Mysql 主从复制配置步骤
Mysql 主从复制配置步骤 说明: 推荐主服务器和从服务器使用相同的版本 。 在许多情况下,从新的主服务器向旧的从服务器复制将会失败。一般原则, 版本较低的 master 可以和较高版本的 slave 一起可以正常工作 ,但不能反过来。 1. 在 master 上建立有复制权
Mysql 主从复制配置步骤
说明:
推荐主服务器和从服务器使用相同的版本。在许多情况下,从新的主服务器向旧的从服务器复制将会失败。一般原则,版本较低的master可以和较高版本的slave一起可以正常工作,但不能反过来。
1.在master上建立有复制权限的账户
GRANT REPLICATION SLAVE,RELOAD,SUPER ON *.* TO backup@60.*.*.* IDENTIFIED BY 'slavepass';
FLUSH PRIVILEGES ;
2.用mysqldump出master上的数据库并导入到slave上
master# mysqldump -uroot -p high>high.sql
3.在master 的my.cnf配置文件的replication部分添加:
server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
binlog_do_db = high
binlog_ignore_db = mysql
重启mysql
# /etc/init.d/mysql restart
查看master的状态
mysql> show master status;
4.在slave 的my.cnf配置文件的replication部分添加:
server-id = 2
master-host = 60.*.*.*
master-user = backup
master-password = slavepass
master-port = 3300
replicate-do-db = high
replicate-ignore-db = mysql
重启mysql
# /etc/init.d/mysql restart
查看slave的状态
mysql> show slave status;
在slave上手动设置master:
查看master的信息:
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 2244 | high | mysql |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
停掉slave:
mysql> stop slave;
在slave上执行如下命令:
CHANGE MASTER TO MASTER_HOST='60.*.*.*', MASTER_PORT=3300,
MASTER_USER='backup', MASTER_PASSWORD='slavepass',MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=2244;
启动slave:
mysql> start slave;
5.在master的high库中创建、删除表,观察slave上是否也成功创建、删除表。
6.在slave上给high用户授权,以便在master出现问题时可以临时切到slave上。
GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP ON high.* TO 'high'@'60.*.*.%' IDENTIFIED BY 'high';
FLUSH PRIVILEGES;
7.问题
发现:Slave_IO_Running No
原因:没有在master对复制账号授权。按第一步操作即可解决。
8.主从服务器的复制状态查看命令:
SHOW PROCESSLIST;
SHOW MASTER STATUS;
show slave status;

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



You can open phpMyAdmin through the following steps: 1. Log in to the website control panel; 2. Find and click the phpMyAdmin icon; 3. Enter MySQL credentials; 4. Click "Login".

MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.

Redis uses a single threaded architecture to provide high performance, simplicity, and consistency. It utilizes I/O multiplexing, event loops, non-blocking I/O, and shared memory to improve concurrency, but with limitations of concurrency limitations, single point of failure, and unsuitable for write-intensive workloads.

MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen

MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.

Effective monitoring of Redis databases is critical to maintaining optimal performance, identifying potential bottlenecks, and ensuring overall system reliability. Redis Exporter Service is a powerful utility designed to monitor Redis databases using Prometheus. This tutorial will guide you through the complete setup and configuration of Redis Exporter Service, ensuring you seamlessly build monitoring solutions. By studying this tutorial, you will achieve fully operational monitoring settings

The methods for viewing SQL database errors are: 1. View error messages directly; 2. Use SHOW ERRORS and SHOW WARNINGS commands; 3. Access the error log; 4. Use error codes to find the cause of the error; 5. Check the database connection and query syntax; 6. Use debugging tools.

Apache connects to a database requires the following steps: Install the database driver. Configure the web.xml file to create a connection pool. Create a JDBC data source and specify the connection settings. Use the JDBC API to access the database from Java code, including getting connections, creating statements, binding parameters, executing queries or updates, and processing results.
