mysql多实例布局

2024-07-24 12:32:32

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  mysql多实例部署;

1.修改my.cnf
[mysql]

[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin = /usr/local/mysql/bin/mysqladmin
user =
password =

[mysqld1]
#explicit_defaults_for_timestamp=true
port = 3306
skip-name-resolve
server_id=1
datadir=/data/master
max_connections=3000
slow-query-log=on ##开启慢查询
slow-query-log-file=/var/log/mysql1/mysql-slow-queries.log
long_query_time=3
##开启二进制文件
log-bin=/data/master_binlog/mysql1_bin.log
log-bin-index=/data/master_binlog/binlog.index
binlog-do-db=ibuy
innodb_buffer_pool_size=2G #缓存
innodb_log_file_size = 512M
innodb_log_files_in_group = 3
innodb_additional_mem_pool_size = 64M
socket=/var/lib/mysql/mysql3306.sock
pid-file=/data/master/mysql.pid
#query_cache_size = 128M #查询缓存，合适查操作比较多的数据库
symbolic-links=0
sql_mode=STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION
log-error=/var/log/mysql1/mysqld.log
user=mysql

[mysqld2]
port=3307
server_id=2
explicit_defaults_for_timestamp=true
skip-name-resolve
datadir=/data/slave
max_connections=3000
slow-query-log=on ##开启慢查询
slow-query-log-file=/var/log/mysql2/mysql-slow-queries.log
long_query_time=3
log-bin=/data/slave_binlog/mysql_bin.log ##开启二进制文件
log-bin-index=/data/slave_binlog/binlog.index
binlog-do-db=ibuy
innodb_buffer_pool_size=3G #缓存
innodb_log_file_size = 512M
innodb_log_files_in_group = 3
innodb_additional_mem_pool_size = 64M
socket=/var/lib/mysql/mysql3307.sock
pid-file=/data/slave/mysql.pid
#query_cache_size =512M #查询缓存，合适查操作比较多的数据库
symbolic-links=0
sql_mode=STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION
log-error=/var/log/mysql2/mysqld.log
user=mysql

[mysqld_safe]
#max_allowed_packet=20480
#log-error=/var/log/mysql/mysqld.log
#pid-file=/var/run/mysqld/mysqld.pid

2.创建数据目录

mkdir -p /data/master

mkdir -p /data/slave

mkdir -p /data/master_binlog

mkdir -p /data/slave_binlog

mkdir /var/log/mysql1

mkdir /var/log/mysql2

chown mysql.mysql /data/master -R

chown mysql.mysql /data/slave -R

chmod 777 /var/log/mysql1

chmod 777 /var/log/mysql2

chmod 777 /var/lib/mysql

3.初始化DB
/usr/local/mysql/scripts/mysql_install_db --datadir=/data/master
/usr/local/mysql/scripts/mysql_install_db --datadir=/data/slave
4. 安装工具

cp /usr/local/mysql/bin/my_print_defaults /usr/bin/

5.修改环境变量
#vim /etc/profile
PATH=$PATH:/usr/local/mysql/bin
export PATH

1.mysql启动

mysqld_multi start 1 启动实例1

mysqld_multi start 1-2 启动实例1,2

2.命令行登陆

mysql -u your_user -p your_password -P3307 -S /tmp/mysql3307.sock

由于涉及权限问题，mysqld_multi不能控制关闭mysql多实例，自己写了个关闭脚本

#!/bin/bash

user=""

password=""

read -p "Please input mysqld ID 1-2:" ID

if [ "$ID" == "1" ]; then

#read -p "Please input mysqld port number 3306-3307:" port

/usr/local/mysql/bin/mysqladmin -u$user -p$password -S /var/lib/mysql/mysql3306.sock shutdown && echo "close mysqld master successful"

elif [ "$ID" == "2" ]; then

/usr/local/mysql/bin/mysqladmin -u$user -p$password -S /var/lib/mysql/mysql3307.sock shutdown && echo "close mysqld slave successful"

else

echo "Please input mysqld ID 1-2:"

fi

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