单机多实例MYSQL主从复制

　　今天有时间写写，不然心坎里总有点不爽。单机多实例一直都是屌丝的处事风格。。。

实验环境

　　RHEL6.5　　

　　172.24.0.130  3306

　　172.24.0.130  3307

01、本次采用的MYSQL二进制快速安装

下载地址：

https://dev.mysql.com/downloads/mysql/

http://pan.baidu.com/s/1qYI0ybq

http://pan.baidu.com/s/1pLHM2TH 密码: pg5t

#截图操作

#根据需求选择对应的版本

02、解压并建立数据目录

tar zxf xxx.tar.gz    -C /tmp

mkdir  -p {data_3306,data3307}     #存放数据

mkdir  conf                                    #放my.cnf

03、修改配置文件my.cnf

#3306my.cnf

[client]
default-character-set=utf8    #客户端连接编码

[mysql]
auto-rehash                   #客户端tab补全
default-character-set=utf8    #编码

[mysqld]
user=mysql                    #运行账户
port=3306                     #定义端口
log-bin=mysql-bin             #开启二进制日志
server-id=001                 #定义服务ID

max_allowed_packet=50M        ###最大
wait_timeout=             ###等待超时默认s
interactive_timeout=      ###活动超时

innodb_buffer_pool_size = 128M
join_buffer_size = 128M
sort_buffer_size = 2M
read_rnd_buffer_size = 2M

basedir=/tmp/mysql_mulit                 #MYSQL根目录
datadir=/tmp/mysql_mulit/data_3306       #MYSQL数据存放目录
socket=/tmp/3306_mysql.sock              #套接字

init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8                #定义数据库默认字符 server\collation
collation-server=utf8_unicode_ci
skip-character-set-client-handshake

symbolic-links=

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

lower_case_table_names = 0             #对表的大小写不敏感
[mysqld_safe]
log-error=/tmp/3306_err.log              #错误日志
pid-file=/tmp/mysql_mulit/data_3306/mysqld.pid   #pid,多协议通信 tcp/sock

3307my.cnf

[client]
default-character-set=utf8    #客户端连接编码

[mysql]
auto-rehash                   #客户端tab补全
default-character-set=utf8    #编码

[mysqld] 
user=mysql
port=                     #定义端口
log-bin=mysql-bin             #开启二进制日志
server-id=                 #定义服务ID

max_allowed_packet=50M        ###最大
wait_timeout=             ###等待超时默认s
interactive_timeout=      ###活动超时

innodb_buffer_pool_size = 128M
join_buffer_size = 128M
sort_buffer_size = 2M
read_rnd_buffer_size = 2M

basedir=/tmp/mysql_mulit                 #MYSQL根目录
datadir=/tmp/mysql_mulit/data_3307       #MYSQL数据存放目录
socket=/tmp/3307_mysql.sock              #套接字

init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8                #定义数据库默认字符 server\collation
collation-server=utf8_unicode_ci
skip-character-set-client-handshake

symbolic-links=

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES 

lower_case_table_names =              #对表的大小写不敏感

[mysqld_safe]
log-error=/tmp/3307_err.log              #错误日志
pid-file=/tmp/mysql_mulit/data_3307/mysqld.pid   #pid,多协议通信 tcp/sock

04、初始化数据库

./scripts/mysql_install_db  --defaults-file=conf/3306my.cnf

./scripts/mysql_install_db  --defaults-file=conf/3306my.cnf

05、启动数据库

./bin/mysqld_safe --defaults-file=conf/3306my.cnf &

./bin/mysqld_safe --defaults-file=conf/3307my.cnf &

06、初始化root密码

./bin/mysqladmin   -P 3306 -u root password '123123'

./bin/mysqladmin   -P 3307 -u root password '123123'

07、master主机设置（3306）

建立从复制账号

grant replication slave on *.* to 'mysync'@'%' identified by '123456';             #所有IP
grant replication slave on *.* to 'mysync'@'localhost' identified by '123456';   #127.0.0.1
grant replication slave on *.* to 'mysync'@'zabibx' identified by '123456';      #172.24.0.130, zabbix是主机名

查看Master信息

mysql> show master status;  #目的跟slave对上口径
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000003 |      |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+

08、Slave从主机设置（3307）

进入mysql与master主机建立连接

change master to master_host='172.24.0.130',master_port=3306,master_user='mysync',master_password='123456', master_log_file='mysql-bin.000003',master_log_pos=541;

show slave status\G；

 start  slave;  #启动从主机    stop slave；停止从主机

#截图中两个yes说明从机已经连接到主机