[ovirt-users] Communicating with ovirt agent

[Vinzenz Feenstra]

> On Jul 1, 2016, at 12:05 PM, Tadas <tadas at ring.lt> wrote:
> 
> 
> is there any documentation o oVirt guest agent commands?
> To be more precise: i need to pass commands to oVirt guest agent from
> hypervisor.
> Reading info works fine:
> 
> socat /var/lib/libvirt/qemu/channel/target/domain-20-
> win7_32bit/com.redhat.serial.0 -
> 
> {"applications": ["Python 2.7.12rc1", "SPICE Guest Tools", "Total
> Commander (Remove or Repair)", "Python 2.7 pywin32-216", "Microsoft
> .NET Framework 4.6.1", "Git version 2.9.0", "WinRAR 5.40 beta 2 (32-
> bit)", "Notepad++"], "__name__": "applications"}
> {"__name__": "host-name", "name": "WIN7_32BIT"}
> {"__name__": "os-version", "version": "Win 7”}

Every command has to be send as a whole JSON object and sent as line terminated by a \n character

The commands available are currently not documented however.

{“__name__”: “name”, … args}

- name: shutdown
  parameters:
	- timeout: optional integer (seconds)
	- reboot: optional boolean
	- message: string

- name: refresh
  parameters:
	- apiVersion: optiona integer 
            this defines what information can be exchanged

- name: hibernate:
  parameters:
	- state: disk or mem (default is disk if not specified)

if you need more you can look here:  https://github.com/oVirt/ovirt-guest-agent/blob/master/ovirt-guest-agent/OVirtAgentLogic.py#L306 <https://github.com/oVirt/ovirt-guest-agent/blob/master/ovirt-guest-agent/OVirtAgentLogic.py#L306> at the parseCommand function
or just ask here :-)

> 
> 
> I'm unable to find how to send command (lets say "shutdown") to agent?.
> echo "shutdown" | socat /var/lib/libvirt/qemu/channel/target/domain-20-
> win7_32bit/com.redhat.kvm-vdi.0  -
> Does not seem to work
> Thank you for your help.
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> Users at ovirt.org
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