我正在尝试在由以下服务组成的 Docker 堆栈内创建一个 Wordpress 网站:
wordpress
- Wordpress 网站本身db
- MySQL 容器
我有以下stack.yml
文件:
version: '3.1'
networks:
abtehnic:
services:
db:
image: mysql:latest
restart: always
networks:
- abtehnic
environment:
MYSQL_ROOT_PASSWORD: XXXXX
MYSQL_DATABASE: wordpress
MYSQL_USER: wordpress
MYSQL_PASSWORD: barbu123
wordpress:
image: abtehnic-wordpress
depends_on:
- db
restart: always
ports:
- 80
environment:
WORDPRESS_DB_HOST: db:3306
WORDPRESS_DB_USER: wordpress
WORDPRESS_DB_PASSWORD: wordpress
WORDPRESS_DB_PASSWORD: barbu123
networks:
- abtehnic
volumes:
- ./source:/var/www/html
我使用以下命令部署堆栈:
$ docker stack deploy -c stack.yml abtehnic
该docker ps
命令输出以下内容:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
256e65fe2c4c mysql:latest "docker-entrypoint..." About a minute ago Up About a minute 3306/tcp abtehnic_db.1.mo0xp17adt2jocu9yivkzg19g
26481d8bab95 wordpress:4.8 "docker-entrypoint..." About a minute ago Up About a minute 80/tcp abtehnic_wordpress.1.tiikrjwm1kcmxjg7v74vrcquw
我正在尝试通过以下方式找出映射端口:
$ docker port <container_id for wordpress>
并且其输出为空。此外,当我运行时,docker logs <container_id_for_wordpress>
我得到以下信息:
Warning: mysqli::mysqli(): php_network_getaddresses: getaddrinfo failed: Name or service not known in - on line 22
Warning: mysqli::mysqli(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Name or service not known in - on line 22
MySQL Connection Error: (2002) php_network_getaddresses: getaddrinfo failed: Name or service not known
Warning: mysqli::mysqli(): (HY000/2002): Connection refused in - on line 22
MySQL Connection Error: (2002) Connection refused
Warning: mysqli::mysqli(): (HY000/2002): Connection refused in - on line 22
MySQL Connection Error: (2002) Connection refused
MySQL Connection Error: (2002) Connection refused
Warning: mysqli::mysqli(): (HY000/2002): Connection refused in - on line 22
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 10.0.1.3. Set the 'ServerName' directive globally to suppress this message
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 10.0.1.3. Set the 'ServerName' directive globally to suppress this message
[Sat Oct 28 16:05:32.189285 2017] [mpm_prefork:notice] [pid 1] AH00163: Apache/2.4.10 (Debian) PHP/5.6.31 configured -- resuming normal operations
[Sat Oct 28 16:05:32.189321 2017] [core:notice] [pid 1] AH00094: Command line: 'apache2 -D FOREGROUND'
以下是我的问题:
- 为什么容器无法
wordpress
访问db
容器? - 为什么没有任何端口可以用来从我的主机访问 Wordpress 网站?
答案1
depends_on:
- db
这只是确保数据库容器在 wordpress 容器之前完全加载。您需要告诉 dockerdb
从容器链接容器wordpress
以按名称引用它。
docker-compose 在底层所做的是获取 docker 为容器提供的 ip db
,并向容器添加一个/etc/hosts
条目wordpress
,以便您可以通过名称引用它。
因此,请尝试将其添加到 wordpress 部分
links:
- db
答案2
我假设您正在做类似的事情docker port 26481d8bab95
,根据您的问题,您定义了端口 80,所以您的答案是端口 80:
# docker run -d -p 80:80 wordpress
dc9e4aab1015eb5d82cf489e2943d76084faceaf3093bc3238964d6cfa81ab1c
# docker port dc9e4aab1015eb5d82cf489e2943d76084faceaf3093bc3238964d6cfa81ab1c
80/tcp -> 0.0.0.0:80
#
无论是否堆叠,你仍然可以使用docker port
mysqld
httpd
与wordpress相比,需要更长时间才能开始比较,这就是您看到错误的原因- 从 docker 的角度来看,它配置正确,并且您无法访问它的实际原因可能有很多,例如防火墙等等。