实验环境:

master  192.168.132.121 主库

slave     192.168.132.122 从库

一 mysql主从复制的配置

1.1 mysql主库给从库复制的权限

mysql> grant replication slave on *.* to 'replication'@'192.168.132.122' identified by '';   #主库需要给从库复制的权限,一般从都有自己的ip,一台从库放开一个ip
ERROR (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id:
Current database: *** NONE ***
Query OK, rows affected, warning (0.01 sec)
mysql> flush privileges;
Query OK, rows affected (0.00 sec)
mysql> reset master;
Query OK, rows affected (0.01 sec)
mysql> show master logs;
+-------------------+-----------+
| Log_name | File_size |
+-------------------+-----------+
| master-bin. | |
+-------------------+-----------+
row in set (0.00 sec) mysql> show binlog events in 'master-bin.000001';
+-------------------+-----+----------------+-----------+-------------+---------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+-------------------+-----+----------------+-----------+-------------+---------------------------------------+
| master-bin. | | Format_desc | | | Server ver: 5.7.-log, Binlog ver: |
| master-bin. | | Previous_gtids | | | |
+-------------------+-----+----------------+-----------+-------------+---------------------------------------+

1.2 从库使用命令去同步主库的数据

从库使用命令去同步主库。主库ip、主库端口、用户名、密码、binlog文件名、索引

mysql> change master to master_host='192.168.132.121',master_port=,master_user='replication',master_password='',master_log_file='master-bin.000001',master_log_pos=;
Query OK, rows affected, warnings (0.02 sec) mysql> start slave; #开启salve
Query OK, rows affected (0.00 sec)
mysql> show slave status\G;
*************************** . row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.132.121
Master_User: replication
Master_Port:
Connect_Retry:
Master_Log_File: master-bin.
Read_Master_Log_Pos:
Relay_Log_File: relay-log.
Relay_Log_Pos:
Relay_Master_Log_File: master-bin.
Slave_IO_Running: Yes #IO进程
Slave_SQL_Running: Yes #SQL进程
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno:
Last_Error:
Skip_Counter:
Exec_Master_Log_Pos:
Relay_Log_Space:
Until_Condition: None
Until_Log_File:
Until_Log_Pos:
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 #表示延时
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno:
Last_IO_Error:
Last_SQL_Errno:
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id:
Master_UUID: 77278e78-9da8-11e9-bc6c-000c2991dd19
Master_Info_File: /data/mysql/master.info
SQL_Delay:
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count:
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position:
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
row in set (0.01 sec)

show processlist;   #查看主从同步的进程

主端:
mysql> show processlist;
+----+-------------+-----------------------+------+-------------+------+---------------------------------------------------------------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+-------------+-----------------------+------+-------------+------+---------------------------------------------------------------+------------------+
| | root | localhost | NULL | Query | | starting | show processlist |
| | replication | 192.168.132.122: | NULL | Binlog Dump | | Master has sent all binlog to slave; waiting for more updates | NULL |
+----+-------------+-----------------------+------+-------------+------+---------------------------------------------------------------+------------------+
从端:
mysql> show processlist;
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+
| | root | localhost | NULL | Query | | starting | show processlist |
| | system user | | NULL | Connect | | Waiting for master to send event | NULL |
| | system user | | NULL | Connect | | Slave has read all relay log; waiting for more updates | NULL |
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+

二 验证

创建库、创建表、增删改查验证同步是否正常,查看binlog日志

2.1 创建库

主端建库
mysql> create database darren;
Query OK, row affected (0.00 sec) mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| darren |
| mysql |
| performance_schema |
| sys |
+--------------------+
rows in set (0.00 sec) mysql> show master logs;
+-------------------+-----------+
| Log_name | File_size |
+-------------------+-----------+
| master-bin. | |
+-------------------+-----------+
row in set (0.00 sec) mysql> show binlog events in 'master-bin.000001';
+-------------------+-----+----------------+-----------+-------------+---------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+-------------------+-----+----------------+-----------+-------------+---------------------------------------+
| master-bin. | | Format_desc | | | Server ver: 5.7.-log, Binlog ver: |
| master-bin. | | Previous_gtids | | | |
| master-bin. | | Anonymous_Gtid | | | SET @@SESSION.GTID_NEXT= 'ANONYMOUS' |
| master-bin. | | Query | | | create database darren |
+-------------------+-----+----------------+-----------+-------------+---------------------------------------+
从端查看
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| darren |
| mysql |
| performance_schema |
| sys |
+--------------------+
rows in set (0.00 sec) mysql> show slave status\G;
*************************** . row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.132.121
Master_User: replication
Master_Port:
Connect_Retry:
Master_Log_File: master-bin.000001
Read_Master_Log_Pos: 319 #读到的偏移量,和master查看的偏移相同,数据已经读完,并同步
Relay_Log_File: relay-log.
Relay_Log_Pos:
Relay_Master_Log_File: master-bin.
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:
Last_Error:
Skip_Counter:
Exec_Master_Log_Pos:
Relay_Log_Space:
Until_Condition: None
Until_Log_File:
Until_Log_Pos:
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master:
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno:
Last_IO_Error:
Last_SQL_Errno:
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id:
Master_UUID: 77278e78-9da8-11e9-bc6c-000c2991dd19
Master_Info_File: /data/mysql/master.info
SQL_Delay:
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count:
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position:
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
row in set (0.00 sec)

2.2 其他命令,增删改查验证

主端查看表为空
mysql> use darren;
Database changed
mysql> show tables;
Empty set (0.00 sec)
从端也一样
mysql> use darren;
Database changed
mysql> show tables;
Empty set (0.00 sec)
主端建表
mysql> create table test (id int);
Query OK, rows affected (0.01 sec) mysql> show tables;
+------------------+
| Tables_in_darren |
+------------------+
| test |
+------------------+
row in set (0.00 sec)
从端查看
mysql> show tables;
+------------------+
| Tables_in_darren |
+------------------+
| test |
+------------------+
主端插入数据:
mysql> insert into test values ();
Query OK, row affected (0.00 sec) mysql> select * from test;
+------+
| id |
+------+
| |
+------+
从端:
mysql> select * from test;
+------+
| id |
+------+
| |
+------+
继续插入数据:
mysql> insert into test values ();
Query OK, row affected (0.00 sec) mysql> insert into test values ();
Query OK, row affected (0.00 sec) mysql> insert into test values ();
Query OK, row affected (0.00 sec)
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| master-bin. | | | | |
+-------------------+----------+--------------+------------------+-------------------+
从端
mysql> select * from test;
+------+
| id |
+------+
| |
| |
| |
| |
+------+
rows in set (0.00 sec) mysql> show slave status\G;
*************************** . row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.132.121
Master_User: replication
Master_Port:
Connect_Retry:
Master_Log_File: master-bin.
Read_Master_Log_Pos:
Relay_Log_File: relay-log.
Relay_Log_Pos:
Relay_Master_Log_File: master-bin.
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:
Last_Error:
Skip_Counter:
Exec_Master_Log_Pos:
Relay_Log_Space:
Until_Condition: None
Until_Log_File:
Until_Log_Pos:
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master:
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno:
Last_IO_Error:
Last_SQL_Errno:
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id:
Master_UUID: 77278e78-9da8-11e9-bc6c-000c2991dd19
Master_Info_File: /data/mysql/master.info
SQL_Delay:
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count:
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position:
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
主端删除表
mysql> delete from test;
Query OK, rows affected (0.01 sec)
mysql> select * from test;
Empty set (0.00 sec)
从端:
mysql> select * from test;
Empty set (0.00 sec)
主端删除库
mysql> drop database darren;
Query OK, row affected (0.01 sec) mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
从端:
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+

基本的配置完成,实现基本的同步功能!

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