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# go-qemu examples
This folder contains example applications that demonstrate the use of the
go-qemu and go-qemu/hypervisor packages.
If the program is executed using the `unix` named network (i.e locally
from the hypervisor host), the user under which the program executes on
needs belong to `libvirtd` group
so the account has access to `/var/run/libvirt/libvirt-sock`.
In case of executing the program remotely and connecting through `tcp`,
you could configure libvirtd on the hypervisor host to allow tcp connections.
Of course, this is not secure.
To see the list of posible arguments for each program, use `--help`.
#### hypervisor_domain_list
[hypervisor_domain_list](./hypervisor_domain_list) demonstrates how to use
the [hypervisor](https://godoc.org/github.com/digitalocean/go-qemu/hypervisor)
package to obtain a list of the domains from the connected hypervisor.
The list of domains returned is of type:
[go-qemu/Domain](https://godoc.org/github.com/digitalocean/go-qemu#Domain).
To run:
```{r, engine='bash', count_lines}
$ go get github.com/digitalocean/go-qemu/...
$ go run examples/hypervisor_domain_list/main.go -network=tcp \
-address="hypervisorhost:16509"
```
You should have an output similar to this:
```{r, engine='bash', count_lines}
Connecting to unix:///var/run/libvirt/libvirt-sock
**********Domains**********
centos7
ubuntu14.04
debian8
***************************
```
#### domain_details
[domain_details](./domain_details) domanstrates how to use the
[go-qemu](https://godoc.org/github.com/digitalocean/go-qemu)
to connect to a hypervisor host using
[qmp.NewLibvirtRPCMonitor](https://godoc.org/github.com/digitalocean/go-qemu/qmp#LibvirtRPCMonitor)
and get the details for a specified domain.
To run:
```{r, engine='bash', count_lines}
$ go get github.com/digitalocean/go-qemu/...
$ go run examples/domain_details/main.go
or
$ go run examples/domain_details/main.go -network=tcp \
-address="hypervisorhost:16509" -domainName="ubuntu14.04"
```
You should have an output similar to this:
```{r, engine='bash', count_lines}
Connecting to Connecting to unix:///var/run/libvirt/libvirt-sock
Version: 1.5.3
Status: running
[ PCIDevices ]
======================================
[ID] [Description]
======================================
[ ] [ Host bridge]
[ ] [ ISA bridge]
[ ] [ IDE controller]
[ ] [ Bridge]
[ ] [ VGA controller]
[ net0] [ Ethernet controller]
[ sound0] [ Audio controller]
[virtio-serial0] [ ]
[ ] [ USB controller]
[ ] [ USB controller]
[ ] [ USB controller]
[ usb] [ USB controller]
[virtio-disk0] [ SCSI controller]
[ balloon0] [ ]
[ BlockDevices ]
========================================================================
Device Driver File
========================================================================
drive-virtio-disk0 qcow2 /var/lib/libvirt/images/ubuntu14.04.qcow2
drive-ide0-0-0
```
#### domain_system_powerdown
[domain_system_powerdown](./domain_system_powerdown) demonstrates how to use
the [hypervisor](https://godoc.org/github.com/digitalocean/go-qemu/hypervisor)
package to shut off the specified domain.
To run:
```{r, engine='bash', count_lines}
$ go get github.com/digitalocean/go-qemu/...
$ go run examples/domain_system_powerdown/main.go -domainName="ubuntu14.04"
or
$ go run examples/domain_system_powerdown/main.go -network=tcp \
-address="hypervisorhost:16509" -domainName="ubuntu14.04"
```
You should have an output similar to this:
```{r, engine='bash', count_lines}
Connecting to unix:///var/run/libvirt/libvirt-sock
Domain should be shut off now
```
|
