load balancer virtual appliance

hardware vendors integrate this technology into their vswitches as a function of layer-4 switching, generally, the Server Load balancer policy is randomly selected and assigned based on the server connection quantity or response time. Because address translation is relatively close to the lower layer of the network, it is possible to integrate it into hardware devices. Generally, such hardware devices are

(usually user_id )? How does the data layer differentiate fields from Route to a specific DB? Perform data operations in the specified DB. This is because no cluster is introduced. What will it look like when a cluster is introduced? As shown in figure 1, we can see that the rules and policies on our routers can only be routed to a specific Group, that is, only one virtual Group can be routed. This Group is not a specific physical server. The next st

-RCV-hop-for-Resp ! SLB virtual-server DNS-dianxin 192.168.10.16 Extended-Stats Port 53 UDP Gslb-enable Use-RCV-hop-for-Resp ! SLB virtual-server dns_liw.g 192.168.10.18 Extended-Stats Port 53 UDP Gslb-enable Use-RCV-hop-for-Resp In a multi-link environment, enable the source/output function in port53 UDP. Use-RCV-hop-for-resplserver mode vs. proxymode Load servi

: 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

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 sendin

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

-machine interoperability" and so on.2. Load Balancer cluster (load Balance Cluster)LBProvides a load capacity that is proportional to the number of nodes, which is suitable for services that need to provide heavy load traffic, such as the web. The more famous of these clust

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 routes for

) The remote system (that is, server) uses a socket buffer size of 229376 bytes2) The Local system (that is, client) uses a socket size of 65507 bytes to send buffers3) The test takes 120 seconds to experience4) Throughput test result is 961 mbits/sec1) The remote system (that is, server) uses a socket buffer size of 87380 bytes2) The Local system (that is, client) uses a socket size of 16384 bytes to send buffers3) The test takes 120 seconds to experience4) Throughput test result is 941 mbits/s

traffic. LVS only distributes requests, but the traffic does not go out of it. This ensures that the I/O performance of the balancer will not be affected by the large traffic.5. a wide range of applications. because LVS works on layer 4, it can load balance almost all applications, including http, databases, and online chat rooms. LVS has the following disadvantages:1. the software itself does not support

Detailed description of LVS Server Load balancer cluster service establishment I. LVS Overview 1. LVS: Linux Virtual Server Layer-4 Switching (Routing): forwards request packets to a server in the backend host Cluster Based on the target IP address and target PORT (based on Scheduling Algorithm ); Load Balancing at the

front-end is the Server Load balancer, which is responsible for distributing various service requests to the subsequent physical servers, so that the entire cluster is like a virtual server serving the same IP address.3. Operating Principles and advantages and disadvantages of LVS: Linux virtual server is mainly imple

Address: http://www.agilesharp.com/u/yanyangtian/Blog.aspx/t-196 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 Lo