使用导入到VirtualBox中的导出Vagrant框时，SSH私钥身份验证失败

我用的是一个出口的流浪汉盒子。文件扩展名为.ova。 我将其导入VirtualBox，并将其id放入“/home/user/Documents/vagrant/.vagrant/machines/default”文件夹中的“id”文件中。在此之后，我运行“流浪者向上”命令。我得到以下输出

$ vagrant halt
==> default: Attempting graceful shutdown of VM...
    default: Guest communication could not be established! This is usually because
    default: SSH is not running, the authentication information was changed,
    default: or some other networking issue. Vagrant will force halt, if
    default: capable.
==> default: Forcing shutdown of VM...

调试输出

$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Clearing any previously set forwarded ports...
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
    default: Adapter 1: nat
==> default: Forwarding ports...
    default: 3001 (guest) => 3003 (host) (adapter 1)
    default: 3000 (guest) => 9090 (host) (adapter 1)
    default: 8080 (guest) => 9091 (host) (adapter 1)
    default: 8161 (guest) => 8166 (host) (adapter 1)
    default: 22 (guest) => 2222 (host) (adapter 1)
==> default: Running 'pre-boot' VM customizations...
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
    default: SSH address: 127.0.0.1:2222
    default: SSH username: vagrant
    default: SSH auth method: private key
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
Timed out while waiting for the machine to boot. This means that
Vagrant was unable to communicate with the guest machine within
the configured ("config.vm.boot_timeout" value) time period.

If you look above, you should be able to see the error(s) that
Vagrant had when attempting to connect to the machine. These errors
are usually good hints as to what may be wrong.

If you're using a custom box, make sure that networking is properly
working and you're able to connect to the machine. It is a common
problem that networking isn't setup properly in these boxes.
Verify that authentication configurations are also setup properly,
as well.

If the box appears to be booting properly, you may want to increase
the timeout ("config.vm.boot_timeout") value.

SSH超时，虽然身份验证失败，但我仍然能够使用“vagrant SSH”将SSH连接到我的计算机，但是没有创建我在vagrant文件中定义的同步文件夹

我正在使用：

流浪版本：流浪1.8.1

VirtualBox版本：5.0.40版

主机操作系统：Ubuntu 16.04 LTS

来宾操作系统：CentOS 7.0

流浪汉档案

Vagrant.configure(2) do |config|
config.vm.box = "oneops"

 # Use the vagrant-cachier plugin, if installed, to cache downloaded packages
  if Vagrant.has_plugin?("vagrant-cachier")
    config.cache.scope = :box
  end

  config.vm.network "forwarded_port", guest: 3001, host: 3003
  config.vm.network "forwarded_port", guest: 3000, host: 9090
  config.vm.network "forwarded_port", guest: 8080, host: 9091
  config.vm.network "forwarded_port", guest: 8161, host: 8166

  config.vm.provider "virtualbox" do |vb|
   vb.gui = false
   vb.memory = 6144
   vb.customize ["modifyvm", :id, "--cpuexecutioncap", "70"]
  end

  config.vm.synced_folder "~/Documents/Share/", "/home/vagrant/Documents/Share/"
end

最终结果：我无法在主机和来宾计算机之间创建同步文件夹。当我尝试使用“vagrant halt”停止机器时，我得到以下输出

$ vagrant halt
==> default: Attempting graceful shutdown of VM...
    default: Guest communication could not be established! This is usually because
    default: SSH is not running, the authentication information was changed,
    default: or some other networking issue. Vagrant will force halt, if
    default: capable.
==> default: Forcing shutdown of VM...

有人能帮我弄清楚这里可能有什么问题吗