流浪错误：NFS报告您的导出文件无效

我正在尝试使用这些说明来建立Discourse开发环境。但是，当我运行Vagrant时，出现错误：

NFS报告您的导出文件无效。Vagrant在对文件进行任何更改之前会进行此检查。请更正以下问题，然后执行“无用重新加载”：

无法打开/ etc / exports

我检查了一下，但是没有etc / exports文件夹，所以我创建了一个文件夹并运行了vagrant reload。这让我：

/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/中的/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/hosts/bsd/host.rb:146:in read': Is a directory - /etc/exports (Errno::EISDIR) from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/hosts/bsd/host.rb:146:innfs_prune'插件/synced_folders/nfs/synced_folder.rb:68：在cleanup' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/synced_folder_cleanup.rb:24:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/synced_folder_cleanup.rb:22:in的通话中each_key' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/synced_folder_cleanup.rb:22:in从/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34中call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/prepare_nfs_valid_ids.rb:12:in调用：从/Applications/Vagrant/embedded/gems/gems/vagrant-1.4调用call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/handle_forwarded_port_collisions.rb:118:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in中的.1 / lib / vagrant / action / warden.rb：34：in call'call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/prepare_forwarded_port_collision_params.rb:30:in从/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34中call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/env_set.rb:19:in调用：从/Applications/Vagrant/embedded/gems/gems/vagrant-1.4调用.1 / lib / vagrant / action / warden.rb：34：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/provision.rb:52:incall'从/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/clear_forwarded_ports.rb:13:incall来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4中的“ /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/set_name.rb:19:incall”。 1 / lib / vagrant / action / warden.rb：34：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/clean_machine_folder.rb:17:incall'从/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/check_accessible.rb:18:incall'来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:incall' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:95:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34：in call'from call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in/ Applications / Vagrant / embedded / gems / gems / vagrant 中的finalize_action块-1.4.1 / lib / vagrant / action / builder.rb：116：call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69:in来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/util/busy.rb中的运行中块： 19：在busy' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69:in运行中'来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/call.rb:51 ：在运行中'从call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in/ Applications / Vagrant / embedded / gems / gems / vagrant-1.4.1 / lib / vagrant / action / warden.rb：95：in call'from block in finalize_action' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb ：34：incall' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builder.rb:116:in从/Applications/Vagrant/embedded/gems/gems/vagrant-1.4中调用/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69:in block in run' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/util/busy.rb:19:inbusy .1 / lib / vagrant / action / runner.rb：69：in call'from run' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/call.rb:51:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:95:inblock在/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:incall中来自/ Applications / Vagrant / embedded / gems / gems / vagrant- 1.4.1 / lib / vagrant / action / builder.rb：116：在call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/util/busy.rb:19中运行中：在busy' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69:incall' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in从/ Applications / Vagrant / embedded / gems / gems / vagrant 运行/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/call.rb:51:in call -1.4.1 / lib / vagrant / action / builtin / config_validate.rb：25：in call'from call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/check_virtualbox。 rb：17：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:incall'from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/call.rb:57:in call'from call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in/ Applications / Vagrant / embedded / gems / gems / vagrant-1.4.1 / plugins / providers / virtualbox / action / check_virtualbox.rb：17：in call'from call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action /builtin/config_validate.rb:25:incall' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:95:in block in finalize_action' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:incall'from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4 .1 / lib / vagrant / action / warden.rb：34：in call'from call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builder.rb:116:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69:in block in run' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/util/busy.rb:19:inbusy来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4中的“ /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69：in run' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/call.rb:51:incall”。 1 / lib / vagrant / action / warden.rb：34：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/check_virtualbox.rb:17:incall'从/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34：in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builder.rb:116:incall'来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69:inblock in run' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/util/busy.rb:19:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/runner.rb:69:in run' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/machine.rb:147:inaction'from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4 .1 / plugins / commands / reload / command.rb：37：在block in execute' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/plugin/v2/command.rb:193:in/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/plugin/v2/command.rb中with_target_vms的块中： 191：each' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/plugin/v2/command.rb:191:in来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/commands/reload/command 中的with_target_vms.rb ：36 ：in execute' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/cli.rb:38:inexecute'来自/ Applications / Vagrant / embedded / gems / gems / cli' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/bin/vagrant:127:in来自/Applications/Vagrant/bin/../embedded/gems/bin/vagrant:23:in load' from /Applications/Vagrant/bin/../embedded/gems/bin/vagrant:23:in'的vagrant-1.4.1 / lib / vagrant / environment.rb：484：in '

我在Mac（OS X 10.6.8）上。我该如何解决？我尝试搜索原始错误消息，发现的只有几个存储库，该存储库包含引发该错误的Vagrant源代码。

尝试将Discourse中提到的VirtualBox和Vagrant的已知良好版本用作您的第一个Rails应用程序：

• 流浪汉 1.1.2
• 的VirtualBox 4.2.10

我在Mac（OS X 10.9（Mavericks））上遇到了同样的问题，但是回滚到这些版本似乎可以解决我的问题。

我在VirtualBox安装中安装了一些以前的映像/框，因此已经有一些无效的条目/etc/exports。因此，我不得不清理该文件并重新启动我的Vagrant框。

NFS is reporting that your exports file is invalid. Vagrant does
this check before making any changes to the file. Please correct
the issues below and execute "vagrant reload":

这是我在主机上执行的操作：

sudo rm /etc/exports
sudo touch /etc/exports

vagrant halt
vagrant up --provision

我在OS X 10.9 Mavericks（13A603）上遇到了Vagrant 1.4.1和VirtualBox 4.3.6的问题。我能够用一个简单的命令来修复它，以创建丢失的/ etc / exports文件。如以下注释中所述，在OS X而不是guest虚拟机上运行它。

$ sudo touch /etc/exports

这样我就能够成功运行vagrant up。我确实遇到了另一个错误，其中“来宾添加”不是最新的，但我通过安装vagrant-vbguest插件解决了该问题。

$ vagrant plugin install vagrant-vbguest

然后很快vagrant reload，我就开始跑步了！

对我来说，此错误开始出现在正在工作的Vagrant环境中。

我已经重命名了Vagrant运行所在的目录。要修复它，我运行了'sudo vi / etc / exports'并修复了路径名，使其指向我的当前目录。

这样的事情我也经历过。我从另一个项目复制了Vagrantfile，却忘记更改NFS设置。这导致当前VM挂载了我从中复制原始Vagrantfile的VM的父文件夹。所以我这样做：

vagrant halt
vagrant up

仍然出现相同的错误。因此，我找到了位于/ etc / exports的导出文件，如下所示：

# VAGRANT-BEGIN: 501 64e10d4d-342e-4f55-b69a-97edda35742f
"/Users/[username]/vagrant" 192.168.11.12 -alldirs -mapall=501:20
# VAGRANT-END: 501 64e10d4d-342e-4f55-b69a-97edda35742f
# VAGRANT-BEGIN: 501 b3c6e7fe-95d4-48db-8876-c89d3e07af8d
"/Users/[username]/Sites/molitech-oms" 192.168.11.124 -alldirs -mapall=501:20
# VAGRANT-END: 501 b3c6e7fe-95d4-48db-8876-c89d3e07af8d
# VAGRANT-BEGIN: 501 3e2aabfd-ce63-441b-85a2-1b51e8beb863
"/Users/[username]/Sites/app" 192.168.11.125 -alldirs -mapall=501:20
# VAGRANT-END: 501 3e2aabfd-ce63-441b-85a2-1b51e8beb863
# VAGRANT-BEGIN: 501 ff92e353-9f6d-48ee-9d76-e29b33f1dd60
"/Users/[username]/Sites" 192.168.11.126 -alldirs -mapall=501:20
# VAGRANT-END: 501 ff92e353-9f6d-48ee-9d76-e29b33f1dd60

最后两个路径相同。所以我删除了最后三行并运行：

vagrant halt && vagrant up

现在一切似乎都正常。

OSX 10.11.1流浪汉1.7.4

我不想经历降级的麻烦。这就是我所做的（仍然花了一段时间，但是比降级IMHO麻烦些）：

1. 在VM Vagrantfile中，对于任何同步的文件夹，禁用NFS

   config.vm.synced_folder ".", "/vagrant", nfs: false

2. 删除了/ etc / exports

   sudo mv /etc/exports ~/Desktop/exports

3. 重写/ etc / exports

   vagrant up

4. 如果要/需要在VM上启用NFS，请重新启用

   config.vm.synced_folder ".", "/vagrant", nfs: true

只需运行以下命令：

sudo rm /etc/exports
sudo touch /etc/exports
vagrant reload

请不要使用vagrant up --provision，如果你不知道，这将您的项目不覆盖当前状态。

在Ubuntu 12主机/ Ubuntu 12访客上，以下代码对我有用：

nfs_setting = RUBY_PLATFORM =~ /darwin/ || RUBY_PLATFORM =~ /linux/
config.vm.synced_folder ".", "/vagrant", id: "vagrant-root", type: "nfs", nfs_udp: "true", nfs_version: "4", :nfs => nfs_setting

注意：我还必须将由Vagrant确定的主机IP地址和由Vagrant确定的访客IP地址添加到防火墙例外中。