简单的负载均衡Nginx+Tomcat

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原创最新推荐文章于 2026-07-02 08:54:44 发布 941 阅读 AI 写同款· GEO 优化 ›

linux(ubuntu)+docker+nginx+tomcat 运行第一个helloworld，并用nginx实现简单的负载均衡 ubuntu+docker+nginx+tomcat 运行第一个Hello,World！一、ubuntu安装docker 更新软件包缓存 sudo apt update 安装docker-ce sudo apt install docker-ce 设置开机启动docker sudo systemctl enable docker sudo systemctl start docker 测试运行 sudo docker run hello-world 添加当前用户到docker用户阅读详情

实验: 一个 Nginx 反向代理服务器+ 多个Tomcat 实例

目的: 实现简单的负载均衡

Nginx: http://nginx.org/download/nginx-1.7.6.tar.gz

Tomcat: http://tomcat.apache.org/download-70.cgi#7.0.56

Install Nginx and Tomcat:

Extract the tar.gz under the use directory

hostip: 192.168.0.30

nginx_port:7777

tomcat_instance_1_name: server1

tomcat_instance_1_name: server2

tomcat_instance_1_name: server3

tomcat_instance_1_port:8080

tomcat_instance_2_port:8081

tomcat_instance_3_port:8082

Create two user on the host: user_1 : proxy and user_2 : web

Configure the Nginx : /home/proxy/nginx/conf/nginx.conf

http{

upstream server1_pool {
server 192.168.0.30:8080;
}

upstream server2_pool {
server 192.168.0.30:8081;
}

upstream server3_pool {
server 192.168.0.30:8082;
}

server {

listen 7777;

location /SERVER2 {
#rewrite "^/cs/(.*)$" "/$1" break;
proxy_pass http://server2_pool/SERVER2;
#proxy_redirect off;
proxy_set_header Host $host:8081;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

location /SERVER1 {
#rewrite "^/yy/(.*)$" "/$1" break;
proxy_pass http://server1_pool/SERVER1;
#proxy_redirect off;
proxy_set_header Host $host:8080;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

location /SERVER3 {
#rewrite "^/cs/(.*)$" "/$1" break;
proxy_pass http://server3_pool/SERVER3;
#proxy_redirect off;
proxy_set_header Host $host:8802;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}

}

Start Nginx Server:

cd /home/proxy/nginx/bin

sh start.sh

Configure the Tomcat_instance_1: server.xml

<?xml version='1.0' encoding='utf-8'?>
<Connector executor="webcontainerThreadPool" port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol" connectionTimeout="20000" enableLookups="false" backlog="2000" acceptCount="4096" server="crm-web" useBodyEncodingForURI="true" maxHttpHeaderSize="16384" />
<Engine name="Catalina" defaultHost="localhost">
<Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
<Context docBase="/home/web/tomcat1/webapps" path="/SERVER1" reloadable="false" workDir="/veris/crm/aiweb/servers/crm/work" />

</Host>
</Engine>
</Service>
</Server>

Configure the Tomcat_instance_2: server.xml

<?xml version='1.0' encoding='utf-8'?>
<Connector executor="webcontainerThreadPool" port="8081" protocol="org.apache.coyote.http11.Http11NioProtocol" connectionTimeout="20000" enableLookups="false" backlog="2000" acceptCount="4096" server="crm-web" useBodyEncodingForURI="true" maxHttpHeaderSize="16384" />
<Engine name="Catalina" defaultHost="localhost">
<Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
<Context docBase="/home/web/tomcat2/webapps" path="/SERVER2" reloadable="false" workDir="/veris/crm/aiweb/servers/crm/work" />

</Host>
</Engine>
</Service>
</Server>

Configure the Tomcat_instance_3: server.xml

<?xml version='1.0' encoding='utf-8'?>
<Connector executor="webcontainerThreadPool" port="8082" protocol="org.apache.coyote.http11.Http11NioProtocol" connectionTimeout="20000" enableLookups="false" backlog="2000" acceptCount="4096" server="crm-web" useBodyEncodingForURI="true" maxHttpHeaderSize="16384" />
<Engine name="Catalina" defaultHost="localhost">
<Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false">
<Context docBase="/home/web/tomcat3/webapps" path="/SERVER2" reloadable="false" workDir="/veris/crm/aiweb/servers/crm/work" />

</Host>
</Engine>
</Service>
</Server>

Start the Tomcat Server:

cd /home/web/tomcat1/bin

sh start-web-server.sh

TEST:

http://192.168.0.30:7777/ ----- If works, it proves nginx server works

http://192.168.0.30:7777/SERVER1----- If works, this page will jump to http://192.168.0.30:8080/SERVER1

http://192.168.0.30:7777/SERVER2----- If works, this page will jump to http://192.168.0.30:8081/SERVER2

http://192.168.0.30:7777/SERVER3----- If works, this page will jump to http://192.168.0.30:8082/SERVER3