标签：nlog The you art 生产 cti rdp 分布式 _id
MySQL作为世界上使用最为广泛的数据库之一，免费是其原因之一。但不可忽略的是它本身的功能的确很强大。随着技术的发展，在实际的生产环境中，由单台MySQL数据库服务器不能满足实际的需求。此时数据库集群就很好的解决了这个问题了。采用MySQL分布式集群，能够搭建一个高并发、负载均衡的集群服务器（这篇博客暂时不涉及）。在此之前我们必须要保证每台MySQL服务器里的数据同步。数据同步我们可以通过MySQL内部配置就可以轻松完成，主要有主从复制和主主复制。
主：192.168.182.155 centos7.2
从：192.168.182.156 centos7.2
修改主从服务器的配置文件/etc/my.cnf，在mysqld中添加log-bin=mysql-bin开启二进制文件
主服务配置：
[root@localhost ~]# cat /etc/my.cnf # # This group is read both both by the client and the server # use it for options that affect everything # [client-server] # # This group is read by the server # [mysqld] # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0log-bin=mysql-bin
server-id=1
innodb_flush_log_at_trx_commit=1
sync_binlog=1
binlog_ignore_db=mysql
# # include all files from the config directory # !includedir /etc/my.cnf.d
从服务器配置：
[root@localhost ~]# cat /etc/my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 # Settings user and group are ignored when systemd is used. # If you need to run mysqld under a different user or group, # customize your systemd unit file for mariadb according to the # instructions in http://fedoraproject.org/wiki/Systemd [mysqld_safe] log-error=/var/log/mariadb/mariadb.log pid-file=/var/run/mariadb/mariadb.pid log-bin=mysql-bin # # include all files from the config directory # !includedir /etc/my.cnf.d
在192.168.182.155中创建一个192.168.182.156主机中可以登录的MySQL用户
登陆主数据库
mysql -uroot -pwc20080512;
创建连接账号和密码
MariaDB [(none)]> CREATE USER ‘mysql12‘@ ‘192.168.182.156‘ IDENTIFIED BY ‘mysql12‘;
授权
MariaDB [(none)]> GRANT REPLICATION SLAVE ON *.* TO ‘mysql12‘@192.168.182.156 IDENTIFIED BY ‘mysql12‘; Query OK, 0 rows affected (0.02 sec)
MariaDB [(none)]> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.02 sec)
执行以下命令锁定数据库以防止写入数据
MariaDB [(none)]> FLUSH TABLES WITH READ LOCK; Query OK, 0 rows affected (0.07 sec)
退出mysql命令行，导出数据库
mysqldump -uroot -pwc20080512 -B heruiguo wanghaixue > /opt/mysql.sql;
scp 数据文件到从服务器
scp /opt/mysql.sql 192.168.182.156:/opt
登陆从服务器导入数据
[root@localhost ~]# mysql -uroot -pwc20080512</opt/mysql.sql
编辑配置文件my.cnf,在[mysqld]下面加入：
server-id=2
重启数据库
systemctl restart mariadb.service
查看192.168.182.155 MySQL服务器二进制文件名与位置
MariaDB [(none)]> SHOW MASTER STATUS;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000010 | 327 | wordpress | mysql |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
解锁数据库
MariaDB [(none)]> UNLOCK TABLES; Query OK, 0 rows affected (0.00 sec)
在从服务器执行
[root@localhost ~]# mysql -uroot -pwc20080512
CHANGE MASTER TO
MASTER_HOST=‘192.168.182.155‘,
MASTER_USER=‘mysql12‘,
MASTER_PASSWORD=‘mysql12‘,
MASTER_PORT=3306,
MASTER_LOG_FILE=‘mysql-bin.000010‘,
MASTER_LOG_POS=327;
启动slave进程。
MariaDB [(none)]> START SLAVE; Query OK, 0 rows affected, 1 warning (0.00 sec)
查看主从复制是否配置成功
MariaDB [(none)]> SHOW SLAVE STATUS\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.182.155 Master_User: mysql12 Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000010 Read_Master_Log_Pos: 723 Relay_Log_File: mariadb-relay-bin.000002 Relay_Log_Pos: 929 Relay_Master_Log_File: mysql-bin.000010 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: 723 Relay_Log_Space: 1225 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: 1 1 row in set (0.00 sec)
主从配置完成
测试
在主服务器上创建数据库
MariaDB [heruiguo]> create database aaa; Query OK, 1 row affected (0.01 sec) MariaDB [heruiguo]> SHOW MASTER STATUS; +------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+------------------+ | mysql-bin.000012 | 624 | | mysql | +------------------+----------+--------------+------------------+ 1 row in set (0.00 sec)
在从库上验证
MariaDB [heruiguo]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | aaa | | heruiguo | | mysql | | performance_schema | | wanghaixue | +--------------------+ 6 rows in set (0.00 sec)
标签：nlog The you art 生产 cti rdp 分布式 _id
原文地址：https://www.cnblogs.com/heruiguo/p/8986354.html
