MySQL多实例安装部署

• 解压 MySQL 5.7 二进制包到指定目录 [root@MySQL ~]# tar zxvf mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz -C /usr/local/

• 创建 MySQL 软链接 [root@MySQL ~]#mv /usr/local/mysql-5.7.18-linux-glibc2.5-x86_64 /usr/local/mysql

• 创建 MySQL 用户 [root@MySQL ~]#groupadd -r mysql [root@MySQL ~]# useradd -r -g mysql -s /bin/false -M mysql

• 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] [root@MySQL ~]# mkdir -v /usr/local/mysql/mysql-files mkdir: created directory `/usr/local/mysql/mysql-files'

• 创建多实例数据目录 [root@MySQL ~]# 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'

• 修改 MySQL 二进制包目录的所属用户与所属组 1 [root@MySQL ~]# chown root.mysql -R /usr/local/mysql

• 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 [root@MySQL ~]# chown mysql.mysql -R /usr/local/mysql/mysql-files /data/mysql_data{1..4}

• 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

• 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 ] [root@MySQL ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data1 [root@MySQL ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data2 [root@MySQL ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data3 [root@MySQL ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data4

• 各实例开启 SSL 连接 [root@MySQL ~]# /usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data1 [root@MySQL ~]# /usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data2 [root@MySQL ~]# /usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data3 [root@MySQL ~]# /usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data4

*修改环境变量 echo "export PATH=$PATH:/usr/local/mysql/bin" >> /etc/profile source /etc/profile

• 复制多实例脚本到服务管理目录下 [ /etc/init.d/ ] [root@MySQL ~]# cp /usr/local/mysql/support-files/mysqld_multi.server /etc/init.d/mysqld_multi

• 添加脚本执行权限 [root@MySQL ~]# chmod +x /etc/init.d/mysqld_multi

• 添加进service服务管理 [root@MySQL ~]# chkconfig --add mysqld_multi

5. 启动测试

• 查个多实例状态 [root@MySQL ~]# /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 [root@MySQL ~]# /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 [root@MySQL ~]# 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

6. 连接测试