ruby-on-rails – Capistrano部署失败的git：check – 权限被拒

登台服务器操作系统：Ubuntu 16.04 LTS

我一直在努力让我的登台服务器上运行基本的Capistrano部署.我跟着this guide设立了Capistrano.

由于涉嫌无权访问GitLab上的repo,部署过程总是在git：check阶段失败.我确信我的SSH代理转发工作正常,因为我能够SSH到我的服务器并使用我的SSH密钥访问GitLab. SSH密钥不存储在我的服务器上的任何位置：

$ssh deploy@myserver.com

deploy@MyServer:~$ssh -T git@gitlab.com
debug1: client_input_channel_open: ctype auth-agent@openssh.com rchan 2 win 65536 max 16384
debug1: channel 1: new [authentication agent connection]
debug1: confirm auth-agent@openssh.com
Welcome to GitLab,Alexander!debug1: channel 1: FORCE input drain

到目前为止,关于这个问题的所有问题都没有对我有用.

这是我的部署文件：

deploy.rb

set :application,"myapp"
set :branch,"master"
set :repo_url,"git@gitlab.com:MyApp/myapp.git"

# Defaults to false
# Skip migration if files in db/migrate were not modified
set :conditionally_migrate,true

set :ssh_options,{ forward_agent: true }

set :rvm_ruby_version,'2.2.6'

# Default deploy_to directory is /var/www/my_app_name
set :deploy_to,"/var/www/#{fetch(:application)}/"
set :deploy_user,"deploy"

# Tells Capistrano to store config/database.yml file inside a directory called /shared,which is meant for any files
# we want to persist between deploys
set :linked_files,fetch(:linked_files,[]).push('config/database.yml','config/secrets.yml')

# Directories that are meant to persist between deploys,and they will also be stored inside /shared
set :linked_dirs,fetch(:linked_dirs,[]).push('bin','log','tmp/pids','tmp/cache','tmp/sockets','vendor/bundle','public/system','public/uploads')

# The specs that should be run before deployment is allowed to continue
set :tests,[]

# Delayed Job Config: https://github.com/AgileConsultingLLC/capistrano3-delayed-job
set :delayed_job_workers,3

# Keep the last 5 deploys for rollback purposes
set :keep_releases,5

namespace :deploy do
  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

staging.rb

set :stage,:staging
set :rails_env,:staging

role :app,%w{deploy@myserver.com}
role :web,%w{deploy@myserver.com}
role :db,%w{deploy@myserver.com}

以下是部署时的Capistrano调试日志：

$bundle exec cap staging deploy --trace
** Invoke staging (first_time)
** Execute staging
** Invoke load:defaults (first_time)
** Execute load:defaults
** Invoke rvm:hook (first_time)
** Invoke passenger:rvm:hook (first_time)
** Invoke passenger:test_which_passenger (first_time)
** Execute passenger:test_which_passenger
** Execute passenger:rvm:hook
** Execute rvm:hook
** Invoke rvm:check (first_time)
** Execute rvm:check
rvm 1.29.3 (latest) by Michal Papis,Piotr Kuczynski,Wayne E. Seguin [https://rvm.io]
ruby-2.2.6
ruby 2.2.6p396 (2016-11-15 revision 56800) [x86_64-linux]
** Invoke bundler:map_bins (first_time)
** Invoke passenger:bundler:hook (first_time)
** Execute passenger:bundler:hook
** Execute bundler:map_bins
** Invoke deploy:set_rails_env (first_time)
** Execute deploy:set_rails_env
** Invoke deploy:set_linked_dirs (first_time)
** Execute deploy:set_linked_dirs
** Invoke deploy:set_rails_env
** Invoke deploy (first_time)
** Execute deploy
** Invoke deploy:starting (first_time)
** Execute deploy:starting
** Invoke deploy:check (first_time)
** Invoke git:check (first_time)
** Invoke git:wrapper (first_time)
** Execute git:wrapper
00:00 git:wrapper
      01 mkdir -p /tmp
    ? 01 deploy@myserver.com 0.286s
      Uploading /tmp/git-ssh-myapp-staging-localuser.sh 100.0%
      02 chmod 700 /tmp/git-ssh-myapp-staging-localuser.sh
    ? 02 deploy@myserver.com 0.277s
** Execute git:check
00:01 git:check
      01 git ls-remote git@gitlab.com:MyApp/myapp.git HEAD
      01 Permission denied (publickey).
      01 fatal: Could not read from remote repository.
      01
      01 Please make sure you have the correct access rights
      01 and the repository exists.
cap aborted!
SSHKit::Runner::ExecuteError: Exception while executing as deploy@myserver.com: git exit status: 128
git stdout: Nothing written
git stderr: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/runners/parallel.rb:15:in `rescue in block (2 levels) in execute'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/runners/parallel.rb:11:in `block (2 levels) in execute'

Caused by:
SSHKit::Command::Failed: git exit status: 128
git stdout: Nothing written
git stderr: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/command.rb:99:in `exit_status='
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/backends/netssh.rb:169:in `execute_command'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/backends/abstract.rb:141:in `block in create_command_and_execute'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/backends/abstract.rb:141:in `tap'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/backends/abstract.rb:141:in `create_command_and_execute'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/backends/abstract.rb:74:in `execute'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/capistrano-3.10.1/lib/capistrano/scm/git.rb:77:in `git'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/capistrano-3.10.1/lib/capistrano/scm/git.rb:38:in `check_repo_is_reachable'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/capistrano-3.10.1/lib/capistrano/scm/tasks/git.rake:19:in `block (4 levels) in eval_rakefile'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/backends/abstract.rb:93:in `with'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/capistrano-3.10.1/lib/capistrano/scm/tasks/git.rake:18:in `block (3 levels) in eval_rakefile'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/backends/abstract.rb:29:in `instance_exec'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/backends/abstract.rb:29:in `run'
C:/Ruby22/lib/ruby/gems/2.2.0/gems/sshkit-1.15.1/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
Tasks: TOP => deploy:check => git:check
The deploy has failed with an error: Exception while executing as deploy@myserver.com: git exit status: 128
git stdout: Nothing written
git stderr: Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
** Invoke deploy:failed (first_time)
** Execute deploy:failed


** DEPLOY FAILED
** Refer to log/capistrano.log for details. Here are the last 20 lines:


 DEBUG [6b6ba2d0] Finished in 0.471 seconds with exit status 0 (successful).

 DEBUG [c6e2d7dc] Running ~/.rvm/bin/rvm 2.2.6 do ruby --version as deploy@myserver.com

 DEBUG [c6e2d7dc] Command: ~/.rvm/bin/rvm 2.2.6 do ruby --version

 DEBUG [c6e2d7dc]       ruby 2.2.6p396 (2016-11-15 revision 56800) [x86_64-linux]

 DEBUG [c6e2d7dc] Finished in 0.608 seconds with exit status 0 (successful).

  INFO [fd5500a8] Running /usr/bin/env mkdir -p /tmp as deploy@myserver.com

 DEBUG [fd5500a8] Command: /usr/bin/env mkdir -p /tmp

  INFO [fd5500a8] Finished in 0.286 seconds with exit status 0 (successful).

 DEBUG Uploading /tmp/git-ssh-myapp-staging-localuser.sh 0.0%

  INFO Uploading /tmp/git-ssh-myapp-staging-localuser.sh 100.0%

  INFO [f33d4873] Running /usr/bin/env chmod 700 /tmp/git-ssh-myapp-staging-localuser.sh as deploy@myserver.com

 DEBUG [f33d4873] Command: /usr/bin/env chmod 700 /tmp/git-ssh-myapp-staging-localuser.sh

  INFO [f33d4873] Finished in 0.277 seconds with exit status 0 (successful).

  INFO [86d3cd5a] Running /usr/bin/env git ls-remote git@gitlab.com:MyApp/myapp.git HEAD as deploy@myserver.com

 DEBUG [86d3cd5a] Command: ( export GIT_ASKPASS="/bin/echo" GIT_SSH="/tmp/git-ssh-myapp-staging-localuser.sh" ; /usr/bin/env git ls-remote git@gitlab.com:MyApp/myapp.git HEAD )

 DEBUG [86d3cd5a]       Permission denied (publickey).

 DEBUG [86d3cd5a]       fatal: Could not read from remote repository.



Please make sure you have the correct access rights

and the repository exists.

我已经尝试手动运行Capistrano在本地和远程服务器上尝试的命令,并且它们都成功了.我真的被卡住了,任何帮助都会非常感激！