OpenNebula provides two commands to interact with the system:

• onevm: to submit, control and monitor virtual machines
• onehost: to add, delete and monitor hosts

These two commands share common options that are described here:

• -l, –list x,y,z: Selects columns to display with list command.
• –list-columns: Information about the columns available to display, order or filter.
• -o, –order x,y,z: Order by these columns, column starting with - means decreasing order.
• -f, –filter x,y,z: Filter data. An array is specified with column=value pairs.
• -d, –delay seconds: Sets the delay in seconds for top command.
• -h, –help: Shows help information.
• -v, –version: Shows version and copyright information.

This command enables the user to manage virtual machines in the Open Nebula server. The user can allocate, deploy, migrate, suspend, resume and shutdown a virtual machine with the functionality present in onevm.

    onevm [<options>] <command> [<parameters>]

submit

Submits a new virtual machine, adding it to the ONE VM pool. It requires the filename of the VM template.

    onevm submit <template>

deploy

Starts a previously submitted VM on a specific host

    onevm deploy <vm_id> <host_id>

shutdown

Shutdown an already deployed VM

    onevm shutdown <vm_id>   

livemigrate

Migrates a running VM to another host without downtime

    onevm livemigrate <vm_id> <host_id>   

migrate

Saves a running VM and starts it again in the specified host

    onevm migrate <vm_id> <host_id>

suspend

Saves a running VM

    onevm suspend <vm_id> 

resume

Resumes the execution of a saved VM

    onevm resume <vm_id>   

delete Deletes a VM from the pool

    onevm delete <vm_id>

list

Shows VMs in the pool

    onevm list   

show

Gets information about a specific VM

    onevm show <vm_id>

top

Lists VMs continuously

    onevm top

history

Gets history from VMs, if no vm_id is provided it will list history for all known VMs

    onevm history [<vm_id> <vm_id> ...]

This command enables the user to manage hosts in the Open Nebula server. It provides functionality to allocate, get information and delete a particular host or to list all the available hosts.

    onehost <command> [<parameters>]

add

Adds a new machine to the pool

    onehost add <hostname> <im_mad> <vmm_mad>

im_mad and vmm_mad as written in oned.conf.

show

Gets info from a single host

    onehost show <host_id>

delete

Removes a machine from the pool

    onehost delete <host_id>

list

Lists machines in the pool

    onehost list

enable

Enables host

    onehost enable <host_id>

disable

Disables host

    onehost disable <host_id>

top

Lists hosts continuously

    onehost top