Ruby-on-rails 流浪者，权限被拒绝@ rb_sysopen - /home/vagrant
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/32942400/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Vagrant, Permission denied @ rb_sysopen - /home/vagrant
提问by lalala
When I run rails s on vagrant, I got the following error. It seems that the file "/home/vagrant/Realarts/tmp/pids/server.pid" does not exist, however rails tries to access it.How should I do solve the problem?
当我在 vagrant 上运行 rails s 时，出现以下错误。似乎文件“/home/vagrant/Realarts/tmp/pids/server.pid”不存在，但是rails尝试访问它。我应该如何解决问题？
[vagrant@localhost Realarts]$ rails s
=> Booting WEBrick
=> Rails 4.2.4 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
Exiting
/home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/server.rb:354:in `initialize': Permission denied @ rb_sysopen - /home/vagrant/Realarts/tmp/pids/server.pid (Errno::EACCES)
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/server.rb:354:in `open'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/server.rb:354:in `write_pid'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/rack-1.6.4/lib/rack/server.rb:276:in `start'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/server.rb:80:in `start'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:80:in `block in server'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `tap'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:75:in `server'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/commands.rb:17:in `<top (required)>'
from /home/vagrant/Realarts/bin/rails:8:in `require'
from /home/vagrant/Realarts/bin/rails:8:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/spring-1.4.0/lib/spring/client/rails.rb:28:in `load'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/spring-1.4.0/lib/spring/client/rails.rb:28:in `call'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/spring-1.4.0/lib/spring/client/command.rb:7:in `call'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/spring-1.4.0/lib/spring/client.rb:28:in `run'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/spring-1.4.0/bin/spring:49:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/spring-1.4.0/lib/spring/binstub.rb:11:in `load'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/spring-1.4.0/lib/spring/binstub.rb:11:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /home/vagrant/.rbenv/versions/2.2.3/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
from /home/vagrant/Realarts/bin/spring:13:in `<top (required)>'
from bin/rails:3:in `load'
from bin/rails:3:in `<main>'
回答by Frederic Henri
Like Sri mentioned, Rails needs ownership to write and re-write the pid upon each server start.
就像 Sri 提到的那样，Rails 需要拥有在每个服务器启动时编写和重写 pid 的所有权。
you need to make sure then your folder is accessible, easiest is to run from the VM
您需要确保您的文件夹可以访问，最简单的方法是从 VM 运行
sudo chmod -R 777 /home/vagrant/Realarts/tmp/
you could also make it from your Vagrantfile, something like
你也可以从你的Vagrantfile，比如
config.vm.synced_folder ".", "/vagrant", owner: "vagrant",: mount_options => ["dmode=777"]
