部署出現❌：
terminal輸入:
ssh root@xx.xx.xx.xx進入root目錄
root@iZ8vb9z1vsb31g6zoqqt0bZ:~# pwd
/root
但這“/”才是真正的根目錄。
如/var/log/nginx/error.log這是告訴我var目錄是在“／”目錄下的.
所以：
root@iZ8vb9z1vsb31g6zoqqt0bZ:~# cd / root@iZ8vb9z1vsb31g6zoqqt0bZ:/# ls bin etc initrd.img.old lost+found opt run sys var boot home lib media proc sbin tmp vmlinuz dev initrd.img lib64 mnt root srv usr vmlinuz.old
忘記配置：
執行 cap install，這會新增一些配置檔案。
編輯 Capfile：
Capfile
require "capistrano/scm/git"
install_plugin Capistrano::SCM::Git
+ require 'capistrano/rails'
+ require 'capistrano/passenger'
再試出現新的❌！
Gem::Ext::BuildError: ERROR: Failed to build gem native extension. 。。。略。。 An error occurred while installing sassc (1.12.1), and Bundler cannot continue. Make sure that `gem install sassc -v '1.12.1' --source 'https://gems.ruby-china.com/'` succeeds before bundling. In Gemfile: font-awesome-sass was resolved to 5.2.0, which depends on sassc bundle stderr: Nothing written ** DEPLOY FAILED ** Refer to log/capistrano.log for details. Here are the last 20 lines: `block (2 levels) in <top (required)>' /home/deploy/Trello/shared/bundle/ruby/2.5.0/gems/rake-12.3.1/exe/rake:27:in `<main>' Tasks: TOP => lib/libsass.so (See full trace by running task with --trace) rake failed, exit code 1 Gem files will remain installed in /home/deploy/Trello/shared/bundle/ruby/2.5.0/gems/sassc-1.12.1 for inspection. Results logged to /home/deploy/Trello/shared/bundle/ruby/2.5.0/extensions/x86_64-linux/2.5.0/sassc-1.12.1/gem_make.out An error occurred while installing sassc (1.12.1), and Bundler cannot continue. Make sure that `gem install sassc -v '1.12.1' --source 'https://gems.ruby-china.com/'` succeeds before bundling. In Gemfile: font-awesome-sass was resolved to 5.2.0, which depends on sassc
無法確認問題的出處，准備重裝。
避開程序，
- 換一個簡單的程序。
拖拉的網頁：先使用Heroku試一下。是否正常上線
新問題：
輸入：cap production deploy
00:16 deploy:assets:precompile 01 bundle exec rake assets:precompile 01 Yarn executable was not detected in the system. 01 Download Yarn at https://yarnpkg.com/en/docs/install 01 I, [2018-10-29T19:59:49.506978 #22896] INFO -- : Writing /home/deploy/vue-todolist/release… 01 I, [2018-10-29T19:59:49.507644 #22896] INFO -- : Writing /home/deploy/vue-todolist/release… 01 I, [2018-10-29T19:59:49.539748 #22896] INFO -- : Writing /home/deploy/vue-todolist/release… 01 I, [2018-10-29T19:59:49.540210 #22896] INFO -- : Writing /home/deploy/vue-todolist/release… 01 sh: 1: 01 node: not found 01 01 Webpacker requires Node.js >= 6.0.0 and you are using 4.2.6 01 Please upgrade Node.js https://nodejs.org/en/download/
我的app,安裝了yarn, 但是服務器沒有安裝yarn;
sudo apt-get update && sudo apt-get install yarn
參考：
https://github.com/yarnpkg/yarn/issues/2821
安裝nodejs
官網 ，選擇Ubuntu連接進入git
Node.js v10.x: # Using Ubuntu curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash - sudo apt-get install -y nodejs
參考：
https://blog.csdn.net/well2049/article/details/79138045
上一個問題通過：又遇到新的問題：
00:12 deploy:assets:precompile 01 bundle exec rake assets:precompile 01 yarn install v1.10.1 01 [1/4] Resolving packages... 01 [2/4] Fetching packages... 01 info fsevents@1.2.4: The platform "linux" is incompatible with this module. 01 info "fsevents@1.2.4" is an optional dependency and failed compatibility check. Excluding i… 01 [3/4] Linking dependencies... 01 warning "@rails/webpacker > postcss-cssnext@3.1.0" has unmet peer dependency "caniuse-lite@… 01 warning " > vue-loader@14.2.2" has unmet peer dependency "css-loader@*". 01 warning " > webpack-dev-server@2.11.2" has unmet peer dependency "webpack@^2.2.0 || ^3.0.0". 01 warning "webpack-dev-server > webpack-dev-middleware@1.12.2" has unmet peer dependency "web… 01 [4/4] Building fresh packages... 01 success Saved lockfile. 01 Done in 161.28s. 01 Webpacker is installed 🎉 🍰 01 Using /home/deploy/vue-todolist/releases/20181029131732/config/webpacker.yml file for setti… 01 Compiling… 01 Compiled all packs in /home/deploy/vue-todolist/releases/20181029131732/public/packs ✔ 01 deploy@47.92.202.0 186.048s 03:18 deploy:assets:backup_manifest 01 mkdir -p /home/deploy/vue-todolist/releases/20181029131732/assets_manifest_backup ✔ 01 deploy@47.92.202.0 0.093s 02 cp /home/deploy/vue-todolist/releases/20181029131732/public/assets/.sprockets-manifest-dd3a… ✔ 02 deploy@47.92.202.0 0.097s 03:18 deploy:migrate [deploy:migrate] Run `rake db:migrate` 03:19 deploy:migrating 01 bundle exec rake db:migrate 01 rake aborted! 01 ActiveRecord::NoDatabaseError: FATAL: database "rails_recipes" does not exist 01 /home/deploy/vue-todolist/shared/bundle/ruby/2.5.0/gems/activerecord-5.2.1/lib/active_recor… 01 /home/deploy/vue-todolist/shared/bundle/ruby/2
發現錯誤❌！！，沒改！！
production: adapter: postgresql pool: 25 database: rails_recipes host: localhost username: postgres password: xxxxxxxxxx
數據庫操作。
https://itbilu.com/database/postgre/410auo8xZ.html
新問題：
執行 sudo service nginx restart
Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.
server { listen 80; server_name 47.92.82.116; # 用你自己的服務器 IP 位置 root /home/deploy/rails-recipes/current/public; # 用你自己的項目名稱位置 passenger_enabled on; passenger_min_instances 1; location ~ ^/assets/ { expires 1y; add_header Cache-Control public; add_header ETag ""; break; } :} #多輸入了一個冒號！
最后成功部署，不過又有新的問題！
顯示<body></body> 內是空的！！！
也就是說vue.js沒有部署到位！
這是因為vue.js的單頁面應用需要部署。
一上午瀏覽網上，能夠教vue.js部署的帖子。並沒有現成的解決方案！
第一，部署方面的了解。幾乎都不了解。所以網上的一些相關知識點，比較懵圈。
第二，關於vue-cli有部署的實例，但我沒有學習vue-cli。和我目前要解決的問題，也不相關。
想法：
學習部署已經2天了，遇到不少坑，也掙扎爬出來。到vue方面的部署，我暫時不能解決。
所以，暫時停下來，先看一些其他相關知識點。
- 了解一下webpack。
- GoRails有教用Heroku的視頻看一下。
- Linux基本運維知識，學習一下。
- 目前最重要的事情是什么應該這2天趕緊了！
使用passwd命令修改密碼
參考man passwd
在root下輸入：passwd xxx, 就可以修改xxx的密碼了！
01:54 deploy:assets:precompile 01 bundle exec rake assets:precompile 01 yarn install v1.12.1 01 [1/4] Resolving packages... 01 [2/4] Fetching packages... 01 info fsevents@1.2.4: The platform "linux" is incompatible with this module. 01 info "fsevents@1.2.4" is an optional dependency and failed compatibility check. Ex… 01 [3/4] Linking dependencies... 01 warning "@rails/webpacker > postcss-cssnext@3.1.0" has unmet peer dependency "cani… 01 warning " > vue-loader@14.2.2" has unmet peer dependency "css-loader@*". 01 warning " > webpack-dev-server@2.11.2" has unmet peer dependency "webpack@^2.2.0 |… 01 warning "webpack-dev-server > webpack-dev-middleware@1.12.2" has unmet peer depend… 01 [4/4] Building fresh packages...
網上的找的一個方法，沒有成功仍然會報告❌。
網上找到一篇 Nginx 教程 （中英）
https://www.oschina.net/translate/nginx-tutorial-basics-concepts?cmp
嘗試使用其他方式部署，嘗試一下。還是找不到解決辦法，暫時擱置！
嘗試action cable的部署：
輸入cap production deploy，走到 bundler:install時，❌：
在bunder之前先安裝gem install sassc -v '1.12.1 ？
An error occurred while installing sassc (1.12.1), and Bundler cannot continue.
Make sure that `gem install sassc -v '1.12.1' --source
'https://gems.ruby-china.com/'` succeeds before bundling.
gem 'font-awesome-sass' 有問題，移除它並去掉asset中的require ..后，運行cap production deploy即可成功。