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image.go
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image.go
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package instance
import (
"context"
"fmt"
"path"
"strings"
"github.com/k8s-proxmox/proxmox-go/proxmox"
"github.com/pkg/errors"
"sigs.k8s.io/controller-runtime/pkg/log"
infrav1 "github.com/k8s-proxmox/cluster-api-provider-proxmox/api/v1beta1"
)
const (
rawImageDirPath = etcCAPPX + "/images"
)
// reconcileBootDevice
func (s *Service) reconcileBootDevice(ctx context.Context, vm *proxmox.VirtualMachine) error {
log := log.FromContext(ctx)
log.Info("reconciling boot device")
// boot disk
log.Info("resizing boot disk")
if err := vm.ResizeVolume(ctx, bootDvice, s.scope.GetHardware().Disk); err != nil {
return err
}
return nil
}
// setCloudImage downloads OS image into Proxmox node
// so that proxmox can import image to the storage from there
func (s *Service) setCloudImage(ctx context.Context) error {
log := log.FromContext(ctx)
log.Info("setting cloud image")
image := s.scope.GetImage()
rawImageFilePath := rawImageFilePath(image)
vnc, err := s.vncClient(s.scope.NodeName())
if err != nil {
return errors.Errorf("failed to create vnc client: %v", err)
}
defer vnc.Close()
// download image
ok, _ := isChecksumOK(vnc, image, rawImageFilePath)
if !ok { // if checksum is ok, it means the image is already there. skip installing
out, _, err := vnc.Exec(ctx, fmt.Sprintf("mkdir -p %s && mkdir -p %s", etcCAPPX, rawImageDirPath))
if err != nil {
return errors.Errorf("failed to create dir %s: %s : %v", rawImageDirPath, out, err)
}
log.Info("downloading node image. this will take few mins.")
out, _, err = vnc.Exec(ctx, fmt.Sprintf("wget %s -O %s", image.URL, rawImageFilePath))
if err != nil {
return errors.Errorf("failed to download image: %s : %v", out, err)
}
if _, err = isChecksumOK(vnc, image, rawImageFilePath); err != nil {
return errors.Errorf("failed to confirm checksum: %v", err)
}
}
return nil
}
func findValidChecksumCommand(csType string) (string, error) {
csType = strings.ToLower(csType)
switch csType {
case "sha256", "sha256sum":
return "sha256sum", nil
case "md5", "md5sum":
return "md5sum", nil
default:
return "", errors.Errorf("checksum type %s is not supported", csType)
}
}
func isChecksumOK(client *proxmox.VNCWebSocketClient, image infrav1.Image, path string) (bool, error) {
if image.Checksum != "" {
cscmd, err := findValidChecksumCommand(*image.ChecksumType)
if err != nil {
return false, err
}
cmd := fmt.Sprintf("echo -n '%s %s' | %s --check -", image.Checksum, path, cscmd)
out, _, err := client.Exec(context.TODO(), cmd)
if err != nil {
return false, errors.Errorf("failed to confirm checksum: %s : %v", out, err)
}
return true, nil
}
return false, nil
}
func rawImageFilePath(image infrav1.Image) string {
fileName := path.Base(image.URL)
if image.Checksum != "" {
fileName = image.Checksum + "." + fileName
}
return fmt.Sprintf("%s/%s", rawImageDirPath, fileName)
}