出现了pid的错误A server is already running. 和如何改变webrick的端口值
server.pid 出错
有时进入了rails后关闭，再一次进入rails后出现了以下错误：
$ rails s
=> Booting WEBrick
=> Rails 4.0.3 application starting in development on http://0.0.0.0:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
A server is already running. Check ××/××/tmp/pids/server.pid.
Exiting
原因： server.pid 出错，进程出现了错误
解决：
$ kill -9 `cat tmp/pids/server.pid`
[1] + 26748 killed rails s
扩展：如何修改webrick端口值
转载方法一：
打开
\ruby\lib\ruby\gems\1.8\gems\rails-1.2.5\lib\commands\servers\webrick.rb
rails-{ver}
ver是你当前的rails版本.
找到
OPTIONS = {
:port => 3000,
:ip => "0.0.0.0",
:environment => (ENV['RAILS_ENV'] || "development").dup,
:server_root => File.expand_path(RAILS_ROOT + "/public/"),
:server_type => WEBrick::SimpleServer,
:charset => "UTF-8",
:mime_types => WEBrick::HTTPUtils::DefaultMimeTypes
}
把 port 后面的3000修改成你想要的端口号.
\ruby\lib\ruby\gems\1.8\gems\rails-1.2.5\lib\commands\servers\webrick.rb
rails-{ver}
ver是你当前的rails版本.
找到
OPTIONS = {
:port => 3000,
:ip => "0.0.0.0",
:environment => (ENV['RAILS_ENV'] || "development").dup,
:server_root => File.expand_path(RAILS_ROOT + "/public/"),
:server_type => WEBrick::SimpleServer,
:charset => "UTF-8",
:mime_types => WEBrick::HTTPUtils::DefaultMimeTypes
}
把 port 后面的3000修改成你想要的端口号.
方法二：
ruby script/server -p 3000
http://blog.sina.com.cn/s/blog_465f50b901008ovp.html（感谢该地址作者的分享该博客的扩展内容）
