我正在使用Capistrano将Ruby on Rails应用程序部署到Linode VPS。我使用Unicorn作为应用服务器,使用Nginx作为代理。我的问题是,由于一个明显的权限问题,我无法启动Unicorn,但我很难找到它。
使用以下Capistrano任务启动Unicorn:
task :start, :roles => :app, :except => { :no_release => true } do
run <<-CMD
cd #{current_path} && #{unicorn_bin} -c #{unicorn_config} -E #{rails_env} -D
CMD
end
我返回了ArgumentError,表明pid文件的路径是不可写的。
cap unicorn:start master [d4447d3] modified
* executing `unicorn:start'
* executing "cd /home/deploy/apps/gogy/current && /home/deploy/apps/gogy/current/bin/unicorn -c /home/deploy/apps/gogy/shared/config/unicorn.rb -E production -D"
servers: ["66.228.52.4"]
[66.228.52.4] executing command
** [out :: 66.228.52.4] /home/deploy/apps/gogy/shared/bundle/ruby/1.8/gems/unicorn-4.1.1/lib/unicorn/configurator.rb:88:in `reload':
** [out :: 66.228.52.4] directory for pid=/home/deploy/apps/shared/pids/unicorn.pid not writable (ArgumentError)
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/shared/bundle/ruby/1.8/gems/unicorn-4.1.1/lib/unicorn/configurator.rb:84:in `each'
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/shared/bundle/ruby/1.8/gems/unicorn-4.1.1/lib/unicorn/configurator.rb:84:in `reload'
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/shared/bundle/ruby/1.8/gems/unicorn-4.1.1/lib/unicorn/configurator.rb:65:in `initialize'
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/shared/bundle/ruby/1.8/gems/unicorn-4.1.1/lib/unicorn/http_server.rb:102:in `new'
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/shared/bundle/ruby/1.8/gems/unicorn-4.1.1/lib/unicorn/http_server.rb:102:in `initialize'
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/shared/bundle/ruby/1.8/gems/unicorn-4.1.1/bin/unicorn:121:in `new'
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/shared/bundle/ruby/1.8/gems/unicorn-4.1.1/bin/unicorn:121
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/current/bin/unicorn:16:in `load'
** [out :: 66.228.52.4] from /home/deploy/apps/gogy/current/bin/unicorn:16
** [out :: 66.228.52.4] master failed to start, check stderr log for details
command finished in 1032ms
failed: "rvm_path=/usr/local/rvm /usr/local/rvm/bin/rvm-shell 'default' -c 'cd /home/deploy/apps/gogy/current && /home/deploy/apps/gogy/current/bin/unicorn -c /home/deploy/apps/gogy/shared/config/unicorn.rb -E production -D'" on 66.228.52.4
最后,这里是我的Unicorn配置文件(unicorn.rb)的相关部分。
# Ensure that we're running in the production environment
rails_env = ENV['RAILS_ENV'] || 'production'
# User to run under
user 'deploy', 'deploy'
# We will spawn off two worker processes and one master process
worker_processes 2
# set the default working directory
working_directory "/home/deploy/apps/gogy/current"
# This loads the application in the master process before forking
# worker processes
# Read more about it here:
# http://unicorn.bogomips.org/Unicorn/Configurator.html
preload_app true
timeout 30
# This is where we specify the socket.
# We will point the upstream Nginx module to this socket later on
listen "/home/deploy/apps/shared/sockets/unicorn.sock", :backlog => 64
pid "/home/deploy/apps/shared/pids/unicorn.pid"
# Set the path of the log files
stderr_path "/home/deploy/apps/gogy/current/log/unicorn.stderr.log"
stdout_path "/home/deploy/apps/gogy/current/log/unicorn.stdout.log"
我在'deploy‘用户和组下使用Capistrano进行部署,这也是Unicorn应该运行的用户和组。
有人知道为什么Unicorn不能写出pid文件吗?任何帮助都将非常感谢!
发布于 2012-01-03 09:20:35
实际上,错误消息已经告诉您原因:
pid的
目录=/home/deploy/apps/shared/pids/unicorn.pid不可写
那么,目录/home/deploy/apps/shared/pids
是否存在呢?如果没有,您应该调用mkdir
来创建它。
发布于 2013-07-09 03:34:10
独角兽进程正在后台运行(-d),请键入
ps aux | grep unicorn
并终止正在运行的独角兽进程,然后再次启动。
发布于 2014-01-08 09:40:03
在capistrano 3中;如果我们将角色更改为: all,则在部署capistrano时;WARN [SKIPPING] No Matching Host for .....
和部署后所有符号链接不再工作。如果tmp/pids文件夹在符号链接数组中,则unicorn找不到tmp/pids文件夹,并显示unicorn.pid不可写。
所以我们必须使用;roles: %w{web app db}
而不是roles :all
。
Production.rb上的示例服务器行;
`server 'YOUR_SERVER_IP', user: 'YOUR_DEPLOY_USER', roles: %w{web app db}, ssh_options: { forward_agent: true }`
https://stackoverflow.com/questions/8706088
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