Mariadb主从复制
环境配置:
Master : 172.30.200.200
Slave : 172.30.200.204
架构图,如下:
Master的配置:
1.binlog配置
[[email protected] u01]# su - mysql
[[email protected] ~]$ mkdir -p /u01/data/binlog
[[email protected] ~]$ vi /etc/my.cnf
#*********** binlog related settings ***********
log-bin = /u01/data/binlog/mysql-bin
binlog_format= row
binlog_cache_size=32m
max_binlog_cache_size=64m
max_binlog_size=512m
server-id=30200
2.查看binlog的配置[可选看]
[[email protected] u01]# service mysqld restart
[[email protected] u01]# mysql -uroot -predhat
## 查看binlog开启
MariaDB [(none)]> show variables like '%log_bin%';
+---------------------------------+----------------------------------+
| Variable_name | Value |
+---------------------------------+----------------------------------+
| log_bin | ON |
| log_bin_basename | /u01/data/binlog/mysql-bin |
| log_bin_compress | OFF |
| log_bin_compress_min_len | 256 |
| log_bin_index | /u01/data/binlog/mysql-bin.index |
| log_bin_trust_function_creators | OFF |
| sql_log_bin | ON |
+---------------------------------+----------------------------------+
7 rows in set (0.002 sec)
## 查看binlog的格式,是基于行的复制。
MariaDB [(none)]> show variables like '%binlog_format%';
+----------------------------+-------+
| Variable_name | Value |
+----------------------------+-------+
| binlog_format | ROW |
| wsrep_forced_binlog_format | NONE |
+----------------------------+-------+
## 查看最大的binlog size,到了512m切换一个。
MariaDB [(none)]> show variables like '%max_binlog_size%';
+-----------------+-----------+
| Variable_name | Value |
+-----------------+-----------+
| max_binlog_size | 536870912 |
+-----------------+-----------+
1 row in set (0.001 sec)
3.创建replication用户
CREATE USER 'repl'@'172.30.200.204' IDENTIFIED BY 'repl';
GRANT REPLICATION SLAVE ON *.* TO 'repl'@'172.30.200.204';
4.定位二进制位置
## 锁定所有的表,保证数据一致性和完整性
MariaDB [(none)]> FLUSH TABLES WITH READ LOCK;
Query OK, 0 rows affected (0.001 sec)
MariaDB [(none)]> SHOW MASTER STATUS;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 667 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.000 sec)
5.使用mysqldump获取数据库快照
MariaDB [(none)]> FLUSH TABLES WITH READ LOCK;
[[email protected] ~]# mysqldump -uroot -predhat --all-databases --master-data >dbdump.log
MariaDB [(none)]> UNLOCK TABLES;
SLAVE的配置:
1.配置server-id
[[email protected] ~]# vi /etc/my.cnf
## 在[mysqld]作用域下面配置
server-id=30204
2.导入数据
如果是一个新库,可以不用导入数据。直接配置主从。
如果master已有数据,可以导入之前的dump文件。命令如下;
shell> mysql -uroot -predhat < dbdump.log
3.开启主从复制
CHANGE MASTER TO MASTER_HOST='172.30.200.200',MASTER_PORT = 3306,MASTER_USER = 'repl',MASTER_PASSWORD = 'repl',MASTER_LOG_FILE = 'mysql-bin.000001',MASTER_LOG_POS = 667;
4.开启复制
MariaDB [(none)]> start slave;
MariaDB [(none)]> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.30.200.200
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000002
Read_Master_Log_Pos: 342
Relay_Log_File: oradb-relay-bin.000003
Relay_Log_Pos: 641
Relay_Master_Log_File: mysql-bin.000002
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: 342
Relay_Log_Space: 1249
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: 30200
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
Replicate_Do_Domain_Ids:
Replicate_Ignore_Domain_Ids:
Parallel_Mode: conservative
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Slave_DDL_Groups: 0
Slave_Non_Transactional_Groups: 0
Slave_Transactional_Groups: 0
1 row in set (0.000 sec)
ERROR: No query specified
数据测试
1.master端插入数据
MariaDB [(none)]> create database zsd;
MariaDB [(none)]> use zsd;
MariaDB [zsd]> create table test(id int,name varchar(20));
MariaDB [zsd]> insert into test values(1,"张盛东");
MariaDB [zsd]> commit;
2.slave端查询数据
MariaDB [zsd]> select * from test;
+------+-----------+
| id | name |
+------+-----------+
| 1 | 张盛东 |
+------+-----------+
1 row in set (0.000 sec)
原文地址:https://www.cnblogs.com/zhangshengdong/p/11725020.html
时间: 2024-10-11 17:07:43