安装 docker mastodon 时 postgres 不会启动

Question

我正在尝试安装 mastodon 的 docker 化版本，尽管我已经参考了几个指南（包括官方文档），但我在连接到 postgres 数据库时一直遇到错误。

这里是我的相关部分 docker-compose.yml:

  db:                                                                                                                                                
     restart: always                                                                                                                                  
     image: postgres:9.6-alpine                                                                                                                       
     shm_size: 256mb                                                                                                                                  
     networks:                                                                                                                                        
       - internal_network                                                                                                                             
     healthcheck:                                                                                                                                     
       test: ["CMD", "pg_isready", "-U", "postgres"]                                                                                                  
     volumes:                                                                                                                                         
       - ./postgres:/var/lib/postgresql/data

...还有我的 .env.production:

# PostgreSQL                                                                                                                                         
 # ----------                                                                                                                                         
 DB_HOST=/var/run/postgresql                                                                                                                          
 DB_USER=mastodon                                                                                                                                     
 DB_NAME=mastodon_production                                                                                                                          
 DB_PASS=[MY PASSWORD]   <--- (I've also tried leaving this blank with no difference in the result)                                                                                                                           
 DB_PORT=5432

但是当我运行（例如）： $ docker-compose run --rm web rails db:migrate

我得到以下输出：

    rails aborted!
    PG::ConnectionBad: could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

和 $ docker logs mastodon_db_1 给我：

Error: Database is uninitialized and superuser password is not specified.
       You must specify POSTGRES_PASSWORD to a non-empty value for the
       superuser. For example, "-e POSTGRES_PASSWORD=password" on "docker run".

       You may also use "POSTGRES_HOST_AUTH_METHOD=trust" to allow all
       connections without a password. This is *not* recommended.

       See PostgreSQL documentation about "trust":
       https://www.postgresql.org/docs/current/auth-trust.html

我对 docker 比较陌生，但（我认为）我了解基本概念。但是，很多的谷歌搜索让我认为我是唯一遇到此问题的人而且我看不到我错过了什么。

Answer 1

第二个错误是因为缺少 Postgres 容器所需的 ENV。

Error: Database is uninitialized and superuser password is not specified.
       You must specify POSTGRES_PASSWORD to a non-empty value for the
       superuser

POSTGRES_PASSWORD

This environment variable is required for you to use the PostgreSQL image. It must not be empty or undefined. This environment variable sets the superuser password for PostgreSQL. The default superuser is defined by the POSTGRES_USER environment variable

您需要指定POSTGRES_PASSWORD ENV

  db:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example
      POSTGRES_DB: mastodon_production
      POSTGRES_USER: mastodon

postgres-docker-Environment Variables

虽然第二个错误似乎主机无效或者您没有正确使用环境变量。

PG::ConnectionBad: could not connect to server: No such file or directory

将点环境文件更改为

 DB_HOST=db                                                                                                                          
 DB_USER=mastodon                                                                                                                                     
 DB_NAME=mastodon_production                                                                                                                          
 DB_PASS=example  <--- (the one which is set in DB)                                                                                                                           
 DB_PORT=5432

DB_HOST 应该是从另一个容器连接到数据库的服务名称。

安装 docker mastodon 时 postgres 不会启动

postgres won't start when installing docker mastodon

docker

docker-compose

mastodon