub-net (bridge brovc). No attaching to external 192.168.23.0/24 (br-ext ) sub-net is supposed to be made as was required with non-rout-able 192.0.2.0/24. Originally "centos72vm" will be created with static IP. Afterwards neutron port with MAC address obtained by newly created guest will be created on "ctlplane". What will allow to switch VNIC on "centos72vm" to DHCP mode via straight forward invocation of NetworkManager GUI. Fist changing mode from "static" to "dhcp" and applying changes, followed by bouncing updated virtual interface (VNIC).


VNIC originally  set to static IP 192.168.24.54 on "ctlplane"

[root@Server72CentOS ~]#  virsh dumpxml centos72vm
<domain type='kvm' id='4'>
  <name>centos72vm</name>
  <uuid>359641c8-0d4a-4684-ad38-4184def33405</uuid>
  <memory unit='KiB'>1048576</memory>
  <currentMemory unit='KiB'>1048576</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.0.0'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
  </features>
  <cpu mode='custom' match='exact'>
    <model fallback='allow'>Haswell-noTSX</model>
  </cpu>
  <clock offset='utc'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <pm>
    <suspend-to-mem enabled='no'/>
    <suspend-to-disk enabled='no'/>
  </pm>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/var/lib/libvirt/images/centos72vm.qcow2'/>
      <backingStore/>
      <target dev='vda' bus='virtio'/>
      <alias name='virtio-disk0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </disk>
    <disk type='block' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <backingStore/>
      <target dev='hda' bus='ide'/>
      <readonly/>
      <alias name='ide0-0-0'/>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <alias name='usb'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <alias name='usb'/>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <alias name='usb'/>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <alias name='usb'/>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'>
      <alias name='pci.0'/>
    </controller>
    <controller type='ide' index='0'>
      <alias name='ide'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <alias name='virtio-serial0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </controller>
    <interface type='network'>
      <mac address='52:54:00:cb:6f:89'/>
      <source network='overcloud' bridge='brovc'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
 
    <serial type='pty'>
      <source path='/dev/pts/9'/>
      <target port='0'/>
      <alias name='serial0'/>
    </serial>
    <console type='pty' tty='/dev/pts/9'>
      <source path='/dev/pts/9'/>
      <target type='serial' port='0'/>
      <alias name='serial0'/>
    </console>
    <channel type='unix'>
      <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/domain-centos72vm/org.qemu.guest_agent.0'/>
      <target type='virtio' name='org.qemu.guest_agent.0' state='connected'/>
      <alias name='channel0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <channel type='spicevmc'>
      <target type='virtio' name='com.redhat.spice.0' state='connected'/>
      <alias name='channel1'/>
      <address type='virtio-serial' controller='0' bus='0' port='2'/>
    </channel>
    <input type='tablet' bus='usb'>
      <alias name='input0'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='spice' port='5900' autoport='yes' listen='127.0.0.1'>
      <listen type='address' address='127.0.0.1'/>
      <image compression='off'/>
    </graphics>
    <sound model='ich6'>
      <alias name='sound0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </sound>
    <video>
      <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1'/>
      <alias name='video0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <redirdev bus='usb' type='spicevmc'>
      <alias name='redir0'/>
    </redirdev>
    <redirdev bus='usb' type='spicevmc'>
      <alias name='redir1'/>
    </redirdev>
    <memballoon model='virtio'>
      <alias name='balloon0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </memballoon>
  </devices>
  <seclabel type='dynamic' model='selinux' relabel='yes'>
    <label>system_u:system_r:svirt_t:s0:c614,c762</label>
    <imagelabel>system_u:object_r:svirt_image_t:s0:c614,c762</imagelabel>
  </seclabel>
</domain>

*********************************************************
Then switch VNIC to DHCP mode
*********************************************************
Log into VIRTHOST as root and run :-

[root@Server72CentOS ~]#  virsh dumpxml centos72vm | xmllint --xpath '//interface[source/@bridge="brovc"]' -
<interface type="network">
      <mac address="52:54:00:cb:6f:89"/>
      <source network="overcloud" bridge="brovc"/>
      <target dev="vnet0"/>
      <model type="virtio"/>
      <alias name="net0"/>
      <address type="pci" domain="0x0000" bus="0x00" slot="0x03" function="0x0"/>
    </interface>

Login into undercloud and create port with MAC (just obtained) on "ctlplane"


********************************************************************************************
Switch on newly created guest centos72vm to obtain IP via DHCP on "ctlplane"
using NetworkManager GUI :-
********************************************************************************************
   Original state
  

  Switch to "DHCP" and bounce updated interface eth0 belongs to overcloud
  libvirt sub-net on VIRTHOST. All actions are done via remote connection
  to VIRTHOST from WKS F24 originally  commited QuickStart  undercloud
 and overcloud set ups.  Eth0 has been bounced



   Connect from centos72vm guest to vf24devs01 deployed on overcloud
   Compute Node :-
   

   Snapshots for VM vf24devs with floating IP 192.168.24.156
   

 
   Test connection to another VM centos72devs01 running on compute node
   in overcloud.
  
  

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