我已经将MariaDB安装在Docker容器中,并且工作正常。我想将数据目录移动到外部卷,以将数据库与容器生命周期分开。我遵循了here的说明,但是当我现在尝试连接到引擎时,我得到了:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/www/databases/mysqld/mysqld.sock' (2)
“ / var / www /”是外部卷的安装点。我想知道这是否是权限,因此我将MariaDB容器中的数据库文件夹的所有者设置为“ myqsl”,即MySQL帐户的名称。
drwxr-xr-x 3 mysql mysql 4096 Jan 15 16:38 databases
drwxr-xr-x 3 1000 1000 4096 Jan 15 13:59 files
drwxr-xr-x 2 1000 1000 4096 Jan 15 15:20 html
drwxr-xr-x 3 1000 1000 4096 Jan 15 13:59 src
注意:在主机文件系统中,所有者列出为999:docker。这有关系吗?
drwxr-xr-x 3 999 docker 4096 Jan 15 16:38 databases
我想让我将数据库存储在该卷中的原因是什么?
这是我的/etc/MySQL/my.cnf文件(定义各种文件夹的位)的部分转储:
[client]
port = 3306
#socket = /var/run/mysqld/mysqld.sock
socket = /var/www/databases/mysqld/mysqld.sock
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
#socket = /var/run/mysqld/mysqld.sock
socket = /var/www/databases/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
#user = mysql
pid-file = /var/run/mysqld/mysqld.pid
#socket = /var/run/mysqld/mysqld.sock
socket = /var/www/databases/mysqld/mysqld.sock
port = 3306
basedir = /usr
#datadir = /var/lib/mysql
datadir = /var/www/databases
tmpdir = /tmp
lc_messages_dir = /usr/share/mysql
lc_messages = en_US
skip-external-locking
docker-compose.yml:
这是我的yml文件的内容。我是这个东西的初学者,所以可能充满了空洞。请客气。 :)
version: '3.2'
volumes:
mwApache2Data:
external: true
webContent:
external: true
networks:
frontend:
backend:
services:
php:
build: './php7.1/'
image: php7.1.26-fpm:1.0
restart: always
container_name: php7.1.26-fpm
networks:
- backend
# volumes:
# - mwApache2Data:/app
web:
build: ./apache2/
image: apache2:1.0
restart: always
container_name: AOW_apache2Server
depends_on:
- php
- mariadb
networks:
- frontend
- backend
expose:
- "80"
- "81"
- "443"
- "8083"
ports:
- "80:80"
- "81:81"
- "443:443"
- "8083:8083"
volumes:
- mwApache2Data:/app
- webContent:/var/www
mariadb:
build: ./mariaDB/
image: mariadb_10.4.0
container_name: mariaDB_10.4.0
restart: always
networks:
- backend
environment:
- MYSQL_DATABASE=lg_wiki_db
- MYSQL_USER=wikiuser
- MYSQL_PASSWORD=****
- MYSQL_ROOT_PASSWORD=****
volumes:
- webContent:/var/www
mediawiki:
image: mediawiki:1.31.1
container_name: mediawiki_1.31.1
restart: always
depends_on:
- web
networks:
- backend
# ports:
# - 8080:80
links:
- mariadb
volumes:
- webContent:/var/www/
# After initial setup, download LocalSettings.php to the same directory as
# this yaml and uncomment the following line and use compose to restart
# the mediawiki service
# - ./LocalSettings.php:/var/www/html/LocalSettings.php
phpmyadmin:
image: phpmyadmin/phpmyadmin
container_name: phpmyadmin
restart: always
depends_on:
- web
expose:
- 80
networks:
- frontend
- backend
ports:
- 8080:80
links:
- mariadb
答案 0 :(得分:0)
您是否尝试过在docker-compose中安装卷/ var / www / databases? 在您链接的示例之后,我建议:
...
mysql:
image: mysql:5.6.40
networks:
- backend
environment:
- MYSQL_ROOT_PASSWORD=rootpassword
volumes:
- ./your_persistent_db_data_dir:/var/www/databases
要考虑的另一件事是网络问题。在这种情况下,我应该尝试在所有人之间共享docker网络,并将network_mode: host
添加到您要在他们之间进行通信的每个服务中。
最后,如果这些都不起作用,我尝试尝试的另一件事是尝试在主机中安装MariaDB并将文件/var/www/databases/mysqld/mysqld.sock挂载为卷。我不建议这样做,也不是很优雅,此外,我的目标是将数据库放置在具有外部持久性数据的docker中。
答案 1 :(得分:0)
谢谢大家的建议。最后,我发现了一些在这所房子里的支持。
诀窍是将默认数据库文件夹安装为外部卷:
volumes:
- databases:/var/lib/mysql
大多数情况下都是即时运行的。唯一的警告是我的撰写文件定义了MySQL根凭据。当安装挂起时,这些被覆盖,因此我必须在第一次启动容器时手动重置根密码。其实这个现在应该是固定的,因为数据目录现在是外部体积,所以一个新的形象应该拿起相同的root口令。应该能够脚本此更改安装文件。