Home Database Mysql Tutorial MYSQL-数据同步,双向热备(转)

MYSQL-数据同步,双向热备(转)

Jun 07, 2016 pm 04:26 PM
Synchronize number data

MYSQL----数据同步,双向热备(转) 原文地址:http://www.iteye.com/topic/153875 ? 1、简要介绍:mysql从3.23.15版本以后提供数据库复制功能。利用该功能可以实现两个数据库同步,主从模式(A-B),互相备份模式(A=B)的功能。 mysql数据库同步复制功能的设置都

MYSQL----数据同步,双向热备(转)

原文地址:http://www.iteye.com/topic/153875

?

1、简要介绍:mysql从3.23.15版本以后提供数据库复制功能。利用该功能可以实现两个数据库同步,主从模式(A->B),互相备份模式(AB)的功能。
mysql数据库同步复制功能的设置都在mysql的配置文件中体现。在linux环境下的配置文件一般在/etc/mysql/my.cnf或者在mysql用户的home目录下的my.cnf,笔者的my.cnf则在/etc/my.cnf;windows环境下则可到mysql安装路径下找到my.ini。

?

2、下面我们来看看如何配置数据同步(A->B):
(笔者mysql版本 5.0.26)
假设数据库A为主机(将向B提供同步服务,即B中的数据来自A):
A机器:
IP = 192.168.1.101
B机器:
IP = 192.168.1.102

?

(1).在A机器中有数据库如下:

//数据库A

CREATE DATABASE backup_db;
USE backup_db;
CREATE TABLE `backup_table` (
? `id` int(11) NOT NULL auto_increment,
? `name` varchar(20) character set utf8 NOT NULL,
? `sex` varchar(2) character set utf8 NOT NULL,
? PRIMARY KEY? (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

#A机器的my.cnf(或my.ini)中应该配置:

server-id=1
log-bin=c:\mysqlback #同步事件的日志记录文件
binlog-do-db=backup_db #提供数据同步服务的数据库

?

(2).在B机器中有数据库如下:

//数据库B

CREATE DATABASE backup_db;
USE backup_db;
CREATE TABLE `backup_table` (
? `id` int(11) NOT NULL auto_increment,
? `name` varchar(20) character set utf8 NOT NULL,
? `sex` varchar(2) character set utf8 NOT NULL,
? PRIMARY KEY? (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

注:数据库A和B的数据库结构一定要相同,否则无法构成同步。

#B机器的my.cnf(或my.ini)中应该配置:

server-id=2
master-host=192.168.1.101 #主机A的地址
master-user=ym #主机A提供给B的用户,该用户中需要包括数据库backup_db的权限
master-password=ym #访问密码
master-port=3306 #端口,主机的MYSQL端口
master-connect-retry=60 #重试间隔60秒
replicate-do-db=backup_db #同步的数据库

?

(3).完成了以上配置之后,将A的mysql数据的权限给B。
A机器:

mysql>GRANT FILE ON *.* TO ym@'192.168.1.102' IDENTIFIEDBY ‘ym’;

?

(4).重启AB数据库,后:
B机器:

mysql>slave start;

查看同步配置情况
A机器:

mysql>show master status;

B机器:

mysql>show slave status;

?

(5).在A中的backup_db.backup_table表中插入一些数据,查看B中的backup_db.backup_table表是否同步了数据改动。如果没有看到同步数据结果,即同步不成功,请查看错误(如下)。
当有错误产生时*.err日志文件(可到mysql安装目录下找),同步的线程退出。当纠正错误后重复步骤(4)。

?

3、实现双向热备(AB):
将以上的(1)-(5)步骤按A-B双向配置即可。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Open source! Beyond ZoeDepth! DepthFM: Fast and accurate monocular depth estimation! Open source! Beyond ZoeDepth! DepthFM: Fast and accurate monocular depth estimation! Apr 03, 2024 pm 12:04 PM

0.What does this article do? We propose DepthFM: a versatile and fast state-of-the-art generative monocular depth estimation model. In addition to traditional depth estimation tasks, DepthFM also demonstrates state-of-the-art capabilities in downstream tasks such as depth inpainting. DepthFM is efficient and can synthesize depth maps within a few inference steps. Let’s read about this work together ~ 1. Paper information title: DepthFM: FastMonocularDepthEstimationwithFlowMatching Author: MingGui, JohannesS.Fischer, UlrichPrestel, PingchuanMa, Dmytr

Use ddrescue to recover data on Linux Use ddrescue to recover data on Linux Mar 20, 2024 pm 01:37 PM

DDREASE is a tool for recovering data from file or block devices such as hard drives, SSDs, RAM disks, CDs, DVDs and USB storage devices. It copies data from one block device to another, leaving corrupted data blocks behind and moving only good data blocks. ddreasue is a powerful recovery tool that is fully automated as it does not require any interference during recovery operations. Additionally, thanks to the ddasue map file, it can be stopped and resumed at any time. Other key features of DDREASE are as follows: It does not overwrite recovered data but fills the gaps in case of iterative recovery. However, it can be truncated if the tool is instructed to do so explicitly. Recover data from multiple files or blocks to a single

One or more items in the folder you synced do not match Outlook error One or more items in the folder you synced do not match Outlook error Mar 18, 2024 am 09:46 AM

When you find that one or more items in your sync folder do not match the error message in Outlook, it may be because you updated or canceled meeting items. In this case, you will see an error message saying that your local version of the data conflicts with the remote copy. This situation usually happens in Outlook desktop application. One or more items in the folder you synced do not match. To resolve the conflict, open the projects and try the operation again. Fix One or more items in synced folders do not match Outlook error In Outlook desktop version, you may encounter issues when local calendar items conflict with the server copy. Fortunately, though, there are some simple ways to help

Google is ecstatic: JAX performance surpasses Pytorch and TensorFlow! It may become the fastest choice for GPU inference training Google is ecstatic: JAX performance surpasses Pytorch and TensorFlow! It may become the fastest choice for GPU inference training Apr 01, 2024 pm 07:46 PM

The performance of JAX, promoted by Google, has surpassed that of Pytorch and TensorFlow in recent benchmark tests, ranking first in 7 indicators. And the test was not done on the TPU with the best JAX performance. Although among developers, Pytorch is still more popular than Tensorflow. But in the future, perhaps more large models will be trained and run based on the JAX platform. Models Recently, the Keras team benchmarked three backends (TensorFlow, JAX, PyTorch) with the native PyTorch implementation and Keras2 with TensorFlow. First, they select a set of mainstream

The vitality of super intelligence awakens! But with the arrival of self-updating AI, mothers no longer have to worry about data bottlenecks The vitality of super intelligence awakens! But with the arrival of self-updating AI, mothers no longer have to worry about data bottlenecks Apr 29, 2024 pm 06:55 PM

I cry to death. The world is madly building big models. The data on the Internet is not enough. It is not enough at all. The training model looks like "The Hunger Games", and AI researchers around the world are worrying about how to feed these data voracious eaters. This problem is particularly prominent in multi-modal tasks. At a time when nothing could be done, a start-up team from the Department of Renmin University of China used its own new model to become the first in China to make "model-generated data feed itself" a reality. Moreover, it is a two-pronged approach on the understanding side and the generation side. Both sides can generate high-quality, multi-modal new data and provide data feedback to the model itself. What is a model? Awaker 1.0, a large multi-modal model that just appeared on the Zhongguancun Forum. Who is the team? Sophon engine. Founded by Gao Yizhao, a doctoral student at Renmin University’s Hillhouse School of Artificial Intelligence.

Slow Cellular Data Internet Speeds on iPhone: Fixes Slow Cellular Data Internet Speeds on iPhone: Fixes May 03, 2024 pm 09:01 PM

Facing lag, slow mobile data connection on iPhone? Typically, the strength of cellular internet on your phone depends on several factors such as region, cellular network type, roaming type, etc. There are some things you can do to get a faster, more reliable cellular Internet connection. Fix 1 – Force Restart iPhone Sometimes, force restarting your device just resets a lot of things, including the cellular connection. Step 1 – Just press the volume up key once and release. Next, press the Volume Down key and release it again. Step 2 – The next part of the process is to hold the button on the right side. Let the iPhone finish restarting. Enable cellular data and check network speed. Check again Fix 2 – Change data mode While 5G offers better network speeds, it works better when the signal is weaker

The U.S. Air Force showcases its first AI fighter jet with high profile! The minister personally conducted the test drive without interfering during the whole process, and 100,000 lines of code were tested for 21 times. The U.S. Air Force showcases its first AI fighter jet with high profile! The minister personally conducted the test drive without interfering during the whole process, and 100,000 lines of code were tested for 21 times. May 07, 2024 pm 05:00 PM

Recently, the military circle has been overwhelmed by the news: US military fighter jets can now complete fully automatic air combat using AI. Yes, just recently, the US military’s AI fighter jet was made public for the first time and the mystery was unveiled. The full name of this fighter is the Variable Stability Simulator Test Aircraft (VISTA). It was personally flown by the Secretary of the US Air Force to simulate a one-on-one air battle. On May 2, U.S. Air Force Secretary Frank Kendall took off in an X-62AVISTA at Edwards Air Force Base. Note that during the one-hour flight, all flight actions were completed autonomously by AI! Kendall said - "For the past few decades, we have been thinking about the unlimited potential of autonomous air-to-air combat, but it has always seemed out of reach." However now,

Alibaba 7B multi-modal document understanding large model wins new SOTA Alibaba 7B multi-modal document understanding large model wins new SOTA Apr 02, 2024 am 11:31 AM

New SOTA for multimodal document understanding capabilities! Alibaba's mPLUG team released the latest open source work mPLUG-DocOwl1.5, which proposed a series of solutions to address the four major challenges of high-resolution image text recognition, general document structure understanding, instruction following, and introduction of external knowledge. Without further ado, let’s look at the effects first. One-click recognition and conversion of charts with complex structures into Markdown format: Charts of different styles are available: More detailed text recognition and positioning can also be easily handled: Detailed explanations of document understanding can also be given: You know, "Document Understanding" is currently An important scenario for the implementation of large language models. There are many products on the market to assist document reading. Some of them mainly use OCR systems for text recognition and cooperate with LLM for text processing.

See all articles