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本文主要给大家介绍MySQL主从复制类型及读写分离原理,其所涉及的东西,从理论知识来获悉,有很多书籍、文献可供大家参考,从现实意义来讲,创新互联累计多年的实践经验可分享给大家。
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amoeba服务器IP地址:192.168.144.160
master服务器IP地址:192.168.144.151
slave1服务器IP地址:192.168.144.163
slave2服务器IP地址:192.168.144.145
client客户端
[root@ameoba ~]# yum install ntp -y //安装时间服务器
[root@master1 ~]# vim /etc/ntp.conf
##在server下添加
server 127.127.144.0 //本地是时间源
fudge 127.127.144.0 stratum 8 //设置时间层级为8
[root@master1 ~]# systemctl start ntpd //启动时间服务
[root@master1 ~]# systemctl stop firewalld //关闭防火墙
[root@master1 ~]# setenforce 0
[root@slave1 ~]# yum install ntp ntpdate -y
[root@slave1 ~]# systemctl start ntpd
[root@slave1 ~]# systemctl stop firewalld
[root@slave1 ~]# setenforce 0
[root@slave1 ~]# /usr/sbin/ntpdate 192.168.144.151 //同步主服务器时间
29 Nov 16:58:43 ntpdate[4932]: the NTP socket is in use, exiting
[root@slave2 ~]# yum install ntp ntpdate -y
[root@slave2 ~]# systemctl start ntpd
[root@slave2 ~]# systemctl stop firewalld
[root@slave2 ~]# setenforce 0
[root@slave2 ~]# /usr/sbin/ntpdate 192.168.144.151
29 Nov 17:02:08 ntpdate[4850]: the NTP socket is in use, exiting
[root@master1 ~]# mkdir /abc //创建挂载点
[root@master1 ~]# mount.cifs //192.168.100.8/LNMP-C7 /abc/ //远程挂载
Password for root@//192.168.100.8/LNMP-C7:
[root@master1 ~]# cd /abc/
[root@master1 abc]# lsmysql-5.5.24
[root@master1 abc]# tar zxvf mysql-5.5.24.tar.gz -C /opt/ //解压
[root@master1 opt]# yum install -y \
> gcc gcc-c++ \
> ncurses \
> ncurese-devel \ //控制终端屏幕显示的库
> bison \ //语法分析
> make
> cmake //cmake工具
> libaio-devel //系统调用来实现异步IO
[root@slave1 opt]# useradd -s /sbin/nologin mysql //添加不可登录的mysql用户
[root@slave1 opt]# cd /opt/mysql-5.5.24/
[root@slave1 mysql-5.5.24]# mkdir /usr/local/mysql //创建安装目录
[root@slave1 mysql-5.5.24]# cmake \ //配置
> -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \ //安装路径
> -DMYSQL_UNIX_ADDR=/home/mysql/mysql.sock \ //sock文件路径
> -DDEFAULT_CHARSET=utf8 \ //字符集
> -DDEFAULT_COLLATION=utf8_general_ci \
> -DWITH_EXTRA_CHARSETS=all \
> -DWITH_MYISAM_STORAGE_ENGINE=1 \ //存储引擎
> -DWITH_INNOBASE_STORAGE_ENGINE=1 \
> -DWITH_MEMORY_STORAGE_ENGINE=1 \
> -DWITH_READLINE=1 \
> -DENABLED_LOCAL_INFILE=1 \
> -DMYSQL_DATADIR=/home/mysql \ //数据文件路径
> -DMYSQL_USER=mysql \ //用户
> -DMYSQL_TCP_PORT=3306 //端口
[root@slave1 mysql-5.5.24]# make && make install //编译及安装
[root@master1 mysql-5.5.24]# chown -R mysql.mysql /usr/local/mysql //设置mysql属主属组
[root@master1 mysql-5.5.24]# vim /etc/profile //配置环境变量便于系统识别
export PATH=$PATH:/usr/local/mysql/bin/
[root@master1 mysql-5.5.24]# source /etc/profile //刷新配置文件
[root@master1 mysql-5.5.24]# cp support-files/my-medium.cnf /etc/my.cnf //主配置文件
cp:是否覆盖"/etc/my.cnf"? yes
[root@master1 mysql-5.5.24]# cp support-files/mysql.server /etc/init.d/mysqld //启动文件
[root@master1 mysql-5.5.24]# chmod 755 /etc/init.d/mysqld //设置权限
[root@master1 mysql-5.5.24]# chkconfig --add /etc/init.d/mysqld //添加到service管理中
[root@master1 mysql-5.5.24]# chkconfig mysqld --level 35 on //开机自启动
[root@master1 mysql-5.5.24]# /usr/local/mysql/scripts/mysql_install_db \ //初始化数据库
> --user=mysql \
> --ldata=/var/lib/mysql \
> --basedir=/usr/local/mysql \
> --datadir=/home/mysql
[root@master1 mysql-5.5.24]# vim /etc/init.d/mysqld //编辑启动脚本文件
basedir=/usr/local/mysql //找到此处添加路径
datadir=/home/mysql
[root@master1 mysql-5.5.24]# service mysqld start //启动MySQL
Starting MySQL.. SUCCESS!
[root@master1 mysql-5.5.24]# mysqladmin -u root password 'abc123' //设置密码
[root@master1 mysql-5.5.24]# vim /etc/my.cnf
server-id = 11 //服务ID号
log-bin=master-bin //主服务器日志文件
log-slave-updates=true //从服务器更新二进制日志
[root@master1 mysql-5.5.24]# service mysqld restart //重启MySQL服务
Shutting down MySQL. SUCCESS!
Starting MySQL.. SUCCESS!
[root@master1 ~]# mysql -uroot -pabc123 //进入数据库
mysql> GRANT REPLICATION SLAVE ON *.* TO 'myslave'@'192.168.144.%' IDENTIFIED BY '123456'; //给从服务器提权复制权限,名为myslave密码123456对于144段网段
Query OK, 0 rows affected (0.01 sec)
mysql> FLUSH PRIVILEGES; ##刷新提权
Query OK, 0 rows affected (0.00 sec)
mysql> show master status; ##查看主服务器状态
+-------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------+----------+--------------+------------------+
| master-bin.000002 | 338 | | |
+-------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
[root@slave1 mysql-5.5.24]# vim /etc/my.cnf
server-id = 22 //另外一台为23
relay-log=relay-log-bin //从主服务器上同步日志文件记录到本地
relay-log-index=slave-relay-bin.index //定义relay-log的位置和名称
[root@slave1 mysql-5.5.24]# service mysqld restart //重新服务
Shutting down MySQL. SUCCESS!
Starting MySQL.. SUCCESS!
[root@slave1 mysql-5.5.24]# mysql -uroot -pabc123
mysql> change master to master_host='192.168.144.151',master_user='myslave',master_password='123456',master_log_file='master-bin.000002',master_log_pos=338; //同步主服务器二进制文件和位置使用授权的账号密码
Query OK, 0 rows affected (0.00 sec)
mysql> start slave; //开启同步
Query OK, 0 rows affected (0.01 sec)
mysql> show slave status\G; ##查看状态
Master_Log_File: master-bin.000002
Read_Master_Log_Pos: 338
Relay_Log_File: relay-log-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: master-bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
[root@slave2 mysql-5.5.24]# vim /etc/my.cnf
server-id = 23
relay-log=relay-log-bin //从主服务器上同步日志文件记录到本地
relay-log-index=slave-relay-bin.index //定义relay-log的位置和名称
[root@slave2 mysql-5.5.24]# service mysqld restart //重新服务
Shutting down MySQL. SUCCESS!
Starting MySQL.. SUCCESS!
[root@slave2 mysql-5.5.24]# mysql -uroot -pabc123
mysql> change master to master_host='192.168.144.151',master_user='myslave',master_password='123456',master_log_file='master-bin.000002',master_log_pos=338; //同步主服务器二进制文件和位置使用授权的账号密码
Query OK, 0 rows affected (0.00 sec)
mysql> start slave; //开启同步
Query OK, 0 rows affected (0.01 sec)
mysql> show slave status\G; //查看状态
Master_Log_File: master-bin.000002
Read_Master_Log_Pos: 338
Relay_Log_File: relay-log-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: master-bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
mysql> create database school; //创建school数据库
Query OK, 1 row affected (0.00 sec)
mysql> show databases; //查看数据库,实现主从同步
+--------------------+
| Database |
+--------------------+
| information_schema |
| #mysql50#.mozilla |
| mysql |
| performance_schema |
| school |
| test |
+--------------------+
6 rows in set (0.01 sec)
mysql> show databases; //查看数据库,实现主从同步
+--------------------+
| Database |
+--------------------+
| information_schema |
| #mysql50#.mozilla |
| mysql |
| performance_schema |
| school |
| test |
+--------------------+
6 rows in set (0.01 sec)
[root@amoeba ~]# systemctl stop firewalld.service //关闭防火墙
[root@amoeba ~]# setenforce 0
[root@amoeba ~]# mount.cifs //192.168.100.8/LNMP-C7 /mnt/ //挂载
Password for root@//192.168.100.8/LNMP-C7:
[root@amoeba ~]# cd /mnt/
[root@amoeba mnt]# ls
[root@amoeba mnt]# cp jdk-6u14-linux-x64.bin /usr/local/ //复制jdk二进制文件到/usr/local下
[root@amoeba mnt]# cd /usr/local/
[root@amoeba local]# ./jdk-6u14-linux-x64.bin //直接执行安装
Do you agree to the above license terms? [yes or no]
yes //选择yes进行安装
Press Enter to continue.....
##回车继续
[root@amoeba local]# mv jdk1.6.0_14/ /usr/local/jdk1.6 //简化文件名
[root@amoeba local]# vim /etc/profile //设置环境变量
...
export JAVA_HOME=/usr/local/jdk1.6 //家目录
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib //class环境变量
export PATH=$JAVA_HOME/lib:$JAVA_HOME/jre/bin/:$PATH:$HOME/bin //环境变量
export AMOEBA_HOME=/usr/local/amoeba //amoeba家目录
export PATH=$PATH:$AMOEBA_HOME/bin //环境变量
[root@amoeba local]# source /etc/profile //刷新配置文件
[root@amoeba local]# mkdir /usr/local/amoeba //创建amoeba目录
[root@amoeba local]# cd /mnt/
[root@amoeba mnt]# tar zxvf amoeba-mysql-binary-2.2.0.tar.gz -C /usr/local/amoeba //解压amoeba压缩包
[root@amoeba mnt]# chmod -R 755 /usr/local/amoeba/ //设置权限
[root@amoeba mnt]# /usr/local/amoeba/bin/amoeba //检查是否安装成功
amoeba start|stop
grant all on *.* to test@'192.168.144.%' identified by '123.com'; //给amoeba访问权限用户test密码123.com
[root@amoeba conf]# vim amoeba.xml //修改主配置文件
---30行--
amoeba //从服务器同步主服务器的用户密码
----32行---------
123456
---117-去掉注释-
master
master
slaves
:wq
[root@amoeba conf]# vim conf/dbServers.xml //配置数据库配置文件
--26-29--去掉注释--
test
123.com
-----42-主服务器地址---
192.168.144.151
--52-从服务器主机名-
192.168.144.163
##复制6行添加slave2
192.168.144.145
--65行左右--
--末尾--
slave1,slave2
[root@amoeba conf]# /usr/local/amoeba/bin/amoeba start& //开启amoeba服务
[root@amoeba ~]# netstat -anpt | grep java //开启另一个终端查看开启情况
tcp6 0 0 127.0.0.1:26268 :::* LISTEN 40925/java
tcp6 0 0 :::8066 :::* LISTEN 40925/java
tcp6 0 0 192.168.144.160:34090 192.168.144.151:3306 ESTABLISHED 40925/java
tcp6 0 0 192.168.144.160:33866 192.168.144.145:3306 ESTABLISHED 40925/java
tcp6 0 0 192.168.144.160:55984 192.168.144.163:3306 ESTABLISHED 40925/java
[root@client ~]# yum install mysql -y //安装测试数据库
[root@client ~]# mysql -u amoeba -p123456 -h 192.168.144.160 -P8066 //使用amoeba账户密码登录amoeba
MySQL [(none)]> show databases; //查看数据库
+--------------------+
| Database |
+--------------------+
| information_schema |
| #mysql50#.mozilla |
| mysql |
| performance_schema |
| school |
| test |
+--------------------+
6 rows in set (0.00 sec)
MySQL [(none)]> use school; //使用数据库
Database changed
MySQL [school]> create table info ( //创建表
-> id int(4) not null primary key,
-> name varchar(10) not null,
-> score decimal(4,1) not null);
Query OK, 0 rows affected (0.02 sec)
mysql> use school; ##使用数据库
Database changed
mysql> show tables; ##查看表
+------------------+
| Tables_in_school |
+------------------+
| info |
+------------------+
1 row in set (0.00 sec)
mysql> stop slave;
Query OK, 0 rows affected (0.01 sec)
MySQL [school]> insert into info (id,name,score) values (1,'zhangsan',88); //插入数据内容
Query OK, 1 row affected (0.03 sec)
mysql> select * from info;
+----+----------+-------+
| id | name | score |
+----+----------+-------+
| 1 | zhangsan | 88.0 |
+----+----------+-------+
1 row in set (0.00 sec)
mysql> select * from info; //slave上没有写入
Empty set (0.00 sec)
mysql> insert into info (id,name,score) values (2,'lisi',70);
Query OK, 1 row affected (0.00 sec)
mysql> insert into info (id,name,score) values (3,'wuwang',60);
Query OK, 1 row affected (0.00 sec)
MySQL [school]> select * from info; +----+--------+-------+ | id | name | score | +----+--------+-------+ | 3 | wuwang | 60.0 | +----+--------+-------+ 1 row in set (0.00 sec) MySQL [school]> select * from info; +----+------+-------+ | id | name | score | +----+------+-------+ | 2 | lisi | 70.0 | +----+------+-------+
1 row in set (0.00 sec)
看了以上介绍MySQL主从复制类型及读写分离原理,希望能给大家在实际运用中带来一定的帮助。本文由于篇幅有限,难免会有不足和需要补充的地方,大家可以继续关注创新互联行业资讯板块,会定期给大家更新行业新闻和知识,如有需要更加专业的解答,可在官网联系我们的24小时售前售后,随时帮您解答问题的。