我正在尝试启动一个本地工作的rails应用程序。当我运行rails puma正确启动。
服务器是ubuntu是16.04。 Ruby是2.3.1p112，rails是6.0.1，nginx是1.10.0，uniocrn是v5.2.0
Nginx好像在运行。但是，当我尝试在domainname.com上连接时，我遇到了502错误。
当我跑步时
bundle exec cap production deploy -T
我得到了这个追溯
root@ubuntu:/home/deployer/apps/appname/app# bundle exec cap production deploy --trace
** Invoke production (first_time)
** Execute production
** Invoke load:defaults (first_time)
** Execute load:defaults
cap aborted!
NoMethodError: undefined method `instance' for Capistrano::Configuration:Class
Did you mean? instance_of?
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/capistrano.rb:13:in `<top (required)>'
config/deploy.rb:1:in `require'
config/deploy.rb:1:in `<top (required)>'
/var/lib/gems/2.3.0/gems/capistrano-3.2.1/lib/capistrano/setup.rb:14:in `load'
/var/lib/gems/2.3.0/gems/capistrano-3.2.1/lib/capistrano/setup.rb:14:in `block (2 levels) in <top (required)>'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `block in execute'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `each'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:250:in `execute'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:194:in `block in invoke_with_call_chain'
/usr/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:187:in `invoke_with_call_chain'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/task.rb:180:in `invoke'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:152:in `invoke_task'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block (2 levels) in top_level'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `each'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:108:in `block in top_level'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:117:in `run_with_threads'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:102:in `top_level'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:80:in `block in run'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:178:in `standard_exception_handling'
/var/lib/gems/2.3.0/gems/rake-12.0.0/lib/rake/application.rb:77:in `run'
/var/lib/gems/2.3.0/gems/capistrano-3.2.1/lib/capistrano/application.rb:15:in `run'
/var/lib/gems/2.3.0/gems/capistrano-3.2.1/bin/cap:3:in `<top (required)>'
/usr/local/bin/cap:23:in `load'
/usr/local/bin/cap:23:in `<top (required)>'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/cli/exec.rb:74:in `load'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/cli/exec.rb:74:in `kernel_load'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/cli/exec.rb:27:in `run'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/cli.rb:335:in `exec'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/vendor/thor/lib/thor.rb:359:in `dispatch'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/cli.rb:20:in `dispatch'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/vendor/thor/lib/thor/base.rb:440:in `start'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/cli.rb:11:in `start'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/exe/bundle:32:in `block in <top (required)>'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/lib/bundler/friendly_errors.rb:121:in `with_friendly_errors'
/var/lib/gems/2.3.0/gems/bundler-1.14.3/exe/bundle:24:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
Tasks: TOP => production
这是我的config / deploy.rb
#set :repo_url, 'git@example.com:me/my_repo.git'
# Default branch is :master
# ask :branch, proc { `git rev-parse --abbrev-ref HEAD`.chomp }.call
# Default deploy_to directory is /var/www/my_app
# set :deploy_to, '/var/www/my_app'
# Default value for :scm is :git
# set :scm, :git
# Default value for :format is :pretty
# set :format, :pretty
# Default value for :log_level is :debug
# set :log_level, :debug
# Default value for :pty is false
# set :pty, true
# Default value for :linked_files is []
# set :linked_files, %w{config/database.yml}
# Default value for linked_dirs is []
# set :linked_dirs, %w{bin log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system}
# Default value for default_env is {}
# set :default_env, { path: "/opt/ruby/bin:$PATH" }
# Default value for keep_releases is 5
# set :keep_releases, 5
namespace :deploy do
desc 'Restart application'
task :restart do
on roles(:app), in: :sequence, wait: 5 do
# Your restart mechanism here, for example:
# execute :touch, release_path.join('tmp/restart.txt')
end
end
after :publishing, :restart
after :restart, :clear_cache do
on roles(:web), in: :groups, limit: 3, wait: 10 do
# Here we can do anything such as:
# within release_path do
# execute :rake, 'cache:clear'
# end
end
end
end
这是我的config / deploy / production.rb
# Simple Role Syntax
# ==================
# Supports bulk-adding hosts to roles, the primary server in each group
# is considered to be the first unless any hosts have the primary
# property set. Don't declare `role :all`, it's a meta role.
role :app, %w{deployer@appname.com}
role :web, %w{deployer@appname.com}
role :db, %w{deployer@appname.com}
# Extended Server Syntax
# ======================
# This can be used to drop a more detailed server definition into the
# server list. The second argument is a, or duck-types, Hash and is
# used to set extended properties on the server.
server 'appname.com', user: 'deployer', roles: %w{web app}, my_property: :my_value
# Custom SSH Options
# ==================
# You may pass any option but keep in mind that net/ssh understands a
# limited set of options, consult[net/ssh documentation](http://net-ssh.github.io/net-ssh/classes/Net/SSH.html#method-c-start).
#
# Global options
# --------------
# set :ssh_options, {
# keys: %w(/home/rlisowski/.ssh/id_rsa),
# forward_agent: false,
# auth_methods: %w(password)
# }
#
# And/or per server (overrides global)
# ------------------------------------
# server 'example.com',
# user: 'user_name',
# roles: %w{web app},
# ssh_options: {
# user: 'user_name', # overrides user setting above
# keys: %w(/home/user_name/.ssh/id_rsa),
# forward_agent: false,
# auth_methods: %w(publickey password)
# # password: 'please use keys'
# }
这是我的Capfile
# Load DSL and Setup Up Stages
require 'capistrano/setup'
# Includes default deployment tasks
require 'capistrano/deploy'
# Includes tasks from other gems included in your Gemfile
#
# For documentation on these, see for example:
#
# https://github.com/capistrano/rvm
# https://github.com/capistrano/rbenv
# https://github.com/capistrano/chruby
# https://github.com/capistrano/bundler
# https://github.com/capistrano/rails
#
# require 'capistrano/rvm'
# require 'capistrano/rbenv'
# require 'capistrano/chruby'
# require 'capistrano/bundler'
# require 'capistrano/rails/assets'
# require 'capistrano/rails/migrations'
# Loads custom tasks from `lib/capistrano/tasks' if you have any defined.
Dir.glob('lib/capistrano/tasks/*.rake').each { |r| import r }
我尝试降级/升级我的capfile。似乎每个人都
答案 0 :(得分：1)
Capfile 'capistrano-bundler'
Gemfile添加到您的bundle install。