Keepalived + HAProxy implements the configuration of MySQL high-availability load balancing, keepalivedhaproxy
Keepalived
Because mysqlcluster is used in the production environment, high-availability load balancing is required. keepalived + haproxy is provided here.
Keepalived is mainly used to implement fault isolation of real machines and failover between load balancers. It can be switched at Layer 3, 4,
SchemeIn the previous article, we discussed the theoretical knowledge of load balancing, and this article I intend to talk about practical methods and problems encountered in practiceScenario: Haproxy HTTP Layer Load BalancingInstall a Haproxy service, two Web servicesHaproxy:192.168.1.227:80Web1 Http://192.168.1.226:8081/loginWEB2 Http://192.168.1.246:8888/loginThe Web service is prepared for itself, and t
Recently, a company's business has been growing fast, resulting in heavy pressure on front-end servers. in order to solve this problem as soon as possible, I submitted a request for purchasing servers to the company. soon the company approved the request and the servers were in place. how can we reasonably utilize the resources of newly purchased servers (originally a front-end server)? First, we thought that using nginx for load was a recent rapid development of a company's business, the pressu
1. Preface
The previous section implemented a technical solution based on LVS (DR) + keepalived cluster. However, in terms of usage and maintenance, it was found that it is more difficult to maintain and implement than the haproxy + keepalived technical solution, the haproxy + keepalived cluster for Web applications is sufficient. Therefore, we recommend the haproxy
Today, I changed the logo on the haproxy webpage and changed haproxy to cs2c load balance. Control the files displayed on the webpage in include/common/version. h.
Copy the RPM package downloaded from the internet and write a spec file:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Summary: haproxy Load
Software load balancing is generally implemented in two ways: Software load implementation based on the operating system and software load implementation based on third-party applications. LVS is a kind of soft load based on the Linux operating system. haproxy is an open-source software load based on the third application.
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Software load balancing is generally implemented in two ways: Software load implementation based on the operating system and s
The HAProxy reverse proxy server supports dual-host hot standby and supports virtual hosts. the configuration is simple and has a very good server health check function. When the back-end server of the proxy fails, HAProxy will automatically remove the server, and then automatically add the server after the fault is restored. Mysql Cluster Proxy
The HAProxy rever
Build a Web cluster using Haproxy
Case Overview: Haproxy is currently a popular cluster scheduling tool. In comparison, LVS performance is the best, but the construction of complex, Nginx upstream module support cluster function, but the cluster node health Check function is not strong, performance is not haproxy good.
Lab Environment:
Tags: outer netstat bind stat Code load Blog backend service textHttp://www.cnblogs.com/tae44/p/4717334.html Experimental system: CentOS 6.6_x86_64 (2.6.32-504.30.3.el6.x86_64) Lab Prerequisites: Firewall and SELinux are off The experiment shows that there are 4 hosts in this experiment, such as the topology of IP assignment Experimental software: keepalived-1.2.19 haproxy-1.5.14 mariadb-10.0.20 : Http://pan.baidu.com/s/1bnnYiMr Experimental topology:
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
Haproxy + Apache for Linux Server Load balancer Software
Haproxy provides high availability, Server Load balancer, and reverse proxy Based on TCP and HTTP applications, especially for websites with extremely high loads that usually require session persistence or layer-7 processing. Haproxy runs on the current hardware and supports tens of thousands of concurrent
Keepalived
Due to the use of mysqlcluster in the production environment, high availability load balancing is required, and keepalived+haproxy is provided here for implementation.
The main function of keepalived is to realize the fault isolation of the real machine and the failover between load balancer. Can be exchanged at the 3,4,5 layer. It is implemented through VRRPV2 (Virtual Router redundancy) stack.
Layer3:keepalived periodically to servers
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
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