简介：
配置要求：Linux(CentOS7) 五台
原理图：一台变形虫（调度器）一台客户端、三台MySQL服务器（一主二从）
五台服务器IP我已经设定好了(五台服务器都设置成NAT模式：需要在线安装包)
变形虫amoeba：192.168.120.128
主服务器master：192.168.120.129
从服务器slave01：192.168.120.130
从服务器slave02：192.168.120.131
客户端client：192.168.120.132
实验要求的安装包在百度云盘中：
MySQL5.5压缩包：链接：https://pan.baidu.com/s/1U6XGW1s6tuOvExPYQ7hAfQ 密码：sffl
amoeba压缩包：链接：https://pan.baidu.com/s/1zdYScsdEUpPlOfloA5vUVA 密码：o32b
jdk压缩包：链接：https://pan.baidu.com/s/1QeRWpSCGcLXeRuW8lV5DUA 密码：zbdz
具体实验步骤：
在主服务器master上操作
第一步关闭防火墙：
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# setenforce 0
因为系统盘自带ntp，所以不用我们装直接进入配置文件（如果没装用yum install ntp -y自动装）
[root@localhost ~]# vim /etc/ntp.conf
在配置文件最下方插入下面两条语句
server 127.127.120.0 //本地是时钟源//
fudge 127.127.120.0 stratum 8 //设置时间层级为8//
设置完成后，保存退出开启服务
[root@localhost ~]# systemctl start ntpd.service
到从服务器1上操作：
关闭防火墙
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# setenforce 0
[root@localhost ~]# systemctl start ntpd.service
[root@localhost ~]# //usr/sbin/ntpdate 192.168.120.129
9 Sep 09:52:41 ntpdate[3062]: the NTP socket is in use, exiting
主服务器的时间源同步过去了
从2服务器进行从1服务器的同样操作，关闭防火墙，开启服务，进行时间同步
===================================================================================
安装MySQL（在三台服务器上安装MySQL：主1和从1从2）
创建挂载点abc
[root@localhost ~]# mkdir /abc
从宿主机192.168.100.1上挂载MySQL5.5的安装包
[root@localhost ~]# mount.cifs //192.168.100.1/mysql5.5 /abc
将安装包解压到opt目录中
[root@localhost LAMP]# tar zxvf mysql-5.5.24.tar.gz -C /opt/
安装编译环境
[root@localhost LAMP]# cd /opt/mysql-5.5.24/
[root@localhost mysql-5.5.24]# yum install gcc gcc-c++ cmake –y
安装开发包
[root@localhost mysql-5.5.24]# yum install ncurses-devel bison libaio-devel –y
安装完成后进行编译：
[root@localhost mysql-5.5.24]# useradd -s /sbin/nologin mysql
[root@localhost mysql-5.5.24]# mkdir /usr/local/mysql
直接粘贴下面语句进行编译
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql
-DMYSQL_UNIX_ADDR=/home/mysql/mysql.sock
-DDEFAULT_CHARSET=utf8
-DDEFAULT_COLLATION=utf8_general_ci
-DWITH_EXTRA_CHARSETS=all
-DWITH_MYISAM_STORAGE_ENGINE=1
-DWITH_INNOBASE_STORAGE_ENGINE=1
-DWITH_MEMORY_STORAGE_ENGINE=1
-DWITH_READLINE=1
-DENABLED_LOCAL_INFILE=1
-DMYSQL_DATADIR=/home/mysql
-DMYSQL_USER=mysql
-DMYSQL_TCP_PORT=3306
[root@localhost mysql-5.5.24]# make
[root@localhost mysql-5.5.24]# make install
等待安装100%完成
（以上步骤三台都要同样操作）
===============================================================
安装完成后在主1上操作
[root@localhost mysql-5.5.24]# chown -R mysql.mysql /usr/local/mysql
\*开机时刷新*\
[root@localhost mysql-5.5.24]# export PATH=$PATH:/usr/local/mysql/bin/
[root@localhost mysql-5.5.24]# cp support-files/my-medium.cnf /etc/my.cnf
cp：是否覆盖"/etc/my.cnf"？ y
[root@localhost mysql-5.5.24]# cp support-files/mysql.server /etc/init.d/mysqld
进行优化：
加权
[root@localhost mysql-5.5.24]# chmod 755 /etc/init.d/mysqld
开机自启动
[root@localhost mysql-5.5.24]# chkconfig --add /etc/init.d/mysqld
优先级
[root@localhost mysql-5.5.24]# chkconfig mysqld --level 35 on
--------------初始化数据库---------------------------------------------------------------
[root@localhost mysql-5.5.24]# /usr/local/mysql/scripts/mysql_install_db --user=mysql --ldata=/var/lib/mysql --basedir=/usr/local/mysql --datadir=/home/mysql
/*直接建立软连接*/
[root@localhost mysql-5.5.24]# ln -s /var/lib/mysql/mysql.sock /home/mysql/mysql.sock
编辑配置文件
[root@localhost mysql-5.5.24]# vim /etc/init.d/mysqld
basedir=/usr/local/mysql #在47行
datadir=/home/mysql #在48行
开启服务
[root@localhost mysql-5.5.24]# systemctl start mysqld.service
Warning: mysqld.service changed on disk. Run 'systemctl daemon-reload' to reload units.
开启服务后直接使用mysql就能登录了（退出用quit、或者exit）
[root@localhost mysql-5.5.24]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.24-log Source distribution
Copyright (c) 2000, 2011, 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> quit
Bye
给管理员设置密码登录
[root@localhost mysql-5.5.24]# mysqladmin -u root password 'abc123'
[root@localhost mysql-5.5.24]# mysql -u root –p
Enter password: （密码为你自己设置的abc123）
MySQL5.5就安装完成了（主从三台同装）
===========================mysql主服务器配置=====================================
[root@localhost mysql-5.5.24]# vim /etc/my.cnf
server-id = 11
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//（这条找不到可以自己在上一条log-bin下面插入）
改完配置文件重启服务
[root@localhost mysql-5.5.24]# systemctl restart mysqld.service
Warning: mysqld.service changed on disk. Run 'systemctl daemon-reload' to reload units.
登录MySQL
提权
mysql> GRANT REPLICATION SLAVE ON *.* TO 'myslave'@'192.168.120.%' IDENTIFIED BY '123456';
Query OK, 0 rows affected (0.00 sec)
刷新，即时生效
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
查看主服务器状态
mysql> show master status;
+-------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------+----------+--------------+------------------+
| master-bin.000001 | 571 | | |
+-------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
-----------------------------------------------------------mysql从服务器配置---------------------------------------------------
从1上操作：
[root@localhost mysql-5.5.24]# vim /etc/my.cnf
server-id = 22 //id不能相同
在id下面添加这两句话
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//
重启服务
[root@localhost mysql-5.5.24]# systemctl restart mysqld.service
Warning: mysqld.service changed on disk. Run 'systemctl daemon-reload' to reload units.
mysql> change master to master_host='192.168.120.129',master_user='myslave',master_password='123456',master_log_file='master-bin.000s001',master_log_pos=571;
Query OK, 0 rows affected (0.01 sec)
开启
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
查看状态
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.120.129
Master_User: myslave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000001
Read_Master_Log_Pos: 571
Relay_Log_File: relay-log-bin.000002
Relay_Log_Pos: 254
Relay_Master_Log_File: master-bin.000001
Slave_IO_Running: Yes //必须为yes
Slave_SQL_Running: Yes //必须为yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 571
Relay_Log_Space: 408
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 11
1 row in set (0.00 sec)
ERROR:
No query specified
mysql>
（另一台从2和从1同样操作包括配置文件里的id，必须一致）
--------------------------------------验证主从同步--------------------------------------------------
在主服务器上操作
创建一个school的库
mysql> create database school;
Query OK, 1 row affected (0.00 sec)
查看数据库
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| #mysql50#.mozilla |
| mysql |
| performance_schema |
| school |
| test |
+--------------------+
6 rows in set (0.00 sec)
mysql>
到两个从服务器上查看
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| #mysql50#.mozilla |
| mysql |
| performance_schema |
| school |
| test |
+--------------------+
6 rows in set (0.00 sec)
mysql>
主从同步没有问题
=====================安装amoeba服务器==================================
在amoeba服务器上操作（IP192.168.120.128）
关闭防火墙
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# setenforce 0
挂载
[root@localhost ~]# mkdir /abc
[root@localhost ~]# mount.cifs //192.168.100.1/Y2C /abc
[root@localhost ~]# cd /abc/Y2C
[root@localhost Y2C]# cp jdk-6u14-linux-x64.bin /usr/local/
[root@localhost Y2C]# cd /usr/local/
[root@localhost local]# ls
bin etc games include jdk-6u14-linux-x64.bin lib lib64 libexec sbin share src
执行jdk（回车后不停回车向下翻，最后一个yes就完成了）
[root@localhost local]# ./jdk-6u14-linux-x64.bin
[root@localhost local]# mv jdk1.6.0_14/ /usr/local/jdk1.6
[root@localhost local]# vim /etc/profile
在末尾添加
export JAVA_HOME=/usr/local/jdk1.6
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
export PATH=$JAVA_HOME/lib:$JAVA_HOME/jre/bin/:$PATH:$HOME/bin
export AMOEBA_HOME=/usr/local/amoeba
export PATH=$PATH:$AMOEBA_HOME/bin
保存退出后刷新一下，即时生效
[root@localhost local]# source /etc/profile
[root@localhost local]# mkdir /usr/local/amoeba
[root@localhost local]#cd /abc/Y2C/
[root@localhost Y2C]# tar zxvf amoeba-mysql-binary-2.2.0.tar.gz -C /usr/local/amoeba/
[root@localhost local]# chmod -R 755 /usr/local/amoeba/
执行一下
[root@localhost local]# /usr/local/amoeba/bin/amoeba
amoeba start|stop（显示amoeba start|stop说明安装就成功了）
===============================================================
在三台mysql上添加权限开放给amoeba访问
三台MySQL都要输入这条命令
mysql> grant all on *.* to test@'192.168.120.%' identified by '123.com';
Query OK, 0 rows affected (0.00 sec)
回到amoeba服务器上
[root@localhost local]# cd amoeba/
[root@localhost amoeba]# vim conf/amoeba.xml
---30行--
----32行---------
---117-去掉注释-
====================================================
[root@localhost amoeba]# vim conf/dbServers.xml
--26-29--去掉注释-------42-主服务器地址---
-------50行从1服务器--------------
-------57行从2服务器--------------
----------64行------------
--末尾70行--
保存退出
开启服务
[root@localhost amoeba]# /usr/local/amoeba/bin/amoeba start&
[1] 49453
[root@localhost amoeba]# log4j:WARN log4j config load completed from file:/usr/local/amoeba/conf/log4j.xml
2018-09-09 13:28:18,721 INFO context.MysqlRuntimeContext - Amoeba for Mysql current versoin=5.1.45-mysql-amoeba-proxy-2.2.0
log4j:WARN ip access config load completed from file:/usr/local/amoeba/conf/access_list.conf
2018-09-09 13:28:25,023 INFO net.ServerableConnectionManager - Amoeba for Mysql listening on 0.0.0.0/0.0.0.0:8066.
2018-09-09 13:28:25,026 INFO net.ServerableConnectionManager - Amoeba Monitor Server listening on /127.0.0.1:2582.
^C
查看java端口
[root@localhost amoeba]# netstat -anpt | grep java
tcp6 0 0 127.0.0.1:2582 :::* LISTEN 49453/java
tcp6 0 0 :::8066 :::* LISTEN 49453/java
tcp6 0 0 192.168.120.128:41852 192.168.120.131:3306 ESTABLISHED 49453/java
tcp6 0 0 192.168.120.128:33458 192.168.120.129:3306 ESTABLISHED 49453/java
tcp6 0 0 192.168.120.128:37036 192.168.120.130:3306 ESTABLISHED 49453/java
tcp6 0 0 192.168.120.128:41850 192.168.120.131:3306 ESTABLISHED 49453/java
tcp6 0 0 192.168.120.128:33460 192.168.120.129:3306 ESTABLISHED 49453/java
====================================客户端测试==========================================================
在客户端那台操作
第一步关闭防火墙
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# setenforce 0
在线装MySQL
[root@localhost ~]# yum install mysql -y
安装完毕后直接登录（IP为amoebaIP）
[root@localhost ~]# mysql -u amoeba -p123456 -h 192.168.120.128 -P8066
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MySQL connection id is 1760388653
Server version: 5.1.45-mysql-amoeba-proxy-2.2.0 Source distribution
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MySQL [(none)]>
代理服务器搭建就完成了
测试：
在master1主1上操作：
进入之前创建的school库：
mysql> use school;
Database changed
创建class表：
mysql> create table class (id int(10),name varchar(10),address varchar(20));
Query OK, 0 rows affected (0.04 sec)
到两个从里查看：
mysql> use school;
Database changed
mysql> show tables;
+------------------+
| Tables_in_school |
+------------------+
| class |
+------------------+
1 row in set (0.00 sec)
mysql>
然后关闭同步：
stop slave;
到主服务器上插入数据
mysql> insert into class values('1','zhang','this_is_master');
Query OK, 1 row affected (0.00 sec)
到从1上插入数据
mysql> use school;Database changed
mysql> insert into class values('2','zhang','this_is_slave1');
Query OK, 1 row affected (0.01 sec)
到从2上插入数据
mysql> use school;
Database changed
mysql> insert into class values('3','zhang','this_is_slave2');
Query OK, 1 row affected (0.01 sec)
在客户端上查看
Database changed
MySQL [school]> select * from class;
+------+-------+----------------+
| id | name | address |
+------+-------+----------------+
| 3 | zhang | this_is_slave2 |
+------+-------+----------------+
1 row in set (0.01 sec)
MySQL [school]> select * from class;
+------+-------+----------------+
| id | name | address |
+------+-------+----------------+
| 2 | zhang | this_is_slave1 |
+------+-------+----------------+
1 row in set (0.00 sec)
MySQL [school]> select * from class;
+------+-------+----------------+
| id | name | address |
+------+-------+----------------+
| 3 | zhang | this_is_slave2 |
+------+-------+----------------+
1 row in set (0.01 sec)
在客户端上插入一条数据
MySQL [school]> insert into class values('5','zhang','write_test');
Query OK, 1 row affected (0.02 sec)
到主从上分别查看
主上：
mysql> select * from class;
+------+-------+----------------+
| id | name | address |
+------+-------+----------------+
| 1 | zhang | this_is_master |
| 5 | zhang | write_test |
+------+-------+----------------+
2 rows in set (0.00 sec)
从上：
mysql> select * from class;
+------+-------+----------------+
| id | name | address |
+------+-------+----------------+
| 2 | zhang | this_is_slave1 |
+------+-------+----------------+
1 row in set (0.00 sec)
数据没更新
这就是主从复制，读写分离（现实中我们不会关闭从的同步，这是为了查看实验效果，实验完成后start slave；开启服务）
好了简单的读写分离就完成了，实验步骤较多，一定要仔细查看。