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