F5 Load Balancing PrincipleI. Server Load balancer Technology
The server Load balancer technology provides a cheap, effective, and transparent method based on the existing network struc
overhead is very small, so it has a very small throughput.
Server pool is a group of servers that actually execute customer requests. The tasks are WEB, MAIL, FTP, and DNS. The number of nodes in the server pool is variable. When the load received by the system exceeds the processing capacity of all sites, you can add servers in the server pool to meet the increasing request load. For most websites, there
. Both the WEB and the WEB are connected to that database, so that the two WEB contents are synchronized, then load the two WEB servers. below is my COPYNetwork Load Balancing allows clients to access the cluster with a logical Internet Name and virtual IP address (also known as the cluster IP address), while keeping the names of each computer. Next, we will introduce the implementation and application of
Both LVS and Nginx can be used as multi-host load solutions. They have advantages and disadvantages. in the production environment, you need to analyze the actual situation and make use of it.First of all, I would like to remind you that technology is not a cloud, and my cloud is your cloud. At the same time, we should not be too conservative, too confident in the old method and wait for others to help you with the advance test. It is a good habit to
Recently want to be able to configure load balancing, in the virtual machine above, but the Internet to find a lot of information is fragmented, for people who do not know, a lot of not enough detail, recently finally done, the specific steps to write down, convenient for you to read the studyThis experiment requires the installation of Nginx if not installed, please refer to:Linux installation nginx:http://www.cnblogs.com/aspirant/p/6714548.html(1) O
Load balancer.
dynamic ratio: is similar to weight, but the weight value varies with continuous monitoring of the server. This is a dynamic load balancing algorithm based on real-time analysis of server performance, such as the number of connections or response times.
Plain Programmer Description:
If you think of Weighted Round Robin
Build a mysql Server Load balancer and a high-availability environment and a mysql Server Load balancer
Objective: To use two hosts to achieve Mysql load balancing and redundancy, and achieve dual-master-slave mutual backup;
Environment: rhel5.8, mysql-5.0.77, keepalived-1.2
Load balancer dedicated devices, which are available from many companies. The use of specialized hardware equipment provided by specialized companies is very valuable to many companies with specific requirements, such as banking, telecommunications and other industries, but hardware aging speed is too fast, feel a device has not started to use, it is going to enter the recession period. I also vaguely remem
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F5 Full Name: F5-BIG-IP-GTM Global traffic manager.
is a company called F5 Networks development of the four-seven-layer switch, hardware and software bundles.
It is said to have originally used BSD systems, which are now Linux; hardware is Intel's PC architecture, plus the surrounding
the environment.
4. E-commerce Web site High-performance, highly available solutions, LVS load balancing (front-end four-tier load balancer).
5. The key point explanation of the construction process, the key step explanation.
6. This program has been used in practical production applications for many times, and can be flexibly applied.
Second, the software
/*** Lihaibo* The content of the article is based on the practice of their own work.* If there is an error, please correct me* No reprint without the consent of the author*/Planning:
F5
Big Big-IP
Intranet
192.168.100.0
255.255.255.0
External network
10.50.20.0
255.255.255.0
Virtual Server
Vs_
At present, the global application of a wide range of load balancing equipment for the United States F5. F5 in China in the end of 2000, in the domestic industry, F5 load balancing products have become the mainstream load balancin
logical link, which is the link aggregation Trunking) technology. It is not an independent device, it is a common technology used by switches and other network devices.
As you can see, traditional Server Load balancer is only a load balancing technology. Currently, in the face of complex
network data processing capabilities, and improve 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, the operation
Load balancers are often referred to as four-tier switches or seven-tier switches. The four-layer switch mainly analyzes the IP layer and the TCP/UDP layer to achieve four-layer flow load balancing. In addition to supporting four-tier load balancing, the seven-tier switch also contains information on the analysis application layer, such as HTTP protocol URI or co
As a Linux/Unix system engineer, I have been involved in external projects over the past few years. I have worked on the architectures of many small and medium-sized websites. F5, LVS, and nginx have many contacts, I want to explain to you what Server Load balancer is and what is a Linux cluster in a simple and easy-to-understand tone, to help you get out of this
to the server load balancer algorithm. (A device that distributes network requests to available servers in a server cluster)
Role of server load balancer (solved ):
1. Solve the concurrent pressure and improve the application processing performance (increase the throughput
PS: nginx/LVS/haproxy is currently the most widely used three load balancing software. I have implemented these software in multiple projects. I have referenced some materials and combined some of my experience in using it, to sum up.
Generally, Server Load balancer uses different technologies at different stages as the website scale increases. Specific Applica
: This article mainly introduces (summary) the advantages and disadvantages of NginxLVSHAProxy server load balancer software. For more information about PHP tutorials, see. PS: Nginx/LVS/HAProxy is currently the most widely used three load balancing software. I have implemented these software in multiple projects. I have referenced some materials and combined som
Nginx/lvs/haproxy Load Balancer software pros and consHttp://www.ha97.com/5646.htmlPs:nginx/lvs/haproxy is currently the most widely used three load balancing software, I have been implemented in a number of projects, reference to some information, combined with some of their own experience, summed up.The general use of load
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