MySQL5.7主从同步、读写分离

环境：CentOS7.9

工具：Xshell 7

安装MySQL5.7

下载rpm包

wget \

https://cdn.mysql.com/archives/mysql-5.7/mysql-community-client-5.7.32-1.el7.x86_64.rpm

https://cdn.mysql.com/archives/mysql-5.7/mysql-community-common-5.7.32-1.el7.x86_64.rpm

https://cdn.mysql.com/archives/mysql-5.7/mysql-community-libs-5.7.32-1.el7.x86_64.rpm

https://cdn.mysql.com/archives/mysql-5.7/mysql-community-libs-compat-5.7.32-1.el7.x86_64.rpm

https://cdn.mysql.com/archives/mysql-5.7/mysql-community-server-5.7.32-1.el7.x86_64.rpm

安装

yum install -y mysql-community-*-5.7.32-1.el7.x86_64.rpm

启动mysql查看密码

cat /var/log/mysqld.log | grep password

登录mysql

mysql -u root -p

主从同步

关闭每台服务器的防火墙和selinux

systemctl disable --now firewalld

setenforce 0

主从服务器时间同步

主服务器使用本地时钟源

yum -y install ntp

修改配置文件

vi /etc/ntp.conf

server 127.127.136.0

fudge 127.127.136.0 stratum 8

开启ntpd

systemctl start ntpd

从服务器同步主服务器时间

安装ntp工具

启动ntp和主服务器进行时间同步

主服务器mysql配置

修改配置文件

vi /etc/my.conf

server_id = 11

log_bin=master_bin

log_slave_updates=true

重启mysql

给从服务器权限

grant replication slave on *.* to 'myslave'@'43.248.136.%' identified by '1234';  

出现错误

用 alter user修改密码

密码政策出错

set global validate_password_length=4;

set global validate_password_policy=0;

alter user root@localhost identified by '1234';

查看日志位置

配置从服务器并重启

Vi /etc/my.conf

server-id = 2

relay-log=relay-log-bin

relay-log-index=slave-relay-bin.index

登录mysql配置主从同步

change master to master_host='43.248.136.97',master_user='myslave',master_password='1234',master_log_file='master-bin.000001',master_log_pos=154;

start slave;

show slave status\G;

测试

读写分离

关闭防火墙

systemctl  stop firewalld

setenforce 0

Amoeba服务器环境安装

安装jdk

1、查看yum库中有哪些版本

yum search java|grep jdk

2、选择指定版本安装，yum源安装的是OpenJDK

yum install java-1.8.0-openjdk*

3、安装完成后查看版本

Java -version

4、修改配置文件

cd /usr/lib/jvm

ls

vi /etc/profile

安装amoeba

创建amoeba文件夹，使用rz命令从本地放入系统，解压文件

tar -zxf amoeba-mysql-binary-2.2.0.tar.gz

设置文件夹权限

查看是否安装完成

如果这种报错

修改 vi /usr/local/amoeba/bin/amoeba

配置Amoeba读写分离

Mysql服务器添加权限和用户开放给amoeba

grant all on *.* to ‘anyu’@'43.248.136.%' identified by '123.com';

配置amoeba服务器文件

vi conf/amoeba.xml

vi conf/dbServers.xml

启动

查看服务是否成功，监听端口为8066为成功启动