Example #1
func checkMasterVersion(c *client.Client, want string) error {
	v, err := c.ServerVersion()
	if err != nil {
		return fmt.Errorf("checkMasterVersion() couldn't get the master version: %v", err)
	// We do prefix trimming and then matching because:
	// want looks like:  0.19.3-815-g50e67d4
	// got  looks like: v0.19.3-815-g50e67d4034e858-dirty
	got := strings.TrimPrefix(v.GitVersion, "v")
	if !strings.HasPrefix(got, want) {
		return fmt.Errorf("master had kube-apiserver version %s which does not start with %s",
			got, want)
	Logf("Master is at version %s", want)
	return nil