node js load balancer

BasePath problems-nginx Server Load balancer Configuration After configuring nginx + tomcat, add the project to webapps. Css and js cannot access the homepage, leading to an error in homepage layout. After carefully analyzing the cause, we found that the css and js addresses were obtained by basePath. BasePath is defi

shunt, the rest of the other back end. 4) Upstream_hashto solve some of the ip_hash problems, you can use Upstream_hash, the third-party module, which is used in most cases as url_hash, but does not prevent it from being used for session sharing:If the front end is squid, he will add IP to x_forwarded_for this http_header, with Upstream_hash can use this head to do the factor, the request directed to the specified backend:This document is visible:http://www.oschina.net/discuss/thread/622in the

/test.jspServer Info:Out.println (REQUEST.GETLOCALADDR () + ":" + request.getlocalport () + "Out.println ("String dataname = Request.getparameter ("Dataname");if (dataname! = null dataname.length () > 0) {String DataValue = Request.getparameter ("DataValue");Session.setattribute (Dataname, DataValue);}Out.print ("Enumeration E = Session.getattributenames ();while (E.hasmoreelements ()) {String name = (string) e.nextelement ();String value = Session.getattribute (name). toString ();OUT.PRINTLN (

When using Apache for Server Load balancer, it communicates with the Application Server (Tomcat or JBoss) through the AJP protocol. For example, the JBoss configuration is as follows: Note that the two nodes (HTTP and AJP) do not specify the encoding format, and our pages (JSP or PHP) are usually UTF-8 encoded, such as a JSP page: In this way, if the Link contains Chinese characters (for example, using Ch

Keepalived Master/Slave Server Load balancer, based on the LAMP Platform1. Introduction to the basic principles of keepalived Keepalived was initially designed to achieve high availability and lightweight lvs front-end ctor. Vrrp protocol. VRRP is a fault tolerance protocol that ensures that when the next hop router of the host fails, another router is used to replace the faulty router, this ensures the con

://s3.51cto.com/wyfs02/M01/54/2F/wKioL1R7TGfAErb6AAJAw47UE4I269.jpg "Title =" ee.png "alt =" wkiol1r7tgfaerb6aajaw47ue4i269.jpg "/> View on the browser 650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M01/54/30/wKiom1R7TCahZkwRAAFCm6IKzio325.jpg "Title =" q.png "alt =" wkiom1r7tcahzkwraafcm6ikzio325.jpg "/> Complete. The experiment on the master and slave machines is complete, which is very simple .. There is also the service load balancing

Configure haproxy L7 Server Load balancer in Route 3-Based on URL address directory forwarding ● 3.1 prepare the RS server test environment Create a test directory:For name in PHP nginx PIC; do mkdir-P/var/$ name; echo $ Name>/var/$ name/index.html; done Configure HTTP serviceDelete any Apache configuration above (or restore httpd. conf)[Root @ ha2 conf] # cd/etc/httpd/Conf[Root @ ha2 conf] #/bin/CP httpd.

Logs_path= "/data/logs/"#将日志改名Mkdir-p ${logs_path}${date-d "Yesterday" + "%Y"}/${date-d "Yesterday" + "%m"}/MV ${logs_path}access.log ${logs_path}${date-d "Yesterday" + "%Y"}/${date-d "Yesterday" + "%m"}/access_${date-d "yester Day "+"%y%m%d "}.log#重启Nginx服务, regenerate the Access.log fileService Nginx Reload#创建计划任务#crontab-|* * * */bin/bash/data/logs.shLoad BalancingUpstream My_server_pool {}Copies the specified input file into the specified output file, and can be converted to a format during

.[Email protected] ~]# ipvsadm-a-t 192.168.60.200:80-r 192.168.60.132:80–g[Email protected] ~]# ipvsadm-a-t 192.168.60.200:80-r 192.168.60.144:80–gThe above two settings indicate that two new real server records are added to the virtual server 192.168.60.200, two real server IPs are 192.168.60.132 and 192.168, respectively. 60.144, Parameter "-G" Specifies that the operating mode of the virtual server is the direct route mode, which is the DR mode.After this is set up, when the user accesses the

192.168.60.132:80–g[Email protected] ~]# ipvsadm-a-t 192.168.60.200:80-r 192.168.60.144:80–gThe above two settings indicate that two new real server records are added to the virtual server 192.168.60.200, two real server IPs are 192.168.60.132 and 192.168, respectively. 60.144, Parameter "-G" Specifies that the operating mode of the virtual server is the direct route mode, which is the DR mode.After this is set up, when the user accesses the 192.168.60.200 80 service, LVS assigns the request to

:229406(224.0KiB) TX Bytes:229406(224.0KiB) [Email protected] keepalived]# Ipvsadm-lnip Virtual Server version1.2.1(size=4096) Prot localaddress:port Scheduler Flags-remoteaddress:port Forward Weight activeconn inactconntcp192.168.103.100: theWRR Persistent --192.168.103.101: theRoute1 0 0-192.168.103.105: theRoute1 0 0If the NODE3 does not turn off the firewall, the ETH0:1 network card is also enabled, so be careful to shut down the firewall.Linux under KEEPALIVED+LV

First download, install Tomcat.Modify the Tomcat port and modify the Server.xml:1. Modify the Tomcat port (default 8080)port= "8383" protocol= "http/1.1" connectiontimeout = "20000" redirectport= "8443"/>2.shutdown Port (default 8005)port= "8006" shutdown= "shutdown"> className = "Org.apache.catalina.startup.VersionLoggerListener"/> 3. Modify the AJP port (default 8009)- port = "8019" protocol = "ajp/1.3" Redirectport = "8443" />At the same time modify the

Locate nginx.conf under the Conf file in the Nginx root directory, and editConfigure the server IP and port number before server{}Such as:Upstream Local_tomcat {Local_tomcat for the access path, configure the server IP and port number below, you can also assign weights (weight==? ）Server 127.0.0.1:8080; #权重Server 127.0.0.1:8081; #权重}server {Listen 80; #端口server_name localhost; #ip#charset Koi8-r;#access_log Logs/host.access.log Main;Location/{root HTML;Index index.html index.htm;}# All static re

number of connections exist. Nginx, a well-known server, also abandons the multi-thread approach and adopts the same event-driven approach as Node. Today, Nginx is a great replacement for Apache. Nginx is written in pure C mode with high performance. However, Nginx is only suitable for Web servers and is used for reverse proxy or Server Load balancer.

This article analyzes and explains node through several examples. the use of require in js is very detailed. Here we recommend that you provide a very clear description in the code comments. Here we will not talk nonsense about it. We will provide the Code directly: The Code is as follows: /* In node, you can use the require () function to

This article mainly introduces Node. js module loading details. This article describes how to load core modules, file modules, directory modules, and file Loading modules, for more information, see JavaScript, one of the most frequently used programming languages in the world. It is a common language in the Web world and used by all browsers. JavaScript was born

This article mainly introduces Node. js module loading details. This article describes how to load core modules, file modules, directory modules, and file Loading modules, for more information, see JavaScript, one of the most frequently used programming languages in the world. It is a common language in the Web world and used by all browsers. JavaScript was born

This is the third article in this series. The first two netizens have fed back a lot of messages. In addition, they have been busy for the last two days and have never had time to sort out the articles. It's a weekend, let's sort it out. In this article, we will talk about node. js module introduction and Materials Through Node. the official API of

Encounter problems in the project today, to implement Easyui Treegrid implementation click on parent node to load child nodesThe first reaction is to go to Baidu, Google a bit, found that the answer on the web is not lazy loading is the Onbeforeexpand call append methodI decided to use the second method, defining the Onbeforeexpand method of Treegrid, and calling the Appen method inside.But when I was runni

/luotianshuai/p/5098408.htmlSecond, Node JS Excellent, shortcomingsAdvantages:1, concurrency High is the choice node JS important advantages2. Suitable for I/O intensive applicationsDisadvantages :1, not suitable for CPU-intensive applications, CPU-intensive applications to node