1. The architecture diagram of this article:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/25/90/wKioL1Nki0jiTqeUAAE35qbWq7g043.jpg "title=" Haproxy, Keepalived.png "alt=" Wkiol1nki0jitqeuaae35qbwq7g043.jpg "/>Describe the purpose of each server:1, Haproxy in this framework is the implementation of: Load Balancing2, keepalived to achieve the high availability of haproxy3, Apache static page acce
What is Haproxy?Haproxy is a free and open source software written in C that provides high availability, load balancing, and TCP and HTTP-based application proxies that can run on most major Linux operating systems.This experiment uses three servers to build a Web cluster, haproxy as a dispatch server, two Nginx servers as node servers.Experimental environment
A. What is Haproxy
Haproxy provides high availability, load balancing, and proxies based on TCP and HTTP applications to support virtual hosts, a free, fast, and reliable solution. Haproxy is especially useful for Web sites that are heavily loaded, which typically require session maintenance or seven-tier processing. Haproxy
I system RedHat6.4, haproxy version is haproxy-1.3.15.10.tar.gzInstallationinstallation PCRE– [Email protected]~]# yum-y Install pcre pcre-devel Unzip and enter the Haproxy directory– [Email protected]~]# tar xvzf haproxy-1.4.24.tar.gz– [[Email protected]~]# CD haproxy
1.HAProxy Introduction
Haproxy is an open-source, high-performance, load-balancing software based on TCP (four-tier), HTTP (seven-tier) applications. That haproxy as a professional load balancer software, it has the following advantages:
Very good reliability and stability, comparable to hardware-level F5 load balancing devices
. Up to 40000-50000 concurrent conn
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 Load balancer, but the business complexity has increased, the company requires the mobile phone site as a separate service to provide, if you do not provide
Haproxy compared to the use of LVS is much simpler, functional aspects are also very rich. Currently, Haproxy supports two main proxy modes: "TCP" is also 4 layers (mostly for mail servers, internal protocol communications Servers, etc.), and 7 tiers (HTTP). In 4-tier mode, Haproxy only forwards bidirectional traffic between the client and the server. In 7-tier m
Haproxy Introduction:Haproxy provides high availability, load balancing, and proxies based on TCP (layer fourth) and HTTP (layer seventh) applications, supporting virtual hosts;Haproxy is especially useful for web sites that are particularly heavily loaded, and often require session-hold or seven-tier processing. Haproxy runs on today's hardware, fully supports t
HAProxy provides high availability, Server Load balancer, and TCP and HTTP application-based proxy. It supports Virtual Hosts and is a free, fast, and reliable solution. HAProxy is especially suitable for websites with extremely high loads, which usually require session persistence or layer-7 processing. HAProxy runs on current hardware and supports tens of thous
Haproxy is a popular cluster scheduling tool, with many similar cluster scheduling tools, such as LVS and Nginx. In comparison, LVS performance is the best, but the construction of relatively complex, Nginx upstream module support cluster function, but the cluster node health Check function is not strong, performance is not haproxy good. Lab Environment:
Host
Operating System
IP Ad
Haproxy is a popular cluster scheduling tool, with many similar cluster scheduling tools, such as LVS and Nginx. In comparison, LVS performance is the best, but the construction of relatively complex, Nginx upstream module support cluster function, but the cluster node health Check function is not strong, performance is not haproxy good. Lab Environment:
Host
Operating System
IP Ad
can be used as the default gateway of the LAN client, greatly reducing the possibility that the default gateway becomes a single point of failure;
Load Sharing: allow traffic from LAN clients to be shared by multiple router devices;
Multiple VRRP groups: up to 255 VRRP groups can be configured on one vro physical interface;
Multi-IP Address: You can configure multiple IP addresses on the same physical interface based on the Interface alias to allow access to multiple subnets on the same physica
HAProxy is currently a popular cluster scheduling tool, similar cluster scheduling tool, compared with LVS, LVS performance is the best, but the building is relatively complex, Nginx upstream module support cluster function, but the cluster node health Check function is not strong, performance is not HAProxy good.System environment
Host
IP Address
main software
Overview:Haproxy is a cluster scheduling tool that provides high availability, load balancing, and proxy software based on TCP (layer fourth) and HTTP (layer seventh) applications, supporting virtual hosting, which is a free, fast, and reliable solution. Haproxy is especially useful for Web sites that are heavily loaded, and often require session-hold or seven-tier processing. Haproxy runs on today's hardwa
Haproxy is a popular cluster scheduling tool, with many similar cluster scheduling tools, such as LVS and Nginx. In comparison, LVS performance is the best, but the construction of relatively complex, Nginx upstream module support cluster function, but the cluster node health Check function is not strong, performance is not haproxy good. Lab Environment:
Host
Operating System
IP Ad
HAProxy for Server Load balancer
HAProxy provides high availability, Server Load balancer, and TCP and HTTP application-based proxy. It supports Virtual Hosts and is a free, fast, and reliable solution. HAProxy is especially suitable for websites with extremely high loads, which usually require session persistence or layer-7 processing.
HAProxy is a free, fast, and reliable proxy solution that supports high availability and server load balancer. It is also suitable for proxies for TCP and HTTP-based applications. For some websites with high load, HAProxy is particularly suitable. HAProxy supports tens of thousands of concurrent connections. It is easy to configure and can easily integrate into o
First, install the Haproxy1. Go to the home directory and download the latest Haproxy installation package.Cd/homewget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.24.tar.gz2. Unzip:TAR-ZXVF haproxy-1.4.24.tar.gzRename to HaproxyMV Haproxy-1.4.24.tar.gz HaproxyCreate D
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