Preface:
The company has developed a website. The estimated maximum number of online users is 30 thousand, and the maximum number of concurrent users is 100. Whether or not the developed website can withstand this pressure and how to ensure that the load of the website is no problem, after research, it is decided as follows:
(1) Server Load balancer and cluster t
instances on two different physical hosts.
Use case: Make sure that each member in the HA group is configured on a different virtual Machine Manager (physical host).
Set up
Let's pause for a moment and take a look at the symbols and conventions used in this article, as well as some considerations for setting up the environment.
Commands executed as root on the system are prefixed with root@host#.
Use the user@host# sudo as root on the system to prefix with the sudo execution command.
A co
Project Practice 4-haproxy Server Load balancer and ACL control, haproxyacl
Haproxy implements advanced Load Balancing
Environment: With the development of the company's business, the company's server Load balancer service has achieved layer-4 Server
Based on the huge network structure, the use of Cluster Server brings a lot of load problems such as traffic. So the relative, load-balanced technology also emerged. Each technology requires product support, so let's now look at one of the F5 load balancers. So first of all, we first introduce the structure of the product function.Many vendors have launched a
domain name directly resolves to a server (192.168.5.149), by a server load balancer to B server (192.168.5.27) and C server (192.168.5.126).Domain Name resolutionBecause it is not the real environment, the domain name will use a a.com as a test, so a.com resolution can only be set in the Hosts file.Open: C:windowssystem32driversetchostsAdd at the end192.168.5.149 a.comSave exit and then start command mode
192.168.16.16;
# Charset koi8-r;Charset UTF-8;# Set access logs for the current virtual hostAccess_log logs/host. access. log main;# If you access/img/*,/js/*,/css/* resources, you can directly obtain the local document without passing squid# If there are many documents, this method is not recommended because the squid cache has better results.# Location ~ ^/(Img | js | css )/{# Root/data3/Html;# Expires 24 h;#}# Enable Server Load
Based on the huge network structure, the use of cluster servers brings a lot of traffic and other load problems. In contrast, Server Load balancer technology has also emerged. Every technology requires Product Support. Now let's get to know one of F5 Server Load balancer. Fi
I. Concepts of reverse proxy and Server Load balancer
Before understanding the concepts of reverse proxy and Server Load balancer, we must first understand the concept of a cluster. Simply put, a cluster is a server that does the same thing, such as a web cluster, database cluster, and storage cluster, the cluster has
Server Load balancer and cluster configuration for Apache + Tomcat
Experiment topology:
I. Matching Environment
(1 ). Tomcat installation and configuration
Tomcat_a's IP Address: 192.168.55.229
Tomcat_ B IP: 192.168.55.231
Tomcat installation of JDK and tomcat package (such as apache-tomcat-6.0.30.zip and jdk-6u5-linux-x64.bin)
For installation and configuration of Tomcat, refer to my blog:
Http://blog.csd
Author: sodimethylSource: http://blog.csdn.net/sodmeDisclaimer: This article may be reproduced without the consent of the author, but any reference to this article must indicate the author, source and the declaration information. Thank you !!
In network applications, "Server Load balancer" is no longer a new topic. From hardware to software, there are also many ways to achieve Server
Apache implements the Load balancer parameter "proxypass/balancer://proxy/", where "Proxypass" is the command that configures the virtual server, "/" represents the URL prefix for sending Web requests, such as: http://myserver/Or HTTP://MYSERVER/NODE1, these URLs will conform to the above filter conditions, "balancer:/
Load balancing is our big traffic site to do a thing, let me introduce you to the Nginx server load Balancing configuration method, I hope to have the necessary students help OH.Load BalancingLet's start with a quick look at what is load balancing, which is interpreted literally to explain the average load sharing of n
Load balancing is our big traffic site to do a thing, let me introduce you to the Nginx server load Balancing configuration method, I hope to have the necessary students help OH.Load BalancingLet's start with a quick look at what is load balancing, which is interpreted literally to explain the average load sharing of n
Load Balancing is built on the existing network structure, it provides a cheap, effective, and transparent method to expand the bandwidth of network devices and servers, increase throughput, enhance network data processing capabilities, and improve network flexibility and availability.
I have recently learned many articles about Server Load balancer technology on
Introduction to load Balancing clusters
The software that realizes load Balancing cluster is: LVS, keepalived, Nginx, Haproxy and so on. The LVS belong to four layer (network OSI model), Nginx belongs to seven layer, haproxy can be considered as four layer, also can be used as seven layer.
The Keepalived load balancing function is actually the LVS
ipvsadm start ipvsadm -C #清除内核虚拟服务器表中的所有记录 ipvsadm -A -t 12.0.0.1:80 -s rr #创建虚拟服务器 ipvsadm -a -t 12.0.0.1:80 -r 192.168.10.51:80 -m ipvsadm -a -t 12.0.0.1:80 -r 192.168.10.52:80 -m ipvsadm
Options for the IPVSADM management tool use:
-A: Indicates adding a virtual server
-T: Used to specify the VIP address and TCP port
-S: Used to specify load balancing scheduling algorithm
-A: Indicates adding a real server
Microsoft Azure's Load balancer is a Layer-4 load balancer. The Microsoft Azure load balancer distributes the load between a set of available servers (virtual machines) by calculating t
Http://www.php100.com/html/program/nginx/2013/0905/5525.htmlLoad balancing is our big traffic site to do a thing, let me introduce you to the Nginx server load Balancing configuration method, I hope to have the necessary students help OH.Load BalancingLet's start with a quick look at what is load balancing, which is interpreted literally to explain the average load
I.DemandNginx as a load balancer server, the user requests to reach nginxFirst, and then by Nginx According to the load configuration to forward the request to Tomcat server. Nginx Load Balancer server:192.168.101.3TOMCAT1 server:192.168.101.5TOMCAT2 server:192.168.101.6Ii.
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