Mysql 5.7.21单机多实例安装

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  1. 下载mysql 5.7 二制包
    [[email protected] ~]# wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.21-linux-glibc2.5-x86_64.tar.gz

  2. 解压 MySQL 5.7 二进制包到指定目录
    [[email protected] ~]# tar zxvf mysql-5.7.21-linux-glibc2.5-x86_64.tar.gz -C /usr/local/

  3. 创建 MySQL 软链接
    [[email protected] ~]# ln -s /usr/local/mysql-5.7.21-linux-glibc2.5-x86_64 /usr/local/mysql

  4. 创建 MySQL 用户
    [[email protected] ~]# useradd -r -s /sbin/nologin mysql

  5. 在 MySQL 二进制包目录中创建 mysql-files 目录 [MySQL 数据导入/导出数据专放目录]

    [[email protected] ~]# mkdir -v /usr/local/mysql/mysql-files 
    mkdir: created directory `/usr/local/mysql/mysql-files‘
  6. 创建多实例数据目录

    [[email protected] ~]# mkdir -vp /data/mysql_data{1..4} 
    mkdir: created directory `/data‘ 
    mkdir: created directory `/data/mysql_data1‘ 
    mkdir: created directory `/data/mysql_data2‘ 
    mkdir: created directory `/data/mysql_data3‘ 
    mkdir: created directory `/data/mysql_data4‘
  7. 修改 MySQL 二进制包目录的所属用户与所属组
    [[email protected] ~]# chown root.mysql -R /usr/local/mysql-5.7.21-linux-glibc2.5-x86_64

  8. 修改 MySQL 多实例数据目录与数据导入/导出专放目录的所属用户与所属组
    [[email protected] ~]# chown mysql.mysql -R /usr/local/mysql/mysql-files /data/mysql_data{1..4}

  9. 配置 MySQL 配置文件 /etc/my.cnf

    [mysqld_multi] 
    mysqld    = /usr/local/mysql/bin/mysqld  
    mysqladmin = /usr/local/mysql/bin/mysqladmin
    log        = /tmp/mysql_multi.log 
    [mysqld1] 
    # 设置数据目录 [多实例中一定要不同] 
    datadir = /data/mysql_data1
    # 设置sock存放文件名 [多实例中一定要不同] 
    socket = /tmp/mysql.sock1 
    # 设置监听开放端口 [多实例中一定要不同] 
    port = 3306 
    # 设置运行用户 
    user = mysql 
    # 关闭监控 
    performance_schema = off 
    # 设置innodb 缓存大小 
    innodb_buffer_pool_size = 32M 
    # 设置监听IP地址 
    bind_address = 0.0.0.0 
    # 关闭DNS 反向解析 
    skip-name-resolve = 0 
    [mysqld2] 
    datadir = /data/mysql_data2
    socket = /tmp/mysql.sock2 
    port = 3307 
    user = mysql 
    performance_schema = off 
    innodb_buffer_pool_size = 32M 
    bind_address = 0.0.0.0 
    skip-name-resolve = 0   
    [mysqld3] 
    datadir = /data/mysql_data3
    socket = /tmp/mysql.sock3 
    port = 3308 
    user = mysql 
    performance_schema = off 
    innodb_buffer_pool_size = 32M 
    bind_address = 0.0.0.0 
    skip-name-resolve = 0 
    [mysqld4] 
    datadir = /data/mysql_data4
    socket = /tmp/mysql.sock4 
    port = 3309 
    user = mysql 
    performance_schema = off 
    innodb_buffer_pool_size = 32M 
    bind_address = 0.0.0.0 
    skip-name-resolve = 0
  10. 初始化各个实例 [ 初始化完成后会自带随机密码在输出日志中 ]

    [[email protected] ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data1 
    [[email protected] ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data2 
    [[email protected] ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data3 
    [[email protected] ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data4
  11. 各实例开启 SSL 连接

    [[email protected] ~]# /usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data1 
    [[email protected] ~]# /usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data2 
    [[email protected] ~]# /usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data3 
    [[email protected] ~]# /usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data4
  12. 复制多实例脚本到服务管理目录下 [ /etc/init.d/ ]
    [[email protected] ~]# cp /usr/local/mysql/support-files/mysqld_multi.server /etc/init.d/mysqld_multi

  13. 添加脚本执行权限
    [[email protected] ~]# chmod +x /etc/init.d/mysqld_multi

  14. 添加进service服务管理
    [[email protected] ~]# chkconfig --add mysqld_multi

  15. 启动测试
  • 查个多实例状态

    [[email protected] ~]# /etc/init.d/mysqld_multi report 
    Reporting MySQL servers 
    MySQL server from group: mysqld1 is not running 
    MySQL server from group: mysqld2 is not running 
    MySQL server from group: mysqld3 is not running 
    MySQL server from group: mysqld4 is not running
  • 启动多实例
    [[email protected] ~]# /etc/init.d/mysqld_multi start

  • 查看多实例状态

    Reporting MySQL servers 
    MySQL server from group: mysqld1 is running 
    MySQL server from group: mysqld2 is running 
    MySQL server from group: mysqld3 is running 
    MySQL server from group: mysqld4 is running
  • 查看实例监听端口

    [[email protected] ~]# netstat -lntp | grep mysqld 
    tcp        0      0 0.0.0.0:3306        0.0.0.0:*                LISTEN      2673/mysqld        
    tcp        0      0 0.0.0.0:3307        0.0.0.0:*                LISTEN      2676/mysqld        
    tcp        0      0 0.0.0.0:3308        0.0.0.0:*                LISTEN      2679/mysqld        
    tcp        0      0 0.0.0.0:3309        0.0.0.0:*                LISTEN      2682/mysqld
  1. 连接测试
  • 实例1

    [[email protected] ~]# /usr/local/mysql/bin/mysql -S /tmp/mysql.sock1  -p‘z+Ilo*>s:3kw‘ 
    mysql: [Warning] Using a password on the command line interface can be insecure. 
    Welcome to the MySQL monitor.  Commands end with ; or \g. 
    Your MySQL connection id is 6 
    Server version: 5.7.18 
    Copyright (c) 2000, 2017, 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> set password = ‘123456‘; 
    Query OK, 0 rows affected (0.00 sec)
  • 实例2

    [[email protected] ~]# /usr/local/mysql/bin/mysql -S /tmp/mysql.sock2  -p‘b*AHUrTgu1rl‘ 
    mysql: [Warning] Using a password on the command line interface can be insecure. 
    Welcome to the MySQL monitor.  Commands end with ; or \g. 
    Your MySQL connection id is 7 
    Server version: 5.7.18 
    Copyright (c) 2000, 2017, 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> set password = ‘123456‘; 
    Query OK, 0 rows affected (0.00 sec)

    原文链接:https://www.linuxidc.com/Linux/2017-07/145343.htm











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