質問編集履歴
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Rails on Docker
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Rails on Dockerを Heroku へデプロイ時に db:create が通らない
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現在docker-composeを用いてRailsアプリケーションを開発しており,
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本番環境へのリリースとしてHerokuへのデプロイを行っている途中でエラーが発生している状態です.
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## やったこと
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[こちらのQiita記事](https://qiita.com/take18k_tech/items/25a1147c481a37b423fc)や[herokuのdocs](https://devcenter.heroku.com/articles/cleardb#configuring-your-ruby-application-to-use-cleardb)を参照しながら以下のコマンドを実行していきました.
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ここまでは何のエラーもなく通っています.
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(herokuへログイン済み)
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```bash
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$ heroku container:push web
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$ heroku container:release web
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$ heroku addons:create cleardb:ignite
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$ heroku config
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=== myapp Config Vars
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CLEARDB_DATABASE_URL: mysql://xxx
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$ heroku config:set DATABASE_URL='mysql2://xxx'
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Setting DATABASE_URL and restarting ⬢ myapp... done, v21
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DATABASE_URL: mysql2://xxx
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$ heroku config:set RAILS_ENV='production'
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Setting RAILS_ENV and restarting ⬢ myapp... done, v22
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RAILS_ENV: production
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```
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## 発生している問題
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以上のコマンドに引き続き`db:create`を実行した際に以下のエラーが発生しています.
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```
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$ heroku run rails db:create
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Running rails db:create on ⬢ myapp... up, run.9235 (Free)
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rails aborted!
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NameError: Cannot load database configuration:
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undefined local variable or method `root' for main:Object
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(erb):19:in `block in <main>'
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(erb):19:in `fetch'
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(erb):19:in `<main>'
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/application/configuration.rb:172:in `database_configuration'
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/usr/local/bundle/gems/activerecord-5.2.4.1/lib/active_record/railtie.rb:39:in `block (3 levels) in <class:Railtie>'
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/commands/rake/rake_command.rb:23:in `block in perform'
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/commands/rake/rake_command.rb:20:in `perform'
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/command.rb:48:in `invoke'
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/commands.rb:18:in `<main>'
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
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/usr/local/bundle/gems/activesupport-5.2.4.1/lib/active_support/dependencies.rb:291:in `block in require'
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/usr/local/bundle/gems/activesupport-5.2.4.1/lib/active_support/dependencies.rb:257:in `load_dependency'
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/usr/local/bundle/gems/activesupport-5.2.4.1/lib/active_support/dependencies.rb:291:in `require'
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/katagami-ant/bin/rails:9:in `<top (required)>'
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load'
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call'
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call'
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/client.rb:30:in `run'
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/usr/local/bundle/gems/spring-2.1.0/bin/spring:49:in `<top (required)>'
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load'
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<top (required)>'
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/katagami-ant/bin/spring:15:in `<top (required)>'
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bin/rails:3:in `load'
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bin/rails:3:in `<main>'
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```
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129
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## 考えうる原因
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```
|
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134
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|
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135
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/application/configuration.rb:172:in `database_configuration'
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|
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137
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```
|
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138
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+
|
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139
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+
エラーが発生したコードは以上の部分ということだったので, `database_configuration`について[調べてみると](https://www.rubydoc.info/docs/rails/4.1.7/Rails%2FApplication%2FConfiguration:database_configuration)
|
|
140
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|
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141
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> Loads and returns the entire raw configuration of database from values stored in `config/database.yml`.
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142
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+
|
|
143
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+
|
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144
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145
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+
ということで, どうも`config/database.yml`が怪しいと分かりました.
|
|
146
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+
|
|
147
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+
`heroku config`で設定した環境変数が読み込まれているかを確認するために,
|
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148
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+
|
|
149
|
+
`initializers/`の適当なファイルに以下を置いてみましたが問題ないようでした.
|
|
150
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+
|
|
151
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+
|
|
152
|
+
|
|
153
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+
```ruby
|
|
154
|
+
|
|
155
|
+
p ENV['DATABASE_URL']
|
|
156
|
+
|
|
157
|
+
p ENV['RAILS_ENV']
|
|
158
|
+
|
|
159
|
+
```
|
|
160
|
+
|
|
161
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+
|
|
162
|
+
|
|
163
|
+
```bash
|
|
164
|
+
|
|
165
|
+
$ heroku run rails db:create
|
|
166
|
+
|
|
167
|
+
Running rails db:create on ⬢ myapp... up, run.2733 (Free)
|
|
168
|
+
|
|
169
|
+
"mysql2://xxx"
|
|
170
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+
|
|
171
|
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"production"
|
|
172
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+
|
|
173
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+
rails aborted!
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174
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+
|
|
175
|
+
NameError: Cannot load database configuration:
|
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176
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+
|
|
177
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+
undefined local variable or method `root' for main:Object
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178
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|
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179
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...
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180
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181
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+
```
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184
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185
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186
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187
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## 関連のあるコード
|
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188
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+
|
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189
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+
|
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190
|
+
|
|
191
|
+
- docker-compose.yml
|
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192
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+
|
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193
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+
|
|
194
|
+
|
|
195
|
+
```yml
|
|
196
|
+
|
|
197
|
+
version: "3"
|
|
198
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+
|
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199
|
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services:
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200
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|
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201
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web:
|
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202
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|
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203
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build: .
|
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204
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|
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205
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command: /bin/sh -c "rm -f /myapp/tmp/pids/server.pid && bundle exec rails s -p '3001' -b '0.0.0.0'"
|
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206
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|
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207
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tty: true
|
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208
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|
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209
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stdin_open: true
|
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210
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|
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211
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# environment:
|
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212
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+
|
|
213
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+
# - DATABASE=myapp_development
|
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214
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|
|
215
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+
# - DATABASE_USER=root
|
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216
|
+
|
|
217
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+
# - DATABASE_PASSWORD=password
|
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218
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+
|
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219
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# - DATABASE_HOST=db
|
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220
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|
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221
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volumes:
|
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222
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+
|
|
223
|
+
- .:/katagami-ant
|
|
224
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+
|
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225
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+
ports:
|
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226
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+
|
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227
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- 3001:3001
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228
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229
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depends_on:
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230
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+
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231
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+
- db
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232
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233
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- redis
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234
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235
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+
|
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236
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|
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237
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db:
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238
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239
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image: mysql:5.7
|
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240
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+
|
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241
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+
command: mysqld --character-set-server=utf8 --collation-server=utf8_unicode_ci
|
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242
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+
|
|
243
|
+
environment:
|
|
244
|
+
|
|
245
|
+
- MYSQL_DATABASE=myapp_development
|
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246
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+
|
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247
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+
- MYSQL_ROOT_USER=root
|
|
248
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+
|
|
249
|
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- MYSQL_ROOT_PASSWORD=password
|
|
250
|
+
|
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251
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+
volumes:
|
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252
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+
|
|
253
|
+
- mysql_vol:/var/lib/mysql
|
|
254
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+
|
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255
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ports:
|
|
256
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+
|
|
257
|
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- 3306:3306
|
|
258
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+
|
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259
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|
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260
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+
|
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261
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redis:
|
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262
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|
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263
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+
image: redis
|
|
264
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+
|
|
265
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ports:
|
|
266
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+
|
|
267
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+
- 6379:6379
|
|
268
|
+
|
|
269
|
+
volumes:
|
|
270
|
+
|
|
271
|
+
- "./app/redis:/data"
|
|
272
|
+
|
|
273
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+
|
|
274
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+
|
|
275
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+
volumes:
|
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276
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+
|
|
277
|
+
mysql_vol:
|
|
278
|
+
|
|
279
|
+
```
|
|
280
|
+
|
|
281
|
+
- config/database.yml
|
|
282
|
+
|
|
283
|
+
```yml
|
|
284
|
+
|
|
285
|
+
default: &default
|
|
286
|
+
|
|
287
|
+
adapter: mysql2
|
|
288
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+
|
|
289
|
+
encoding: utf8
|
|
290
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+
|
|
291
|
+
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
|
|
292
|
+
|
|
293
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+
|
|
294
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+
|
|
295
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development:
|
|
296
|
+
|
|
297
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+
<<: *default
|
|
298
|
+
|
|
299
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+
# username: <%= ENV.fetch("DATABASE_USER") { root } %>
|
|
300
|
+
|
|
301
|
+
# password: <%= ENV.fetch("DATABASE_PASSWORD") { password } %>
|
|
302
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+
|
|
303
|
+
# host: <%= ENV.fetch("DATABASE_HOST") { db } %>
|
|
304
|
+
|
|
305
|
+
# database: <%= ENV.fetch("DATABASE") { katagami-ant_development } %>
|
|
306
|
+
|
|
307
|
+
|
|
308
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+
|
|
309
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+
production:
|
|
310
|
+
|
|
311
|
+
<<: *default
|
|
312
|
+
|
|
313
|
+
url: <%= ENV['DATABASE_URL'] %>
|
|
314
|
+
|
|
315
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+
|
|
316
|
+
|
|
317
|
+
```
|
|
318
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+
|
|
319
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+
|
|
320
|
+
|
|
1
321
|
## 実現したいこと
|
|
2
322
|
|
|
3
|
-
|
|
4
|
-
|
|
5
|
-
現在docker-composeを用いてRailsアプリケーションを開発しており,
|
|
6
|
-
|
|
7
|
-
本番環境へのリリースとしてHerokuへのデプロイを行っている途中でエラーが発生している状態です.
|
|
8
|
-
|
|
9
|
-
|
|
10
|
-
|
|
11
|
-
## やったこと
|
|
12
|
-
|
|
13
|
-
[こちらのQiita記事](https://qiita.com/take18k_tech/items/25a1147c481a37b423fc)や[herokuのdocs](https://devcenter.heroku.com/articles/cleardb#configuring-your-ruby-application-to-use-cleardb)を参照しながら以下のコマンドを実行していきました.
|
|
14
|
-
|
|
15
|
-
ここまでは何のエラーもなく通っています.
|
|
16
|
-
|
|
17
|
-
(herokuへログイン済み)
|
|
18
|
-
|
|
19
|
-
```bash
|
|
20
|
-
|
|
21
|
-
$ heroku container:push web
|
|
22
|
-
|
|
23
|
-
|
|
24
|
-
|
|
25
|
-
$ heroku container:release web
|
|
26
|
-
|
|
27
|
-
|
|
28
|
-
|
|
29
|
-
$ heroku addons:create cleardb:ignite
|
|
30
|
-
|
|
31
|
-
|
|
32
|
-
|
|
33
|
-
$ heroku config
|
|
34
|
-
|
|
35
|
-
=== myapp Config Vars
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CLEARDB_DATABASE_URL: mysql://xxx
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$ heroku config:set DATABASE_URL='mysql2://xxx'
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Setting DATABASE_URL and restarting ⬢ myapp... done, v21
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DATABASE_URL: mysql2://xxx
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$ heroku config:set RAILS_ENV='production'
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Setting RAILS_ENV and restarting ⬢ myapp... done, v22
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RAILS_ENV: production
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```
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## 発生している問題
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以上のコマンドに引き続き`db:create`を実行した際に以下のエラーが発生しています.
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63
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```
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$ heroku run rails db:create
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Running rails db:create on ⬢ myapp... up, run.9235 (Free)
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rails aborted!
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NameError: Cannot load database configuration:
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undefined local variable or method `root' for main:Object
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(erb):19:in `block in <main>'
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(erb):19:in `fetch'
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(erb):19:in `<main>'
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80
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/application/configuration.rb:172:in `database_configuration'
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82
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83
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/usr/local/bundle/gems/activerecord-5.2.4.1/lib/active_record/railtie.rb:39:in `block (3 levels) in <class:Railtie>'
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84
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-
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85
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/commands/rake/rake_command.rb:23:in `block in perform'
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86
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87
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/commands/rake/rake_command.rb:20:in `perform'
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88
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89
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/command.rb:48:in `invoke'
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90
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-
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91
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/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/commands.rb:18:in `<main>'
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92
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93
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
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94
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-
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95
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
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96
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-
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97
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
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98
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-
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99
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
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100
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-
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101
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/usr/local/bundle/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
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102
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/usr/local/bundle/gems/activesupport-5.2.4.1/lib/active_support/dependencies.rb:291:in `block in require'
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104
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105
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/usr/local/bundle/gems/activesupport-5.2.4.1/lib/active_support/dependencies.rb:257:in `load_dependency'
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106
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107
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/usr/local/bundle/gems/activesupport-5.2.4.1/lib/active_support/dependencies.rb:291:in `require'
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108
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109
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/katagami-ant/bin/rails:9:in `<top (required)>'
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110
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111
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load'
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112
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113
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call'
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114
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-
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115
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call'
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|
116
|
-
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117
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/usr/local/bundle/gems/spring-2.1.0/lib/spring/client.rb:30:in `run'
|
|
118
|
-
|
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119
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/usr/local/bundle/gems/spring-2.1.0/bin/spring:49:in `<top (required)>'
|
|
120
|
-
|
|
121
|
-
/usr/local/bundle/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load'
|
|
122
|
-
|
|
123
|
-
/usr/local/bundle/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<top (required)>'
|
|
124
|
-
|
|
125
|
-
/katagami-ant/bin/spring:15:in `<top (required)>'
|
|
126
|
-
|
|
127
|
-
bin/rails:3:in `load'
|
|
128
|
-
|
|
129
|
-
bin/rails:3:in `<main>'
|
|
130
|
-
|
|
131
|
-
```
|
|
132
|
-
|
|
133
|
-
|
|
134
|
-
|
|
135
|
-
## 考えうる原因
|
|
136
|
-
|
|
137
|
-
```
|
|
138
|
-
|
|
139
|
-
/usr/local/bundle/gems/railties-5.2.4.1/lib/rails/application/configuration.rb:172:in `database_configuration'
|
|
140
|
-
|
|
141
|
-
```
|
|
142
|
-
|
|
143
|
-
エラーが発生したコードは以上の部分ということだったので, `database_configuration`について[調べてみると](https://www.rubydoc.info/docs/rails/4.1.7/Rails%2FApplication%2FConfiguration:database_configuration)
|
|
144
|
-
|
|
145
|
-
> Loads and returns the entire raw configuration of database from values stored in `config/database.yml`.
|
|
146
|
-
|
|
147
|
-
|
|
148
|
-
|
|
149
|
-
ということで, どうも`config/database.yml`が怪しいと分かりました.
|
|
150
|
-
|
|
151
|
-
`heroku config`で設定した環境変数が読み込まれているかを確認するために,
|
|
152
|
-
|
|
153
|
-
`initializers/`の適当なファイルに以下を置いてみましたが問題ないようでした.
|
|
154
|
-
|
|
155
|
-
|
|
156
|
-
|
|
157
|
-
```ruby
|
|
158
|
-
|
|
159
|
-
p ENV['DATABASE_URL']
|
|
160
|
-
|
|
161
|
-
p ENV['RAILS_ENV']
|
|
162
|
-
|
|
163
|
-
```
|
|
164
|
-
|
|
165
|
-
|
|
166
|
-
|
|
167
|
-
```bash
|
|
168
|
-
|
|
169
|
-
$ heroku run rails db:create
|
|
170
|
-
|
|
171
|
-
Running rails db:create on ⬢ myapp... up, run.2733 (Free)
|
|
172
|
-
|
|
173
|
-
"mysql2://xxx"
|
|
174
|
-
|
|
175
|
-
"production"
|
|
176
|
-
|
|
177
|
-
rails aborted!
|
|
178
|
-
|
|
179
|
-
NameError: Cannot load database configuration:
|
|
180
|
-
|
|
181
|
-
undefined local variable or method `root' for main:Object
|
|
182
|
-
|
|
183
|
-
...
|
|
184
|
-
|
|
185
|
-
```
|
|
186
|
-
|
|
187
|
-
|
|
188
|
-
|
|
189
|
-
|
|
190
|
-
|
|
191
|
-
## 関連のあるコード
|
|
192
|
-
|
|
193
|
-
|
|
194
|
-
|
|
195
|
-
- docker-compose.yml
|
|
196
|
-
|
|
197
|
-
|
|
198
|
-
|
|
199
|
-
```yml
|
|
200
|
-
|
|
201
|
-
version: "3"
|
|
202
|
-
|
|
203
|
-
services:
|
|
204
|
-
|
|
205
|
-
web:
|
|
206
|
-
|
|
207
|
-
build: .
|
|
208
|
-
|
|
209
|
-
command: /bin/sh -c "rm -f /myapp/tmp/pids/server.pid && bundle exec rails s -p '3001' -b '0.0.0.0'"
|
|
210
|
-
|
|
211
|
-
tty: true
|
|
212
|
-
|
|
213
|
-
stdin_open: true
|
|
214
|
-
|
|
215
|
-
# environment:
|
|
216
|
-
|
|
217
|
-
# - DATABASE=myapp_development
|
|
218
|
-
|
|
219
|
-
# - DATABASE_USER=root
|
|
220
|
-
|
|
221
|
-
# - DATABASE_PASSWORD=password
|
|
222
|
-
|
|
223
|
-
# - DATABASE_HOST=db
|
|
224
|
-
|
|
225
|
-
volumes:
|
|
226
|
-
|
|
227
|
-
- .:/katagami-ant
|
|
228
|
-
|
|
229
|
-
ports:
|
|
230
|
-
|
|
231
|
-
- 3001:3001
|
|
232
|
-
|
|
233
|
-
depends_on:
|
|
234
|
-
|
|
235
|
-
- db
|
|
236
|
-
|
|
237
|
-
- redis
|
|
238
|
-
|
|
239
|
-
|
|
240
|
-
|
|
241
|
-
db:
|
|
242
|
-
|
|
243
|
-
image: mysql:5.7
|
|
244
|
-
|
|
245
|
-
command: mysqld --character-set-server=utf8 --collation-server=utf8_unicode_ci
|
|
246
|
-
|
|
247
|
-
environment:
|
|
248
|
-
|
|
249
|
-
- MYSQL_DATABASE=myapp_development
|
|
250
|
-
|
|
251
|
-
- MYSQL_ROOT_USER=root
|
|
252
|
-
|
|
253
|
-
- MYSQL_ROOT_PASSWORD=password
|
|
254
|
-
|
|
255
|
-
volumes:
|
|
256
|
-
|
|
257
|
-
- mysql_vol:/var/lib/mysql
|
|
258
|
-
|
|
259
|
-
ports:
|
|
260
|
-
|
|
261
|
-
- 3306:3306
|
|
262
|
-
|
|
263
|
-
|
|
264
|
-
|
|
265
|
-
redis:
|
|
266
|
-
|
|
267
|
-
image: redis
|
|
268
|
-
|
|
269
|
-
ports:
|
|
270
|
-
|
|
271
|
-
- 6379:6379
|
|
272
|
-
|
|
273
|
-
volumes:
|
|
274
|
-
|
|
275
|
-
- "./app/redis:/data"
|
|
276
|
-
|
|
277
|
-
|
|
278
|
-
|
|
279
|
-
volumes:
|
|
280
|
-
|
|
281
|
-
mysql_vol:
|
|
282
|
-
|
|
283
|
-
```
|
|
284
|
-
|
|
285
|
-
- config/database.yml
|
|
286
|
-
|
|
287
|
-
```yml
|
|
288
|
-
|
|
289
|
-
default: &default
|
|
290
|
-
|
|
291
|
-
adapter: mysql2
|
|
292
|
-
|
|
293
|
-
encoding: utf8
|
|
294
|
-
|
|
295
|
-
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
|
|
296
|
-
|
|
297
|
-
|
|
298
|
-
|
|
299
|
-
development:
|
|
300
|
-
|
|
301
|
-
<<: *default
|
|
302
|
-
|
|
303
|
-
# username: <%= ENV.fetch("DATABASE_USER") { root } %>
|
|
304
|
-
|
|
305
|
-
# password: <%= ENV.fetch("DATABASE_PASSWORD") { password } %>
|
|
306
|
-
|
|
307
|
-
# host: <%= ENV.fetch("DATABASE_HOST") { db } %>
|
|
308
|
-
|
|
309
|
-
# database: <%= ENV.fetch("DATABASE") { katagami-ant_development } %>
|
|
310
|
-
|
|
311
|
-
|
|
312
|
-
|
|
313
|
-
production:
|
|
314
|
-
|
|
315
|
-
<<: *default
|
|
316
|
-
|
|
317
|
-
url: <%= ENV['DATABASE_URL'] %>
|
|
318
|
-
|
|
319
|
-
|
|
320
|
-
|
|
321
|
-
```
|
|
322
|
-
|
|
323
|
-
|
|
324
|
-
|
|
325
|
-
## 実現したいこと
|
|
326
|
-
|
|
327
323
|
`heroku run db:create`を実行したい.
|
|
328
324
|
|
|
329
325
|
|