nginx实现后端tomcat的负载均衡调度

四台机器：

client：10.0.0.37 客户端 测试

proxy：10.0.0.17 nginx-1.18 负载均衡调度器

tomcat1： 10.0.0.7 Tomcat-8.5.78

tomcat2： 10.0.0.27 Tomcat-8.5.78

[root@proxy ~]#vim /apps/nginx/conf/nginx.conf
http {
    upstream tomcat {
        server tomcat1.linux2022.com:8080;
        server tomcat2.linux2022.com:8080;
    }

    server {
        listen       80;
        server_name  www.linux2022.com;
        location / {
            proxy_pass http://tomcat;
        }
    }
[root@proxy ~]#nginx -t
[root@proxy ~]#nginx -s reload
[root@proxy ~]#vim /etc/hosts
10.0.0.7 tomcat1.linux2022.com
10.0.0.27 tomcat2.linux2022.com
[root@proxy ~]#systemctl restart nginx.service

#项目路径配置
[root@tomcat2 ~]#mkdir -pv /data/webapps/ROOT

#编写测试jsp文件
[root@tomcat2 ~]#vim /data/webapps/ROOT/index.jsp
<%@ page import="java.util.*" %>



    
    


On <%=request.getServerName() %>
<%=request.getLocalAddr() + ":" + request.getLocalPort() %>
SessionID = <%=session.getId() %>
<%=new Date()%>



#虚拟主机配置
[root@tomcat2 ~]#cd /usr/local/tomcat/
[root@tomcat2 tomcat]#pwd
/usr/local/tomcat
[root@tomcat2 tomcat]#vim conf/server.xml
    
      
      

#设置权限
[root@tomcat2 tomcat]#chown -R tomcat.tomcat /data/webapps/

#重启Tomcat服务
[root@tomcat2 tomcat]#systemctl restart tomcat.service

#项目路径配置
[root@tomcat1 ~]# mkdir -pv /data/webapps/ROOT

#编写测试jsp文件
[root@tomcat1 ~]#vim /data/webapps/ROOT/index.jsp
<%@ page import="java.util.*" %>



    
    


On <%=request.getServerName() %>
<%=request.getLocalAddr() + ":" + request.getLocalPort() %>
SessionID = <%=session.getId() %>
<%=new Date()%>



#虚拟主机配置
[root@tomcat1 ~]#cd /usr/local/tomcat/
[root@tomcat1 tomcat]#pwd
/usr/local/tomcat
[root@tomcat1 tomcat]#vim conf/server.xml
    
      
      

#设置权限
[root@tomcat1 tomcat]#chown -R tomcat.tomcat /data/webapps/

#重启Tomcat服务
[root@tomcat1 tomcat]#systemctl restart tomcat.service

#客户端测试访问
[root@client ~]#vim /etc/hosts
10.0.0.17 www.linux2022.com

#默认使用RR轮询调度算法
[root@client ~]#curl www.linux2022.com/index.jsp



    
    


On tomcat
10.0.0.27:8080
SessionID = 5FE48687926B239CE23427CE21D35FDE
Mon Apr 25 10:51:37 CST 2022


[root@client ~]#curl www.linux2022.com/index.jsp



    
    


On tomcat
10.0.0.7:8080
SessionID = E7E1001CDE44EA9FEAF744E2892EBC4E
Mon Apr 25 10:52:02 CST 2022