open source load balancer

Linux Server Load balancer cluster system solution-Linux Enterprise Application-Linux server application information. For details, refer to the following section. 1. Introduction to Linux virtual servers Linux Virtual Server (LVS) is a high-availability Server Load balancer cluster system. The system can provide

.png "" 532 "Height =" 242 "/> VCL. Load first6./Default. VCL VCL. Use first6 Then let the client start to initiate a request and give it a try: 650) This. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px "Title =" image "border =" 0 "alt =" image "src =" http://img1.51cto.com/attachment/201409/25/6249823_1411657818Ub2f.png "" 537 "Height =" 251 "/> web1 hard to refresh at this time will still be cach

the cluster is properly accessed:1, the experimental environment first ensure that the Iptables firewall is off state2, in the experimental environment to ensure that SELinux is closed or warning state3, in the RS server to establish an HTTP page, the content of the page is best to distinguish between the content of each host, such as: 192.168.100.2 such an IP address content4, the local physical machine directly access the VIP test whether the normal access, and whether it is normal polling ac

{State SLAVEInterface eth0Mcast_src_ip 192.168.115.177VIRTUAL_ROUTER_ID 51Priority 99Advert_int 1Authentication {Auth_type PASSAuth_pass 1111}virtual_ipaddress {192.168.115.180}Track_script {Chk_http_port}}Write scripts under/opt chk_nginx.sh(required for two nginx servers)#!/bin/bashcounter=$ (ps-c nginx--no-heading|wc-l)if ["${counter}" = "0"]; ThenService Nginx RestartSleep 2counter=$ (ps-c nginx--no-heading|wc-l)if ["${counter}" = "0"]; ThenService keepalived StopFiFiGive permissions and Ex

CCNA Experiment 13 STP the Load Balancer Environment: Windows XP , GNS3.0.7 Purpose: Learn how to Achieve load balancing in STP Description: The load balancing of STP is actually the use of another blocking link in the loop to share the load in the network steps:

corresponds to upstream localhost{}.After the above steps, the load Balancer configuration is completed, the following to start Tomcat_1, tomcat_2, and then double-click the nginx root directory Nginx.exe file or use start Nginx boot (shutdown is: nginx-s stop), open the browser, Enter Address: http://localhost will be able to see the first page of Tomcat.Learn

Tags: nginx mysql tomcat load balancer amoeba read/write separationNginx Load Balancer +mysql master-slave copy, read/write Separation +tomcat ProjectArchitecture: (only two virtual machines due to limited resources)1 192.168.137.3 Nginx, Mysql (master), TOMCAT1, TOMCAT22 192.168.137.5 Mysql (from)System version: CentO

, which is not the same as using the Netflix API itself, but only with the spring boot configuration file. native options can be CommonClientConfigKey checked as static fields (in the core section of the Ribbon). Spring Cloud also allows you @RibbonClient to fully control the client by using the claim other configuration (on RibbonClientConfiguration top). Example:@Configuration@RibbonClient(name = "foo", configuration = FooConfiguration.class)public class TestConfiguration {}In this case, the

open source Web application server, which belongs to the lightweight application server and is the server for developing and debugging JSP programs.On Server2 and Server3 virtual machines:Tomcat Installation :SH jdk-6u26-linux-x64.binMV jdk1.6.0_26//usr/localVim/etc/profileExport JAVA_HOME=/USR/LOCAL/JDKExport classpath=: $JAVA _home/libExport path= $PATH: $JAVA _home/binSource/etc/profileLn-s/usr/local/jd

*:3306Default_backend mysqlserversBackend MysqlserversBalance LeastconnServer M1 192.168.26.211:3306 Check Port 3306 maxconn 300Server M2 192.168.26.212:3306 Check port 3306 maxconn 300Listen staticMode httpBind *:8008Stats enableStats Uri/haadmin?statsStats Auth Admin:adminStats Hide-versionStats Admin If TRUE650) this.width=650; "height=" 307 "src=" http://a3.qpic.cn/psb?/594581eb-e62e-4426-a878-953c87dd5729/ exgedmzrcoivmqnortgef47wfd3c9gpn47dq8*q5wui!/b/dgybaaaaaaaaek=1kp=1pt=0bo=9ae0aqaaaa

different back-end server in chronological order, and can be automatically rejected if the backend server is down. 2), weight specifies the polling probability, the weight value is proportional to the access ratio, and is used in cases where the performance of the backend server is uneven. 2), ip_hash each request according to the hash result of the access IP allocation, so that each visitor fixed access to a back-end server, you can solve the problem cannot be shared session. 3), fair (third-p

; 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/var/log/nginx/Access.log Main; Sendfile on; #Tcp_nopush on;Keepalive_timeout65; #gzip on;include/etc/nginx/conf.d/*. conf; #set the server list for load Balancingupstream MyServer {#the Weigth parameter represents weights, the higher the weight, the greater the chance of being

0.8.21 development, in other words, it can only be used for the purpose of building a test environment, not for the actual production environment (limited by the number of Windows file handle limit).Download and extract the files in the package to the C drive, in order to configure the use of convenience, I extracted the folder name from "nginx-0.8.19" to "Nginx", so that we will be load-balanced site in IIS after setting up, Put the corresponding li

0.8.21 development, in other words, it can only be used for the purpose of building a test environment, not for the actual production environment (limited by the number of Windows file handle limit).Download and extract the files in the package to the C drive, in order to configure the use of convenience, I extracted the folder name from "nginx-0.8.19" to "Nginx", so that we will be load-balanced site in IIS after setting up, Put the corresponding li

configuration file is divided into six main areas:Main (Global Settings), events (nginx working mode), HTTP (HTTP settings),Sever (Host settings), location (URL match), Upstream (Load balancer server settings). Main module Below a main area, he is a global setting: User nobody nobody; Worker_processes 2; Error_log/usr/local/var/log/nginx/error.log notice; Pid/usr/local/var/run/nginx/nginx.pid; Worker_rlimi

HAProxy is a proxy software that provides high availability, server load balancer, and TCP and HTTP applications, HAProxy is a completely free proxy solution that provides TCP and HTTP applications quickly and reliably with HAProxy. HAProxy is applicable to websites with large loads. these sites usually need session persistence or layer-7 processing. HAProxy supports tens of thousands of concurrent connecti

Server Load balancer solutions include hardware and software solutions. Mainstream hardware solutions: F5 BIG-IP Citrix netscalar A10 A10 Array Redware LVS (Linux virtual server) is a layer-4 network switching or routing software solution. It implements switching or routing through kernel framework module ipvs and a set of rules configured on the framework. Ipvsadm is a tool for configuring routing r

I. IntroductionLinux Virtual Server (LVS) is a Virtual Server in Unix-like systems and one of the most outstanding projects contributed to open-source organizations in China. LVS exists as a front-end (ctor) in Unix-like systems and is also called a scheduler. It does not provide any services, only requests that come in through the Internet are accepted and then forwarded to the real server running in the b

virtual IP from the upper IP addr, the instructions from taking over the service; switching speed quickly;After the Lord initiates the Keepalived service, the master binds the virtual IP, takes over the service;[[Email protected] keepalived]# IP addreth1: The NC command can scan whether the port is open:Scan on other machines, 11.100 and 11.101,11.110 80 ports open;#nc-Z-w2 192.168.11.110 80[Email protected] ~]# nc-z-w2 192.168.11.100 80Connection to

is located Run the Redis-server.exe redis.windows.conf command to start the redis Database Redis Setup Password Opening:redis.windows.conf file Ctrl+f looking for requirepass Cancel the previous # sign and set your own password Tomcat configuration Session sharing 1: Copy the required jar package to the Tomcat server lib directory 2: Configure conf directory under context.xml Host= "127.0.0.1" Port= "6379" password= "Root" database= "0" Maxinactiveinterval= "/>" Host: point to the IP