質問編集履歴
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コードを追記しました。
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/home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/capistrano-3.11.0/lib/capistrano/setup.rb:27:in `block (3 levels) in <top (required)>'
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/home/vagrant/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/capistrano-3.11.0/lib/capistrano/setup.rb:27:in `block (3 levels) in <top (required)>'
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```
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デプロイは初めてでわからないことだらけですが、宜しくお願いします。
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追記
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サイトでいろいろ調べていたところCapistrano v2 DSLをCapistrano v3と一緒に使用しているために発生しているらしいのですが
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対処方法がわからないので教えてください。
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サイトでは
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```ここに言語を入力
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オプションroles: :appを次のようなブロックに置き換える必要があります。
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task :my_task do
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on roles(:app) do
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...
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end
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end
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```
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とありました。
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参考書のバージョンは2.14.2で自分のバージョンは3.11.0ですのでエラーになってしまったようでした。
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問題の発生コードは以下になります。（参考書のコードをそのまま記述しています。）
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※capistranoでデータベースのバックアップを自動化するコードです。
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```ここに言語を入力
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config/deploy.rb
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namespace :db do
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desc "Dump the database and compress it."
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task :backup, :roles => :db, :only => { :primary => true } do #ここのコードを変更するのだと思います。
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backups_path = "#{shared_path}/db_backups"
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date = capture "cat #{current_path}/config/database.yml"
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config = YAML::load(data)[rails_env]
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abort unless config && config['adapter'] == 'mysql2'
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file_name = "#{config['database']}-#{release_name}.sql.gz"
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command = "/usr/bin/mysqldump --user=#{config['username']}"
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command += " --password" if config['password']
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command += " --host=#{config['host']}" if config['host']
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command += " --port=#{config['port']}" if config['port']
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command += " #{config['database']}"
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command += " | gzip -c > #{backups_path}/#{file_name}"
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run "mkdir -p #{backups_path}"
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run command do |channel, _, output|
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if output =~ /^Enter password:/
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channel.send_data "#{config['password']}n"
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end
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end
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end
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end
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```
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どのように記述するべきなのでしょうか？ご教示お願いします。
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