高并发集群饿了么后端的登录模块
1.数据库
非交互式python：
非交互式:
2.数据库的负载均衡：阿里巴巴的mycat
修改配置文件
/usr/local/mycat/conf/server.xml :对外的账号 密码 数据库
/usr/local/mycat/conf/schema.xml
如果出现启动异常，8066端口没有打开，可以检查两个日志文件
vim /usr/local/mycat/logs/wrapper.log
vim /usr/local/mycat/logs/mycat.log
3.后端服务器
java|python|php
使用jar包启动服务： java -jar ...
一.配置一主二从mysql57
配置基于gtids事务复制
二.配置mycat读写分离负载均衡
使用mycat为三台数据库设置负载均衡（读写分离）
1.前期环境部署
[root@mycat ~]# lsanaconda-ks.cfg Mycat-server-1.6.5-release-20180122220033-linux.tar.gzjdk-8u192-linux-x64.tar.gz[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/mycat[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[root@mycat ~]# javac -versionjavac 1.8.0_192[root@mycat ~]# /usr/local/mycat/bin/mycat console
2.修改server.xml配置文件
[root@mycat ~]# vim /usr/local/mycat/conf/server.xml93 <user name="haha" defaultAccount="true">94 <property name="password">haha</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
1.设置schema标签 添加dataNode="xxx" name=eleme
2.修改dataHost标签
[root@mycat ~]# vim /usr/local/mycat/conf/schema.xml 1 <?xml version="1.0"?>2 <!DOCTYPE mycat:schema SYSTEM "schema.dtd">3 <mycat:schema xmlns:mycat="http://io.mycat/">4 5 <schema name="eleme" dataNode="dn1" checkSQLschema="false" sqlMaxLimit="10 0"> 6 </schema>7 <!-- <dataNode name="dn1$0-743" dataHost="localhost1" database="db$0-743"8 /> -->9 <dataNode name="dn1" dataHost="localhost1" database="eleme" />10 <!-- <dataNode name="dn2" dataHost="localhost1" database="db2" />11 <dataNode name="dn3" dataHost="localhost1" database="db3" />-->12 <!--<dataNode name="dn4" dataHost="sequoiadb1" database="SAMPLE" />13 <dataNode name="jdbc_dn1" dataHost="jdbchost" database="db1" />14 <dataNode name="jdbc_dn2" dataHost="jdbchost" database="db2" />15 <dataNode name="jdbc_dn3" dataHost="jdbchost" database="db3" /> -->16 <dataHost name="localhost1" maxCon="1000" minCon="10" balance="0" 17 writeType="0" dbType="mysql" dbDriver="native" switchTyp e="1" slaveThreshold="100">18 <heartbeat>select user()</heartbeat>19 <!-- can have multi write hosts -->20 <writeHost host="hostM1" url="192.168.2.57:3306" user="haha"21 password="haha">22 <!-- can have multi read hosts --> 23 <readHost host="hostS2" url="192.168.2.58:3306" user="haha " password="haha" /> 24 <readHost host="hostS3" url="192.168.2.59:3306" user="haha " password="haha" />25 </writeHost>26 <!--27 <writeHost host="hostS1" url="localhost:3316" user="root"28 password="123456" />29 --> 30 <!-- <writeHost host="hostM2" url="localhost:3316" user="root" pas sword="123456"/> -->31 </dataHost>
4.启动服务
[root@mycat ~]# /usr/local/mycat/bin/mycat start
Starting Mycat-server...
[root@mycat ~]# netstat -lntup | grep 8066
tcp6 0 0 :::8066 :::* LISTEN 1916/j
5.测试mycat是否读写分离三台mysql服务器
三.部署Java17环境
部署两台Java，两台操作一样：
[root@java01 ~]# lsanaconda-ks.cfg jdk-17_linux-x64_bin.tar.gz [root@java01 ~]# tar -xf jdk-17_linux-x64_bin.tar.gz [root@java01 ~]# lsanaconda-ks.cfg jdk-17.0.12 jdk-17_linux-x64_bin.tar.gz [root@java01 ~]# cp -r jdk-17.0.12/ /usr/local/jdk[root@java01 ~]# vim /etc/profileexport JAVA_HOME=/usr/local/jdkexport PATH=$PATH:$JAVA_HOME/bin[root@java01 ~]# source /etc/profile[root@java01 ~]# javac --versionjavac 17.0.12[root@java01 ~]# firewall-cmd --add-port=8080/tcp --permanentsuccess[root@java01 ~]# firewall-cmd --reloadsuccess[root@java01 ~]# lsanaconda-ks.cfg application_(1).yml eleme_server-0.0.1-SNAPSHOT.jar jdk-17.0.12 jdk-17_linux-x64_bin.tar.gz[root@java01 ~]# mv application_\(1\).yml application.yml [root@java01 ~]# lsanaconda-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: 8080spring:datasource:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://192.168.2.19:8066/elemeusername: hahapassword: haha[root@java01 ~]# java -jar eleme_server-0.0.1-SNAPSHOT.jar 浏览器访问：Java的ip:8080,出现登录页面
四.部署LVS-DR模式
lvs负载均衡两台后端服务器Java
lvs:
[root@lvs ~]# ifconfig ens33:0 192.168.2.150 broadcast 192.168.2.121 netmask 255.255.255.255 up[root@lvs ~]# route add -host 192.168.2.150 dev ens33:0[root@lvs ~]# yum -y install ipvsadm[root@lvs ~]# ipvsadm -C[root@lvs ~]# ipvsadm -A -t 192.168.2.150:8080 -s rr[root@lvs ~]# ipvsadm -a -t 192.168.2.150:8080 -r 192.168.2.11 -g[root@lvs ~]# ipvsadm -a -t 192.168.2.150:8080 -r 192.168.2.12 -g[root@lvs ~]# systemctl stop firewalld[root@lvs ~]# systemctl disable firewalldRemoved 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 -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags-> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 192.168.2.150:8080 rr-> 192.168.2.11:8080 Route 1 0 1 -> 192.168.2.12:8080 Route 1 0 1
两台java:
[root@java01 ~]# ifconfig lo:0 192.168.2.150 broadcast 192.168.2.150 netmask 255.255.255.255 up[root@java01 ~]# route add -host 192.168.2.150 dev lo:0[root@java01 ~]# vim arp.sh[root@java01 ~]# source arp.sh
访问：访问lvs的vip地址:8080,出现登录页
五.nginx代理端口
在lvs上下载nginx,代理8080端口
/etc/nginx/nginx.conf
server localhost:8080
server java服务器ip:8080
