Redhat7.0系统利用amoeba对mysql数据进行读写分离的操作，MySQL数据库的主从配置
这个是本实验的流程说明图
实验环境：四台机器
系统环境：rhel7.0
amoeba双网卡服务器：外网采用nat模式，内网地址：192.168.10.10
master服务器：192.168.10.11
slave-1服务器：192.168.10.12
slave-2服务器：192.168.10.13
首先要配置mysql的主从复制，这里采用了一台master，两台slave进行实验
#master服务器上的相关服务与配置
[root@master ~]# yum -y install mariadb*
[root@master ~]# systemctl restart mariadb
[root@master ~]# systemctl enable mariadb
ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.service'
[root@master ~]# firewall-cmd --permanent --add-service=mysql
success
[root@master ~]# firewall-cmd --reload
success
[root@master ~]# mysqladmin -uroot password "123456";
#修改my.cnf文件
#
#在[mysqld]模块下添加两行文件
log-bin=master
server-id=11
[root@master ~]# mysql -u root -p123456
MariaDB [(none)]> grant replication slave on *.* to 'admin'@'192.168.10.%' identified by '123456';
######################################################################################################################
#slave-1服务器上的相关服务与配置
[root@slave-1 ~]# yum -y install mariadb*
[root@slave-1 ~]# systemctl restart mariadb
[root@slave-1 ~]# systemctl enable mariadb
ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.service'
[root@slave-1 ~]# firewall-cmd --permanent --add-service=mysql
success
[root@slave-1 ~]# firewall-cmd --reload
success
[root@slave-1 ~]# mysqladmin -uroot password "123456";
#修改my.cnf文件
#
#在[mysqld]模块下添加两行文件
log-bin=slave-1
server-id=12
[root@slave-1 ~]# systemctl restart mariadb
[root@slave-1 ~]# mysql -uroot -p123456
MariaDB [(none)]> change master to master_host='192.168.10.11',master_user='admin',master_password='123456',master_log_file='master.000001',master_log_pos=245;
Query OK, 0 rows affected (0.01 sec)
MariaDB [(none)]> slave start;
MariaDB [(none)]> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.10.11
Master_User: admin
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master.000001
Read_Master_Log_Pos: 245
Relay_Log_File: mariadb-relay-bin.000002
Relay_Log_Pos: 526
Relay_Master_Log_File: master.000001
Slave_IO_Running: Yes
Slave_SQL_Running: 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: 245
Relay_Log_Space: 822
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)
####################################################################################################################
#slave-2服务器上的相关服务与配置
[root@slave-2 ~]# yum -y install mariadb*
[root@slave-2 ~]# systemctl restart mariadb
[root@slave-2 ~]# systemctl enable mariadb
ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.service'
[root@slave-2 ~]# firewall-cmd --permanent --add-service=mysql
success
[root@slave-2 ~]# firewall-cmd --reload
success
[root@slave-2 ~]# mysqladmin -uroot password "123456";
#修改my.cnf文件
#
#在[mysqld]模块下添加两行文件
log-bin=slave-2
server-id=13
[root@slave-2 ~]# systemctl restart mariadb
[root@slave-2 ~]# mysql -uroot -p123456
MariaDB [(none)]> change master to master_host='192.168.10.11',master_user='admin',master_password='123456',master_log_file='master.000001',master_log_pos=245;
MariaDB [(none)]> slave start;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> show slave status\G;
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.10.11
Master_User: admin
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master.000001
Read_Master_Log_Pos: 245
Relay_Log_File: mariadb-relay-bin.000002
Relay_Log_Pos: 526
Relay_Master_Log_File: master.000001
Slave_IO_Running: Yes
Slave_SQL_Running: 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: 245
Relay_Log_Space: 822
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)至此，我们现在来验证其是否成功
在master服务上
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec)
在两台slave服务器上分别执行以下命令
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.00 sec)在master服务器上创建一个数据库
MariaDB [(none)]> create database library;
Query OK, 1 row affected (0.00 sec)在两台slave服务器上分别执行以下命令，理论上一个会出现library这个数据库的。
MariaDB [(none)]> create database library;
Query OK, 1 row affected (0.00 sec)以上步骤为mysql的主从复制配置成功，
接下来我们要利用amoeba来对mysql进行读写分离的操作
首先需要准备软件包
jave包
jdk-6u14-linux-x64.rpm
amoeba包
amoeba-mysql-binary-2.2.0.tar.gz
第一步：用传输工具吧两个包传进amoeba服务器里面，
[root@amoeba ~]# ll
total 83024
-rw-r--r--. 1 root root 3161433 Nov 20 21:13 amoeba-mysql-binary-2.2.0.tar.gz
-rw-------. 1 root root 898 Oct 4 21:15 anaconda-ks.cfg
-rw-r--r--. 1 root root 81849212 Nov 20 21:13 jdk-6u14-linux-x64.bin第二步：在所有mysql服务器上执行以下命令
grant all privileges on *.* to 'user'@'%' identified by '123456';
第三步：添加Java环境并加入到系统变量中
检查系统中是否有Java的环境，如果有，请删除
[root@amoeba ~]# ll /usr/bin/java
[root@amoeba ~]# ll /usr/bin/javac
[root@amoeba ~]# rm -rf /usr/bin/java
[root@amoeba ~]# rm -rf /usr/bin/javac
[root@amoeba ~]# chmod +x jdk-6u14-linux-x64.bin
[root@amoeba ~]# ./jdk-6u14-linux-x64.bin
[root@amoeba ~]# mv jdk1.6.0_14 /usr/local/jdk1.6
[root@amoeba ~]# echo '
> 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:$PATH/bin
> export AMOEBA_HOME=/usr/local/amoeba/
> export PATH=$PATH:$AMOEBA_HOME/bin' >> /etc/profile第四步：配置amoeba环境
[root@amoeba ~]# mkdir /usr/local/amoeba
[root@amoeba ~]# tar xf amoeba-mysql-binary-2.2.0.tar.gz -C /usr/local/amoeba
[root@amoeba ~]# chmod -R 755 /usr/local/amoeba/
第四步：更新系统环境变量并且验证amoeba是否成功
[root@amoeba ~]# source /etc/profile
[root@amoeba ~]# /usr/local/amoeba/bin/amoeba
amoeba start|stop第五步：编辑amoeba配置文件
首先先编辑
vim /usr/local/amoeba/conf/amoeba.xml
#在30行修改用户密码
30 <property name="user">amoeba</property>
31
32 <property name="password">123456</property>
#在114行进行修改
114 <property name="LRUMapSize">1500</property>
115 <property name="defaultPool">master</property>
116
117 <!---->
118 <property name="writePool">master</property>
119 <property name="readPool">slave</property>
vim /usr/local/amoeba/conf/dbServers.xml
#在26行修改其配置
26 <property name="user">user</property>
27
28 <!-- mysql password -->
29 <property name="password">123456</property>
#在45行修改其配置
45 <dbServer name="master" parent="abstractServer">
46 <factoryConfig>
47 <!-- mysql ip -->
48 <property name="ipAddress">192.168.10.11</property>
49 </factoryConfig>
50 </dbServer>
51
52 <dbServer name="slave-1" parent="abstractServer">
53 <factoryConfig>
54 <!-- mysql ip -->
55 <property name="ipAddress">192.168.10.12</property>
56 </factoryConfig>
57 </dbServer>
58
59 <dbServer name="slave-2" parent="abstractServer">
60 <factoryConfig>
61 <!-- mysql ip -->
62 <property name="ipAddress">192.168.10.13</property>
63 </factoryConfig>
64 </dbServer>
65
66 <dbServer name="slave" virtual="true">
67 <poolConfig class="com.meidusa.amoeba.server.MultipleServerPool">
68 <!-- Load balancing strategy: 1=ROUNDROBIN , 2=WEIGHTBASED , 3=HA-->
69 <property name="loadbalance">1</property>
70
71 <!-- Separated by commas,such as: server1,server2,server1 -->
72 <property name="poolNames">slave-1,slave-2</property>
73 </poolConfig>
74 </dbServer>
最后启动amoeba
[root@amoeba ~]# /usr/local/amoeba/bin/amoeba start
检验
在客户端安装mysql-gui-tools-5.0.2226203566
安装成功之后打开数据库链接界面
其中 server host请输入amoeba服务器的外网卡地址，用户名为amoeba，密码为123456，端口为8066
连接成功
（如果连接不成功，请把所有的服务器的防火墙关闭）
打开一个mysql的终端，创建一个数据库；
然后在master，slave-1，slave-2数据库服务器上show数据库，都发现会出现amoeba这个数据库
