Centos7+MySQL主主复制架构
主主架构：就是互为主从的架构
node1:10.211.55.4 centos7 mariadb-5.5.65
node2:10.211.55.6 centos7 mariadb-5.5.65
主从架构配置如下：
https://www.cnblogs.com/zhangxingeng/p/10901452.html
1、安装启动mysql
all:
1）安装mariadb软件
yum install mariadb-server -y
3）启动进程
systemctl start mariadb
2、mysql双主配置
1）创建双主配置文件
node1：
[mysqld]
server-id=1
log-bin=mysql-bin
relay-log=mysql-relay-bin
binlog-do-db=test1
log-slave-updates
expire_logs_days=7
auto_increment_offset=1
auto_increment_increment=2
replicate-do-db=test1
node2：
[mysqld]
server-id=2
#<==标识服务器id
log-bin=mysql-bin
#<==打开mysql二进制日志
relay-log=mysql-relay-bin
#<==打开mysql中继日志
binlog-do-db=test1
#<==指定数据库binlog日志记录哪个db
log-slave-updates
#<==更新的数据写入二进制日志，查询show variables like 'log_slave_updates';
expire_logs_days=7
#<==binlog日志自动过期清理设置为7天
auto_increment_offset=2
#<==控制列中值得增长值，也就是步长
auto_increment_increment=2
#<==确定increment_offset列值得起点值
replicate-do-db=test1
#<==指定slave需要复制哪个库
注意：systemctl restart mariadb
2）添加同步账户
mysql
grant replication slave ,replication client on *.* to slave@'10.211.%.%' identified by 'centos';
3）查看坐标值：
node1:
show master status;
[root@node1 my.cnf.d]# mysql
Welcome to the MariaDB monitor. Commands end with ; or g.
Your MariaDB connection id is 2
Server version: 5.5.65-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
MariaDB [(none)]> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 245 | test1 | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
MariaDB [(none)]>
node2:
show master status;
MariaDB [(none)]> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000004 | 245 | test1 | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
MariaDB [(none)]> exit
4）从服务器连接配置
node2:
MariaDB [(none)]> change master to
-> master_host='10.211.55.4',
-> master_user='slave',
-> master_password='centos',
-> master_log_file='mysql-bin.000001',
#<==指明初始复制时的mysql1中的binlog文件
-> master_log_pos=245;
#<==指明初始复制时binlog文件的位置
Query OK, 0 rows affected (0.01 sec)
node1:
MariaDB [(none)]> change master to
-> master_host='10.211.55.6',
-> master_user='slave',
-> master_password='centos',
-> master_log_file='mysql-bin.000004',
-> master_log_pos=245;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]>
5）开启开启slave线程
all：
mysql
MariaDB [(none)]> start slave;
6）查询slave状态
主要关注：
Slave_IO_Running: Yes #<==slave-IO线程是否yes
Slave_SQL_Running: Yes #<==slave-SQL线程是否yes
Replicate_Do_DB: test1 #<==同步的数据库是否正确
node1：
MariaDB [(none)]> show slave statusG;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.211.55.6
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000004
Read_Master_Log_Pos: 245
Relay_Log_File: mysql-relay-bin.000002
Relay_Log_Pos: 529
Relay_Master_Log_File: mysql-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: test1
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: 245
Relay_Log_Space: 823
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: 2
1 row in set (0.00 sec)
ERROR: No query specified
node2：
MariaDB [(none)]> show slave statusG;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.211.55.4
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 245
Relay_Log_File: mysql-relay-bin.000002
Relay_Log_Pos: 529
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: test1
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: 245
Relay_Log_Space: 823
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)
ERROR: No query specified
MariaDB [(none)]>
7）测试
mysql是双向同步
在主上创建test_table数据表，插入master的数据
node1：
mysql
MariaDB [(none)]> use test1;
MariaDB [test1]> create table test_table (kk int auto_increment not null primary key, vv varchar(10));
MariaDB [test1]> insert into test_table(vv) values('master');
MariaDB [test1]> select * from test_table;
+----+--------+
| kk | vv |
+----+--------+
| 1 | master |
+----+--------+
1 row in set (0.00 sec)
备节点查询
node2：
mysql
MariaDB [test1]> use test1;
MariaDB [test1]> select * from test_table;
+----+--------+
| kk | vv |
+----+--------+
| 1 | master |
+----+--------+
1 row in set (0.00 sec)
备节点插入数据backup
node2:
MariaDB [test1]> insert into test_table(vv) values('backup');
MariaDB [test1]> select * from test_table;
+----+--------+
| kk | vv |
+----+--------+
| 1 | master |
| 2 | backup |
+----+--------+
2 rows in set (0.00 sec)
主节点查询backup有没有同步过来
node1：
mysql
MariaDB [test1]> select * from test_table;
+----+--------+
| kk | vv |
+----+--------+
| 1 | master |
| 2 | backup |
+----+--------+
2 rows in set (0.00 sec)
转载请注明出处：https://www.cnblogs.com/zhangxingeng/p/13439480.html