标签: mysql-connector

以下代码（从与 mysql 服务器不同的机器运行，在同一局域网内），使用 Python3 和 mysql.connector 工作在本地连接到 MySQL 数据库：

import mysql.connector
cnx = mysql.connector.connect(host='192.168.0.24', database='import_test',user='user_builder', password='password***', port=3309)

但是，下面的代码，远程连接到同一个数据库， 不能正常工作：

import mysql.connector
cnx = mysql.connector.connect(host='http://imaginarywebsite.ddns.net', database='import_test',user='user_builder', password='password***', port=3309)

相反，我收到以下错误：

File "C:\Users\****\AppData\Roaming\Python\Python34\site-packages\mysql\connector\network.py", line 464, in open_connection
     errno=2003, values=(self.get_address(), _strioerror(err)))
mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on 'http://imaginarywebsite.ddns.net:3309' (11004 getaddrinfo failed)

这是我的 my.cnf 文件的摘录：

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
innodb_buffer_pool_size=4G
innodb_log_file_size=1024M
innodb_read_io_threads=64
innodb_write_io_threads=64
innodb_io_capacity=7000
innodb_thread_concurrency=0

port            = 3309
bind-address    = 0.0.0.0

所以，这是目前有效的：

• 使用 192.168.0.24:3309 地址在本地连接到数据库，所以我确定问题不是来自“权限授予”或任何登录/密码/端口错误。
• 使用http://imaginarywebsite.ddns.net/phpmyadmin通过 phpmyadmin 远程连接，所以我确定问题不是来自我的 DNS …

很多地方都说明，如果要在MySQL中使用JDBC，并且支持UTF-8，则需要useUnicode=true在JDBC URL中添加。

例如：

• JDBC MySQL UTF-8 字符串写入问题
• java中utf8的问题

但是，我在 Mac OS X 上使用 MySQL 5.7.19 和 mysql-connector-java 5.1.41（由 Spring Boot 1.5.3 引入）在本地尝试了这个。我添加了一个文件/etc/my.cnf：

[mysqld]
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server = utf8

这确保 MySQL 设置为 UTF-8：

mysql> SHOW VARIABLES LIKE 'character_set%';
+--------------------------+-----------------------------------------------------------+
| Variable_name            | Value                                                     |
+--------------------------+-----------------------------------------------------------+
| character_set_client     | utf8                                                      |
| character_set_connection | utf8                                                      |
| character_set_database   | utf8                                                      |
| character_set_filesystem | binary                                                    |
| character_set_results    | utf8                                                      |
| character_set_server     | …

我试图将事件从MySQL传输到PostgreSQL，Apache Kafka.尽管插入和更新可以正常工作，但我不知道如何从中删除记录MySQL并将事件传输到PostgreSQL。

假定以下拓扑：

               +-------------+
               |             |
               |    MySQL    |
               |             |
               +------+------+
                      |
                      |
                      |
      +---------------v------------------+
      |                                  |
      |           Kafka Connect          |
      |  (Debezium, JDBC connectors)     |
      |                                  |
      +---------------+------------------+
                      |
                      |
                      |
                      |
              +-------v--------+
              |                |
              |   PostgreSQL   |
              |                |
              +----------------+

我正在使用以下docker镜像;

1. 阿帕奇·祖克珀
2. 阿帕奇-卡夫卡
3. Debezium / JDBC连接器

然后

# Start the application
export DEBEZIUM_VERSION=0.6
docker-compose up

# Start PostgreSQL connector
curl -i -X POST -H "Accept:application/json" -H  "Content-Type:application/json" …

我正在尝试将 mysql 数据源添加到我的 Wildfly(Jboss15.0.0) 服务器。但我遇到以下错误：

WFLYCTL0013: Operation ("add") failed - address: ([
    ("subsystem" => "datasources"),
    ("data-source" => "MySqlDS")
]) - failure description: {
    "WFLYCTL0412: Required services that are not installed:" => ["jboss.jdbc-driver.mysql"],
    "WFLYCTL0180: Services with missing/unavailable dependencies" => [
        "org.wildfly.data-source.MySqlDS is missing [jboss.jdbc-driver.mysql]",
        "jboss.driver-demander.java:/MySqlDS is missing [jboss.jdbc-driver.mysql]"
    ]
}
09:22:10,385 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([
    ("subsystem" => "datasources"),
    ("data-source" => "MySqlDS")
]) - failure description: {
    "WFLYCTL0412: Required services that are not installed:" …

我正在尝试在 macOS BigSur（在 M1 芯片 mac 上运行）上安装 mysqlclient 作为使用 MySQL DB 实现 django 项目的一部分。但是，我收到以下错误：

Collecting mysqlclient
  Using cached mysqlclient-2.0.3.tar.gz (88 kB)
Using legacy 'setup.py install' for mysqlclient, since package 'wheel' is not installed.
Installing collected packages: mysqlclient
    Running setup.py install for mysqlclient ... error
    ERROR: Command errored out with exit status 1:
     command: /Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/rs/vv5212l55ys7lk0vx4p87gxw0000gn/T/pip-install-73_o12ze/mysqlclient_23e4f763c971433c863260eda891b9d0/setup.py'"'"'; __file__='"'"'/private/var/folders/rs/vv5212l55ys7lk0vx4p87gxw0000gn/T/pip-install-73_o12ze/mysqlclient_23e4f763c971433c863260eda891b9d0/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/rs/vv5212l55ys7lk0vx4p87gxw0000gn/T/pip-record-jl3d35rj/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.9/include/python3.9/mysqlclient
         cwd: /private/var/folders/rs/vv5212l55ys7lk0vx4p87gxw0000gn/T/pip-install-73_o12ze/mysqlclient_23e4f763c971433c863260eda891b9d0/
    Complete output …