VM Error Command execution fail Cent OS 7

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1

Fri Sep 9 13:06:12 2016 [Z0][DiM][I]: New VM state is ACTIVE.
Fri Sep 9 13:06:12 2016 [Z0][LCM][I]: New VM state is PROLOG.
Fri Sep 9 13:06:13 2016 [Z0][LCM][I]: New VM state is BOOT
Fri Sep 9 13:06:13 2016 [Z0][VMM][I]: Generating deployment file: /var/lib/one/vms/2/deployment.0
Fri Sep 9 13:06:13 2016 [Z0][VMM][I]: ExitCode: 0
Fri Sep 9 13:06:13 2016 [Z0][VMM][I]: Successfully execute network driver operation: pre.
Fri Sep 9 13:06:14 2016 [Z0][VMM][I]: Command execution fail: cat << EOT | /var/tmp/one/vmm/kvm/deploy ‘/var/lib/one//datastores/101/2/deployment.0’ ‘localhost’ 2 localhost
Fri Sep 9 13:06:14 2016 [Z0][VMM][I]: error: Failed to create domain from /var/lib/one//datastores/101/2/deployment.0
Fri Sep 9 13:06:14 2016 [Z0][VMM][I]: error: Cannot get interface MTU on ‘br0’: No such device
Fri Sep 9 13:06:14 2016 [Z0][VMM][E]: Could not create domain from /var/lib/one//datastores/101/2/deployment.0
Fri Sep 9 13:06:14 2016 [Z0][VMM][I]: ExitCode: 255
Fri Sep 9 13:06:14 2016 [Z0][VMM][I]: Failed to execute virtualization driver operation: deploy.
Fri Sep 9 13:06:14 2016 [Z0][VMM][E]: Error deploying virtual machine: Could not create domain from /var/lib/one//datastores/101/2/deployment.0
Fri Sep 9 13:06:14 2016 [Z0][DiM][I]: New VM state is FAILED

2

apparently, something is wrong with the device you assigned to the virtual network ?
br0 should be an existing interface you use for bridging VM network traffic.

3

Just to add to what @VURoland said, this is documented here: http://docs.opennebula.org/5.0/deployment/node_installation/kvm_node_installation.html#step-5-networking-configuration