haproxy round robin

maintain the affinity of tcp connections in multiple ways (IP, cookie, and session) to ensure the correctness of data interaction. Through a variety of Load Balancing algorithms, internal service programs share the overall service pressure. When a program goes down, HAProxy can automatically distribute the relevant tcp links to other service programs. HAProxy implements eight Load Balancing algorithms: R

local0 log 127.0.0.1 local1 notice #log loghost local0 info maxconn 1024 #chroot /usr/share/haproxy user haproxy group haproxy daemon #debug #quietdefaults log global mode http option tcplog option dontlognull retries 3 option redispatch

haproxy version information cookie SESSION_COOKIE insert indirect nocache maxconn 40960 server nginx1 192.168.100.11: 80 weight 1 cookie nginx1 check inter 2000 rise 2 fall 3 server nginx2 192.168.100.12: 80 weight 1 cookie nginx2 check inter 2000 rise 2 fall 3 listen haproxy02 bind 172.16.1.31: 80 mode http option httpclose option forceclose option forwardfor option originalto option redispatch balance leastconn cookie SESSION_COOKIE insert indirect

inter 2000 rise 2 fall 3 server nginx2 192.168.100.12: 80 weight 1 Cookie nginx2 check inter 2000 rise 2 fall 3 listen reply bind failed: 80 mode http option reply option forwardfor option originalto option redispatch balance resume cookie SESSION_COOKIE insert indirect nocache maxconn 40960 server nginx3 192.168.100.13: 80 weight 1 cookie nginx3 check inter 2000 rise 2 fall 3 server nginx4 192.168.100.14: 80 weight 1 cookie nginx4 Check inter 2000 rise 2 fall 3 #######

it is mapped by default without any matching conditionsBackend app # define a backend part named appBalance roundrobinServer app1 192.168.3.128: 80 checkServer app2 192.168.3.129: 80 checkStats enable # enable the server status monitoring page After the configuration is complete, restart haproxy. Service haproxy restart 4. Test [Root @ usvr-124 haproxy] # curl 1

Brief introductionHaproxy is a free and open source software written in the C language that provides high availability, load balancing, and application proxies based on TCP and HTTP. Haproxy is especially useful for Web sites that are heavily loaded, and often require session-hold or seven-tier processing. The haproxy runs on the current hardware and can support tens of thousands of concurrent connections.

-host hot backup, supports virtual hosts, has a very good server health check function, when the back-end server of the proxy fails, HAProxy will automatically remove the server and automatically add the server after the fault is restored. It also provides an intuitive monitoring page, the service cluster running status can be clearly monitored in real time. In the new version 1.3, frontend and backend configuration segments are introduced. frontend p

Http://hi.baidu.com/coolda/blog/item/b9d9e8f87b2be51bd8f9fd7d.html Installation and deployment of haproxy Considering the concurrency of the company's current server, we finally chose haproxy to achieve load balancing. Compared with other Server Load balancer systems, the configuration and use of haproxy is relatively simple.The following is a self-installed and

Rotten mud: TCP application for learning haproxy with high load balancing, and load balancing haproxy This document consistsIlanniwebProviding friendship sponsorship, first launchedThe world In the previous articles, we introduced the configuration parameters of haproxy, And the configuration examples are all http protocol (layer-7 Application. This article int

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.

connection includes one client and one server, the maximum number of TCP sessions for a single process is twice the value. User haproxy group haproxy daemon # Run nbproc 16 in daemon mode # set the number of processes when haproxy starts. According to the explanation in the official documentation, I understand it: this value should be set to the same number of C

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

is difficult to support cross-message requests (request across multiple packets), and they do not buffer any data and therefore have a longer response time. Correspondingly, the software load balancer device uses TCP buffering to establish extremely long requests and has a large response time.Haproxy Features:1, support two kinds of proxy mode: TCP (four layer) and HTTP (seven layer), support virtual host;2, can add some of the shortcomings of Nginx such as the session of the maintenance, cooki

#---------------------------------------------------------------------42frontend haproxy-lbserver43bind 0.0.0.0:8044acl url_solr_path path_beg /solr-cloud45acl url_static path_beg -i /static /images /javascript /stylesheets46acl url_static path_end -i .jpg .gif .png .css .js4748use_backend static if url_static49use_backend solr-cloud if url_solr_path50default_backend static5152#---------------------------------------------------------------------53# s

HAProxy Usage Details HAProxy details HAProxy is a free, fast, and reliable solution for providing high availability, load balancing, and proxy services for TCP and HTTP-based applications, it is especially suitable for websites with high load and require persistent connections or layer-7 processing mechanisms. HAProxy

Haproxy is currently a popular cluster scheduling tool. Haproxy comparison with LVs and NginxLVS Performance is the best, but the construction is relatively complexNginx upstream module support cluster function, but the cluster node health Check function is not strong, performance is not Haproxy GoodHTTP requestThe protocol used to access a Web site through a URL

logging to log HTTP requests, and Haproxy only logs the TCP logs by default.Option Forwoardfor configures the backend server to obtain the client's real IP, which records the client IP by adding "x-forwarded-for".Option Httpclose Configure the Haproxy to actively close this TCP connection after the client and server have completed a connection request.The log global configuration uses a global logging conf

These days I compare nginx and Haproxy, and come to a surprising result.First, some background information is presented. For a long time, we bengler the Nginx as the main Web server for our project, just as we did under mongrel as a proxy for rails. Nginx is a very good small open source software, it occupies a small space, a reasonable configuration language, advanced features and fast. However, we quickly discovered that the load balancing feature o

Usage Requirements: load-balanced groups can be tocat+nginx with load Balancing clusters and LVS load balancing clusters. Compared to the three population sets, the LVS performance is the best, but the building complex, NINGX upstream module support cluster, but the cluster node fault check function is not many, performance is not comparable to haproxy. Relative to achieve what kind of effect: for the Enterprise Server (WEB.FTP, etc.) can achieve load

Load Balancing with HaproxyFirst, the conceptHaproxy is a free and open source software written in the C language [1] that provides high availability, load balancing, and application proxies based on TCP and HTTP.Haproxy is especially useful for Web sites that are heavily loaded, and often require session-hold or seven-tier processing. The haproxy runs on the current hardware and can support tens of thousands of concurrent connections. and its operati