.unicorn.sock failed (111: Connection refused)

お世話になっております。
下記の問題に知見のある方がいらっしゃいましたらご教示お願いします。

#起きている問題
AWS環境でnginx、rails、mysqlをdockerコンテナで構築し、
docker-compose up実行時、railsコンテナだけが起動しませんでした。

$ docker-compose up
Starting coffee_app_db_1    ... done
Starting coffee_app_nginx_1 ... done
Starting coffee_app_app_1   ... done
Attaching to coffee_app_db_1, coffee_app_nginx_1, coffee_app_app_1
db_1     | 2020-06-03T00:56:22.195265Z 0 [Warning] [MY-010139] [Server] Changed limits: max_open_files: 1024 (requested 8161)
db_1     | 2020-06-03T00:56:22.195272Z 0 [Warning] [MY-010142] 
：
：
db_1     | 2020-06-03T00:56:23.769691Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Socket: '/var/run/mysqld/mysqlx.sock' bind-address: '::' port: 33060
coffee_app_app_1 exited with code 0

ALBのDNS名でアクセス時のnginx.logを確認したところ、.unicorn.sock failed (111: Connection refused) のエラーが発生していました。

$ tail nginx.error.log
2020/06/03 00:46:06 [error] 4077#0: *606 open() "/usr/share/nginx/html/latest/dynamic/instance-identity/document" failed (2: No such file or directory), client: 10.0.0.201, server: _, request: "GET /latest/dynamic/instance-identity/document HTTP/1.1", host: "169.254.169.254"
：
：
2020/06/03 01:01:06 [error] 4077#0: *789 connect() to unix:/var/www/rails/coffee_app/tmp/sockets/.unicorn.sock failed (111: Connection refused) while connecting to upstream, client: 10.0.0.201, server: coffeeapp-elb-16348812.ap-northeast-1.elb.amazonaws.com, request: "GET / HTTP/1.1", upstream: "http://unix:/var/www/rails/coffee_app/tmp/sockets/.unicorn.sock:/", host: "coffeeapp-elb-16348812.ap-northeast-1.elb.amazonaws.com"
2020/06/03 01:24:26 [error] 4077#0: *1071 connect() to unix:/var/www/rails/coffee_app/tmp/sockets/.unicorn.sock failed (111: Connection refused) while connecting to upstream, client: 10.0.0.201, server: coffeeapp-elb-16348812.ap-northeast-1.elb.amazonaws.com, request: "GET / HTTP/1.1", upstream: "http://unix:/var/www/rails/coffee_app/tmp/sockets/.unicorn.sock:/", host: "coffeeapp-elb-16348812.ap-northeast-1.elb.amazonaws.com"

#確認したこと
パーミッションの確認をしましたが、問題ございませんでした。

$ ls -la
drwxrwxrwx  2 root   root    27  6月  3 00:56 sockets
$ ls -la
srwxrwxrwx 1 root root  0  6月  3 00:56 .unicorn.sock

#関連ファイル
coffee_app(アプリ名)/docker/nginx/Dockerfile(nginx)

FROM nginx:1.12.2
RUN apt-get update && \
    apt-get install -y apt-utils \
                       locales && \
    echo "ja_JP.UTF-8 UTF-8" > /etc/locale.gen && \
    locale-gen ja_JP.UTF-8
ENV LC_ALL ja_JP.UTF-8
ADD ./docker/nginx/nginx.conf /etc/nginx/nginx.conf
ADD ./docker/nginx/default.conf /etc/nginx/conf.d/default.conf

coffee_app/docker/nginx/Dockerfile(rails)

FROM ruby:2.5.1
RUN apt-get update -qq && \
    apt-get install -y apt-utils \
                       build-essential \
                       libpq-dev \
                       nodejs \
                       default-mysql-client \
                       yarn
RUN mkdir /coffee_app
WORKDIR /coffee_app
ADD Gemfile /coffee_app/Gemfile
ADD Gemfile.lock /coffee_app/Gemfile.lock
RUN bundle install -j4
ADD . /coffee_app

EXPOSE 3000

coffee_app/docker/nginx/default.conf(nginx設定ファイル)

upstream unicorn {
  server unix:/var/tmp/unicorn.sock;
}

server {
    listen       80;
    server_name  localhost;

    #charset koi8-r;
    #access_log  /var/log/nginx/host.access.log  main;

    location / {
        proxy_pass http://unicorn;
    }

    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

coffee_app/docker/nginx/nginx.conf(nginx設定ファイル)

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
}

etc/nginx/conf.d/coffee_app.conf(nginx設定ファイル)

error_log  /var/www/rails/coffee_app/log/nginx.error.log; 
access_log /var/www/rails/coffee_app/log/nginx.access.log; 

upstream unicorn_server {
    server unix:/var/www/rails/coffee_app/tmp/sockets/.unicorn.sock fail_timeout=0; 
}

server {
    listen 80;
    client_max_body_size 4G;
    server_name 【ELBのDNS名】; 
#    server_name 【アプリのElastic IP】; 
    keepalive_timeout 5;
    root /var/www/rails/coffee_app/public; 

    location ~ ^/assets/ {
        root /var/www/rails/coffee_app/public; 
    }

    location / {
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_redirect off;

        if (!-f $request_filename) {
            proxy_pass http://unicorn_server;
            break;
        }
    }

    error_page 500 502 503 504 /500.html;
    location = /500.html {
        root /var/www/rails/coffee_app/public; 
    }
    location = /favicon.ico {
        log_not_found off;
    }    
}

etc/nginx/nginx.conf（nginx設定ファイル）

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
    worker_connections 1024;
}

http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    server_names_hash_bucket_size 128;
    types_hash_max_size 2048;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    include /etc/nginx/conf.d/*.conf;

    server {
        listen       80 default_server;
        listen       [::]:80 default_server;
        server_name  _;
        root         /usr/share/nginx/html;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
        }

        error_page 404 /404.html;
            location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
            location = /50x.html {
        }
    }
}

coffee_app/docker/nginx/Dockerfile(mysql)

FROM mysql:8.0.17

RUN apt-get update && \
    apt-get install -y apt-utils \
                       locales && \
    rm -rf /var/lib/apt/lists/* && \
    echo "ja_JP.UTF-8 UTF-8" > /etc/locale.gen && \
    locale-gen ja_JP.UTF-8
ENV LC_ALL ja_JP.UTF-8
ADD ./docker/mysql/charset.cnf /etc/mysql/conf.d/charset.cnf

coffee_app/docker-compose.yml

version: '2'
services:
  app:
    build:
      context: .
      dockerfile: ./docker/rails/Dockerfile
    command: bundle exec unicorn_rails -c /coffee_app/config/unicorn.conf.rb -D -E production
  #  command: bundle exec rails s -p 3000 -b '0.0.0.0'
    ports:
      - '3000:3000'
    volumes:
      - /var/tmp
      - .:/coffee_app
    depends_on:
      - db
    extends:
      file: ./docker/mysql/password.yml
      service: password

  db:
    build:
      context: .
      dockerfile: ./docker/mysql/Dockerfile
    ports:
      - '3300:3306'
    volumes:
      - db_data:/var/lib/mysql
    extends:
      file: ./docker/mysql/password.yml
      service: password

  nginx:
    build:
      context: .
      dockerfile: ./docker/nginx/Dockerfile
    ports:
      - '88:80'
    volumes:
      - app

volumes:
  db_data:

coffee_app/config/unicorn.conf.rb

$worker  = 2
$timeout = 30
$app_dir = "/coffee_app"
$listen  = File.expand_path 'tmp/sockets/.unicorn.sock', $app_dir
$pid     = File.expand_path 'tmp/pids/unicorn.pid', $app_dir
$std_log = File.expand_path 'log/unicorn.log', $app_dir
# set config
worker_processes  $worker
working_directory $app_dir
stderr_path $std_log
stdout_path $std_log
timeout $timeout
listen  $listen
pid $pid
# loading booster
preload_app true
# before starting processes
before_fork do |server, worker|
  defined?(ActiveRecord::Base) and ActiveRecord::Base.connection.disconnect!
  old_pid = "#{server.config[:pid]}.oldbin"
  if old_pid != server.pid
    begin
      Process.kill "QUIT", File.read(old_pid).to_i
    rescue Errno::ENOENT, Errno::ESRCH
    end
  end
end
# after finishing processes
after_fork do |server, worker|
  defined?(ActiveRecord::Base) and ActiveRecord::Base.establish_connection
end

行動規範の内容に同意します

回答1件

自己解決

解決しました。

docker_compose.ymlでappコンテナとnginxコンテナの両方からunicorn.sockをみれるようにしたら正常に動くことができました。
確認してくださった皆様、ありがとうございましたm(_ _)m

coffee_app/docker-compose.yml

version: '3'
services:
  app:
    build:
      context: .
      dockerfile: ./docker/rails/Dockerfile
    command: bundle exec unicorn_rails -c /coffee_app/config/unicorn.conf.rb
  # command: bundle exec rails s -p 3000 -b '0.0.0.0'
    ports:
      - '3000:3000'
    volumes:
      - tmp_data:/coffee_app/tmp/sockets
      - .:/coffee_app
    depends_on:
      - db
  db:
    build:
      context: .
      dockerfile: ./docker/mysql/Dockerfile
    command: --default-authentication-plugin=mysql_native_password
    ports:
      - '3306:3306'
    volumes:
      - db_data:/var/lib/mysql
  nginx:
    build:
      context: .
      dockerfile: ./docker/nginx/Dockerfile
    ports:
      - '80:80'
    volumes:
      - tmp_data:/var/tmp/
volumes:
  db_data:
  tmp_data:

投稿2020/06/05 01:33

ryouya

総合スコア14