使用nginx和tomcat搭建负载均衡

朱雀 2022-06-17 06:14 224阅读 0赞

先下载nginx和tomat,  
两台tomcat,由于两个tomcat都在本机启动,所以需要修改下tomcat的端口。  
这里笔者直接复制粘贴,也省的读者不知道选择哪个端口好  
第一个tomcat

<?xml version="1.0" encoding="UTF-8"?>
    
    
    <Server port="18005" shutdown="SHUTDOWN">
      <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
      
      
      <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
      
      <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
      <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
      <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
    
      
      <GlobalNamingResources>
        
        <Resource name="UserDatabase" auth="Container" type="org.apache.catalina.UserDatabase" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" pathname="conf/tomcat-users.xml" />
      </GlobalNamingResources>
    
      
      <Service name="Catalina">
    
        
        
    
    
        
        <Connector port="9000" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8444" />
        
        
        
        
        
        
    
        
        <Connector port="9009" protocol="AJP/1.3" redirectPort="8447" />
    
    
        
    
        
        <Engine name="Catalina" defaultHost="localhost">
    
          
          
    
          
          <Realm className="org.apache.catalina.realm.LockOutRealm">
            
            <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/>
          </Realm>
    
          <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true">
    
            
            
    
            
            <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" />
    
          </Host>
        </Engine>
      </Service>
    </Server>

第二个tomcat

<?xml version="1.0" encoding="UTF-8"?>
    
    
    <Server port="8005" shutdown="SHUTDOWN">
      <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
      
      
      <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
      
      <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
      <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
      <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
    
      
      <GlobalNamingResources>
        
        <Resource name="UserDatabase" auth="Container" type="org.apache.catalina.UserDatabase" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" pathname="conf/tomcat-users.xml" />
      </GlobalNamingResources>
    
      
      <Service name="Catalina">
    
        
        
    
    
        
        <Connector port="8888" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" />
        
        
        
        
        
        
    
        
        <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
    
    
        
    
        
        <Engine name="Catalina" defaultHost="localhost">
    
          
          
    
          
          <Realm className="org.apache.catalina.realm.LockOutRealm">
            
            <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/>
          </Realm>
    
          <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true">
    
            
            
    
            
            <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log" suffix=".txt" pattern="%h %l %u %t "%r" %s %b" />
    
          </Host>
        </Engine>
      </Service>
    </Server>

在放入nginx的配置文件  
/conf/nginx.conf

#user nobody;
    worker_processes  1;
    
    #error_log logs/error.log;
    #error_log logs/error.log notice;
    #error_log logs/error.log info;
    
    #pid logs/nginx.pid;
    
    
    events {
        worker_connections  1024;
    }
    
    
    http {
        include       mime.types;
        default_type  application/octet-stream;
    
        #log_format main '$remote_addr - $remote_user [$time_local] "$request" '
        # '$status $body_bytes_sent "$http_referer" '
        # '"$http_user_agent" "$http_x_forwarded_for"';
    
        #access_log logs/access.log main;
    
        sendfile        on;
        #tcp_nopush on;
    
        #keepalive_timeout 0;
        keepalive_timeout  65;
    
        #gzip on;
    
    upstream  netitcast.com {  #服务器集群名字 
            server    127.0.0.1:8888  weight=1;#服务器配置 weight是权重的意思，权重越大，分配的概率越大。 
            server    127.0.0.1:9000  weight=2;  
        }    
    
        server {
            listen       80;
            server_name  localhost;
    
            #charset koi8-r;
    
            #access_log logs/host.access.log main;
    
            location / {
               proxy_pass http://netitcast.com; 
                proxy_redirect default;  
            }
    
            #error_page 404 /404.html;
    
            # redirect server error pages to the static page /50x.html
            #
            error_page   500 502 503 504  /50x.html;
            location = /50x.html {
                root   html;
            }
    
            # proxy the PHP scripts to Apache listening on 127.0.0.1:80
            #
            #location ~ \.php$ { 
            # proxy_pass http://127.0.0.1;
            #}
    
            # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
            #
            #location ~ \.php$ { 
            # root html;
            # fastcgi_pass 127.0.0.1:9000;
            # fastcgi_index index.php;
            # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
            # include fastcgi_params;
            #}
    
            # deny access to .htaccess files, if Apache's document root
            # concurs with nginx's one
            #
            #location ~ /\.ht { 
            # deny all;
            #}
        }
    
    
    
    
    
    
        # another virtual host using mix of IP-, name-, and port-based configuration
        #
        #server { 
        # listen 8000;
        # listen somename:8080;
        # server_name somename alias another.alias;
    
        # location / { 
        # root html;
        # index index.html index.htm;
        # }
        #}
    
    
        # HTTPS server
        #
        #server { 
        # listen 443 ssl;
        # server_name localhost;
    
        # ssl_certificate cert.pem;
        # ssl_certificate_key cert.key;
    
        # ssl_session_cache shared:SSL:1m;
        # ssl_session_timeout 5m;
    
        # ssl_ciphers HIGH:!aNULL:!MD5;
        # ssl_prefer_server_ciphers on;
    
        # location / { 
        # root html;
        # index index.html index.htm;
        # }
        #}
    
    }

由于机器上有两个tomcat,所以环境变量CATALINA\_HOME不好配,我们在startup.bat批处理文件中加入如下

SET CATALINA_HOME=F:\tomcat9\apache-tomcat-9.0.0.M18-windows-x64\apache-tomcat-9.0.0.M18

等号后面是具体的tomcat安装目录。两个tomcat都要在startup.bat中加入如上的参数。

最后，我们在tomcat的 /webapps/ROOT/index.jsp  
改一下内容,只是为了区分一下nginx吧请求分到哪个tomcat上,比如在 /webapps/ROOT/index.jsp可以加上这是第一台tomcat和这是第二台tomcat等信息,用于区分是哪个tomcat

参考自: [http://blog.csdn.net/wang379275614/article/details/47778201][http_blog.csdn.net_wang379275614_article_details_47778201]

[http_blog.csdn.net_wang379275614_article_details_47778201]: http://blog.csdn.net/wang379275614/article/details/47778201