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

$root@Mysql \~$ # mysql -uroot -p

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

#修改密码

mysql> set password='1';

Query OK, 0 rows affected (0.00 sec)

#退出，使用新密码登录

mysql> quit

Bye

#登录

$root@Mysql \~$ # mysql -uroot -p1

#创建eleme数据库

mysql> create database if not exists eleme charset utf8mb4;

Query OK, 1 row affected (0.00 sec)

#使用数据库

mysql> use eleme;

Database changed

#创建表t_user

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

mysql> desc t_user;

+----------+-------------+------+-----+---------+----------------+

+----------+-------------+------+-----+---------+----------------+

| id | int(11) | NO | PRI | NULL | auto_increment |

+----------+-------------+------+-----+---------+----------------+

5 rows in set (0.01 sec)

#向表中添加数据

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

mysql> select * from t_user;

+----+-----------------+----------+----------+-----------------+

+----+-----------------+----------+----------+-----------------+

+----+-----------------+----------+----------+-----------------+

2 rows in set (0.00 sec)

#为从服务器添加用户

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

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

#授权

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

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

#刷新

mysql> flush privileges;

#查看

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

mysql> flush tables with read lock;

Query OK, 0 rows affected (0.00 sec)

#查看二进制文件

mysql> show master status;

+---------------+----------+--------------+------------------+-------------------+

+---------------+----------+--------------+------------------+-------------------+

| 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

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

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

mysql> start slave;

Query OK, 0 rows affected (0.00 sec)

#查看slave状态

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

$root@Mysql \~$ # 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

mysql> show master status;

+---------------+----------+--------------+------------------+-------------------+

+---------------+----------+--------------+------------------+-------------------+

| binlog.000002 | 458 | | | |

+---------------+----------+--------------+------------------+-------------------+

1 row in set (0.00 sec)

#回到slave操作

#获得公钥

$root@Slave01 \~$ # mysql -uSlave01 -p1 -h 192.168.1.29 -P3306 --get-server-public-key

mysql> quit

Bye

#登录

$root@Slave01 \~$ # mysql -uroot -p

#停止slave

mysql> stop slave;

Query OK, 0 rows affected (0.00 sec)

#与master建立连接

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

mysql> start slave;

Query OK, 0 rows affected (0.01 sec)

#查看

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

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;

+----+-----------------+----------+----------+-----------------+

+----+-----------------+----------+----------+-----------------+

+----+-----------------+----------+----------+-----------------+

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) 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

(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