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;
+ --------------- + ---------- + -------------- + ------------------ + ---------------
---- +
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
Executed_Gtid_Set |
+ --------------- + ---------- + -------------- + ------------------ + ---------------
---- +
| 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_lo
g_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_lo
g_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;
+ ---- + ----------------- + ---------- + ---------- + ----------------- +
| 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)
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
COPYRIGHT LICENSE THIRDPARTYLICENSEREADME-JAVAFX.txt
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 )
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