一、 需求

1.準備6臺數據庫
2.一臺主庫，一臺從庫，一臺延時複製，一臺半同步複製，一臺過濾複製，一臺基於GTID的主從複製

3.環境準備

二、非同步複製

1.mysql主庫配置

#編輯主庫配置檔案
[root@db01 ~]# vim /etc/my.cnf
[mysqld]
server_id=1
log_bin=mysql-bin

#檢視binlog
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set                        |
+------------------+----------+--------------+------------------+-------------------------------+
| mysql-bin.000008 |      120 |              |                  | 0e2277b0-1e92-11eb-b4de-000c29577624:1-2 |
+------------------+----------+--------------+------------------+-------------------------------+
1 row in set (0.00 sec)

#授權使用者
mysql> grant replication slave on *.* to zzc@'172.16.1.%' identified by '123';
Query OK, 0 rows affected (1.00 sec)

 

2.從庫配置

#從庫配置
[root@db02 ~]# vim /etc/my.cnf
[mysqld]
server_id=2

[root@db02 ~]# mysql
mysql> change master to
    -> master_host='172.16.1.51',
    -> master_user='zzc',
    -> master_password='123',
    -> master_port=3306,
    -> master_log_file='mysql-bin.000008',
    -> master_log_pos=120;
Query OK, 0 rows affected, 2 warnings (0.09 sec)

mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 172.16.1.51
                  Master_User: zzc
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000008
          Read_Master_Log_Pos: 120
               Relay_Log_File: db02-relay-bin.000002
                Relay_Log_Pos: 283
        Relay_Master_Log_File: mysql-bin.000008
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes

 

三、延時複製

[root@db03 ~]# vim /etc/my.cnf
[mysqld]
server_id=3

[root@db03 ~]# systemctl restart mysqld

[root@db03 ~]# mysql
mysql> change master to
    -> master_host='172.16.1.51',
    -> master_user='zzc',
    -> master_password='123',
    -> master_port=3306,
    -> master_log_file='mysql-bin.000008',
    -> master_log_pos=120,
    -> master_delay=3600;      #延時輔助只需多加這條內容

mysql> start slave;

mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 172.16.1.51
                  Master_User: zzc
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000008
          Read_Master_Log_Pos: 120
               Relay_Log_File: db03-relay-bin.000002
                Relay_Log_Pos: 283
        Relay_Master_Log_File: mysql-bin.000008
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
------------------------------- 省略 ---------------------------------
					SQL_Delay: 3600
          SQL_Remaining_Delay: NULL

四、半同步複製

#半同步複製基於非同步複製而來

#修改從庫配置檔案
[root@db04 ~]# vim /etc/my.cnf
[mysqld]
server_id=4
rpl_semi_sync_slave_enabled =1

#先確認主從的MySQL伺服器是否支援動態增加外掛
mysql> show global variables like 'have_dynamic_loading';
+----------------------+-------+
| Variable_name        | Value |
+----------------------+-------+
| have_dynamic_loading | YES   |
+----------------------+-------+
1 row in set (0.00 sec)

#分別在主從庫上安裝對用外掛
-- 主庫安裝外掛
mysql> INSTALL PLUGIN rpl_semi_sync_master SONAME'semisync_master.so';
Query OK, 0 rows affected (0.01 sec)

-- 主庫開啟半同步複製
mysql> SET GLOBAL rpl_semi_sync_master_enabled = 1;
Query OK, 0 rows affected (0.00 sec)
mysql> SET GLOBAL rpl_semi_sync_master_timeout = 1000;
Query OK, 0 rows affected (0.00 sec)

-- 從庫安裝外掛
mysql> install plugin rpl_semi_sync_slave soname 'semisync_slave.so';
Query OK, 0 rows affected (0.20 sec)

#編輯主庫配置檔案
[root@db01 ~]# vim /etc/my.cnf
[mysqld]
server_id=1
log_bin=mysql-bin
rpl_semi_sync_master_enabled=1         
rpl_semi_sync_master_timeout=1000

#從庫開啟半同步複製
mysql> set global rpl_semi_sync_slave_enabled=1;
Query OK, 0 rows affected (0.07 sec)
#重啟io執行緒使其生效
mysql> stop slave io_thread;
mysql> start slave io_thread;

#檢視binlog
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set                        |
+------------------+----------+--------------+------------------+-------------------------------+
| mysql-bin.000009 |      120 |              |                  | 0e2277b0-1e92-11eb-b4de-000c29577624:1-2 |
+------------------+----------+--------------+------------------+-------------------------------+
1 row in set (0.00 sec)


[root@db04 ~]# mysql
mysql> change master to
    -> master_host='172.16.1.51',
    -> master_user='zzc',
    -> master_password='123',
    -> master_port=3306,
    -> master_log_file='mysql-bin.000009',
    -> master_log_pos=120;

mysql> start slave;
Query OK, 0 rows affected (0.00 sec)


-- 主庫檢視
mysql> show status like 'Rpl_semi_sync_master_status';
+-----------------------------+-------+
| Variable_name               | Value |
+-----------------------------+-------+
| Rpl_semi_sync_master_status | ON    |
+-----------------------------+-------+
1 row in set (0.00 sec)

-- 從庫檢視
mysql> show status like 'Rpl_semi_sync_slave_status';
+----------------------------+-------+
| Variable_name              | Value |
+----------------------------+-------+
| Rpl_semi_sync_slave_status | ON    |
+----------------------------+-------+
1 row in set (0.00 sec)
#這兩個變數常用來監控主從是否執行在半同步複製模式下。

五、GTID的主從複製

#主庫
[root@db01 ~]# vim /etc/my.cnf
[mysqld]
server_id=1
log_bin=mysql-bin

rpl_semi_sync_master_enabled=1         
rpl_semi_sync_master_timeout=1000

log-slave-updates
gtid_mode=on
enforce_gtid_consistency=on

#從庫1
[root@db56 ~]# vim /etc/my.cnf
[mysqld]
server_id=6
log_bin=mysql-bin
log-slave-updates
gtid_mode=on
enforce_gtid_consistency=on


mysql> change master to
    -> master_host='172.16.1.51',
    -> master_user='zzc',
    -> master_password='123',
    -> master_port=3306,
    -> master_log_file='mysql-bin.000009',
    -> master_log_pos=120;
    -> master_auto_position=1;

mysql> start slave;
Query OK, 0 rows affected (0.00 sec)

mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 172.16.1.51
                  Master_User: rep
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000009
          Read_Master_Log_Pos: 151
               Relay_Log_File: db02-relay-bin.000002
                Relay_Log_Pos: 361
        Relay_Master_Log_File: mysql-bin.000009
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes