Railsのサーバー起動周りでエラーが出たので、解決策をメモ。
- CentOS7
- Rails 5.2.2
エラー1 : rails serverが立ち上がらない
[root@c7836a29680b railsproject]# rails server
Traceback (most recent call last):
61: from bin/rails:3:in `<main>'
60: from bin/rails:3:in `load'
59: from /railsproject/bin/spring:15:in `<top (required)>'
58: from /root/.rbenv/versions/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in `require'
57: from /root/.rbenv/versions/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in `require'
56: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
55: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
54: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
53: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
52: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
51: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
50: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
49: from /railsproject/bin/rails:9:in `<top (required)>'
48: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
47: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
46: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
45: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
44: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
43: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
42: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
41: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
40: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-5.2.2/lib/rails/commands.rb:18:in `<main>'
39: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-5.2.2/lib/rails/command.rb:46:in `invoke'
38: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-5.2.2/lib/rails/command/base.rb:65:in `perform'
37: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/thor-0.20.3/lib/thor.rb:387:in `dispatch'
36: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/thor-0.20.3/lib/thor/invocation.rb:126:in `invoke_command'
35: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/thor-0.20.3/lib/thor/command.rb:27:in `run'
34: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-5.2.2/lib/rails/commands/server/server_command.rb:142:in `perform'
33: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-5.2.2/lib/rails/commands/server/server_command.rb:142:in `tap'
32: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/railties-5.2.2/lib/rails/commands/server/server_command.rb:145:in `block in perform'
31: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
30: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
29: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
28: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
27: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
26: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
25: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
24: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
23: from /railsproject/config/application.rb:7:in `<main>'
22: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler.rb:114:in `require'
21: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:65:in `require'
20: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:65:in `each'
19: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:76:in `block in require'
18: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:76:in `each'
17: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-2.0.1/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
16: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
15: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
14: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
13: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
12: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
11: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/uglifier-4.1.20/lib/uglifier.rb:5:in `<main>'
10: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
9: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
8: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
7: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
6: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
5: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
4: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
3: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
2: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs.rb:4:in `<main>'
1: from /root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>'
/root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:58:in `autodetect': Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
ググってみたが、nodejs入れるといいと言われる。確認してみたが入っている。
[root@c7836a29680b railsproject]# yum install nodejs
Loaded plugins: fastestmirror, ovl
Loading mirror speeds from cached hostfile
* base: ftp-srv2.kddilabs.jp
* extras: ftp-srv2.kddilabs.jp
* updates: ftp-srv2.kddilabs.jp
No package nodejs available.
解決方法:therubyracerをGemfileに入れる
Gemfileに追記して、
# echo "gem 'therubyracer'" >> Gemfile
bundle installを実行する。
エラー2:therubyracerのインストールに失敗する
Fetching therubyracer 0.12.3
Installing therubyracer 0.12.3 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory:
/root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/therubyracer-0.12.3/ext/v8
/root/.rbenv/versions/2.5.0/bin/ruby -r ./siteconf20190219-1132-hg4o9e.rb
extconf.rb
checking for -lpthread... yes
creating Makefile
current directory:
/root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/therubyracer-0.12.3/ext/v8
make "DESTDIR=" clean
current directory:
/root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/therubyracer-0.12.3/ext/v8
make "DESTDIR="
compiling accessor.cc
make: g++: Command not found
make: *** [accessor.o] Error 127
make failed, exit code 2
Gem files will remain installed in
/root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/therubyracer-0.12.3 for
inspection.
Results logged to
/root/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/therubyracer-0.12.3/gem_make.out
An error occurred while installing therubyracer (0.12.3), and Bundler
cannot continue.
Make sure that `gem install therubyracer -v '0.12.3' --source
'https://rubygems.org/'` succeeds before bundling.
In Gemfile:
therubyracer
解決方法:gcc-c++をインストールする
# yum install gcc-c++
そしてbundle update
# bundle update
解決！
[root@c7836a29680b railsproject]# rails server
=> Booting Puma
=> Rails 5.2.2 application starting in development
=> Run `rails server -h` for more startup options
Puma starting in single mode...
* Version 3.12.0 (ruby 2.5.0-p0), codename: Llamas in Pajamas
* Min threads: 5, max threads: 5
* Environment: development
* Listening on tcp://0.0.0.0:3000
Use Ctrl-C to stop
^C- Gracefully stopping, waiting for requests to finish
=== puma shutdown: 2019-02-19 03:34:47 +0000 ===
- Goodbye!
Exiting