首页 数据库 mysql教程 MySQL-5.6+MySQL-Proxy构建主从复制与读写分离_MySQL

MySQL-5.6+MySQL-Proxy构建主从复制与读写分离_MySQL

Jun 01, 2016 pm 01:16 PM
mysql 用户

环境:

系统:CentOS-6.5

MySQL-master

IP:192.168.1.10

MySQL-slave

IP:192.168.1.11

Proxry

IP:192.167.1.12

——安装MySQL

1)创建mysql用户

[root@mater ~]# mysql -M -s /sbin/nologin mysql

[root@master ~]# yum install gcc gcc-c++ autoconf automake ncurses-devel libtool-ltdl-devel* libaio libaio-devel -y

3)解压安装MySQL [这里下载的是免安装版本]

[root@master linux]# tar fzvx mysql-5.6.16-linux-x86_64.tar.gz -C /usr/local/

[root@master linux]# mv mysql-5.6.16-linux-x86_64 mysql

[root@master local]# cd mysql/

[root@master mysql]# chown -R root:mysql .

[root@master mysql]# chown -R mysql:mysql data/

[root@master mysql]# ./scripts/mysql_install_db --user=mysql /

> --basedir=/usr/local/mysql/ /

> --datadir=/usr/local/mysql/data/

WARNING: The host 'master' could not be looked up with /usr/local/mysql//bin/resolveip.

This probably means that your libc libraries are not 100 % compatible

with this binary MySQL version. The MySQL daemon, mysqld, should work

normally with the exception that host name resolving will not work.

This means that you should use IP addresses instead of hostnames

when specifying MySQL privileges !

Installing MySQL system tables...2014-04-26 19:57:06 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).

2014-04-26 19:57:06 1258 [Note] InnoDB: Using atomics to ref count buffer pool pages

2014-04-26 19:57:06 1258 [Note] InnoDB: The InnoDB memory heap is disabled

2014-04-26 19:57:06 1258 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2014-04-26 19:57:06 1258 [Note] InnoDB: Compressed tables use zlib 1.2.3

2014-04-26 19:57:06 1258 [Note] InnoDB: Using Linux native AIO

2014-04-26 19:57:06 1258 [Note] InnoDB: Using CPU crc32 instructions

2014-04-26 19:57:06 1258 [Note] InnoDB: Initializing buffer pool, size = 128.0M

2014-04-26 19:57:07 1258 [Note] InnoDB: Completed initialization of buffer pool

2014-04-26 19:57:07 1258 [Note] InnoDB: The first specified data file ./ibdata1 did not exist: a new database to be created!

2014-04-26 19:57:07 1258 [Note] InnoDB: Setting file ./ibdata1 size to 12 MB

2014-04-26 19:57:07 1258 [Note] InnoDB: Database physically writes the file full: wait...

2014-04-26 19:57:07 1258 [Note] InnoDB: Setting log file ./ib_logfile101 size to 48 MB

2014-04-26 19:57:11 1258 [Note] InnoDB: Setting log file ./ib_logfile1 size to 48 MB

2014-04-26 19:57:15 1258 [Note] InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0

2014-04-26 19:57:15 1258 [Warning] InnoDB: New log files created, LSN=45781

2014-04-26 19:57:15 1258 [Note] InnoDB: Doublewrite buffer not found: creating new

2014-04-26 19:57:15 1258 [Note] InnoDB: Doublewrite buffer created

2014-04-26 19:57:15 1258 [Note] InnoDB: 128 rollback segment(s) are active.

2014-04-26 19:57:15 1258 [Warning] InnoDB: Creating foreign key constraint system tables.

2014-04-26 19:57:16 1258 [Note] InnoDB: Foreign key constraint system tables created

2014-04-26 19:57:16 1258 [Note] InnoDB: Creating tablespace and datafile system tables.

2014-04-26 19:57:16 1258 [Note] InnoDB: Tablespace and datafile system tables created.

2014-04-26 19:57:16 1258 [Note] InnoDB: Waiting for purge to start

2014-04-26 19:57:16 1258 [Note] InnoDB: 5.6.16 started; log sequence number 0

2014-04-26 19:57:16 1258 [Note] RSA private key file not found: /usr/local/mysql/data//private_key.pem. Some authentication plugins will not work.

2014-04-26 19:57:16 1258 [Note] RSA public key file not found: /usr/local/mysql/data//public_key.pem. Some authentication plugins will not work.

2014-04-26 19:57:17 1258 [Note] Binlog end

2014-04-26 19:57:17 1258 [Note] InnoDB: FTS optimize thread exiting.

2014-04-26 19:57:17 1258 [Note] InnoDB: Starting shutdown...

2014-04-26 19:57:19 1258 [Note] InnoDB: Shutdown completed; log sequence number 1625977

OK

Filling help tables...2014-04-26 19:57:19 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).

2014-04-26 19:57:19 1281 [Note] InnoDB: Using atomics to ref count buffer pool pages

2014-04-26 19:57:19 1281 [Note] InnoDB: The InnoDB memory heap is disabled

2014-04-26 19:57:19 1281 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins

2014-04-26 19:57:19 1281 [Note] InnoDB: Compressed tables use zlib 1.2.3

2014-04-26 19:57:19 1281 [Note] InnoDB: Using Linux native AIO

2014-04-26 19:57:19 1281 [Note] InnoDB: Using CPU crc32 instructions

2014-04-26 19:57:19 1281 [Note] InnoDB: Initializing buffer pool, size = 128.0M

2014-04-26 19:57:19 1281 [Note] InnoDB: Completed initialization of buffer pool

2014-04-26 19:57:19 1281 [Note] InnoDB: Highest supported file format is Barracuda.

2014-04-26 19:57:19 1281 [Note] InnoDB: 128 rollback segment(s) are active.

2014-04-26 19:57:19 1281 [Note] InnoDB: Waiting for purge to start

2014-04-26 19:57:19 1281 [Note] InnoDB: 5.6.16 started; log sequence number 1625977

2014-04-26 19:57:19 1281 [Note] RSA private key file not found: /usr/local/mysql/data//private_key.pem. Some authentication plugins will not work.

2014-04-26 19:57:19 1281 [Note] RSA public key file not found: /usr/local/mysql/data//public_key.pem. Some authentication plugins will not work.

2014-04-26 19:57:19 1281 [Note] Binlog end

2014-04-26 19:57:19 1281 [Note] InnoDB: FTS optimize thread exiting.

2014-04-26 19:57:19 1281 [Note] InnoDB: Starting shutdown...

2014-04-26 19:57:21 1281 [Note] InnoDB: Shutdown completed; log sequence number 1625987

OK

To start mysqld at boot time you have to copy

support-files/mysql.server to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !

To do so, start the server, then issue the following commands:

  /usr/local/mysql//bin/mysqladmin -u root password 'new-password'

  /usr/local/mysql//bin/mysqladmin -u root -h master password 'new-password'

Alternatively you can run:

  /usr/local/mysql//bin/mysql_secure_installation

which will also give you the option of removing the test

databases and anonymous user created by default.  This is

strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:

  cd . ; /usr/local/mysql//bin/mysqld_safe &

You can test the MySQL daemon with mysql-test-run.pl

  cd mysql-test ; perl mysql-test-run.pl

Please report any problems at http://bugs.mysql.com/

The latest information about MySQL is available on the web at

  http://www.mysql.com

Support MySQL by buying support/licenses at http://shop.mysql.com

New default config file was created as /usr/local/mysql//my.cnf and

will be used by default by the server when you start it.

You may edit this file to change server settings

WARNING: Default config file /etc/my.cnf exists on the system

This file will be read by default by the MySQL server

If you do not want to use this, either remove it, or use the

--defaults-file argument to mysqld_safe when starting the server.


4)复制配置文件并设置启动脚本

[root@node1 mysql]# cp my.cnf /etc/my.cnf

cp:是否覆盖"/etc/my.cnf"? y

[root@node1 mysql]# cp support-files/mysql.server /etc/init.d/mysqld[root@master mysql]# chmod +x /etc/init.d/mysqld

[root@master mysql]# chkconfig --add mysqld

[root@master mysql]# chkconfig mysqld on

[root@master mysql]# mkdir /usr/local/mysql/logs

[root@master mysql]# chown -R mysql:mysql /usr/local/mysql/logs/

[root@master mysql]# vi /etc/my.cnf

[mysqld]

#开启二进制日志

log-bin = /usr/local/mysql/logs/sql-bin

#唯一编号 [一般取IP的后两位]

server_id = 10

[root@master mysql]# vi /etc/profile.d/mysql.sh

PATH=$PATH:/usr/local/mysql/bin:

[root@master mysql]# source /etc/profile

[root@master mysql]# service mysqld start

Starting MySQL............ SUCCESS!

[root@master mysql]# netstat -antup |grep 3306

tcp        0      0 :::3306                    :::*                        LISTEN      1768/mysqld

#salve步骤一样,这里省略...

1)在master上的MySQL创建相关用户

[root@node1 mysql]# mysql -u root

Welcome to the MySQL monitor.  Commands end with ; or /g.

Your MySQL connection id is 1

Server version: 5.6.16-enterprise-commercial-advanced MySQL Enterprise Server - Advanced Edition (Commercial)

Copyright (c) 2000, 2014,Oracleand/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

mysql> grant replication slave on *.* to 'repl'@'192.168.1.11' identified by '12345';

Query OK, 0 rows affected (1.49 sec)

mysql> show master status;

+----------------+----------+--------------+------------------+-------------------+

| File          | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

+----------------+----------+--------------+------------------+-------------------+

| sql-bin.000001 |      120 |              |                  |                  |

+----------------+----------+--------------+------------------+-------------------+

1 row in set (0.12 sec)

[root@slave ~]# mysql -u root

Welcome to the MySQL monitor. Commands end with ; or /g.

Your MySQL connection id is 3

Server version: 5.5.25-log Source distribution

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

mysql> change master to[root@slave1 ~]# mysql -u root

Welcome to the MySQL monitor. Commands end with ; or /g.

Your MySQL connection id is 3

Server version: 5.5.25-log Source distribution

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

mysql> change master to

  -> master_host='192.168.1.254',

  -> master_user='repl',

  -> master_password='12345',

  -> master_log_file='sql-bin.000001',

  -> master_log_pos=120;

Query OK, 0 rows affected (0.25 sec)


4)启动slave检测是否同步成功

mysql> start slave;

Query OK, 0 rows affected (0.00 sec)

mysql> show slave status/G;

*************************** 1. row ***************************

              Slave_IO_State: Waiting for master to send event

                  Master_Host: 192.168.1.10

                  Master_User: repl

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: sql-bin.000001

          Read_Master_Log_Pos: 120

              Relay_Log_File: node2-relay-bin.000002

                Relay_Log_Pos: 281

        Relay_Master_Log_File: sql-bin.000001

            Slave_IO_Running: Yes        #为Yes说明成功

            Slave_SQL_Running: Yes        #为Yes说明成功

              Replicate_Do_DB:

          Replicate_Ignore_DB:

          Replicate_Do_Table:

      Replicate_Ignore_Table:

      Replicate_Wild_Do_Table:

  Replicate_Wild_Ignore_Table:

                  Last_Errno: 0

                  Last_Error:

                Skip_Counter: 0

          Exec_Master_Log_Pos: 120

              Relay_Log_Space: 454

              Until_Condition: None

              Until_Log_File:

                Until_Log_Pos: 0

          Master_SSL_Allowed: No

          Master_SSL_CA_File:

          Master_SSL_CA_Path:

              Master_SSL_Cert:

            Master_SSL_Cipher:

              Master_SSL_Key:

        Seconds_Behind_Master: 0

Master_SSL_Verify_Server_Cert: No

                Last_IO_Errno: 0

                Last_IO_Error:

              Last_SQL_Errno: 0

              Last_SQL_Error:

  Replicate_Ignore_Server_Ids:

            Master_Server_Id: 10

                  Master_UUID: 8c55a12b-cd22-11e3-bc81-0050563f4084

            Master_Info_File: /usr/local/mysql/data/master.info

                    SQL_Delay: 0

          SQL_Remaining_Delay: NULL

      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it

          Master_Retry_Count: 86400

                  Master_Bind:

      Last_IO_Error_Timestamp:

    Last_SQL_Error_Timestamp:

              Master_SSL_Crl:

          Master_SSL_Crlpath:

          Retrieved_Gtid_Set:

            Executed_Gtid_Set:

                Auto_Position: 0

1 row in set (0.05 sec)

ERROR:

No query specified

1)在master创建一个数据表

mysql> create database user;

Query OK, 1 row affected (0.10 sec)

mysql> create table user.test1(id int);

Query OK, 0 rows affected (0.80 sec)

mysql> insert into user.test1 values(1);

Query OK, 1 row affected (0.12 sec)

mysql> insert into user.test1 values(2);

Query OK, 1 row affected (0.15 sec)

mysql> select * from user.test1;

+------+

| id  |

+------+

|    1 |

|    2 |

+------+

2 rows in set (0.02 sec)

mysql> show databases;

+--------------------+

| Database          |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| test              |

| user              |

+--------------------+

5 rows in set (0.34 sec)

mysql> select * from user.test1;

+------+

| id  |

+------+

|    1 |

|    2 |

+------+

2 rows in set (0.04 sec)

#说明同步完成。

1)创建相关用户和组

[root@Proxy ~]# groupadd -g 3306 mysql-proxy

[root@Proxy ~]# useradd -u 3306 -g mysql-proxy -s /sbin/nologin -M mysql-proxy


2)编译安装mysql-proxy

[root@Proxy ~]# cd /Linux/

[root@Proxy Linux]# tar zfvx mysql-proxy-0.8.3-linux-rhel5-x86-64bit.tar.gz -C /usr/local/

[root@Proxy local]# mv mysql-proxy-0.8.3-linux-rhel5-x86-64bit/ mysql-proxy

[root@Proxy local]# cd mysql-proxy/

[root@Proxy mysql-proxy]# chown -R root:mysql-proxy .


3)设置mysql-proxy环境变量

[root@Proxy mysql-proxy]# vi /etc/profile.d/mysql-proxy.sh

export PATH=$PATH:/usr/local/mysql-proxy/bin

[root@Proxy mysql-proxy]# source /etc/profile

[root@Proxy mysql-proxy]# mysql-proxy --daemon --log-level=debug /

--log-file=/var/log/mysql-proxy.log --plugins="proxy" /

--proxy-backend-addresses="192.168.1.10:3306" /

--proxy-read-only-backend-addresses="192.168.1.11:3306"


5)查看是否启动[默认端口4040]

[root@Proxy mysql-proxy]# netstat -antup|grep 4040

tcp        0      0 0.0.0.0:4040                0.0.0.0:*                  LISTEN      1326/mysql-proxy


6)客户端测试连接[Proxy IP 地址]

[root@slave ~]# mysql -uuser -p -h192.168.1.12 --port=4040

Enter password:

Welcome to the MySQL monitor. Commands end with ; or /g.

Your MySQL connection id is 5

Server version: 5.5.25-log Source distribution

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.

mysql> show databases;

+--------------------+

| Database          |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| test              |

| user              |

+--------------------+

[root@Proxy mysql-proxy]# killall mysql-proxy

[root@Proxy mysql-proxy]# netstat -antup |grep 4040

[root@Proxy mysql-proxy]# cd /usr/local/mysql-proxy

[root@Proxy mysql-proxy]# cp lib/mysql-proxy/lua/admin.lua share/doc/mysql-proxy/

——启动mysql-proxy

[root@Proxy mysql-proxy]# mysql-proxy --daemon --log-level=debug /

--log-file=/var/log/mysql-proxy.log --plugins="proxy" /

--proxy-backend-addresses="192.168.1.10:3306"

--proxy-read-only-backend-addresses="192.168.1.11:3306" /

--proxy-lua-script="/usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua" /

--plugins=admin --admin-username="admin" /

--admin-password="admin" /

--admin-lua-script="/usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua"

[root@Proxy mysql-proxy]# mysql-proxy --daemon --log-level=debug /

--log-file=/var/log/mysql-proxy.log --plugins="proxy" /

--proxy-backend-addresses="192.168.1.252:3306"

--proxy-read-only-backend-addresses="192.168.1.254:3306" /

--proxy-lua-script="/usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua" /

--plugins=admin --admin-username="admin" /

--admin-password="admin" /

--admin-lua-script="/usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua"

客户端执行

[root@node1 /]# mysql -uuser -p12345 -h192.168.1.10 --port=4040 -e "select user from mysql.user;"

[root@node2 /]# mysql -uuser -p12345 -h192.168.1.11 --port=4040 -e "create database user1;"


10)优化配置启动脚本,并修连接端口

[root@Proxy mysql-proxy]# vi /etc/sysconfig/mysql-proxy

ADMIN_USER="admin"

ADMIN_PASSWORD="admin"

ADMIN_ADDRESS=""

ADMIN_LUA_SCRIPT="/usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua"

PROXY_ADDRESS="0.0.0.0:3306"

PROXY_USER="mysql-proxy"

PROXY_OPTIONS="--daemon --log-level=info --log-file="/var/log/mysql-proxy.log"

--plugins=proxy --plugins=admin --proxy-backend-addresses=192.168.1.12:3306

--proxy-read-only-backend-addresses=192.168.1.13:3306

--proxy-lua-script=/usr/local/mysql-proxy/share/doc/mysql-proxy/rw-splitting.lua"

[root@Proxy mysql-proxy]# vi /etc/init.d/mysql-proxy

#!/bin/bash

#

# mysql-proxy This script starts and stops the mysql-proxy daemon

#

# chkconfig: - 78 30

# processname: mysql-proxy

# description: mysql-proxy is a proxy daemon for mysql

# Source function library.

. /etc/rc.d/init.d/functions

prog="/usr/local/mysql-proxy/bin/mysql-proxy"

# Source networking configuration.

if [ -f /etc/sysconfig/network ]; then

. /etc/sysconfig/network

fi

# Check that networking is up.

[ ${NETWORKING} = "no" ] && exit 0

# Set default mysql-proxy configuration.

ADMIN_USER="admin"

ADMIN_PASSWD="admin"

ADMIN_LUA_SCRIPT="/usr/local/mysql-proxy/share/doc/mysql-proxy/admin.lua"

PROXY_OPTIONS="--daemon"

PROXY_PID=/var/run/mysql-proxy.pid

PROXY_USER="mysql-proxy"

# Source mysql-proxy configuration.

if [ -f /etc/sysconfig/mysql-proxy ]; then

. /etc/sysconfig/mysql-proxy

fi

RETVAL=0

start() {

echo -n $"Starting $prog: "

daemon $prog $PROXY_OPTIONS --pid-file=$PROXY_PID

--proxy-address="$PROXY_ADDRESS" --user=$PROXY_USER

--admin-username="$ADMIN_USER" --admin-lua-script="$ADMIN_LUA_SCRIPT"

--admin-password="$ADMIN_PASSWORD"

RETVAL=$?

echo

if [ $RETVAL -eq 0 ]; then

touch /var/lock/subsys/mysql-proxy

fi

}

stop() {

echo -n $"Stopping $prog: "

killproc -p $PROXY_PID -d 3 $prog

RETVAL=$?

echo

if [ $RETVAL -eq 0 ]; then

rm -f /var/lock/subsys/mysql-proxy

rm -f $PROXY_PID

fi

}

# See how we were called.

case "$1" in

start)

start

;;

stop)

stop

;;

restart)

stop

start

;;

condrestart|try-restart)

if status -p $PROXY_PIDFILE $prog >&/dev/null; then

stop

start

fi

;;

status)

status -p $PROXY_PID $prog

;;

*)

echo "Usage: $0 {start|stop|restart|reload|status|condrestart|try-restart}"

RETVAL=1

;;

esac

exit $RETVAL

MySQL Proxy 的详细介绍:请点这里
MySQL Proxy 的下载地址:请点这里

本站声明
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系admin@php.cn

热AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智能驱动的应用程序,用于创建逼真的裸体照片

AI Clothes Remover

AI Clothes Remover

用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool

Undress AI Tool

免费脱衣服图片

Clothoff.io

Clothoff.io

AI脱衣机

Video Face Swap

Video Face Swap

使用我们完全免费的人工智能换脸工具轻松在任何视频中换脸!

热工具

记事本++7.3.1

记事本++7.3.1

好用且免费的代码编辑器

SublimeText3汉化版

SublimeText3汉化版

中文版,非常好用

禅工作室 13.0.1

禅工作室 13.0.1

功能强大的PHP集成开发环境

Dreamweaver CS6

Dreamweaver CS6

视觉化网页开发工具

SublimeText3 Mac版

SublimeText3 Mac版

神级代码编辑软件(SublimeText3)

phpmyadmin怎么打开 phpmyadmin怎么打开 Apr 10, 2025 pm 10:51 PM

可以通过以下步骤打开 phpMyAdmin:1. 登录网站控制面板;2. 找到并点击 phpMyAdmin 图标;3. 输入 MySQL 凭据;4. 点击 "登录"。

MySQL:世界上最受欢迎的数据库的简介 MySQL:世界上最受欢迎的数据库的简介 Apr 12, 2025 am 12:18 AM

MySQL是一种开源的关系型数据库管理系统,主要用于快速、可靠地存储和检索数据。其工作原理包括客户端请求、查询解析、执行查询和返回结果。使用示例包括创建表、插入和查询数据,以及高级功能如JOIN操作。常见错误涉及SQL语法、数据类型和权限问题,优化建议包括使用索引、优化查询和分表分区。

MySQL的位置:数据库和编程 MySQL的位置:数据库和编程 Apr 13, 2025 am 12:18 AM

MySQL在数据库和编程中的地位非常重要,它是一个开源的关系型数据库管理系统,广泛应用于各种应用场景。1)MySQL提供高效的数据存储、组织和检索功能,支持Web、移动和企业级系统。2)它使用客户端-服务器架构,支持多种存储引擎和索引优化。3)基本用法包括创建表和插入数据,高级用法涉及多表JOIN和复杂查询。4)常见问题如SQL语法错误和性能问题可以通过EXPLAIN命令和慢查询日志调试。5)性能优化方法包括合理使用索引、优化查询和使用缓存,最佳实践包括使用事务和PreparedStatemen

为什么要使用mysql?利益和优势 为什么要使用mysql?利益和优势 Apr 12, 2025 am 12:17 AM

选择MySQL的原因是其性能、可靠性、易用性和社区支持。1.MySQL提供高效的数据存储和检索功能,支持多种数据类型和高级查询操作。2.采用客户端-服务器架构和多种存储引擎,支持事务和查询优化。3.易于使用,支持多种操作系统和编程语言。4.拥有强大的社区支持,提供丰富的资源和解决方案。

apache怎么连接数据库 apache怎么连接数据库 Apr 13, 2025 pm 01:03 PM

Apache 连接数据库需要以下步骤:安装数据库驱动程序。配置 web.xml 文件以创建连接池。创建 JDBC 数据源,指定连接设置。从 Java 代码中使用 JDBC API 访问数据库,包括获取连接、创建语句、绑定参数、执行查询或更新以及处理结果。

docker怎么启动mysql docker怎么启动mysql Apr 15, 2025 pm 12:09 PM

在 Docker 中启动 MySQL 的过程包含以下步骤:拉取 MySQL 镜像创建并启动容器,设置根用户密码并映射端口验证连接创建数据库和用户授予对数据库的所有权限

centos安装mysql centos安装mysql Apr 14, 2025 pm 08:09 PM

在 CentOS 上安装 MySQL 涉及以下步骤:添加合适的 MySQL yum 源。执行 yum install mysql-server 命令以安装 MySQL 服务器。使用 mysql_secure_installation 命令进行安全设置,例如设置 root 用户密码。根据需要自定义 MySQL 配置文件。调整 MySQL 参数和优化数据库以提升性能。

centos7如何安装mysql centos7如何安装mysql Apr 14, 2025 pm 08:30 PM

优雅安装 MySQL 的关键在于添加 MySQL 官方仓库。具体步骤如下:下载 MySQL 官方 GPG 密钥,防止钓鱼攻击。添加 MySQL 仓库文件:rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm更新 yum 仓库缓存:yum update安装 MySQL:yum install mysql-server启动 MySQL 服务:systemctl start mysqld设置开机自启动

See all articles