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 [root@Mysql ~]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. ``` #修改密码 ```sql mysql> set password='1'; Query OK, 0 rows affected (0.00 sec) ``` #退出，使用新密码登录 ```sql mysql> quit Bye #登录 [root@Mysql ~]# mysql -uroot -p1 ``` #创建eleme数据库 ```sql mysql> create database if not exists eleme charset utf8mb4; Query OK, 1 row affected (0.00 sec) ``` #使用数据库 ```sql mysql> use eleme; Database changed ``` #创建表t_user ```sql 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 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 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 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 mysql> create user 'Slave01'@'%' identified by '1'; mysql> create user 'Slave02'@'%' identified by '1'; ``` #授权 ```sql mysql> grant replication slave on *.* to 'Slave01'@'%'; mysql> grant replication slave on *.* to 'Slave02'@'%'; ``` #刷新 ```sql mysql> flush privileges; ``` #查看 ```sql 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 mysql> flush tables with read lock; Query OK, 0 rows affected (0.00 sec) ``` #查看二进制文件 ```sql 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 [email protected]:\~/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 [email protected]:/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 [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 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 mysql> start slave; Query OK, 0 rows affected (0.00 sec) ``` #查看slave状态 ```sql 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 [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 ```sql 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 [root@Slave01 ~]# mysql -uSlave01 -p1 -h 192.168.1.29 -P3306 --get-server-public-key mysql> quit Bye ``` #登录 ```sql [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 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 mysql> start slave; Query OK, 0 rows affected (0.01 sec) ``` #查看 ```sql 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 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 