load balancing web services

Step1: Three Web Server Environment configuration: iptables-f; Setenforce 0 shut down the firewall; close SetlinuxStep2: Three Web server install softwareSTEP3: Host modification configuration file: vim/usr/local/nginx/conf/nginx.confProxy Server Modify the file: Modify the port, the port can be set by itself, do not change the default is OK, but the corresponding matchFor test needs, change the HTML files

; (down indicates that the current server is temporarily not participating in the load)Server 127.0.0.1:8080 weight=2; (weight defaults to 1.weight, the greater the load weight)Server 127.0.0.1:6060;Server 127.0.0.1:7070 backup; (When all other non-backup machines are down or busy, request the backup machine)}Max_fails: The number of times that a request failed is allowed defaults to 1. Returns the error de

How to use pfSense for load balancing for your web services Note: pfSense has two types of load balancing: one is to set multiple WAN for dual-line load

172.10.16.99 address, 172.16.10.66 host added 172.16.10.99 Addressd) Start the 172.16.10.16 keepalived service to see if the 172.16.10.16 host has added 172.16.10.99 address, 172.16.10.66 whether the host deleted 172.16.10.99 Address3. Add virtual server for load Balancing function1) Add the following after the above configuration file:Virtual_server 172.16.10.99 80 {Delay_loop 3 # # Polling Time Lb_algo W

adjust the scheduling policy based on the Real-Time Load difference of the actual server, the DNS server needs to analyze the health status of each server during each resolution operation. For the DNS server, this kind of custom development has a high threshold, not to mention that most sites only use third-party DNS services. 4. DNS record caching. The caching of different programs on DNS servers at all l

algorithm for load balancing is set up in Azure and cannot be modified. The algorithm relies mainly on five tuples (source IP, source port, destination IP, destination port, protocol type).Azure virtual Machine By default, only RDP ports and PowerShell ports are turned on, and the other ports are turned off.To test, we install and open the Web service for 2 virt

/ { proxy_pass http://127.0.0.1; } }}B. Start consul-template with a command consul-template -consul-addr 127.0.0.1:8500 -template "2.tpl:conf/nginx.conf:nginx -s reload"C. Create Sitec.json, use curl to register SiteC to consul, Sitec.json content as follows{ "ID":"webC", "Name":"web", "Tags":[], "Address":"127.0.0.1", "Port":94, "Checks":[{ "http":"http://127.0.0.1:94/healthcheck.html", "interval"

Terminal Services Session broker (TS session Broker) is included in Windows Server (R) 2008 Standard, Windows Server 2008 Enterprise, and Windows Server 2008 Datace Nter, it can track disconnected sessions on a Terminal server farm and ensure that users are reconnected to these sessions. In addition, the use of TS session Broker can also load-balance sessions between terminal servers in the farm. This featu

Load Balancing cluster (LB)How load Balancing clusters workWhen a user sends a request, the request is not immediately sent to the backend's real server (realservers), but is sent first to the Scheduler or Distributor (Director), and then the director, based on some scheduling algorithm, The request is sent to the back

Reference: http://www.cnblogs.com/lovingprince/archive/2008/11/13/2166350.htmlHttp://www.cnblogs.com/lovingprince/archive/2008/11/13/2166349.htmlhttp://news.cnblogs.com/n/208124/http://network.51cto.com/art/201108/281452.htmThe concept of load balancingA Web cluster is made up of multiple servers running the same Web application at the same time, and in the outsi

"Reading notes" to understand service routing and load Balancing, micro-services to get up 1 Basic Concepts Soa The public business is split up to form a shared service that maximizes the reuse of code and logic and avoids duplication of construction, a design called an SOA. Routing In the SOA architecture, service Consumers find the address list of

, memory capacity, disk and so on, to achieve the improvement of server processing capacity, can not meet the large-scale Distributed System (website), large traffic, high concurrency, massive data problems. Therefore, a scale-out approach is required to accommodate the processing power of large Web services by adding machines. For example: A machine can not be satisfied, then add two or more machines, the

capacity, such as CPU processing capacity, memory capacity, disk and so on, to achieve the improvement of server processing capacity, can not meet the large-scale Distributed System (website), large traffic, high concurrency, massive data problems. Therefore, a scale-out approach is required to accommodate the processing power of large Web services by adding machines. For example: A machine can not be sati

E-commerce Web site technology architecture with over 1 million visits The first introduction to E-commerce Web site high-performance, highly available solutions. From the frame composition of the scheme, the application is lvs+keepalived load balance. Achieve high-performance, highly available solutions (server clusters,