MySQL 5.7 主从数据库搭建

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1. 数据库安装

安装 MySQL5.7，主数据库为 192.168.2.221，从数据库为 192.168.2.222，服务器内存 8G

sudo apt-get install mysql-server

2. 主数据库配置

• 修改 /etc/mysql/my.cnf

  #master

  [mysqld]

  #common
  port = 3306
  bind-address = 0.0.0.0
  skip-name-resolve
  max_connections = 512

  #replicate
  server_id = 1
  #replicate database
  binlog-do-db = test
  log_bin = mysql-bin

  #innodb
  innodb_buffer_pool_size = 6G
  innodb_flush_method = O_DIRECT
  innodb_log_buffer_size = 16M
  innodb_log_file_size = 2G
  innodb_log_files_in_group = 2

  sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

• 进入数据库，添加同步用户

  shell>mysql -uroot -p

  mysql>create user‘repl’@’%’identified by‘password’;
  mysql>grant replication slave on * . * to‘repl’@’%’;

• 记录 master 信息，File 和 Position

  mysql>show master status\G
  ***************** 1. row *****************
  File: mysql-bin.000001
  Position: 154
  Binlog_Do_DB: test
  Binlog_Ignore_DB:
  Executed_Gtid_Set:

• 重启数据库

  sudo /etc/init.d/mysql restart

3. 从数据库配置

• 修改 /etc/mysql/my.cnf

  #slave

  [mysqld]

  #common
  port = 3306
  bind-address = 0.0.0.0
  skip-name-resolve
  max_connections = 512

  #replicate
  server_id = 2
  #replicate database
  replicate-do-db = test

  #innodb
  innodb_buffer_pool_size = 6G
  innodb_flush_method = O_DIRECT
  innodb_log_buffer_size = 16M
  innodb_log_file_size = 2G
  innodb_log_files_in_group = 2
  sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

• 配置 slave

  shell>mysql -uroot -p
  mysql>change master to master_host =’192.168.2.221’,master_port=3306,master_user=’repl’,master_password=’password’,master_log_file=’mysql-bin.000001’,master_log_pos=154;
  mysql>start slave;

• 重启数据库

  shell>sudo /etc/init.d/mysql restart
  shell>mysql -uroot -p
  mysql>show slave status\G;
  ***************** 1. row *****************
  Slave_IO_State: Waiting for master to send event
  Master_Host: 192.168.2.221
  Master_User: repl
  Master_Port: 3306
  Connect_Retry: 60
  Master_Log_File: mysql-bin.000006
  Read_Master_Log_Pos: 84848971
  Relay_Log_File: database-2-relay-bin.000018
  Relay_Log_Pos: 84849184
  Relay_Master_Log_File: mysql-bin.000006
  Slave_IO_Running: Yes
  Slave_SQL_Running: Yes
  Replicate_Do_DB: test
  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: 84848971
  Relay_Log_Space: 84849443
  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
  Master_UUID: afa582dc-2628-11e6-9226-408d5ce1124f
  Master_Info_File: /var/lib/mysql/master.info
  SQL_Delay: 0
  SQL_Remaining_Delay: NULL
  Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
  Master_Retry_Count: 86400
  Master_Bind:
  Last_IO_Error_Timestamp:
  Last_SQL_Error_Timestamp:
  Master_SSL_Crl:
  Master_SSL_Crlpath:
  Retrieved_Gtid_Set:
  Executed_Gtid_Set:
  Auto_Position: 0
  Replicate_Rewrite_DB:
  Channel_Name:
  Master_TLS_Version:

• 连接成功

4. 批量插入性能

批量插入语句

insert into mt_data(mac,time,device_id,intensity,ap_mac,channel,virtual_type)values(……)*n

n 为 300 时，每秒插入达到 35000 条数据

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