Nginx实现HTTP及TCP负载均衡

Nginx实现HTTP及TCP负载均衡
这种通过一台apache的服务器把客户请求分别传递给两台tomcat叫负载均衡

========================================= ========================

材料：准备两台Tomcat主机

第一台tomcat主机配置：IP为192.168.200.130

[root@localhost ~]# mkdir -pv /web/webapp
mkdir: 已创建目录 "/web"
mkdir: 已创建目录 "/web/webapp"
[root@localhost ~]# vim /web/webapp/index.jsp
```
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<title>JSP test page</title>
</head>
<body>
<% out.println("Welcome to test site,http://www.test.com");%>
</body>
</html>
```
[root@localhost ~]# cd /usr/local/tomcat8/conf/

[root@localhost conf]# cp server.xml server.xml.bak //备份一份主配置文件
[root@localhost conf]# vim server.xml
```
在150行左右的Host下添加Context文件
```
```
 <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
        <Context docBase="/web/webapp" path="" reloadable="flase">
       </Context>
```
[root@localhost conf]# /usr/local/tomcat8/bin/startup.sh
Using CATALINA_BASE: /usr/local/tomcat8
Using CATALINA_HOME: /usr/local/tomcat8
Using CATALINA_TMPDIR: /usr/local/tomcat8/temp
Using JRE_HOME: /usr/local/java
Using CLASSPATH: /usr/local/tomcat8/bin/bootstrap.jar:/usr/local/tomcat8/bin/tomcat-juli.jar
Tomcat started.
[root@localhost conf]# netstat -anpt | grep :8080
tcp6 0 0 :::8080 :::* LISTEN 61263/java
[root@localhost conf]# systemctl stop firewalld
[root@localhost conf]# iptables -F
[root@localhost conf]# setenforce 0

测试：

第二台Tomcat主机配置：IP为192.168.200.122

[root@localhost ~]# mkdir -pv /web/webapp1
mkdir: 已创建目录 "/web"
mkdir: 已创建目录 "/web/webapp1"
[root@localhost ~]# vim /web/webapp1/index.jsp
```
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<title>JSP test page</title>
</head>
<body>
<% out.println("Welcome to test site,http://www.test1.com");%>
</body>
</html>
```
[root@localhost ~]# cd /usr/local/tomcat8/conf/

[root@localhost conf]# cp server.xml server.xml.bak //备份一份主配置文件
[root@localhost conf]# vim server.xml
```
在150行左右的Host下添加Context文件
```
```
 <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
        <Context docBase="/web/webapp1" path="" reloadable="flase">
       </Context>
```
[root@localhost conf]# /usr/local/tomcat8/bin/startup.sh
Using CATALINA_BASE: /usr/local/tomcat8
Using CATALINA_HOME: /usr/local/tomcat8
Using CATALINA_TMPDIR: /usr/local/tomcat8/temp
Using JRE_HOME: /usr/local/java
Using CLASSPATH: /usr/local/tomcat8/bin/bootstrap.jar:/usr/local/tomcat8/bin/tomcat-juli.jar
Tomcat started.
[root@localhost conf]# netstat -anpt | grep :8080
tcp6 0 0 :::8080 :::* LISTEN 61263/java
[root@localhost conf]# systemctl stop firewalld
[root@localhost conf]# iptables -F
[root@localhost conf]# setenforce 0

测试：
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原文地址：https://www.cnblogs.com/CMX_Shmily/p/11587302.html