云计算实训33——高并发负载均衡项目(eleme)

一、配置一主两从mysql服务器（mysql5.7）

1.主服务器master

下载mysql5.7的包

[root@Mysql ~]# rz -E

rz waiting to receive.

[root@Mysql ~]# ls

anaconda-ks.cfg mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

#解压

[root@Mysql ~]# tar -zxf mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

#复制

[root@Mysql ~]# cp -r mysql-5.7.44-linux-glibc2.12-x86_64 /usr/local/mysql

#清理环境

[root@Mysql ~]# rm -rf /etc/my.cnf

#创建mysql-files

[root@Mysql ~]# mkdir /usr/local/mysql/mysql-files

#创建账户

[root@Mysql ~]# useradd -r -s /sbin/nologin mysql

#更改用户和组

[root@Mysql ~]# chown mysql:mysql /usr/local/mysql/mysql-files/

#修改权限

[root@Mysql ~]# chmod 750 /usr/local/mysql/mysql-files/

#初始化

[root@Mysql ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql

2024-08-20T07:25:10.817991Z 1 [Note] A temporary password is generated for root@localhost: t6>CSyHJe/s?

#查看mysql目录，看是否有data，有data表明初始化成功

[root@Mysql ~]# ls /usr/local/mysql/

bin data docs include lib LICENSE man mysql-files README share support-files

#复制mysql.server，方便启动服务

[root@Mysql ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql57

#启动服务

[root@Mysql ~]# service mysql57 start

Starting MySQL.Logging to '/usr/local/mysql/data/Mysql.err'.

SUCCESS!

#编辑mysql.conf配置文件

[root@Mysql ~]# vim /usr/local/mysql/my.cnf

#重新启动服务

[root@Mysql ~]# service mysql57 restart

Shutting down MySQL.. SUCCESS!

Starting MySQL.Logging to '/usr/local/mysql/data/db01-master.err'.

SUCCESS!

#写入环境变量，方便登录

[root@Mysql ~]# sed -i ' $aexport PATH=/usr/local/mysql/bin:$ PATH' /etc/profile

[root@Mysql ~]# source /etc/profile

#若在写入环境变量时出错，可运行下面指令进行恢复，随后再次执行写入环境变量的指令即可

[root@Mysql ~]# export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/us

[root@Mysql ~]# source /etc/profile

#登录mysql

#注意这里的密码是前面自动生成的：t6>CSyHJe/s

sql 复制代码

[root@Mysql ~]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.

#修改密码

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mysql> set password='1';
Query OK, 0 rows affected (0.00 sec)

#退出，使用新密码登录

sql 复制代码

mysql> quit
Bye
#登录
[root@Mysql ~]# mysql -uroot -p1

#创建eleme数据库

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mysql> create database if not exists eleme charset utf8mb4;
Query OK, 1 row affected (0.00 sec)

#使用数据库

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mysql> use eleme;
Database changed

#创建表t_user

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mysql> create table t_user(id int primary key auto_increment,name varchar(45) not null,
username varchar(45) not null,password varchar(45) not null,remark varchar(45) not null);
Query OK, 0 rows affected (0.01 sec)

#查看表

sql 复制代码

mysql> desc t_user;
+----------+-------------+------+-----+---------+----------------+
| Field    | Type        | Null | Key | Default | Extra          |
+----------+-------------+------+-----+---------+----------------+
| id       | int(11)     | NO   | PRI | NULL    | auto_increment |
| name     | varchar(45) | NO   |     | NULL    |                |
| username | varchar(45) | NO   |     | NULL    |                |
| password | varchar(45) | NO   |     | NULL    |                |
| remark   | varchar(45) | NO   |     | NULL    |                |
+----------+-------------+------+-----+---------+----------------+
5 rows in set (0.01 sec)

#向表中添加数据

sql 复制代码

mysql>insert into t_user (id,name,username,password,remark)values
("1","超级管理员","admin","admin","超级管理员");
Query OK, 1 row affected (0.00 sec)

mysql>insert into t_user (id,name,username,password,remark)values
("2","普通用户","guest","guest","普通用户");
Query OK, 1 row affected (0.01 sec)

#查看表中数据

sql 复制代码

mysql> select * from t_user;
+----+-----------------+----------+----------+-----------------+
| id | name            | username | password | remark          |
+----+-----------------+----------+----------+-----------------+
|  1 | 超级管理员      | admin    | admin    | 超级管理员      |
|  2 | 普通用户        | guest    | guest    | 普通用户        |
+----+-----------------+----------+----------+-----------------+
2 rows in set (0.00 sec)

#为从服务器添加用户

sql 复制代码

mysql> create user 'Slave01'@'%' identified by '1';

mysql> create user 'Slave02'@'%' identified by '1';

#授权

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mysql> grant replication slave on *.* to 'Slave01'@'%';

mysql> grant replication slave on *.* to 'Slave02'@'%';

#刷新

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mysql> flush privileges;

#查看

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mysql> select host,user from mysql.user;
+-----------+---------------+
| host      | user          |
+-----------+---------------+
| %         | Slave01       |
| %         | Slave02       |
| localhost | mysql.session |
| localhost | mysql.sys     |
| localhost | root          |
+-----------+---------------+
5 rows in set (0.00 sec)

#锁表

sql 复制代码

mysql> flush tables with read lock;
Query OK, 0 rows affected (0.00 sec)

#查看二进制文件

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mysql> show master status;
+---------------+----------+--------------+------------------+-------------------+
| File          | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+---------------+----------+--------------+------------------+-------------------+
| binlog.000001 |     2594 |              |                  |                   |
+---------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

2.从服务器Slave01

#使用scp将master上的mysql5.7包传给slave

[root@Slave01 ~]# scp root@192.168.1.29:~/mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz ./

#解压

[root@Slave01 ~]# tar -xvf mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

#复制目录

[root@Slave01 ~]# cp -r mysql-5.7.44-linux-glibc2.12-x86_64 /usr/local/mysql

#在master和slave上下载rsync

[root@Slave01 ~]# yum -y install rsync

#在master操作：

[root@Mysql ~]# yum -y install rsync

#删除auto.cnf

[root@Mysql ~]# cd /usr/local/mysql/data/

[root@Mysql data]# ls

auto.cnf ca.pem eleme ib_logfile1 Mysql.pid server-cert.pem

binlog.000001 client-cert.pem ib_buffer_pool ibtmp1 performance_schema server-key.pem

binlog.index client-key.pem ibdata1 mysql private_key.pem sys

ca-key.pem db01-master.err ib_logfile0 Mysql.err public_key.pem

删除文件

[root@Mysql data]# rm -rf auto.cnf

#同步数据

[root@Mysql ~]# rsync -av /usr/local/mysql/data root@192.168.1.30:/usr/local/mysql/

#回到slave操作：

[root@Slave01 ~]# #查看同步

[root@Slave01 ~]# ls /usr/local/mysql/

bin data docs include lib LICENSE man README share support-files

#若存在data目录，则同步成功

[root@Slave01 ~]# #清理环境

[root@Slave01 ~]# rm -rf /etc/my.cnf

[root@Slave01 ~]# mkdir /usr/local/mysql/mysql-files

[root@Slave01 ~]# useradd -r -s /sbin/nologin mysql

[root@Slave01 ~]# chown mysql:mysql /usr/local/mysql/mysql-files/

[root@Slave01 ~]# chmod 750 /usr/local/mysql/mysql-files/

[root@Slave01 ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql57

[root@Slave01 ~]# service mysql57 start

Starting MySQL.Logging to '/usr/local/mysql/data/Slave01.err'.

SUCCESS!

#编辑配置文件

[root@Slave01 ~]# vim /usr/local/mysql/my.cnf

sql 复制代码

[mysqld]
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
port=3310
log-error=/usr/local/mysql/data/db01-slave.err
relay-log=/usr/local/mysql/data/relaylog
server-id=11
character_set_server=utf8mb4

#重启

[root@Slave01 ~]# service mysql57 restart

Shutting down MySQL.. SUCCESS!

Starting MySQL.Logging to '/usr/local/mysql/data/db01-slave.err'.

SUCCESS!

#修改环境变量

[root@Slave01 ~]# sed -i ' $aexport PATH=/usr/local/mysql/bin:$ PATH' /etc/profile

#让配置文件生效

[root@Slave01 ~]# source /etc/profile

[root@Slave01 ~]# mysql -uroot -p

#指定主服务器，实现数据同步

sql 复制代码

mysql> change master to
    -> master_host='192.168.1.29',
    -> master_user='Slave01',
    -> master_password='1',
    -> master_port=3306,
    -> master_log_file='binlog.000001',
    -> master_log_pos=2594;
Query OK, 0 rows affected, 2 warnings (0.27 sec)

#启动slave

sql 复制代码

mysql> start slave;
Query OK, 0 rows affected (0.00 sec)

#查看slave状态

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mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Connecting to master
                  Master_Host: 192.168.1.29
                  Master_User: Slave01
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: binlog.000001
          Read_Master_Log_Pos: 2594
               Relay_Log_File: relaylog.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File: binlog.000001
             Slave_IO_Running: Connecting
            Slave_SQL_Running: Yes

#发现为连接状态，退出

mysql> quit

#回到master,解锁

sql 复制代码

[root@Mysql ~]# service mysql57 restart

[root@Mysql ~]# mysql -uroot -p1

#解锁
mysql> unlock tables;
Query OK, 0 rows affected (0.00 sec)

#重新获取二进制文件

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mysql> show master status;
+---------------+----------+--------------+------------------+-------------------+
| File          | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+---------------+----------+--------------+------------------+-------------------+
| binlog.000002 |      458 |              |                  |                   |
+---------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

#回到slave操作

#获得公钥

sql 复制代码

[root@Slave01 ~]# mysql -uSlave01 -p1 -h 192.168.1.29 -P3306 --get-server-public-key
mysql> quit
Bye

#登录

sql 复制代码

[root@Slave01 ~]# mysql -uroot -p

#停止slave
mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)

#与master建立连接

sql 复制代码

mysql> change master to
    -> master_host='192.168.1.29',
    -> master_user='Slave01',
    -> master_password='1',
    -> master_port=3306,
    -> master_log_file='binlog.000002',
    -> master_log_pos=458;
Query OK, 0 rows affected, 2 warnings (0.02 sec)

#启动slave

sql 复制代码

mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

#查看

sql 复制代码

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.29
                  Master_User: Slave01
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: binlog.000002
          Read_Master_Log_Pos: 458
               Relay_Log_File: relaylog.000002
                Relay_Log_Pos: 317
        Relay_Master_Log_File: binlog.000002
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes

#发现为ok状态，连接成功

#验证同步数据

sql 复制代码

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| eleme              |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.01 sec)

mysql> use eleme;
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> select * from t_user;
+----+-----------------+----------+----------+-----------------+
| id | name            | username | password | remark          |
+----+-----------------+----------+----------+-----------------+
|  1 | 超级管理员      | admin    | admin    | 超级管理员      |
|  2 | 普通用户        | guest    | guest    | 普通用户        |
+----+-----------------+----------+----------+-----------------+
2 rows in set (0.00 sec)

3.从服务器Slave02

配置步骤与Slave01一样

二、搭建mycat

首先下载并且解压安装包

然后复制目录并且改名

[root@mycat ~]# cp -r jdk1.8.0_192/ /usr/local/jdk

[root@mycat ~]# cp -r mycat/ /usr/local/

查看并且配置jdk环境

[root@mycat ~]# sed -i '$aexport JAVA_HOME=/usr/local/jdk' /etc/profile

[root@mycat ~]# source /etc/profile

[root@mycat ~]# sed -i ' $aexport PATH=$ PATH:$JAVA_HOME/bin' /etc/profile

[root@mycat ~]# source /etc/profile

#配置文件

vim /usr/local/mycat/conf/server.xml

"ln"是master创建用于被访问的

去master机器创建

create user 'ln'@'%' identified by '1';

grant all on *.* to 'ln'@'%';

flush privileges;

#编辑配置文件

vim /usr/local/mycat/conf/schema.xml

#启动服务

/usr/local/mycat/bin/mycat start

#检查启动的是否成功

root@mycat ~]# netstat -lnput|grep 8066

tcp6 0 0 :::8066 :::* LISTEN 4547/java

#开启8080端口和3310端口

firewall-cmd --zone=public --add-port=8080/tcp --permanent

firewall-cmd --zone=public --add-port=3310/tcp --permanent

firewall-cmd --reload

三、搭建Java_static

下载下图软件包并且解压jdk包

解压完成以后cp jdk 目录，复制到/usr/local底下

cp -r jdk-17.0.12/ /usr/local/jdk

再部署环境变量

vim /etc/profile

检验Java版本

然后创建一个文件

vim application.yml

再上传一个包直接用Java运行它

java -jar eleme_server-0.0.1-SNAPSHOT.jar

然后去浏览器访问Java_static的地址加8080端口

账户密码都用admin测试

登录成功！

四、使⽤lvs代理java服务

1. ds

(1) 挂载vip

ifconfig ens33:0 192.168.1.41 broadcast 192.168.1.41 netmask 255.255.255.255 up

(2) 为vip添加路由

route add 192.168.1.41 dev ens33:0

(3)安装ipvsadm

yum -y install ipvsadm

ipvsadm -Ln

ipvsadm -C

(4) 设置负载均衡规则

ipvsadm -A -t 192.168.1.41:8080 -s rr

ipvsadm -a -t 192.168.1.41:8080 -r

192.168.1.26 -g

ipvsadm -a -t 192.168.1.41:8080 -r

192.168.1.27 -g

2. rs

(1)挂载vip

ifconfig lo:0 192.168.1.41 broadcast 192.168.1.41 netmask 255.255.255.255 up

(2)为vip 添加路由

route add 192.168.1.41 dev lo:0

(3)抑制接受请求

echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore

echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce

echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore

echo 2 >/proc/sys/net/ipv4/conf/all/arp_announce

五、Nginx 代理端⼝

#设置权重

upstream javagroup {

Server localhost:8080 weight=95;

Server 192 168.71.15:8080 weight=3

Server 192.168.71.16:8080 weight=2;

}

#进入配置文件修改下图内容