Reprint please explain the source: http://blog.csdn.net/cywosp/article/details/38036537
First, let's take a look at the layer chart of the TCP/IP protocol family that everyone is very familiar with: the role of each layer in the network packet transmission process is not the focus of this article, this article mainly explains how to use IP addresses at the network layer for server cluster
Server Load balancer
SLB Load Balance 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
from:http://yuhongchun.blog.51cto.com/1604432/697466
Now the trend of Web site development on the use of Network Load balancing with the increase of site size according to different stages to use different technologies:One is the hardware to carry out, the common hardware has more expensive NetScaler, F5, Radware and array and other commercial
F5 is a well-known Server Load balancer product. I believe many people will not know it. So how does it maintain sessions? Let's start with the definition of session persistence. As an image metaphor: Session persistence can be seen as a string of pearls, so we split each Pearl and put it in a different box for storage and then put it into a string, that is, the
Three major software load balancer comparisons (LVS, Nginx, HAproxy)(Information from the network, made part of the supplementary instructions)LVS:1. Strong anti-load capability, high performance, can reach F5 60%, low memory and CPU resource consumption2. Work in the
Load BalancingMainstream open source software: LVS, keepalived, Haproxy, Nginx and so on;OSI Layer: LVS (4), Nginx (7), Haproxy (4, 7);The Keepalived load balancing function is actually the LVSLVS Load balancer can distribute other ports than 80, such as MySQL, while Nginx only supports HTTP, https, mail;LVS Introducti
IDC) is not enough. Most sites that require Server Load balancer services have a large number of concurrent accesses, most of these sites have remote backup servers. Therefore, Server Load balancer devices used in more professional IDC data centers can also penetrate network
Tags: encountering TCP No EBE requirements problem ber configuration attachmentCurrently in the use of F5 to the database load encountered a problem, to the database load (here does not involve the problem of read and write separation, because it is a one-to-two load pool memeber only a) according to customer requireme
Now, basically all enterprises use the network for daily work. In the network operation of an enterprise, the transmission and data sending and receiving processes are not evenly distributed. Then, using Server Load balancer technology can achieve a balanced concept. So how to implement it? If it is not realistic to pu
Linux Server load balancer-load average
In the previous article, we introduced how to use the w command or the uptime command to view the average Load (avaerage) of the Linux system. What is the normal status of the average Load? How should we define the stability of the sys
CentOS by default)
Program code working on the netfilterINPUT hook on the kernel; its cluster function depends on the Cluster Server rules defined by ipvsadm;
Supports a wide range of services based on TCP, UDP, SCTP, AH, EST, AH_EST, and other protocols;
4. Key points for timing in a server Load balancer cluster:
(1) session persistence
Session sticky (iphash): IP Address binding. The source ip address r
, improving network flexibility and availability.
Server Load balancer has two meanings: first, a large amount of concurrent access or data traffic is distributed to multiple node devices for separate processing, reducing the user's waiting for response time. Second, computing of a single heavy load is distributed to m
Not long ago I was in charge of a well-known national manufacturing group's load balancing project. I was deeply touched by the project's application of gslb in a specific environment and learned a lot of related Load Balancing knowledge. Today, let's calm down and think about how to learn a lot through the project. during the project implementation process, we have encountered quite a number of problems. N
When it comes to the Web cluster, we can't help but say that LVs is a very good open source software for load cluster, compared with some hardware load, LVS has many excellent performance, such as cheap, stable, support high concurrency scenarios in most cases, below to tell you about the origin of LVS and basic introductionI. The concept of LVSLVS is the abbreviation for Linux virtual server, which is the
One, LVS three kinds of packet forwarding methodLVS provides three packet forwarding methods: NAT (Network address mapping), IP tunneling (IP tunneling), direct Routing (straight route)Different forwarding mode determines the network structure of different cluster, and the following three kinds of forwarding methods are respectively started:1. NAT (Network addres
Author: road ahead
Source: http://www.blogjava.net/carter0618/archive/2007/10/16/153131.htmlload balancing
A large number of links to the Server Load balancer documentation are collected here for future use.
Server Load balancer technology shenghuafen
Cluster load bal
Defined:LVS is a shorthand for Linux virtual server, that is, a virtualized server cluster system.Structure:In general, the LVS cluster uses a three-tier structure, the main component of which is: A, Load Scheduler (load balancer), it is the entire cluster to the outside of the front-end machine, responsible for sending the customer's request to a set of servers
Cluster service and who is the backend real server
Iii. related Terms of LVS
Ds:director Server, which refers to the front-end load balancer node.
Rs:real server, backend real work server.
VIP: An IP address that is directed externally to a user request as the target of a user request.
Dip:director Server IP, front-end load
: This article mainly introduces apache and nginx server load balancer configurations. For more information about PHP Tutorial, see.
I. apache server load balancer is actually very powerful in operating apache. Recently, I have studied apache reverse proxy and server load
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