mysql主从搭建(二进制脚本安装)

Posted 2022-04-17 小怪獣55

1.二进制方式脚本安装mysql

1.1.准备文件

配置文件:my.cnf

安装包:mysql-5.6.42-linux-glibc2.12-x86_64.tar.gz

安装脚本:mysql-install.sh

1.2.my.cnf

[mysqld]
socket=/data/mysql/mysql.sock
user=mysql
symbolic-links=0
datadir=/data/mysql
innodb_file_per_table=1
max_connections=10000

[client]
port=3306
socket=/var/lib/mysql/mysql.sock

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/tmp/mysql.sock

1.3.mysql-install.sh

#!/bin/bash
DIR=`pwd`
NAME="mysql-5.6.42-linux-glibc2.12-x86_64.tar.gz"
FULL_NAME=$DIR/$NAME
DATA_DIR="/data/mysql"
apt-get install libaio* -y

if [ -f $FULL_NAME ];then
    echo "安装文件存在"
else
    echo "安装文件不存在"
    exit 3
fi
if [ -h /usr/local/mysql ];then
    echo "Mysql 已经安装"
    exit 3 
else
    tar xvf $FULL_NAME   -C /usr/local/src
    ln -sv /usr/local/src/mysql-5.6.42-linux-glibc2.12-x86_64  /usr/local/mysql
    if id  mysql;then
        echo "mysql 用户已经存在，跳过创建用户过程"
    else 
        useradd  mysql  -s /sbin/nologin
    fi
        
    if  id  mysql;then
        chown  -R mysql.mysql  /usr/local/mysql/* -R
        if [ ! -d  /data/mysql ];then
            mkdir -pv /data/mysql /var/lib/mysql && chown  -R mysql.mysql  /data/mysql   -R
            /usr/local/mysql/scripts/mysql_install_db  --user=mysql --datadir=/data/mysql  --basedir=/usr/local/mysql/
        cp  /usr/local/src/mysql-5.6.42-linux-glibc2.12-x86_64/support-files/mysql.server /etc/init.d/mysqld
        chmod a+x /etc/init.d/mysqld
        cp $DIR/my.cnf   /etc/my.cnf
        ln -sv /usr/local/mysql/bin/mysql  /usr/bin/mysql
        ln -sv /data/mysql/mysql.sock  /var/lib/mysql/mysql.sock
        /etc/init.d/mysqld start
    else
            echo "MySQL数据目录已经存在,"
            exit 3
    fi
    fi
fi

2.主数据库配置

2.1.配置文件修改

vim /etc/my.cnf
-------------------------------------
server_id=53
log_bin=/data/logbin/mysql_bin_log #注意/data/logbin/目录权限,改为mysql
-------------------------------------

systemctl daemon-reload

2.2.授权及用户创建

mysql> GRANT REPLICATION SLAVE,REPLICATION CLIENT ON *.* TO rsync-user@192.168.47.% IDENTIFIED BY 123456;

2.3.测试

#创建一个库测试
create database taowenwu;

2.4.查看二进制Position

mysql> show master status;
+----------------------+----------+--------------+------------------+-------------------+
| File                 | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+----------------------+----------+--------------+------------------+-------------------+
| mysql_bin_log.000001 |      309 |              |                  |                   |
+----------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

2.5.备份

/usr/local/mysql/bin/mysqldump --all-databases --single_transaction --flush-logs --master-data=2 --lock-tables > /data/backup.sql
scp /data/backup.sql 192.168.47.54:/data/

3.从数据库配置

3.1.配置文件修改

vim /etc/my.cnf
-------------------------------------
server_id=54
-------------------------------------

3.2.数据还原

root@ubuntu:/data# mysql <  /data/backup.sql

3.3.使用有复制权限的用户账号连接至主服务器,并启动复制线程

CHANGE MASTER TO MASTER_HOST=192.168.47.53, \\
MASTER_USER=rsync-user,MASTER_PASSWORD=123456, \\
MASTER_LOG_FILE=mysql_bin_log.000001,MASTER_LOG_POS=309;

#启动
START SLAVE

3.4.查看

mysql> show slave status\\G;