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[经验分享] MYSQL主从环境搭建

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发表于 2018-10-5 09:46:36 | 显示全部楼层 |阅读模式
  服务器:
  192.168.11.131master
  192.168.11.132slave
  服务器系统
  # cat /etc/redhat-release

  CentOS Linux>  1、下面安装过程两个节点操作相同
  # rpm -qa | grep mariadb
  postfix-2.10.1-6.el7.x86_64
  # rpm -qa | grep mariadb
  mariadb-libs-5.5.44-2.el7.centos.x86_64
  # rpm -ev postfix-2.10.1-6.el7.x86_64
  # rpm -ev mariadb-libs-5.5.44-2.el7.centos.x86_64
  # rpm -ivh mysql-community-common-5.7.18-1.el7.x86_64.rpm
  # rpm -ivh mysql-community-libs-5.7.18-1.el7.x86_64.rpm
  # rpm -ivh mysql-community-client-5.7.18-1.el7.x86_64.rpm
  # rpm -ivh mysql-community-server-5.7.18-1.el7.x86_64.rpm
  设置开机启动
  # systemctl enable mysqld.service
  2、两节点配置
  创建目录
  # mkdir /data/mysql_data
  # chown -R mysql:mysql /data/mysql_data
  编辑配置文件
  # vi /etc/my.cnf
  datadir=/data/mysql_data
  character_set_server=utf8
  sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'
  # innodb optimization
  innodb_buffer_pool_size=8G
  innodb_log_file_size=256M
  innodb_flush_method=O_DIRECT
  max_connections=500
  innodb_autoextend_increment=128
  启动服务
  # service mysqld start
  主节点密码
  # cat /var/log/mysqld.log
  A temporary password is generated for root@localhost: l+7jtY6QEfut
  从节点密码
  # cat /var/log/mysqld.log
  A temporary password is generated for root@localhost: sLxt;f?671RO
  mysql> set password=password('Password123!');
  密码随意设置(符合规则就行)
  关闭服务
  # service mysqld stop
  3、主节点配置
  # vi /etc/my.cnf
  server-id=1
  log-bin=mysql-bin
  binlog_format=mixed
  innodb_flush_log_at_trx_commit=1
  sync_binlog=1
  expire_logs_days=15
  relay_log=mysql-realy-bin
  4、从节点配置
  # vi /etc/my.cnf
  server-id=2
  log_bin=mysql-bin
  relay_log=mysql-relay-bin
  log-slave-updates=on
  expire_logs_days=15
  replicate-ignore-db=sys
  replicate-ignore-db=mysql
  replicate-ignore-db=information_schema
  replicate-ignore-db=performance_schema
  启动服务
  # service mysqld start
  5、主节点配置同步

  mysql> create user repluser@'%'>  Query OK, 0 rows affected (0.00 sec)
  mysql> grant replication slave, replication client on *.* to repluser@'%';
  Query OK, 0 rows affected (0.00 sec)
  mysql> flush privileges;
  Query OK, 0 rows affected (0.01 sec)
  mysql> show master status;
  +------------------+----------+--------------+------------------+-------------------+
  | File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
  +------------------+----------+--------------+------------------+-------------------+
  | mysql-bin.000001 |     2165 |              |                  |                   |
  +------------------+----------+--------------+------------------+-------------------+
  6、从节点配置同步
  mysql> CHANGE MASTER TO MASTER_HOST='192.168.11.131', MASTER_USER='repluser', MASTER_PASSWORD='Password123!', MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=2165;
  Query OK, 0 rows affected, 2 warnings (0.00 sec)
  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: 192.168.11.131
  Master_User: repluser
  Master_Port: 3306
  Connect_Retry: 60
  Master_Log_File: mysql-bin.000001
  Read_Master_Log_Pos: 2165
  Relay_Log_File: mysql-relay-bin.000002

  >
  >  Slave_IO_Running: Yes
  Slave_SQL_Running: Yes
  Replicate_Do_DB:
  Replicate_Ignore_DB: sys,mysql,information_schema,performance_schema
  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: 2165

  >  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: ce43b0d9-7f3e-11e8-abc5-063f580099bf
  Master_Info_File: /var/lib/mysql/master.info
  SQL_Delay: 0
  SQL_Remaining_Delay: NULL

  Slave_SQL_Running_State: Slave has read all>  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:
  1 row in set (0.00 sec)
  误给用户赋予了权限,故删除用户
  mysql> drop user missingcust@'%';
  7、两节点验证
  主节点配置验证:
  mysql> create database ceshi_db;
  Query OK, 1 row affected (0.00 sec)
  mysql> use ceshi_db;
  Database changed
  mysql> create table home(id int(10) not null,name char(10));
  Query OK, 0 rows affected (0.02 sec)
  从节点验证;
  mysql> show databases;
  +--------------------+
  | Database           |
  +--------------------+
  | information_schema |
  | ceshi_db           |
  | mysql              |
  | performance_schema |
  | sys                |
  +--------------------+
  5 rows in set (0.00 sec)
  mysql> use ceshi_db;
  Reading table information for completion of table and column names
  You can turn off this feature to get a quicker startup with -A
  Database changed
  mysql> show tables;
  +--------------------+
  | Tables_in_ceshi_db |
  +--------------------+
  | home               |
  +--------------------+
  1 row in set (0.00 sec)


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