mysql設計與優化（二）——配置主從

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目錄

• mysql設計與優化（二）——配置主從
• 1 操作
  • 1.1 安裝mysql-5.7.26-1.el7.x86_64
  • 1.2 配置檔案
  • 1.3 主從配置
  • 1.4 設定使用者，授權
  • 1.5 開通埠

背景描述：

老闆讓部署主從。

1 操作

1.1 安裝mysql-5.7.26-1.el7.x86_64

> cd /usr/local/src/
> wget http://dev.mysql.com/get/mysql-5.7.26-1.el7.x86_64.rpm-bundle.tar
> tar -vxf mysql-5.7.26-1.el7.x86_64.rpm-bundle.tar
> rpm -e --nodeps mariadb-libs
> rpm -ivh mysql-community-common-5.7.26-1.el7.x86_64.rpm
> rpm -ivh mysql-community-libs-5.7.26-1.el7.x86_64.rpm
> rpm -ivh mysql-community-client-5.7.26-1.el7.x86_64.rpm
> rpm -ivh mysql-community-server-5.7.26-1.el7.x86_64.rpm
 

1.2 配置檔案

• 主機配置 vim /etc/my.cnf

#需新增的配置
sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
server-id=1
innodb_flush_log_at_trx_commit=2
sync_binlog=1
log-bin=mysql-bin-1

• 從機配置 vim /etc/my.cnf

sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
server-id=2
innodb_flush_log_at_trx_commit=2 
sync_binlog=1 
log-bin=mysql-bin-2
 

1.3 主從配置

進入主機mysq;

GRANT REPLICATION SLAVE ON *.* to 'repl'@'168.160.19.35' identified by 'SEC90opl;./';
show master status;

+--------------------+----------+--------------+------------------+-------------------+
| File               | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+--------------------+----------+--------------+------------------+-------------------+
| mysql-bin-1.000001 |      449 |              |                  |                   |
+--------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

把file列和Position列記錄下來，一會配置slave要用到

 

從機配置

change master to master_host='168.160.17.24',master_user='repl' ,master_password='SEC90opl;./', master_log_file='mysql-bin-1.000001' ,master_log_pos=449;
start slave;
show slave status;

1.4 設定使用者，授權

> systemctl start mysqld.service
#檢視預設密碼
mysql>> grep "password" /var/log/mysqld.log
mysql>> CREATE USER 'ecApp'@'168.160.19.%' IDENTIFIED BY 'SEC90opl;./';
mysql>> grant ALL PRIVILEGES on ecdb.* to ecApp@'168.160.19.%' identified by 'SEC90opl;./';
mysql>> flush privileges; 

1.5 開通埠

> firewall-cmd --zone=public --add-port=3306/tcp --permanent
> firewall-cmd --reload
> netstat -tunlp
#關閉防火牆
> systemctl stop firewalld.service

這樣部署可以實現讀寫分離，從機備份主機的資料，提高安全性。

但是隻能主機寫，從機只能查詢，而且還需要調整程式碼。不算最好的解決方案。