【原创】学习日记6:mysql主从设置及测试

本次完成的是架构图最下面的2个db :master - slave 结构的设计。

 

 

mysql 我是用yum装的,但是看过一些相关文章,建议还是采用编译安装。可以指定相关参数,如:

关键字 : mysql compile

1. -static  13% 
   --with-client-ldflags=-all-static
   --with-mysqld-ldflags=-all-static
静态链接提高13%性能

2. -pgcc  1%
   CFLAGS="-O3 -mpentiumpro -mstack-align-double" CXX=gcc \
     CXXFLAGS="-O3 -mpentiumpro -mstack-align-double \
     -felide-constructors -fno-exceptions -fno-rtti"
如果是Inter处理器,使用pgcc提高1%性能

3. Unix Socket  7.5%
   --with-unix-socket-path=/usr/local/mysql/tmp/mysql.sock
使用unix套接字链接提高7.5%性能,所以在windows下mysql性能肯定不如unix下面

4. --enable-assembler 
允许使用汇编模式(优化性能)

下面是总体的编译文件

编译代码 
CFLAGS="-O3" CXX=gcc CXXFLAGS="-O3 -felide-constructors -fno-exceptions -fno-rtti -fomit-frame-pointer -ffixed-ebp"
./configure --prefix=/usr/local/mysql --enable-assembler --with-mysqld-ldflags=-all-static  --with-client-ldflags=-all-static  --with-unix-socket-path=/usr/local/mysql/tmp/mysql.sock --with-charset=utf8  --with-collation=utf8_general_ci --with-extra-charsets=all -prefix=/data/app/mysql5123  --datadir=/data/mysqldata --sysconfdir=/data/app/mysql5123/etc --with-charset=utf8 --enable-assembler  --without-isam --with-pthread --enable-thread-safe-client --with-client-ldflags=-all-static --with-mysqld-ldflags=-all-static --with-extra-charsets=all --with-unix-socket-path=/data/app/mysql5123/tmp/mysql.sock 

1)

     在这里,我的master db 是192.168.65.131

                      slave db 是192.168.65.132

    且都关闭防火墙

2   配置master 首先编辑/etc/my.cnf,添加以下配置:

log-bin=mysql-bin #slave会基于此log-bin来做replication

server-id=131 #master的标示

binlog-do-db = amoeba_study #用于master-slave的具体数据库

 

 

然后添加专门用于replication的用户:

mysql> GRANT REPLICATION SLAVE ON *.* TO repl@192.168.65.132 IDENTIFIED BY '123456';

 

重启mysql,使得配置生效:

/etc/init.d/mysqld restart

最后查看master状态: 

mysql> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |      107 | test         |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

 3)配置slave 首先编辑/etc/my.cnf,添加以下配置:

server-id=132 #slave的标示

 

配置生效后,

配置与master的连接:

mysql> CHANGE MASTER TO    

-> MASTER_HOST='192.168.65.131',    

-> MASTER_USER='repl',    

-> MASTER_PASSWORD='123456',    

-> MASTER_LOG_FILE='mysql-bin.000001',    

-> MASTER_LOG_POS=107;

 

 

其中MASTER_HOST是master机的ip,MASTER_USER和MASTER_PASSWORD就是我们刚才在master上添加的用户,MASTER_LOG_FILE和MASTER_LOG_POS对应与master status里的信息

最后启动slave:

mysql> start slave;

4)验证master-slave搭建生效 通过查看slave机的log(/var/log/mysqld.log):

100703 10:51:42 [Note] Slave I/O thread: connected to master 'repl@192.168.65.131:3306',  replication started in log 'mysql-bin.000001' at position 107  

 

如看到以上信息则证明搭建成功,如果有问题也可通过此log找原因

 

在从库上查看下状态:


mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.65.131
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 107
Relay_Log_File: mysqld-relay-bin.000002
Relay_Log_Pos: 253
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes  //必须是yes
Slave_SQL_Running: Yes  //必须是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: 107
Relay_Log_Space: 410
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: 131
1 row in set (0.01 sec)



注:Slave_IO及Slave_SQL进程必须正常运行,即YES状态,否则都是错误的状态(如:其中一个NO均属错误)。

以上操作过程,主从服务器配置完成。

我们去主db上看下,a 新建个表,b 插入条数据;

mysql> use test;
Database changed
mysql> create table hi_tb(id int(3),name char(10));
Query OK, 0 rows affected (0.11 sec)

mysql> insert into hi_tb values(001,'bobu');
Query OK, 1 row affected (0.02 sec)

 

我们在从库看下,a 当主库建完表后,看下show;b 插入数据后,再select下;

mysql> use test;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| hi_tb          |
+----------------+
1 row in set (0.00 sec)

mysql> select * from hi_tb; 
Empty set (0.00 sec)

mysql> select * from hi_tb;
+------+------+
| id   | name |
+------+------+
|    1 | bobu |
+------+------+
1 row in set (0.00 sec)

 

 ok 一切都是完美的!!!

 

 

 

 

posted @ 2013-01-11 14:16  thinkidea  阅读(1160)  评论(0编辑  收藏  举报