mysql 主从配置:
2011-04-02 14:04
381 查看
mysql 主从配置:
master: 192.168.189.140
slave: 192.168.189.141
系统:centos 5.4
防火墙处于关闭状态(要开启的话,需要就要主服务器开放3306端口)
1、在两台服务器上安装mysql
tar zxvf mysql-5.1.48.tar.gz
cd mysql-5.1.48
./configure --prefix=/usr/local/mysql --localstatedir=/var/lib/mysql --with-comment=Source --with-server-suffix=-enterprise-gpl --with-mysqld-user=mysql --without-debug --with-big-tables --with-charset=utf8 --with-collation=utf8_general_ci --with-extra-charsets=all --with-pthread --enable-static --enable-thread-safe-client --with-client-ldflags=-all-static --with-mysqld-ldflags=-all-static --enable-assembler --without-ndb-debug --with-plugins=myisam,innobase
make && make install
useradd mysql
cd /usr/local/mysql
bin/mysql_install_db --user=mysql
chown -R root:mysql .
chown -R mysql /var/lib/mysql
chgrp -R mysql .
cp share/mysql/mysql.server /etc/init.d/mysqld
chmod 755 /etc/init.d/mysqld
chkconfig --add mysqld
ln -s /usr/local/mysql/bin/mysqld_safe /usr/bin/mysqld_safe
ln -s /usr/local/mysql/share/mysql/mysql.server /usr/bin/mysqld
ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
ln -s /usr/local/mysql/bin/mysqldump /usr/bin/mysqldump
ln -s /usr/local/mysql/bin/mysqladmin /usr/bin/mysqladmin
ln -s /usr/local/mysql/lib/mysql /usr/lib/mysql
ln -s /usr/local/mysql/include/mysql /usr/include/mysql
echo "/usr/local/mysql/lib/mysql" >> /etc/ld.so.conf
ldconfig
chkconfig --level 35 mysqld on
service mysqld restart
mysql -p 进入下看是否安装成功
2、my.cnf的配置
a、在主服务器(master)上,设置一个从数据库的账户,使用REPLICATION SLAVE赋予权限,如:
mysql> GRANT REPLICATION SLAVE ON *.* TO 'slave001'@'192.168.189.141' IDENTIFIED BY'123456';
修改主数据库的配置文件my.cnf,开启BINLOG,并设置server-id的值,修改之后必须重启Mysql服务
cp /usr/local/mysql/share/mysql/my-medium.cnf /etc/my.cnf
mkdir /var/log/mysql
chown -R mysql.mysql /var/log/mysql/
vi /etc/my.cnf
添加以下参数:
server-id=1
log_bin=/var/log/mysql/mysql-bin.log
binlog-do-db=test
binlog-ignore-db=mysql
servies mysqld restart 看是否会正常启动 , 没有问题继续 配置从服务器(slave)
查看:
mysql> show master status\G;
*************************** 1. row ***************************
File: mysql-bin.000002
Position: 369
Binlog_Do_DB: test
Binlog_Ignore_DB: mysql
1 row in set (0.00 sec)
b、slave服务器上配置my.cnf
cp /usr/local/mysql/share/mysql/my-medium.cnf /etc/my.cnf
mkdir /var/log/mysql
chown -R mysql.mysql /var/log/mysql/
my.cnf中添加以下参数
server-id=2
log_bin=/var/log/mysql/mysql-bin.log
master-host=192.168.189.140
master-user=slave001
master-port=3306
master-connect-retry=60
replicate-do-db=test
replicate-ignore-db=mysql
service mysqld restart测试mysql是否正常启动
在从服务器上,启动slave进程
mysql> start slave;
在从服务器进行show salve status验证
mysql> mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.189.140
Master_User: slave001
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 369
Relay_Log_File: localhost-relay-bin.000003
Relay_Log_Pos: 514
Relay_Master_Log_File: mysql-bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: test
Replicate_Ignore_DB: mysql
一切OK,接下来就是测试master和slave服务器是否会同步数据
3、测试
在master服务器上创建一张表
CREATE TABLE tab1 (
id INT,
val VARCHAR(10),
PRIMARY KEY (id)
);
查看slave服务器上是否有tab1表,结果是此表存在
mysql> desc tab1;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | NO | PRI | 0 | |
| val | varchar(10) | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
2 rows in set (0.00 sec)
问题:
使用 stop slave;
这时候系统提示:
mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)
但当执行start slave;的时候,就出现了如下错误:
mysql> start slave;
ERROR 1201 (HY000): Could not initialize master info structure; more error messages can be found in the MySQL error log
mysql>
解决办法:
1.进入MySQL数据库默认的数据库存储目录:
/usr/local/mysql/var
这个目录根据实际情况而定,使用不同的安装方式,或是编译指定目录不同,这个目录也不一定相同,但只要找到数据库的存储目录就好。
2.删除以下两个文件:
master.info
relay-log.info
3.登陆数据库后,执行:
start slave;
返回如下信息:
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql>
这样就说明问题已经解决了。
本文出自 “Holy” 博客,请务必保留此出处http://holy2010.blog.51cto.com/1086044/533814
master: 192.168.189.140
slave: 192.168.189.141
系统:centos 5.4
防火墙处于关闭状态(要开启的话,需要就要主服务器开放3306端口)
1、在两台服务器上安装mysql
tar zxvf mysql-5.1.48.tar.gz
cd mysql-5.1.48
./configure --prefix=/usr/local/mysql --localstatedir=/var/lib/mysql --with-comment=Source --with-server-suffix=-enterprise-gpl --with-mysqld-user=mysql --without-debug --with-big-tables --with-charset=utf8 --with-collation=utf8_general_ci --with-extra-charsets=all --with-pthread --enable-static --enable-thread-safe-client --with-client-ldflags=-all-static --with-mysqld-ldflags=-all-static --enable-assembler --without-ndb-debug --with-plugins=myisam,innobase
make && make install
useradd mysql
cd /usr/local/mysql
bin/mysql_install_db --user=mysql
chown -R root:mysql .
chown -R mysql /var/lib/mysql
chgrp -R mysql .
cp share/mysql/mysql.server /etc/init.d/mysqld
chmod 755 /etc/init.d/mysqld
chkconfig --add mysqld
ln -s /usr/local/mysql/bin/mysqld_safe /usr/bin/mysqld_safe
ln -s /usr/local/mysql/share/mysql/mysql.server /usr/bin/mysqld
ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
ln -s /usr/local/mysql/bin/mysqldump /usr/bin/mysqldump
ln -s /usr/local/mysql/bin/mysqladmin /usr/bin/mysqladmin
ln -s /usr/local/mysql/lib/mysql /usr/lib/mysql
ln -s /usr/local/mysql/include/mysql /usr/include/mysql
echo "/usr/local/mysql/lib/mysql" >> /etc/ld.so.conf
ldconfig
chkconfig --level 35 mysqld on
service mysqld restart
mysql -p 进入下看是否安装成功
2、my.cnf的配置
a、在主服务器(master)上,设置一个从数据库的账户,使用REPLICATION SLAVE赋予权限,如:
mysql> GRANT REPLICATION SLAVE ON *.* TO 'slave001'@'192.168.189.141' IDENTIFIED BY'123456';
修改主数据库的配置文件my.cnf,开启BINLOG,并设置server-id的值,修改之后必须重启Mysql服务
cp /usr/local/mysql/share/mysql/my-medium.cnf /etc/my.cnf
mkdir /var/log/mysql
chown -R mysql.mysql /var/log/mysql/
vi /etc/my.cnf
添加以下参数:
server-id=1
log_bin=/var/log/mysql/mysql-bin.log
binlog-do-db=test
binlog-ignore-db=mysql
servies mysqld restart 看是否会正常启动 , 没有问题继续 配置从服务器(slave)
查看:
mysql> show master status\G;
*************************** 1. row ***************************
File: mysql-bin.000002
Position: 369
Binlog_Do_DB: test
Binlog_Ignore_DB: mysql
1 row in set (0.00 sec)
b、slave服务器上配置my.cnf
cp /usr/local/mysql/share/mysql/my-medium.cnf /etc/my.cnf
mkdir /var/log/mysql
chown -R mysql.mysql /var/log/mysql/
my.cnf中添加以下参数
server-id=2
log_bin=/var/log/mysql/mysql-bin.log
master-host=192.168.189.140
master-user=slave001
master-port=3306
master-connect-retry=60
replicate-do-db=test
replicate-ignore-db=mysql
service mysqld restart测试mysql是否正常启动
在从服务器上,启动slave进程
mysql> start slave;
在从服务器进行show salve status验证
mysql> mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.189.140
Master_User: slave001
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 369
Relay_Log_File: localhost-relay-bin.000003
Relay_Log_Pos: 514
Relay_Master_Log_File: mysql-bin.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: test
Replicate_Ignore_DB: mysql
一切OK,接下来就是测试master和slave服务器是否会同步数据
3、测试
在master服务器上创建一张表
CREATE TABLE tab1 (
id INT,
val VARCHAR(10),
PRIMARY KEY (id)
);
查看slave服务器上是否有tab1表,结果是此表存在
mysql> desc tab1;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| id | int(11) | NO | PRI | 0 | |
| val | varchar(10) | YES | | NULL | |
+-------+-------------+------+-----+---------+-------+
2 rows in set (0.00 sec)
问题:
MySQL同步时,出现的ERROR 1201 (HY000)错误解决方法
在MySQL主从复制的时候,在slave服务器上,登陆MySQL,使用 stop slave;
这时候系统提示:
mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)
但当执行start slave;的时候,就出现了如下错误:
mysql> start slave;
ERROR 1201 (HY000): Could not initialize master info structure; more error messages can be found in the MySQL error log
mysql>
解决办法:
1.进入MySQL数据库默认的数据库存储目录:
/usr/local/mysql/var
这个目录根据实际情况而定,使用不同的安装方式,或是编译指定目录不同,这个目录也不一定相同,但只要找到数据库的存储目录就好。
2.删除以下两个文件:
master.info
relay-log.info
3.登陆数据库后,执行:
start slave;
返回如下信息:
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql>
这样就说明问题已经解决了。
本文出自 “Holy” 博客,请务必保留此出处http://holy2010.blog.51cto.com/1086044/533814
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