docker - 通过 docker 使用 postgres 设置 nextcloud

Question

我想通过 docker 使用 postgres 在本地设置 nextcloud。我能够在不尝试使用 postgres(即使用默认的 sqllite)的情况下这样做，但是在将 postgres docker 与 nc 图像结合使用时我遇到了问题。

我的笔记本电脑是 Ubuntu 18.04。

目标:我想在本地设置一个容器化的设置，以便我可以随时轻松(或至少在某种程度上轻松)迁移到云提供商。我正在为 postgres 和 nc 设置卷，以便我可以在我选择时将所有内容传输到远程。

这是我的存储库，其中包括 Dockerfile 和 docker-compose:

Dockerfile:(请注意，我添加了 smbclient，因为我通过艰难的方式了解到我需要它来安装我想使用的用于外部存储的应用程序)

FROM nextcloud:production-apache
RUN apt-get update && apt-get install -y \
   smbclient

我的 docker-compose 文件:

version: "3.5"
services:
  nextcloud:
    build:
      context: .
      dockerfile: ./Dockerfile
    ports:
      - "8080:80"
    volumes:
      - $PROJECTS_DIR/Personal/mc1/nextcloud:/var/www/html
      - $PROJECTS_DIR/Personal/mc1/apps:/var/www/html/custom_apps
      - $PROJECTS_DIR/Personal/mc1/config:/var/www/html/config 
      - $PROJECTS_DIR/Personal/mc1/data:/var/www/html/data
    environment:
      - POSTGRES_HOST=nextcloud_db_1 # service name for postgres as assigned by Docker
      - POSTGRES_DB=nextcloud_db
      - POSTGRES_USER=postgres # will access postgres over 5432
      - POSTGRES_PASSWORD=testing123
    depends_on:
      - db

  db:
    image: postgres
    restart: always
    volumes:
      - ./postgres-data:/var/lib/postgresql/data
    environment:
      - POSTGRES_DB=nextcloud_db
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=testing123

我不是很确定如何设置它并从另一篇文章中借用 here .

结果:

在 repo 中有一个终端:

docker-compose build
docker-compose up -d

然后我可以在 http://localhost:8080/index.php 访问 nc，我在其中选择“postgres”并从我的 docker-compose 输入 postgres 详细信息:

在上面的屏幕截图中输入所有详细信息后，当我单击“完成设置”时，出现此错误屏幕:

我在卷的任何地方搜索了一个名为“log”的文件，并找到了 data/nextcloud.log。这是它显示的内容:

{"reqId":"WqeSp92UPr935aMdZ0XY","level":2,"time":"2021-01-17T23:32:25+00:00","remoteAddr":"192.168.32.1","user":"--","app":"no app in context","method":"POST","url":"/index.php","message":"Host localhost was not connected to because it violates local access rules","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0","version":""}
{"reqId":"WqeSp92UPr935aMdZ0XY","level":2,"time":"2021-01-17T23:32:25+00:00","remoteAddr":"192.168.32.1","user":"--","app":"no app in context","method":"POST","url":"/index.php","message":"Host localhost was not connected to because it violates local access rules","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0","version":""}
{"reqId":"WqeSp92UPr935aMdZ0XY","level":3,"time":"2021-01-17T23:32:26+00:00","remoteAddr":"192.168.32.1","user":"--","app":"no app in context","method":"POST","url":"/index.php","message":{"Exception":"Doctrine\\DBAL\\DBALException","Message":"Failed to connect to the database: An exception occurred in driver: SQLSTATE[08006] [7] could not translate host name \"nextcloud_db_1\" to address: Temporary failure in name resolution","Code":0,"Trace":[{"file":"/var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php","line":428,"function":"connect","class":"OC\\DB\\Connection","type":"->","args":[]},{"file":"/var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php","line":388,"function":"getDatabasePlatformVersion","class":"Doctrine\\DBAL\\Connection","type":"->","args":[]},{"file":"/var/www/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php","line":330,"function":"detectDatabasePlatform","class":"Doctrine\\DBAL\\Connection","type":"->","args":[]},{"file":"/var/www/html/lib/private/DB/QueryBuilder/QueryBuilder.php","line":119,"function":"getDatabasePlatform","class":"Doctrine\\DBAL\\Connection","type":"->","args":[]},{"file":"/var/www/html/lib/private/Setup/PostgreSQL.php","line":54,"function":"expr","class":"OC\\DB\\QueryBuilder\\QueryBuilder","type":"->","args":[]},{"file":"/var/www/html/lib/private/Setup.php","line":359,"function":"setupDatabase","class":"OC\\Setup\\PostgreSQL","type":"->","args":["rstudio"]},{"file":"/var/www/html/core/Controller/SetupController.php","line":75,"function":"install","class":"OC\\Setup","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/base.php","line":946,"function":"run","class":"OC\\Core\\Controller\\SetupController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/index.php","line":37,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/lib/private/DB/Connection.php","Line":72,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0","version":"20.0.4.0"}
{"reqId":"WqeSp92UPr935aMdZ0XY","level":2,"time":"2021-01-17T23:32:26+00:00","remoteAddr":"192.168.32.1","user":"--","app":"no app in context","method":"POST","url":"/index.php","message":"Error trying to connect as \"postgres\", assuming database is setup and tables need to be created","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0","version":"20.0.4.0"}
{"reqId":"WqeSp92UPr935aMdZ0XY","level":3,"time":"2021-01-17T23:32:26+00:00","remoteAddr":"192.168.32.1","user":"--","app":"no app in context","method":"POST","url":"/index.php","message":{"Exception":"Doctrine\\DBAL\\DBALException","Message":"Failed to connect to the database: An exception occurred in driver: SQLSTATE[08006] [7] could not translate host name \"nextcloud_db_1\" to address: Temporary failure in name resolution","Code":0,"Trace":[{"file":"/var/www/html/lib/private/Setup/PostgreSQL.php","line":98,"function":"connect","class":"OC\\DB\\Connection","type":"->","args":[]},{"file":"/var/www/html/lib/private/Setup.php","line":359,"function":"setupDatabase","class":"OC\\Setup\\PostgreSQL","type":"->","args":["rstudio"]},{"file":"/var/www/html/core/Controller/SetupController.php","line":75,"function":"install","class":"OC\\Setup","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/base.php","line":946,"function":"run","class":"OC\\Core\\Controller\\SetupController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/index.php","line":37,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/lib/private/DB/Connection.php","Line":72,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0","version":"20.0.4.0"}
{"reqId":"webBnsoANvgRaansmKbZ","level":3,"time":"2021-01-17T23:32:41+00:00","remoteAddr":"192.168.32.1","user":"--","app":"index","method":"POST","url":"/index.php","message":{"Exception":"OC\\DatabaseException","Message":"An exception occurred while executing 'SHOW SERVER_VERSION':\n\nFailed to connect to the database: An exception occurred in driver: SQLSTATE[08006] [7] could not translate host name \"nextcloud_db_1\" to address: Temporary failure in name resolution","Code":0,"Trace":[{"file":"/var/www/html/lib/private/legacy/OC_DB.php","line":143,"function":"prepare","class":"OC_DB","type":"::","args":["SHOW SERVER_VERSION",null,null]},{"file":"/var/www/html/lib/private/legacy/OC_Util.php","line":984,"function":"executeAudited","class":"OC_DB","type":"::","args":[{"sql":"SHOW SERVER_VERSION","limit":null,"offset":null}]},{"file":"/var/www/html/lib/private/legacy/OC_Util.php","line":964,"function":"checkDatabaseVersion","class":"OC_Util","type":"::","args":[]},{"file":"/var/www/html/lib/base.php","line":660,"function":"checkServer","class":"OC_Util","type":"::","args":[{"__class__":"OC\\SystemConfig"}]},{"file":"/var/www/html/lib/base.php","line":1091,"function":"init","class":"OC","type":"::","args":[]},{"file":"/var/www/html/index.php","line":35,"args":["/var/www/html/lib/base.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/legacy/OC_DB.php","Line":73,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0","version":"20.0.4.0"}

我的设置是否正常或这是一个错误？我对我在 docker-compose 中添加的 postgres 没有信心，或者我是否做对了？

我如何使用 postgres 使用 docker 和卷在本地设置 nextcloud，以便我可以将我的整个 nextcloud 设置从我选择的云提供商转移到云提供商？

Answer 1

我很确定问题出在这一行:

- POSTGRES_HOST=nextcloud_db_1 # service name for postgres as assigned by Docker

如果您正在执行 docker-compose up 的目录没有调用“nextcloud”，它将无法工作。

例如:如果您在“nc”目录中，则必须将主机设置为 nc_db_1

但是还有一个选择:

你可以设置一个主机名来避免这种问题

docker-compose.yml 示例

version: "3.5"
services:
  nextcloud:
    build:
      context: .
      dockerfile: ./Dockerfile
    ports:
      - "8080:80"
    environment:
      - POSTGRES_HOST=nc-postgres  # HERE
      - POSTGRES_DB=nextcloud_db
      - POSTGRES_USER=postgres 
      - POSTGRES_PASSWORD=testing123
    depends_on:
      - db

  db:
    image: postgres
    restart: always
    hostname: 'nc-postgres'  # AND HERE 
    volumes:
      - ./postgres-data:/var/lib/postgresql/data
    environment:
      - POSTGRES_DB=nextcloud_db
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=testing123

结果: