SSHKit::Runner::ExecuteErrorエラーがRails アプリデプロイ時に出ます

Rails 初学者です。
Rails5 / Capistrano3 でAWSに自作のアプリをデプロイしようとしたところ、以下のようなエラーが出ました。
アドバイスをいただけたらと思います。

環境
Ruby 2.6.0
Rails 5.2.0
Capistrano 3.11.0
サーバー AWS linux
Nginx
Unicorn

##発生している問題

エラーを見る限り、ssh接続、もしくはssh接続に関する記述に問題があるのではと思っているのですが、試したこと以外に検討がつきません。

実行したコマンド
$ bundle exec cap production deploy

Error
1#<Thread:0x00007fde259a0348@/Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/runners/parallel.rb:10 run> terminated with exception (report_on_exception is true):
2Traceback (most recent call last):
3        21: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
4        20: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:29:in `run'
5        19: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:29:in `instance_exec'
6        18: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/capistrano-rbenv-2.1.4/lib/capistrano/tasks/rbenv.rake:10:in `block (3 levels) in <top (required)>'
7        17: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:59:in `test'
8        16: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:145:in `create_command_and_execute'
9        15: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:145:in `tap'
10        14: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:145:in `block in create_command_and_execute'
11        13: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/netssh.rb:129:in `execute_command'
12        12: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/netssh.rb:176:in `with_ssh'
13        11: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/connection_pool.rb:59:in `with'
14        10: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/connection_pool.rb:59:in `call'
15         9: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/net-ssh-5.1.0/lib/net/ssh.rb:242:in `start'
16         8: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/net-ssh-5.1.0/lib/net/ssh.rb:242:in `new'
17         7: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/net-ssh-5.1.0/lib/net/ssh/transport/session.rb:73:in `initialize'
18         6: from /Users/odatakashi/.rbenv/versions/2.6.0/lib/ruby/2.6.0/socket.rb:631:in `tcp'
19         5: from /Users/odatakashi/.rbenv/versions/2.6.0/lib/ruby/2.6.0/socket.rb:227:in `foreach'
20         4: from /Users/odatakashi/.rbenv/versions/2.6.0/lib/ruby/2.6.0/socket.rb:227:in `each'
21         3: from /Users/odatakashi/.rbenv/versions/2.6.0/lib/ruby/2.6.0/socket.rb:641:in `block in tcp'
22         2: from /Users/odatakashi/.rbenv/versions/2.6.0/lib/ruby/2.6.0/socket.rb:137:in `connect'
23         1: from /Users/odatakashi/.rbenv/versions/2.6.0/lib/ruby/2.6.0/socket.rb:64:in `connect_internal'
24/Users/odatakashi/.rbenv/versions/2.6.0/lib/ruby/2.6.0/socket.rb:64:in `connect': Operation timed out - connect(2) for 52.199.254.34:22 (Errno::ETIMEDOUT)
25        15: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/runners/parallel.rb:12:in `block (2 levels) in execute'
26        14: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:29:in `run'
27        13: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:29:in `instance_exec'
28        12: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/capistrano-rbenv-2.1.4/lib/capistrano/tasks/rbenv.rake:10:in `block (3 levels) in <top (required)>'
29        11: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:59:in `test'
30        10: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:145:in `create_command_and_execute'
31         9: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:145:in `tap'
32         8: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/abstract.rb:145:in `block in create_command_and_execute'
33         7: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/netssh.rb:129:in `execute_command'
34         6: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/netssh.rb:176:in `with_ssh'
35         5: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/connection_pool.rb:59:in `with'
36         4: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/backends/connection_pool.rb:59:in `call'
37         3: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/net-ssh-5.1.0/lib/net/ssh.rb:242:in `start'
38         2: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/net-ssh-5.1.0/lib/net/ssh.rb:242:in `new'
39         1: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/net-ssh-5.1.0/lib/net/ssh/transport/session.rb:59:in `initialize'
40/Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/net-ssh-5.1.0/lib/net/ssh/transport/session.rb:92:in `rescue in initialize': Net::SSH::ConnectionTimeout (Net::SSH::ConnectionTimeout)
41        1: from /Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/runners/parallel.rb:11:in `block (2 levels) in execute'
42/Users/odatakashi/Web_Apps/donosake/vendor/bundle/ruby/2.6.0/gems/sshkit-1.18.0/lib/sshkit/runners/parallel.rb:15:in `rescue in block (2 levels) in execute': Exception while executing as odatakashi@52.199.254.34: Net::SSH::ConnectionTimeout (SSHKit::Runner::ExecuteError)
43(Backtrace restricted to imported tasks)
44cap aborted!
45SSHKit::Runner::ExecuteError: Exception while executing as odatakashi@52.199.254.34: Net::SSH::ConnectionTimeout
46
47
48Caused by:
49Net::SSH::ConnectionTimeout: Net::SSH::ConnectionTimeout
50
51
52Caused by:
53Errno::ETIMEDOUT: Operation timed out - connect(2) for 52.199.254.34:22
54
55Tasks: TOP => rbenv:validate
56(See full trace by running task with --trace)
57

##関係箇所のコード
[config/deploy.rb]

lock "3.11.0"
set :application, "donosake_app"
set :repo_url, "git@github.com:TakashiOda/donosake_app.git"
set :branch, 'master'
set :deploy_to, "/var/www/"

set :linked_files, fetch(:linked_files, []).push('config/settings.yml')
set :linked_dirs, fetch(:linked_dirs, []).push('log', 'tmp/pids', 'tmp/cache', 'tmp/sockets', 'vendor/bundle', 'public/system')
set :unicorn_pid, "#{shared_path}/tmp/pids/unicorn.pid"
set :keep_releases, 5
set :rbenv_ruby, '2.6.0'
set :log_level, :debug

〜以下省略〜

[config/deploy/production.rb]


server '52.199.254.34', user: 'odatakashi', roles: %w{app db web}

set :ssh_otions, {
    port: 22022,
    keys: '~/.ssh/*******.pem',  #AWS EC2で作成したキーペア
    user: "odatakashi",
    forward_agent: true,
}

〜以下省略〜


# ------------------------------------
# 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"
#   }

試したこと

####その1
ローカル→EC2サーバーへのssh接続は可能。 EC2サーバー→Gitへのssh接続も問題なし。

####その２
$ bundle exec cap production deploy --dry-runを実行するも、問題はありませんでした。

####その3
[config/deploy/production.rb]にssh_options（ポート番号等）の追加

set :ssh_otions, {
    port: 22022,
    keys: '~/.ssh/*******.pem',
    user: "odatakashi",
    forward_agent: true,
}

####その4
[config/deploy.rb]にssh_optionsの追加

set :ssh_options, {
    forward_agent: true,
    user: "odatakashi",
    keys: %w(~/.ssh/******.pem)  #AWS EC2で作成したキーペア
}

英語情報も調べましたが、解決策が見つかりません。お手数ですが、助言をいただけたらと思います。

行動規範の内容に同意します

回答1件

自己解決

自己解決しました。

config/deploy/production.rbの記述を変更。

before
1server '52.199.254.34', user: 'odatakashi', roles: %w{app db web}
2
3set :ssh_otions, {
4    port: 22022,
5    keys: '~/.ssh/********.pem',
6    user: "odatakashi",
7    forward_agent: true,
8}

↓

after
1server '52.199.254.34',
2   user: "odatakashi",
3   roles: %w{web db app},
4   ssh_options: {
5       port: 22022,
6       user: "odatakashi", # overrides user setting above
7       keys: %w(~/.ssh/DonoSake_Key.pem),
8       forward_agent: true
9#     auth_methods: %w(publickey password)
10#     # password: "please use keys"
11   }