func (qc *qemuCluster) NewMachine(cfg string) (Machine, error) {
id := uuid.NewV4()
// hacky solution for cloud config ip substitution
// NOTE: escaping is not supported
qc.mu.Lock()
netif := qc.Dnsmasq.GetInterface("br0")
ip := strings.Split(netif.DHCPv4[0].String(), "/")[0]
cfg = strings.Replace(cfg, "$public_ipv4", ip, -1)
cfg = strings.Replace(cfg, "$private_ipv4", ip, -1)
cloudConfig, err := config.NewCloudConfig(cfg)
if err != nil {
qc.mu.Unlock()
return nil, err
}
if err = qc.SSHAgent.UpdateConfig(cloudConfig); err != nil {
qc.mu.Unlock()
return nil, err
}
if cloudConfig.Hostname == "" {
cloudConfig.Hostname = id.String()[:8]
}
qc.mu.Unlock()
configDrive, err := local.NewConfigDrive(cloudConfig)
if err != nil {
return nil, err
}
qm := &qemuMachine{
qc: qc,
id: id.String(),
configDrive: configDrive,
netif: netif,
}
disk, err := setupDisk(qc.conf.DiskImage)
if err != nil {
return nil, err
}
defer disk.Close()
qc.mu.Lock()
tap, err := qc.NewTap("br0")
if err != nil {
qc.mu.Unlock()
return nil, err
}
defer tap.Close()
qmMac := qm.netif.HardwareAddr.String()
qmCfg := qm.configDrive.Directory
qm.qemu = qm.qc.NewCommand(
"qemu-system-x86_64",
"-machine", "accel=kvm",
"-cpu", "host",
"-smp", "2",
"-m", "1024",
"-uuid", qm.id,
"-display", "none",
"-add-fd", "fd=3,set=1",
"-drive", "file=/dev/fdset/1,media=disk,if=virtio,format=raw",
"-netdev", "tap,id=tap,fd=4",
"-device", "virtio-net,netdev=tap,mac="+qmMac,
"-fsdev", "local,id=cfg,security_model=none,readonly,path="+qmCfg,
"-device", "virtio-9p-pci,fsdev=cfg,mount_tag=config-2")
qc.mu.Unlock()
cmd := qm.qemu.(*local.NsCmd)
cmd.Stderr = os.Stderr
cmd.ExtraFiles = append(cmd.ExtraFiles, disk) // fd=3
cmd.ExtraFiles = append(cmd.ExtraFiles, tap.File) // fd=4
if err = qm.qemu.Start(); err != nil {
return nil, err
}
// Allow a few authentication failures in case setup is slow.
sshchecker := func() error {
qm.qc.mu.Lock()
defer qm.qc.mu.Unlock()
qm.sshClient, err = qm.qc.SSHAgent.NewClient(qm.IP())
if err != nil {
return err
}
return nil
}
if err := util.Retry(sshRetries, sshTimeout, sshchecker); err != nil {
return nil, err
}
if err != nil {
qm.Destroy()
return nil, err
}
out, err := qm.SSH("grep ^ID= /etc/os-release")
if err != nil {
qm.Destroy()
return nil, err
}
if !bytes.Equal(out, []byte("ID=coreos")) {
qm.Destroy()
return nil, fmt.Errorf("Unexpected SSH output: %s", out)
}
qc.mu.Lock()
qc.machines[qm.ID()] = qm
qc.mu.Unlock()
return Machine(qm), nil
}
func (qc *QEMUCluster) NewMachine(cfg string) (Machine, error) {
id := uuid.NewV4()
// hacky solution for cloud config ip substitution
// NOTE: escaping is not supported
qc.mu.Lock()
netif := qc.Dnsmasq.GetInterface("br0")
ip := strings.Split(netif.DHCPv4[0].String(), "/")[0]
cfg = strings.Replace(cfg, "$public_ipv4", ip, -1)
cfg = strings.Replace(cfg, "$private_ipv4", ip, -1)
conf, err := NewConf(cfg)
if err != nil {
qc.mu.Unlock()
return nil, err
}
keys, err := qc.SSHAgent.List()
if err != nil {
qc.mu.Unlock()
return nil, err
}
conf.CopyKeys(keys)
qc.mu.Unlock()
configDrive, err := local.NewConfigDrive(conf.String())
if err != nil {
return nil, err
}
qm := &qemuMachine{
qc: qc,
id: id.String(),
configDrive: configDrive,
netif: netif,
}
disk, err := setupDisk(qc.conf.DiskImage)
if err != nil {
return nil, err
}
defer disk.Close()
qc.mu.Lock()
tap, err := qc.NewTap("br0")
if err != nil {
qc.mu.Unlock()
return nil, err
}
defer tap.Close()
qmMac := qm.netif.HardwareAddr.String()
qmCfg := qm.configDrive.Directory
qm.qemu = qm.qc.NewCommand(
"qemu-system-x86_64",
"-machine", "accel=kvm",
"-cpu", "host",
"-smp", "2",
"-m", "1024",
"-uuid", qm.id,
"-display", "none",
"-add-fd", "fd=3,set=1",
"-drive", "file=/dev/fdset/1,media=disk,if=virtio,format=raw",
"-netdev", "tap,id=tap,fd=4",
"-device", "virtio-net,netdev=tap,mac="+qmMac,
"-fsdev", "local,id=cfg,security_model=none,readonly,path="+qmCfg,
"-device", "virtio-9p-pci,fsdev=cfg,mount_tag=config-2")
qc.mu.Unlock()
cmd := qm.qemu.(*local.NsCmd)
cmd.Stderr = os.Stderr
cmd.ExtraFiles = append(cmd.ExtraFiles, disk) // fd=3
cmd.ExtraFiles = append(cmd.ExtraFiles, tap.File) // fd=4
if err = qm.qemu.Start(); err != nil {
return nil, err
}
if err := commonMachineChecks(qm); err != nil {
qm.Destroy()
return nil, err
}
qc.addMach(qm)
return Machine(qm), nil
}