centos7 mysql5.7主從數據遷移

1、說明

主從爲rpm包安裝方式，版本爲mysql-5.7.18-1.el7.x86_64.rpm-bundle.tar

配置 /data/mysql_data 爲數據存放目錄

主從配置文件如下所示：

主服務器：

# egrep -v "^$|^#" /etc/my.cnf

[mysqld]

socket=/var/lib/mysql/mysql.sock

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'

symbolic-links=0

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

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

從服務器：

# egrep -v "^$|^#" /etc/my.cnf

[mysqld]

socket=/var/lib/mysql/mysql.sock

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'

symbolic-links=0

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

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

2、變更步驟

首先關閉主從數據庫服務

修改配置文件 /etc/my.cnf ，我這裏只修改下面一行

datadir=/data/mysql_data

>>

datadir=data /opt/tmp/mysql_data

然後把數據庫數據目錄拷貝到目標目錄下，這裏遷移到 /opt/tmp 目錄下

# cp -a /data/mysql_data /opt/tmp/

最後啓動主從mysql服務，並進行驗證