标签:pid 1.5 use png user run slave image long
1.主从复制配置[mysqld]
#一般配置选项
user=mysql
port=3306
server_id=1
basedir= /usr/local/mysql
datadir= /usr/app/mysqldata
character_set_server=utf8
pid_file=/usr/app/mysqldata/mysql.pid
socket = /var/run/mysqld/mysqld.sock
#错误日志
log_error= /usr/app/mysqldata/myerror.log
#慢日志
slow_query_log=1
slow_query_log_file=/usr/app/mysqllog/mysql.slow
long_query_time=5
#bin_log日志
log_bin=/usr/app/mysqllog/mysql_bin
skip_external_locking
skip_name_resolve
#开启独立表空间
innodb_file_per_table = on
[mysql]
no-auto-rehash
socket = /var/run/mysqld/mysqld.sock
#default-character-set=utf8
#safe-updates
[client]
loose-default-character-set = utf8
重启MySQL服务
/etc/init.d/mysqld start
授权slvave 用户
grant replication slave,replication client on . to ‘slvae_rp‘ identified by ‘111111‘;
flush privileges;
从库配置/etc/my.cnf文件
[mysqld]
#一般配置选项
user=mysql
port=3306
server_id=1
basedir= /usr/local/mysql
datadir= /usr/app/mysqldata
character_set_server=utf8
pid_file=/usr/app/mysqldata/mysql.pid
socket = /var/run/mysqld/mysqld.sock
#错误日志
log_error= /usr/app/mysqldata/myerror.log
#慢日志
slow_query_log=1
slow_query_log_file=/usr/app/mysqllog/mysql.slow
long_query_time=5
#bin_log日志
log_bin=/usr/app/mysqllog/mysql_bin
#开启中继日志
relay_log=/var/lib/mysql/relay-log
log_slave_updates=1 #从服务器将其SQL线程执行的更新记入到从服务器自己的二进制日志
read_only=1 #只读模式
skip_external_locking
skip_name_resolve
#开启独立表空间
innodb_file_per_table = on
[mysql]
no-auto-rehash
socket = /var/run/mysqld/mysqld.sock
#default-character-set=utf8
#safe-updates
[client]
loose-default-character-set = utf8
重启mysql服务
/etc/init.d/mysqld restart
主库:
show master status;
从库:
change master to
master_host=‘192.168.11.146‘,
master_port=3306,
master_user=‘slave_rp‘,
master_password=‘111111‘,
master_log_file=‘mysql-bin.000001‘,
master_log_pos=154;
开启从库slava
start slave;
查看从库状态
show slave status;
确认正常:
slave_io_running:yes
slave_sql_running:yes
seconds_behind_master 0
2.主从复制原理
从库生成两个线程,一个I/O线程,一个SQL线程;
i/o线程去请求主库 的binlog,并将得到的binlog日志写到relay log(中继日志) 文件中;
主库会生成一个 log dump 线程,用来给从库 i/o线程传binlog;
SQL 线程,会读取relay log文件中的日志,并解析成具体操作,来实现主从的操作一致,而最终数据一致;
标签:pid 1.5 use png user run slave image long
原文地址:http://blog.51cto.com/11103985/2338911