1.设置主从从mysql57服务器

1）配置主数据库

[root@msater_5 ~]# systemctl stop filewalld

[root@msater_5 ~]# setenforce 0

[root@msater_5 ~]# systemctl disable filewalld

[root@msater_5 ~]# ls

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

[root@msater_5 ~]# tar -xf mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

[root@msater_5 ~]# cp -r mysql-5.7.44-linux-glibc2.12-x86_64 /usr/local/mysql

[root@msater_5 ~]# rm -rf /etc/my.cnf

[root@msater_5 ~]# mkdir /usr/local/mysql/mysql-files

[root@msater_5 ~]# useradd -r -s /sbin/nologin mysql

[root@msater_5 ~]# chown mysql:mysql /usr/local/mysql/mysql-files

[root@msater_5 ~]# chown 750 /usr/local/mysql/mysql-files

[root@msater_5 ~]# /usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql

2024-08-21T09:39:16.036321Z 0 [Warning] CA certi2024-08-21T09:39:16.384066Z 1 [Note] A temporary password is generated for root@localhost: RV3DtuxCi;A-

[root@msater_5 ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql57

[root@msater_5 ~]# vim /usr/local/mysql/my.cnf

[mysqld]

basedir=/usr/local/mysql

datadir=/usr/local/mysql/data

socket=/tmp/mysql.sock

port=3306

log-error=/usr/local/mysql/data/db01-master.err

log-bin=/usr/local/mysql/data/binlog

server-id=10

character_set_server=utf8mb4

[root@msater_5 ~]# service mysql57 start

[root@msater_5 ~]# /usr/local/mysql/bin/mysql -p

Enter password:

mysql> alter user 'root'@'localhost' identified by 'root';

Query OK, 0 rows affected (0.00 sec)

mysql> create user 'li'@'%' identified by 'li';

Query OK, 0 rows affected (0.00 sec)

mysql> grant all on *.* to 'li'@'%';

uery OK, 0 rows affected (0.01 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.01 sec)

mysql> create user 'slave'@'%' identified by 'slave';

Query OK, 0 rows affected (0.00 sec)

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

Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

2）配置slave01数据库

[root@slave01_5 ~]# ls

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

[root@slave01_5 ~]# systemctl stop firewalld

[root@slave01_5 ~]# systemctl disable firewalld

[root@slave01_5 ~]# setenforce 0

[root@slave01_5 ~]# tar -xf mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

[root@slave01_5 ~]# cp -r mysql-5.7.44-linux-glibc2.12-x86_64 /usr/local/mysql

[root@slave01_5 ~]# rm -rf /etc/my.cnf

[root@slave01_5 ~]# mkdir /usr/local/mysql/mysql-files

[root@slave01_5 ~]# useradd -r -s /sbin/nologin mysql

[root@slave01_5 ~]# chown mysql:mysql /usr/local/mysql/mysql-files/

[root@slave01_5 ~]# chown 750 /usr/local/mysql/mysql-files/

[root@slave01_5 ~]# yum -y install rsync

3）配置slave02数据库

[root@slave01_5 ~]# ls

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

[root@slave01_5 ~]# systemctl stop firewalld

[root@slave01_5 ~]# systemctl disable firewalld

[root@slave01_5 ~]# setenforce 0

[root@slave01_5 ~]# tar -xf mysql-5.7.44-linux-glibc2.12-x86_64.tar.gz

[root@slave01_5 ~]# cp -r mysql-5.7.44-linux-glibc2.12-x86_64 /usr/local/mysql

[root@slave01_5 ~]# rm -rf /etc/my.cnf

[root@slave01_5 ~]# mkdir /usr/local/mysql/mysql-files

[root@slave01_5 ~]# useradd -r -s /sbin/nologin mysql

[root@slave01_5 ~]# chown mysql:mysql /usr/local/mysql/mysql-files/

[root@slave01_5 ~]# chown 750 /usr/local/mysql/mysql-files/

[root@slave01_5 ~]# yum -y install rsync

4）同步data

[root@msater_5 ~]# service mysql57 stop

[root@msater_5 ~]# rm -rf /usr/local/mysql/data/auto.cnf

[root@msater_5 ~]# yum -y install rsync

[root@msater_5 ~]# rsync -av /usr/local/mysql/data root@192.168.2.58:/usr/local/mysql/

[root@msater_5 ~]# rsync -av /usr/local/mysql/data root@192.168.2.59:/usr/local/mysql/

5）修改slave01配置文件

[root@slave01_5 ~]# ls /usr/local/mysql/

bin docs lib man README support-files

data include LICENSE mysql-files share

[root@slave01_5 ~]# 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/err.log

relay-log=/usr/local/mysql/data/relaylog

character_set_server=utf8mb4

server-id=11

[root@slave01_5 ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql57

[root@slave01_5 ~]# sed -i ' $aexport PATH=$ PATH:/usr/local/mysql/bin' /etc/profile

[root@slave01_5 ~]# source /etc/profile

6）修改slave02配置文件

[root@slave01_5 ~]# ls /usr/local/mysql/

bin docs lib man README support-files

data include LICENSE mysql-files share

[root@slave01_5 ~]# 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/err.log

relay-log=/usr/local/mysql/data/relaylog

character_set_server=utf8mb4

server-id=12

[root@slave01_5 ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql57

[root@slave01_5 ~]# sed -i ' $aexport PATH=$ PATH:/usr/local/mysql/bin' /etc/profile

[root@slave01_5 ~]# source /etc/profile

7）主服务器锁表

[root@msater_5 ~]# mysql -proot

mysql> select user,host from mysql.user;

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

| user | host |

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

| slave | % |

| li | % |

| mysql.session | localhost |

| mysql.sys | localhost |

| root | localhost |

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

5 rows in set (0.00 sec)

mysql> flush tables with read lock;

Query OK, 0 rows affected (0.00 sec)

mysql> show master status;

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

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

| binlog.000002 | 154 | | | |

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

1 row in set (0.00 sec)

8）配置主从服务

[root@slave01_5 ~]# mysql -uroot -proot

mysql> change master to master_host="10.0.0.57",master_user="slave",master_password="slave",master_log_file="binlog.000002",master_log_pos=154;

Query OK, 0 rows affected, 2 warnings (0.01 sec)

mysql> start slave;

Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G;

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.2.57

Master_User: slave

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: binlog.000002

Read_Master_Log_Pos: 154

Relay_Log_File: relaylog.000002

Relay_Log_Pos: 317

Relay_Master_Log_File: binlog.000002

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

9）配置主从从服务

[root@slave01_5 ~]# mysql -uroot -proot

mysql> change master to master_host="10.0.0.57",master_user="slave",master_password="slave",master_log_file="binlog.000002",master_log_pos=154;

Query OK, 0 rows affected, 2 warnings (0.01 sec)

mysql> start slave;

Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G;

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.2.57

Master_User: slave

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: binlog.000002

Read_Master_Log_Pos: 154

Relay_Log_File: relaylog.000002

Relay_Log_Pos: 317

Relay_Master_Log_File: binlog.000002

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

2.在mysql中添加eleme数据库设置为utf8mb4

[root@msater_5 ~]# mysql -proot

mysql> unlock tables;

Query OK, 0 rows affected (0.00 sec)

mysql> create database if not exists eleme charset utf8mb4;

Query OK, 1 row affected (0.00 sec)

mysql> show databases;

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

| Database |

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

| information_schema |

| eleme |

| mysql |

| performance_schema |

| sys |

| test |

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

6 rows in set (0.00 sec)

3.添加表t_user（master）

mysql> use eleme;

Database changed

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)

-> );

Query OK, 0 rows affected (0.01 sec)

mysql> show tables;

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

| Tables_in_eleme |

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

| t_user |

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

1 row in set (0.00 sec)

4.添加2行记录（master）

mysql> insert into eleme.t_user values(1,'超级管理员','admin','admin','超级管理员'),(2,'普通用户','guest','guest','普通用户');

Query OK, 2 rows affected (0.00 sec)

Records: 2 Duplicates: 0 Warnings: 0

mysql> select * from eleme.t_user;

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

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

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

2 rows in set (0.00 sec)

5.使用mycat为三台数据库设置负载均衡（读写分离）

1）前期jdk环境部署

[root@mycat ~]# systemctl stop firewalld

[root@mycat ~]# systemctl disable firewalld

[root@mycat ~]# ls

anaconda-ks.cfg Mycat-server-1.6.5-release-20180122220033-linux.tar.gz

jdk-8u192-linux-x64.tar.gz v

[root@mycat ~]# tar -xf jdk-8u192-linux-x64.tar.gz

[root@mycat ~]# tar -xf Mycat-server-1.6.5-release-20180122220033-linux.tar.gz

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

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

[root@mycat ~]# ls /usr/local/jdk/

bin lib src.zip

include man THIRDPARTYLICENSEREADME.txt

javafx-src.zip README.html

jre release

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

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

[root@mycat ~]# $JAVA_HOME

-bash: /usr/local/jdk: 是一个目录

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

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

[root@mycat ~]# $PATH

-bash: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/usr/local/jdk/bin: 没有那个文件或目录

[root@mycat ~]# javac -version

javac 1.8.0_192

2）修改server.xml配置文件

[root@mycat ~]# vim /usr/local/mycat/conf/server.xml

93 <user name="li" defaultAccount="true">

94 <property name="password">li</property>

95 <property name="schemas">eleme</property>

注释

107 <!--

108 <user name="user">

109 <property name="password">user</property>

110 <property name="schemas">TESTDB</property>

111 <property name="readOnly">true</property>

112 </user>

113 -->

3）修改schema.xml 配置文件

4）启动服务

[root@mycat ~]# /usr/local/mycat/bin/mycat start

Starting Mycat-server...

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

tcp6 0 0 :::8066 :::* LISTEN 1336/java

6.客户端测试mycat

7.部署java17环境

1）java01

[root@java01 ~]# ls

anaconda-ks.cfg jdk-17_linux-x64_bin.tar.gz

[root@java01 ~]# tar -xf jdk-17_linux-x64_bin.tar.gz

[root@java01 ~]# ls

anaconda-ks.cfg jdk-17.0.12 jdk-17_linux-x64_bin.tar.gz

[root@java01 ~]# cp -r jdk-17.0.12/ /usr/local/jdk

[root@java01 ~]# vim /etc/profile

export JAVA_HOME=/usr/local/jdk

export PATH= $PATH:$ JAVA_HOME/bin

[root@java01 ~]# source /etc/profile

[root@java01 ~]# javac --version

javac 17.0.12

[root@java01 ~]# firewall-cmd --add-port=8080/tcp --permanent

success

[root@java01 ~]# firewall-cmd --reload

success

[root@java01 ~]# ls

anaconda-ks.cfg application.yml eleme_server-0.0.1-SNAPSHOT.jar jdk-17.0.12 jdk-17_linux-x64_bin.tar.gz

[root@java01 ~]# vim application.yml

server:

port: 8080

spring:

datasource:

driver-class-name: com.mysql.cj.jdbc.Driver

url: jdbc:mysql://10.0.0.11:8066/eleme

username: li

password: li

[root@java01 ~]# java -jar eleme_server-0.0.1-SNAPSHOT.jar

2）浏览器访问：10.0.0.12:8080

3）java02

[root@java01 ~]# ls

anaconda-ks.cfg jdk-17_linux-x64_bin.tar.gz

[root@java01 ~]# tar -xf jdk-17_linux-x64_bin.tar.gz

[root@java01 ~]# ls

anaconda-ks.cfg jdk-17.0.12 jdk-17_linux-x64_bin.tar.gz

[root@java01 ~]# cp -r jdk-17.0.12/ /usr/local/jdk

[root@java01 ~]# vim /etc/profile

export JAVA_HOME=/usr/local/jdk

export PATH= $PATH:$ JAVA_HOME/bin

[root@java01 ~]# source /etc/profile

[root@java01 ~]# javac --version

javac 17.0.12

[root@java01 ~]# firewall-cmd --add-port=8080/tcp --permanent

success

[root@java01 ~]# firewall-cmd --reload

success

[root@java01 ~]# ls

anaconda-ks.cfg application.yml eleme_server-0.0.1-SNAPSHOT.jar jdk-17.0.12 jdk-17_linux-x64_bin.tar.gz

[root@java01 ~]# vim application.yml

server:

port: 8080

spring:

datasource:

driver-class-name: com.mysql.cj.jdbc.Driver

url: jdbc:mysql://10.0.0.11:8066/eleme

username: li

password: li

[root@java01 ~]# java -jar eleme_server-0.0.1-SNAPSHOT.jar

4）浏览器访问：10.0.0.13:8080

8.部署LVS-nat模式

1）lvs

[root@lvs ~]# ifconfig ens33:0 10.0.0.100 broadcast 10.0.0.100 netmask 255.255.255.255 up

[root@lvs ~]# route add -host 10.0.0.100 dev ens33:0

[root@lvs ~]# yum -y install ipvsadm

[root@lvs ~]# ipvsadm -C

[root@lvs ~]# ipvsadm -A -t 10.0.0.100:8080 -s rr

[root@lvs ~]# ipvsadm -a -t 10.0.0.100:8080 -r 10.0.0.12 -g

[root@lvs ~]# ipvsadm -a -t 10.0.0.100:8080 -r 10.0.0.13 -g

[root@lvs ~]# systemctl stop firewalld

[root@lvs ~]# systemctl disable firewalld

Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.

Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.

[root@lvs ~]# setenforce 0

[root@lvs ~]# systemctl stop firewalld

[root@lvs ~]# ipvsadm -Ln

TCP 10.0.0.100:8080 rr

-> 10.0.0.12:8080 Route 1 0 1

-> 10.0.0.13:8080 Route 1 0 1

2）java01

[root@java01 ~]# ifconfig lo:0 10.0.0.100 broadcast 10.0.0.100 netmask 255.255.255.255 up

[root@java01 ~]# route add -host 10.0.0.100 dev lo:0

[root@java01 ~]# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore

[root@java01 ~]# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce

[root@java01 ~]# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore

[root@java01 ~]# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

3）java02

[root@java01 ~]# ifconfig lo:0 10.0.0.100 broadcast 10.0.0.100 netmask 255.255.255.255 up

[root@java01 ~]# route add -host 10.0.0.100 dev lo:0

[root@java01 ~]# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore

[root@java01 ~]# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce

[root@java01 ~]# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore

[root@java01 ~]# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

4）浏览器访问：10.0.0.100:8080(外网地址)

8.22

注释