I. LVS principles
1. The full name of LVS is Linux Virtual Server, that is, Linux Virtual Server. It is an open-source project of Dr. Zhang Wenyu from our country. In linux memory 2.6, it has become a part of the kernel. in earlier versions, the kernel needs to be re-compiled ., LVS is mainly used for multi-server load balancing. It works at the network layer to implement high-performance and high-availability server cluster technology. It is cheap an
There are many Server Load balancer solutions. The haproxy + keepalived solution is used here.
Introduction
Haproxy Introduction
Haproxy is a high-performance TCP/HTTP load balancing server software with fast speed and high availability. It is applicable to all TCP or HTTP-based applications, especially for busy Web Se
IIS Server Load balancer-Application Request Route: ARR introduces Server Load balancer. I believe you are no longer familiar with it. This series mainly introduces the Server Load balancer so
In network applications, "Server Load balancer" is no longer a new topic. From hardware to software, there are also many ways to achieve Server Load balancer. The server Load balancer d
systems or different hardware. For example, a cluster that provides Web Services is a large Web server. However, cluster nodes can also provide services separately.3. Features: based on the existing network structure, Server Load balancer provides a cheap and effective method to expand server bandwidth and increase throughput, enhance network data processing capabilities, and improve network flexibility an
resolved to the Internet/Internet virtual IP address of the F5 Server Load balancer: 61.1.1.3 (vs_squid), and there is a server pool (pool_squid) under the virtual IP address ), the server pool contains two real Squid servers (192.168.1.11 and 192.168.1.12 )。
② If the Squid cache is not hit, the system will request F5
as Snat IP)③, Origin Bar selection: Address List④, Address list column: ①type column select Host, fill in to access the Internet, external e-mail network IP address. ② or type column select Network and fill in the network segment and subnet mask to access the Internet, outgoing mail.⑤, VLAN traffic bar selection: Enabled on ...⑥, VLAN list column: Pulls the available column's "internal" to the selected col
;Server 192.168.5.27: 80;Server 127.0.0.1: 8080;}You can add the master server IP192.168.5.149 or 127.0.0.1 to access your own IP address.Restart Nginx, and then visit a.com to see if it will be allocated to the master server.The master server can also be added to the service normally.LastI. Server load balancer is not unique to nginx. It is also known as apache, but its performance may be inferior to nginx
configuration pages are completed:★ Modify Virtual Server Demo page 1:http://blog.s135.com/book/f5/vs_properties.htm★ Modify Virtual Server Demo page 2:http://blog.s135.com/book/f5/vs_resources.htm
10. Create SNAT Secure network address translation, allowing real servers to access the Internet and send messages to the outside world ★ Create Snat Demo page: http://blog.s135.com/book/f5/snat_create.htm 1 , creating SNAT : snat_all_server Click
LVS is an open-source software that implements simple load balancing on the Linux platform. LVS is a Linux virtualServer stands for a Linux virtual server.Advantages:1. Open-source, free2. You can find some technical resources online. 3. Some advantages of software Load BalancingDisadvantages:1. There are common shortc
Detailed explanation of IIS Server Load balancer-application request route Article 1: arr Introduction
Speaking of Server Load balancer, I believe everyone is no stranger. This series mainly introduces the Server Load balancer
Nginx reverse proxy and Server Load balancer
I. Introduction
Reverse Proxy(Reverse Proxy) means to use a Proxy server to accept connection requests on the internet, and then forward the requests to the server on the internal network, return the result obtained from the server to the Client Requesting connection from the inter
I. Concepts of reverse proxy and Server Load balancer
Before understanding the concepts of reverse proxy and Server Load balancer, we must first understand the concept of a cluster. Simply put, a cluster is a server that does the same thing, such as a web cluster, database cluster, and storage cluster, the cluster has
. INVOICE_ITEMS. For details about how to create this scheme and Related Object scripts, see Appendix D: APSetup. SQL.
◆ To fill in the object of the AP solution, I created a package AP. PKG_LOAD_GENERATOR. For its description file and main file, see Appendix E: pkg_load_generator.spc and Appendix F: pkg_load_generator.bdy.
◆ Finally, APInitialization. the SQL code fills the table AP with hundreds of lines of simulated data. VENDORS, and in the AP table. INVOICES creates 25 invoice records in th
Author: sodimethylSource: http://blog.csdn.net/sodmeDisclaimer: This article may be reproduced without the consent of the author, but any reference to this article must indicate the author, source and the declaration information. Thank you !!
In network applications, "Server Load balancer" is no longer a new topic. From hardware to software, there are also many
LVS is a short name for Linux virtual server, the Linux web, is a free software project initiated by Dr. Zhangwensong and is now part of the Linux standard kernel. Prior to the Linux2.4 kernel, the LVS had to be recompiled to support the LVS function module, but since the Linux2.4 kernel, the various functions of LVS have been built-in, without any patching of the kernel, and the functions provided by LVS can be used directly. The goal of using LVS te
initiate the request to the server.Based on the characteristics of client load balancing:
Implemented by the client internal program, no additional load balancer hardware and software inputs are required.
Internal procedures need to address the issue of unavailability of the business Server, and server fa
In the past, running a large web application meant running a large web server. Because your application attracts a large number of users, you will have to add more memory and processors to your server. Today, the 'large server' mode has passed and replaced it with "> In the past, running a large web application meant running a large web server. Because your application attracts a large number of users, you will have to add more memory and processors to your server.
Today, the 'large server' mode
Today, the 'large Server' model has passed, replacing it with a large number of small servers, using a variety of load balancing technologies. This is a more feasible way to minimize hardware costs.
The 'more servers' mode has more advantages than the 'large Server' mode in the past. It is reflected in two aspects:
1. If the server goes down, the Server Load balan
and high availability and avoid spof.
In addition, the first method can be implemented by using the Keeoalive Software Based on VRRP routing protocol.
Method 2:(1): The domain name www.bkjia.com is resolved to the virtual IP address 61.1.1.2 and 61.1.1.3 through DNS round robin.(2) Under normal circumstances, the server is bound with a virtual IP address.Run the following command on server 161.1.1.4/Sbin/ifconfig etho: 1 61.1.1.2 broadcast 61.1.1.255
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