php_network_getaddresses: Docker 的管理员中的 getaddrinfo 失败错误

Question

我在使用 laravel 5/mysql 应用访问我的 docker 容器中的管理员时遇到问题。我收到错误：

SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name does not resolve

我的docker-compose.yml:

version: '3'

services:

    votes_app:
        build:
            context: ./web
            dockerfile: Dockerfile.yml

        container_name: votes_app_container
        environment:
            - APACHE_RUN_USER=#1000
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        ports:
            - 8081:80
        working_dir: ${APP_PTH_CONTAINER}


    votes_db:
        image: mysql:5.6.41
        container_name: votes_db_container

        restart: always
        environment: 
            MYSQL_ROOT_PASSWORD: 1
        volumes:
            - ${DB_PATH_HOST}:/var/lib/mysql


    votes_adminer:
        image: adminer
        container_name: votes_adminer_container
        restart: always
        ports:
            - 8082:8080
        links:
            - votes_db


    votes_composer:
        image: composer:1.6
        container_name: votes_composer_container
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        working_dir: ${APP_PTH_CONTAINER}
        command: composer install --ignore-platform-reqs

我为应用程序和数据库容器设置了不同的端口。

这里https://hub.docker.com/_/adminer/我发现：

Usage with external server You can specify the default host with the ADMINER_DEFAULT_SERVER environment variable. This is useful if you are connecting to an external server or a docker container named something other than the default db.

docker run -p 8080:8080 -e ADMINER_DEFAULT_SERVER=mysql adminer

在我的应用程序控制台中，我运行命令

$ docker run -p 8089:8080 -e ADMINER_DEFAULT_SERVER=votes_db adminer

在我的应用程序端口中未使用并且此命令无论如何都没有成功，因为我在尝试登录管理员时遇到了同样的错误 https://imgur.com/a/4HCdC1W。

哪种方法正确？

修改块#2：

在我的 docker-compose.yml :

version: '3'

services:

    votes_app:
        build:
            context: ./web
            dockerfile: Dockerfile.yml

        container_name: votes_app_container
        environment:
            - APACHE_RUN_USER=#1000
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        ports:
            - 8081:80
        working_dir: ${APP_PTH_CONTAINER}


    db:
        image: mysql:5.6.41
        restart: always
        environment: 
            MYSQL_ROOT_PASSWORD: 1
        volumes:
            - ${DB_PATH_HOST}:/var/lib/mysql


    adminer:
        image: adminer
        restart: always
        ports:
            - 8082:8080
        links:
            - db


    votes_composer:
        image: composer:1.6
        container_name: votes_composer_container
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        working_dir: ${APP_PTH_CONTAINER}
        command: composer install --ignore-platform-reqs

我重建了应用程序，但无法登录到管理员：https://imgur.com/a/JWVGfBA

我运行在我的 OS 控制台中指向其他未使用的 8089 端口：

$ docker run -p 8089:8080 -e ADMINER_DEFAULT_SERVER=db adminer
PHP 7.2.11 Development Server started at Thu Nov  1 07:00:46 2018
[Thu Nov  1 07:01:11 2018] ::ffff:172.17.0.1:34048 [200]: /
[Thu Nov  1 07:01:20 2018] ::ffff:172.17.0.1:34052 [302]: /
[Thu Nov  1 07:01:21 2018] ::ffff:172.17.0.1:34060 [403]: /?server=db&username=root

但是再次登录adminer到8089端口出错，但是报错信息不同:

https://imgur.com/a/a8qM4bt

怎么了？

修改块#3：

我想是的，因为在我重建容器后我进入了盒子并在控制台输出中看到“root”：

$ docker-compose exec votes_app bash
root@a4aa907373f5:/var/www/html# ls -la
total 1063
drwxrwxrwx 1 root root   4096 Oct 27 12:01 .
drwxr-xr-x 1 root root   4096 Oct 16 00:11 ..
-rwxrwxrwx 1 root root    234 Oct 13 07:15 .editorconfig
-rwxrwxrwx 1 root root   1029 Oct 31 06:10 .env
-rwxrwxrwx 1 root root    651 Oct 13 07:15 .env.example
drwxrwxrwx 1 root root   4096 Nov  1 11:10 .git
-rwxrwxrwx 1 root root    111 Oct 13 07:15 .gitattributes
-rwxrwxrwx 1 root root    294 Oct 13 07:15 .gitignore
-rwxrwxrwx 1 root root   4356 Oct 13 07:15 1.txt
drwxrwxrwx 1 root root      0 Oct 13 07:15 __DOCS
drwxrwxrwx 1 root root      0 Oct 13 07:15 __SQL
drwxrwxrwx 1 root root   4096 Oct 13 07:15 app
-rwxrwxrwx 1 root root   1686 Oct 13 07:15 artisan                                                                                                                                                                     
drwxrwxrwx 1 root root      0 Oct 13 07:15 bootstrap                                                                                                                                                                   
-rwxrwxrwx 1 root root   2408 Oct 13 07:15 composer.json                                                                                                                                                               
-rwxrwxrwx 1 root root 200799 Oct 13 07:15 composer.lock                                                                                                                                                               
drwxrwxrwx 1 root root   4096 Oct 13 07:15 config                                                                                                                                                                      
drwxrwxrwx 1 root root   4096 Oct 13 07:15 database                                                                                                                                                                    
-rwxrwxrwx 1 root root  52218 Oct 17 05:25 db_1_err.txt                                                                                                                                                                
-rwxrwxrwx 1 root root 482562 Oct 13 07:15 package-lock.json                                                                                                                                                           
-rwxrwxrwx 1 root root   1168 Oct 13 07:15 package.json                                                                                                                                                                
-rwxrwxrwx 1 root root   1246 Oct 13 07:15 phpunit.xml                                                                                                                                                                 
drwxrwxrwx 1 root root   4096 Oct 13 07:15 public
-rwxrwxrwx 1 root root     66 Oct 13 07:15 readme.txt
drwxrwxrwx 1 root root      0 Oct 13 07:15 resources
drwxrwxrwx 1 root root   4096 Oct 13 07:15 routes
-rwxrwxrwx 1 root root    563 Oct 13 07:15 server.php
drwxrwxrwx 1 root root   4096 Oct 13 07:15 storage
drwxrwxrwx 1 root root      0 Oct 13 07:15 tests
drwxrwxrwx 1 root root   8192 Nov  1 13:05 vendor
-rwxrwxrwx 1 root root   1439 Oct 13 07:15 webpack.mix.js
-rwxrwxrwx 1 root root 261143 Oct 13 07:15 yarn.lock
root@a4aa907373f5:/var/www/html# echo $USER

root@a4aa907373f5:/var/www/html#  uname -a
Linux a4aa907373f5 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 x86_64 GNU/Linux

无论如何都可以发布吗？

修改块#4

我重新制作了这个 docker，我设置了容器的默认名称（我想这会引起一些混淆）并且我设置了图像：composer:1.8 最新版本所以在我的 docker-compose.yml 中：

version: '3.1'

services:

    web:

        build:
            context: ./web
            dockerfile: Dockerfile.yml

        environment:
            - APACHE_RUN_USER=#1000
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        ports:
            - 8081:80
        working_dir: ${APP_PTH_CONTAINER}

    db:
        image: mysql:5.6.41
        restart: always
        environment: 
            MYSQL_ROOT_PASSWORD: 1
        volumes:
            - ${DB_PATH_HOST}:/var/lib/mysql

    adminer:
        image: adminer
        restart: always
        ports:
            - 8082:8080
        links:
            - db

    composer:
        image: composer:1.8
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        working_dir: ${APP_PTH_CONTAINER}
        command: composer install --ignore-platform-reqs

并在 web/Dockerfile.yml 中：

FROM php:7.2-apache

RUN apt-get update -y && apt-get install -y libpng-dev nano

RUN docker-php-ext-install \
    pdo_mysql \
    && a2enmod \
    rewrite

但是无论如何在重建项目并连接到管理员之后 http://127.0.0.1:8082 url 我收到错误：

SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Try again

P.S.: 我在同一个本地安装了其他 laravel 5.0/php:5.6 / image: composer:1.6 / mcrypt docker 项目我的笔记本电脑的服务器，对我来说工作正常，我可以输入管理员并可以从这个应用程序登录到数据库。此 docker 项目有文件：

docker-compose.yml:

version: '3.1'

services:

    web:
        build:
            context: ./web
            dockerfile: Dockerfile.yml

        environment:
            - APACHE_RUN_USER=#1000
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        ports:
            - 8085:80
        working_dir: ${APP_PTH_CONTAINER}


    db:
        image: mysql:5.5.62
        restart: always
        environment: 
            MYSQL_ROOT_PASSWORD: 1
        volumes:
            - ${DB_PATH_HOST}:/var/lib/mysql


    adminer:
        image: adminer
        restart: always
        ports:
            - 8086:8080
        links:
            - db


    composer:
        image: composer:1.6
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        working_dir: ${APP_PTH_CONTAINER}
        command: composer install --ignore-platform-reqs

和Dockerfile.yml：

FROM php:5.6-apache

RUN apt-get update -y && apt-get install -y libpng-dev   nano  libmcrypt-dev

RUN docker-php-ext-install \
    pdo_mysql \
    mcrypt \
    && a2enmod \
    rewrite

这个问题是否是某些 php 7.2 的特定功能（比如缺少某些软件包？）

修改块 #5: 定义：

phpmyadmin:
    depends_on:
      - db
    image: phpmyadmin/phpmyadmin
    restart: always
    ports:
      - 8082:8080
    environment:
      PMA_HOST: db
      MYSQL_ROOT_PASSWORD: 1

运行 http://127.0.0.1:8082/ 我在浏览器中遇到错误：

This site can’t be reached The webpage at http://127.0.0.1:8082/ might be temporarily down or it may have moved permanently to a new web address.
ERR_SOCKET_NOT_CONNECTED

尝试应用程序时 url http://127.0.0.1:8081/public/ 我收到错误消息：

SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution

修改块 #6: 我在 docker-compose.yml 中用 phpmyadmin 重制了 :

version: '3.1'

services:

#  docker run -p 8089:8080 -e ADMINER_DEFAULT_SERVER=db adminer
    web:

        # env_file:
        #     - ./mysql.env

        build:
            context: ./web
            dockerfile: Dockerfile.yml

        environment:
            - APACHE_RUN_USER=#1000
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        ports:
            - 8081:80
        working_dir: ${APP_PTH_CONTAINER}


    db:
        image: mysql:5.6.41
        restart: always
        environment: 
            MYSQL_ROOT_PASSWORD: 1
        volumes:
            - ${DB_PATH_HOST}:/var/lib/mysql


    phpmyadmin:
        depends_on:
          - db
        image: phpmyadmin/phpmyadmin
        restart: always
        ports:
          - 8082:80
        environment:
          PMA_HOST: db
          MYSQL_ROOT_PASSWORD: 1

    composer:
        image: composer:1.8
        volumes:
            - ${APP_PATH_HOST}:${APP_PTH_CONTAINER}
        working_dir: ${APP_PTH_CONTAINER}
        command: composer install --ignore-platform-reqs

但试图在

登录 phpMyAdmin

http://127.0.0.1:8082

我遇到了同样的错误：https://imgur.com/a/cGeudI6

我也有端口 :

$ docker ps
CONTAINER ID        IMAGE                    COMMAND                  CREATED             STATUS                          PORTS                            NAMES
471de34926b9        phpmyadmin/phpmyadmin    "/run.sh supervisord…"   41 minutes ago      Up 41 minutes                   9000/tcp, 0.0.0.0:8082->80/tcp   votes_docker_phpmyadmin_1
226fcdbeeb25        mysql:5.6.41             "docker-entrypoint.s…"   41 minutes ago      Restarting (1) 49 seconds ago                                    votes_docker_db_1
1cb1efb10561        votes_docker_web         "docker-php-entrypoi…"   41 minutes ago      Up 41 minutes                   0.0.0.0:8081->80/tcp             votes_docker_web_1
d6718cd16256        adminer                  "entrypoint.sh docke…"   13 hours ago        Up About an hour                0.0.0.0:8088->8080/tcp           ads_docker_adminer_1
1928a54e1d66        mysql:5.5.62             "docker-entrypoint.s…"   13 hours ago        Up About an hour                3306/tcp                         ads_docker_db_1
e43b2a1e9cc7        adminer                  "entrypoint.sh docke…"   6 days ago          Up About an hour                0.0.0.0:8086->8080/tcp           youtubeapi_demo_adminer_1
47a034fca5a2        mysql:5.5.62             "docker-entrypoint.s…"   6 days ago          Up About an hour                3306/tcp                         youtubeapi_demo_db_1
3dcc1a4ce8f0        adminer                  "entrypoint.sh docke…"   6 weeks ago         Up About an hour                0.0.0.0:8083->8080/tcp           lprods_adminer_container
933d9fffaf76        postgres:9.6.10-alpine   "docker-entrypoint.s…"   6 weeks ago         Up About an hour                0.0.0.0:5433->5432/tcp           lprods_db_container

修改块#7 我不确定我可以提供哪些调试信息，但似乎登录有一些警告。他们很关键吗？我可以提供哪些附加调试信息？

serge@serge:/mnt/_work_sdb8/wwwroot/lar/DockerApps/votes_docker$ docker-compose up -d --build              
Creating network "votes_docker_default" with the default driver 
Building web 
Step 1/3 : FROM php:7.2-apache 
 ---> cf1a377ba77f 
Step 2/3 : RUN apt-get update -y && apt-get install -y libpng-dev nano 
 ---> Using cache 
 ---> 2c4bce73e8cc 
Step 3/3 : RUN docker-php-ext-install     pdo_mysql     && a2enmod     rewrite 
 ---> Using cache 
 ---> 241c9bf59ac0 
Successfully built 241c9bf59ac0 
Successfully tagged votes_docker_web:latest 
Creating votes_docker_composer_1   ... done 
Creating votes_docker_web_1        ... done 
Creating votes_docker_db_1       ... done 
Creating votes_docker_phpmyadmin_1 ... done 
serge@serge:/mnt/_work_sdb8/wwwroot/lar/DockerApps/votes_docker$ clear 
serge@serge:/mnt/_work_sdb8/wwwroot/lar/DockerApps/votes_docker$ docker logs --tail=20  votes_docker_web_1 
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.20.0.4. Set the 'ServerName' directive globally to suppress this message 
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 172.20.0.4. Set the 'ServerName' directive globally to suppress this message 
[Wed Dec 26 12:26:34.113194 2018] [mpm_prefork:notice] [pid 1] AH00163: Apache/2.4.25 (Debian) PHP/7.2.11 configured -- resuming normal operations 
[Wed Dec 26 12:26:34.113247 2018] [core:notice] [pid 1] AH00094: Command line: 'apache2 -D FOREGROUND' 
serge@serge:/mnt/_work_sdb8/wwwroot/lar/DockerApps/votes_docker$ docker logs --tail=20  votes_docker_db_1 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'INNODB_CMPMEM' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'INNODB_CMP_RESET' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'INNODB_CMP' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'INNODB_LOCK_WAITS' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'INNODB_LOCKS' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'INNODB_TRX' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'BLACKHOLE' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'ARCHIVE' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'MRG_MYISAM' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'MyISAM' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'MEMORY' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'CSV' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'sha256_password' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'mysql_old_password' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'mysql_native_password' 
2018-12-26 12:26:43 1 [Note] Shutting down plugin 'binlog' 
2018-12-26 12:26:43 1 [Note] mysqld: Shutdown complete 

serge@serge:/mnt/_work_sdb8/wwwroot/lar/DockerApps/votes_docker$ docker logs --tail=20  votes_docker_composer_1    
> @php artisan package:discover 
Discovered Package: aloha/twilio 
Discovered Package: barryvdh/laravel-debugbar 
Discovered Package: beyondcode/laravel-dump-server 
Discovered Package: cviebrock/eloquent-sluggable 
Discovered Package: davejamesmiller/laravel-breadcrumbs 
Discovered Package: fideloper/proxy 
Discovered Package: intervention/image 
Discovered Package: itsgoingd/clockwork 
Discovered Package: jrean/laravel-user-verification 
Discovered Package: laravel/tinker 
Discovered Package: laravelcollective/html 
Discovered Package: mews/captcha 
Discovered Package: nesbot/carbon 
Discovered Package: nunomaduro/collision 
Discovered Package: proengsoft/laravel-jsvalidation 
Discovered Package: rap2hpoutre/laravel-log-viewer 
Discovered Package: themsaid/laravel-mail-preview 
Discovered Package: yajra/laravel-datatables-oracle 
Package manifest generated successfully. 
serge@serge:/mnt/_work_sdb8/wwwroot/lar/DockerApps/votes_docker$ docker logs --tail=20  votes_docker_phpmyadmin_1 
phpMyAdmin not found in /var/www/html - copying now... 
Complete! phpMyAdmin has been successfully copied to /var/www/html 
/usr/lib/python2.7/site-packages/supervisor/options.py:461: UserWarning: Supervisord is running as root and it is searching for its configuration file in default locations (including its current working directory); 
you probably want to specify a "-c" argument specifying an absolute path to a configuration file for improved security. 
  'Supervisord is running as root and it is searching ' 
2018-12-26 12:26:35,973 CRIT Supervisor is running as root.  Privileges were not dropped because no user is specified in the config file.  If you intend to run as root, you can set user=root in the config file to av
oid this message. 
2018-12-26 12:26:35,973 INFO Included extra file "/etc/supervisor.d/nginx.ini" during parsing 
2018-12-26 12:26:35,973 INFO Included extra file "/etc/supervisor.d/php.ini" during parsing 
2018-12-26 12:26:35,984 INFO RPC interface 'supervisor' initialized 
2018-12-26 12:26:35,984 CRIT Server 'unix_http_server' running without any HTTP authentication checking 
2018-12-26 12:26:35,984 INFO supervisord started with pid 1 
2018-12-26 12:26:36,986 INFO spawned: 'php-fpm' with pid 23 
2018-12-26 12:26:36,988 INFO spawned: 'nginx' with pid 24 
[26-Dec-2018 12:26:37] NOTICE: fpm is running, pid 23 
[26-Dec-2018 12:26:37] NOTICE: ready to handle connections 
2018-12-26 12:26:38,094 INFO success: php-fpm entered RUNNING state, process has stayed up for > than 1 seconds (startsecs) 
2018-12-26 12:26:38,095 INFO success: nginx entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)

怎么了？

谢谢！

Answer 1

您可以在 https://hub.docker.com/_/adminer/

例子

version: '3.1'

services:

  adminer:
    image: adminer
    restart: always
    ports:
      - 8080:8080

  db:
    image: mysql:5.6
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: example

Answer 2

尝试使用 phpMyAdmin :)

version: '3.2'
services:
    db:
        image: mysql:5.7

        restart: always
        environment:
          MYSQL_ROOT_PASSWORD: myUserPass
          MYSQL_DATABASE: mydb
          MYSQL_USER: myUser
          MYSQL_PASSWORD: myUser

    phpmyadmin:
        depends_on:
          - db
        image: phpmyadmin/phpmyadmin
        restart: always
        ports:
          - 8088:80
        environment:
          PMA_HOST: db
          MYSQL_ROOT_PASSWORD: myUserPass

Answer 3

您的设置问题是因为环境变量 DB_PATH_HOST。您已在撰写文件中设置好所有内容。但是在运行ning docker-compose 之前你应该定义环境变量 DB_PATH_HOST。由于未定义环境变量，因此会引发错误。 See this for more details on Environment variables and it's precedence in Docker.

所以你应该做的是，在启动 docker 容器之前，你应该通过在撰写文件中定义它或在 shell 中将其导出为 shell 来定义环境变量运行ning docker-compose 之前的变量或者应该使用 env 文件或在 docker 文件中使用 ENV 指令。（这些是定义环境变量的所有可能方法，我已经列出了所有方法，先出现的方法优先。refer this for more info）。

所以正确的docker-compose.yml文件应该如下所示。

version: '3.2'
services:
   db:
        image: mysql:5.6.41
        restart: always
        environment: 
            MYSQL_ROOT_PASSWORD: 1
            DB_PATH_HOST: /tmp/mysql #this is the host location where mysql data will be stored.
        volumes:
            - ${DB_PATH_HOST}:/var/lib/mysql

    phpmyadmin:
        depends_on:
          - db
        image: phpmyadmin/phpmyadmin
        restart: always
        ports:
          - 8082:80
        environment:
          PMA_HOST: db
          MYSQL_ROOT_PASSWORD: 1

现在进入下一点，我从您的讨论中看到您得出结论，从数据库容器中删除卷可以解决您的问题。但实际上不是。如何？

首先让我解释一下为什么在这里使用音量。我的 mysql 生成的数据应该存储在某个地方。 Docker 默认情况下运行s 容器处于非持久模式，这意味着运行ning docker conatiner 生成的所有数据将在该容器被引入时被删除 down/killed。因此，为了持久化（store/save）数据，我们使用卷。 docker 中使用了不同类型的卷。 I encourage you to read Storage documentation of docker for more details。这里使用的卷类型是绑定挂载，您将主机目录绑定到 docker 目录，并且 docker 将所有数据直接存储在主机中，这样即使 docker 容器被关闭数据仍然保留。

因此，如果您不在 mysql 中使用卷，则无论您做什么，所有数据库更改都将在容器停止时丢失。

奖金：

默认情况下 MySQL 容器不允许远程连接。因此，如果您想从 phpmyadmin 以外的任何其他地方访问 mysql。您必须允许远程连接。
由于我们在此处保留数据，因此只有在您第一次启动 mysqll 容器时才会设置 root 密码。从下一次开始，root 密码环境变量将被忽略。
如果您主要使用 docker exec 登录到 docker 容器，您可以看到您将成为 root 用户。这是因为每当您使用 docker build 或 docker-compose build 创建带有 Docker 文件的 docker 容器时，除非您在 Dockerfile 到 上指定指令创建并使用一个新用户 docker 将运行一切都作为 root 用户。
现在，每当您运行编写上述文件时。您可以看到 mysql 数据位置的所有权将被更改。这是因为无论何时将主机目录挂载到 docker，Docker 都会根据容器的 Docker 文件定义根据用户和组更改文件权限。这里 mysql has defined a user and group called mysql 而 uid 和 gid 是 999。因此 /tmp/mysql 将拥有 999:999 作为所有权。如果这些 id 与您系统中的任何其他用户帐户映射，您将在主机中执行 ls -al 时看到这些名称而不是 id。如果没有映射 id，那么您将直接看到 id。
我使用 /tmp/mysql 作为 mysql 数据目录作为示例。 请不要使用 /tmp 中的数据，只要系统重新启动就会被删除。

Answer 4

这个问题已经回答了，但是把我对类似问题的解决方法加到这里以供参考。

在我的 docker-compose phpmyadmin/adminer 服务块中添加一个 'links' 参数为我解决了这个问题，基于数据库块的服务名称实际上是 db 的假设在上面回答的例子中也是如此。 link 使得在 phpmyadmin 登录界面中使用 'db' 作为主机成为可能，它将连接。

links:
  - db:db

Answer 5

将容器名称更改为 db for mysql 图像对我来说很重要你可以在 https://hub.docker.com/_/adminer/

中看到它

服务： D b：图片：mysql:5.6

Answer 6

我遇到了同样的问题，然后我发现服务器地址的管理员应用程序中的默认值是 'db'，这与我的 MySQL 容器的服务名称不匹配。

php_network_getaddresses: Docker 的管理员中的 getaddrinfo 失败错误

php_network_getaddresses: getaddrinfo failed error in Docker's adminer

mysql

dns

docker

adminer

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