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: 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
) 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
-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
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
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
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
priority 100 -> priority 90 #从调度器优先级Start KeepAlive#先主后从分别启动keepalivesystemctl start keepalived.servicesystemctl status keepalived.service3. Test the HA characteristics of the keepalived(1) Virtual IP address driftFirst execute the command IP addr on master (LVS1), you can see the VIP on the master node;At this point if the Systemctl Stop keepalived.service command is executed on master, the VIP is no longer on master and the IP addr command on the
to modify client and server-side programs. To do this, you need to consider system transparency, scalability, high availability, and manageability at design time.650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M01/80/4B/wKioL1c9eDvBFVmAAAB49gJNA28736.png "title=" 00.png "alt=" Wkiol1c9edvbfvmaaab49gjna28736.png "/>The LVS cluster adopts three-layer structure and its main components are:1) Load Scheduler (B
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
, it can load balance almost all applications, including HTTP, databases, and online chat rooms. LVS has the following Disadvantages: 1. software itselfRegular Expression Processing is not supported, and dynamic/static separation cannot be performed.But now many websites have strong requirements in this regard. This is the advantage of nginx/haproxy + keepalived.2. If there are a large number of website applications, the implementation of LVS/DR +
Recently, when using Microsoft cloud, we found that azure launched the standard version of Server Load balancer, which should be good news for many users with high security requirements, you can configure SNAT. With azure Server Load balancer, you can: Load Balancing the I
each of the four servers. The remaining IP address is called "virtual IP Address", which is used to share the two Server Load balancer nodes. Architecture details The configuration information is as follows: Server Load balancer Node 1: lb1.mytest.com (lB1); IP Address: 192
securityAny requests from the Internet must go through a proxy server1.3.2 Configure caching to accelerate Web requestsCan cache some static resources on the real Web server, alleviate the load pressure of the real Web server1.3.3 For load BalancingAct as a Load Balancer server to distribute requests evenly and balanc
packets into small data segments and distribute them to multiple parallel lines. It can also dynamically allocate dialing lines based on the current Link Utilization. Although the speed is very slow, because packet segmentation and additional buffering increase latency, it can run well on low-speed lines.The link aggregation system increases the complexity of the network, but also improves the reliability of the network, so that people can use redundant routes on the lines of key LAN segments s
, firewall-packet filtering, packet disinfection, and more. Below are F5 Big-IP used as HTTP The main features of the load balancer are: ①, F5 big-IP provides 12 flexible algorithms to distribute all traffic evenly to each server, while facing users, it is just a virtual server.②, F5 big-IP can confirm that the application can return the corresponding data to
. In transparent mode, the Server Load balancer system transmits the IP address of the original client as the source IP address. In non-transparent mode, the Server Load balancer system uses the virtual IP address (VIP) of the Server Loa
. The complete network load balancing and high availability network technology are composed of two aspects: one is multi-server binding and load balancing, and the other is a server load balancer bound with multiple NICs, here we mainly discuss the server load
big-IP as an HTTP load balancer:①, F5 big-IP provides 12 flexible algorithms to distribute all traffic evenly to each server, while facing users, it is just a virtual server.②, F5 big-IP can confirm that the application can return the corresponding data to the request. If a server behind F5 big-IP has a service stop, a crash, and so on, F5 checks it out and iden
Role of the reverse proxy1.3.1 Secure Your websiteAny requests from the Internet must go through a proxy server1.3.2 Configure caching to accelerate Web requestsCan cache some static resources on the real Web server, alleviate the load pressure of the real Web server1.3.3 For load BalancingAct as a Load Balancer serve
more famous sites and organizations are using LVS set up the cluster system, For example: The Linux portal (www.linux.com), real Company (www.real.com), the world's largest open source website (sourceforge.net), which provides audio and video services to RealPlayer.II. structure of the LVS systemThe server cluster system with LVS is composed of three parts: the most front-end load balancer layer, represent
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