load balancer port forwarding

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

I. Introduction of LVSLVS 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. LVS is a TCP/IP-based load balancing technology that has high forwarding efficiency and the ability to process millions of concurrent connection requests.The IP load balancing tec

, and receiving the results returned by the actual server. If the request processing overhead is small, the forwarding overhead will be particularly obvious, and the most competent requirement for file downloading redirection is basically a disaster for reverse proxy; as a reverse proxy for all requests, the performance of the proxy determines the system performance to a large extent.IP Server Load

example, in the above case, three servers: Server a ip Address: 192.168.5.149 (master) Server B IP Address: 192.168.5.27 C Server IP Address: 192.168.5.126 We resolve the domain name to server A, and then forward the domain name to server B and server C by server A. Then server A only provides A forwarding function. Now we have server A provide site services. Let's analyze it first. If you add the master server to upstream, there may be two situation

returns it to the front-end Nginx server. The front-end Nginx server then forwards the dynamic page response to the Web browser. 2.Server Load balancer application scenarios: After receiving a large number of HTTP requests, the Nginx front-end tries its best to evenly distribute requests to the game servers on each server through certain policies to avoid the pressure on a single server. Iii. configuratio

) * (ADDRESS = (PROTOCOL = tcp) (HOST = 192.168.7.2) (PORT = 61868) * establish * GOBO4 * 0 12---2012 12:01:09 * (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = GOBO4) (CID = (PROGRAM = sqlplus @ SZDB) (HOST = SZDB) (USER = oracle) (INSTANCE_NAME = GOBO4B) * (ADDRESS = (PROTOCOL = tcp) (HOST = 192.168.7.2) (PORT = 61872) * establish * GOBO4 * 0 # At 12:01:04 on 12---2012, the connection information co

disadvantage of Nginx.2. backend server health check only supports Port detection, but does not support url detection. Direct Session persistence is not supported, but can be solved through ip_hash. LVS: implements a high-performance and high-availability server load balancer using Linux kernel clusters. it has good Scalability, Reliability, and Manageability ).

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

S:dip D:rip address is additionally encapsulated in the packet envelope.Director and Real Server must be in the same physical network;RIP must not be a private address;The Director is only responsible for processing incoming packets;Real server returns the packet directly to the client, so the real server default gateway cannot be a dip and must be the address of a router on the public network;Director cannot do port remapping;Only the operating syst

server C by server A. Then server A only provides A forwarding function. Now we have server A provide site services. Let's analyze it first. If you add the master server to upstream, there may be two situations: 1. The master server is forwarded to other IP addresses, and other IP addresses are processed properly; 2. The master server forwards the IP address to the master server and then allocates the IP address to the master server. If the IP addres

= 2Proxypass is the proxy forwarding URL, which forwards all access/requests to the cluster balancer: // tomcatclusterBalancermember is a member of the cluster, that is, cluster server a or server B. The Server Load balancer forwards requests to balancermember according to the Server

not only a good load balancer/reverse proxy software, it is also a powerful Web application server. Lnmp is also a very popular web architecture in recent years and has a good stability in high-traffic environments. 6, Nginx now as the Web reverse acceleration cache more and more mature, faster than the traditional squid server, you can consider using it as a reverse proxy accelerator. 7, Nginx can be us

Currently using a hardware load balancer as an Exchange deployment scenario, using a hardware load balancer a good advantage is that the load of the application can be distributed more evenly to the servers in each backend, there are two different modes of operation of the h

address: Http://client.com/consumer/dept/list. This time with the Ribbon and Eureka after the integration of the user no longer pay attention to the specific Rest service address and port number, all the information is obtained through Eureka complete.2.2. Ribbon Load BalancingThe above code shows that there is a load-balanced annotation in the Ribbon: @LoadBala