load balancer virtual appliance

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Spring resttemplate as a load balancer client

Resttemplate can be automatically configured to use the Ribbon. To create a load balancing resttemplate create a resttemplate @Bean and use the @loadbalanced qualifier.Warning: resttemplate beans are no longer created with automatic configuration. It must be created by a single application.@Configurationpublic class MyConfiguration { @LoadBalanced @Bean RestTemplate restTemplate() { return new RestTemplate(); }}public class MyClass

Spring Cloud Commons Tutorial (ii) Spring resttemplate as a load balancer client

RestTemplate can be automatically configured to use the Ribbon. Create RestTemplate RestTemplate @Bean and use @LoadBalanced qualifiers to create load balancing. Warning The bean is no longer created by automatic configuration RestTemplate . It must be created by a single application. @Configurationpublic class MyConfiguration { @LoadBalanced @Bean RestTemplate restTemplate() { return new RestTemplat

Set up a Server Load balancer website for Ubuntu server 10.04, resin 3.1.10, and nginx 0.7.65

Ubuntu server 10.04, resin 3.1.10, nginx-0.7.65 Server Load balancer website Software and Hardware architecture Internet-> fire wall-> F5 Load balancer-> router-> Web servers (Ubuntu + nginx + resins)-> dB servers (Aix + Oracle)-> storage 1. Install Ubuntu Install it in vitrual box 3.2.4 and the network may be discon

Linux cluster-load balancer LVS-DR implementation MySQL

The previous article on the introduction of load Balancer LVS has explained the principle of lvs-dr, this article mainly introduces its implementation process in MySQL application:Test environment: 4 virtual machines are CENTOS6 operating systems, using the system's own MySQL package installation test:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/74/

Build a MySQL Server Load balancer and high-availability environment

devices;The client accesses the virtual IP address to obtain the service;Haproxy is a server Load balancer software that forwards requests to different hosts according to policies to achieve load balancing;Can realize judgment and allocation at the network layer or application layer; Mysql enables binary logs to achie

Deploy LVs (DR) +keepalived+nginx load balancer under Linux

/arp_ignoreecho 0 >/proc/sys/net/ipv4/conf/lo/arp_announceecho 0 >/proc/sys/net/ipv4/conf/all/arp_ignoreecho 0 >/proc/sys/net/ipv4/conf/all/arp_announce;;Status# Status of Lvs-dr Real server.Islothere= '/sbin/ifconfig lo:0 | grep $VIP 'Isrothere= ' Netstat-rn | grep "lo:0" | grep $VIP 'if [! "$islothere"-O! "Isrothere"];then# either the route or the lo:0 device# not found.echo "LVS-DR Real server Stopped."Elseecho "LVS-DR Real server Running."Fi;;*)# Invalid entry.echo "$0:usage: $ {start|status

Build a highly available LVS load Balancer cluster with keepalived

I. Introduction of keepalived SoftwareKeepalived is a software based on the VRRP protocol to achieve high availability, it can solve the problem of single point of failure, through the keepalived to build a highly available LVS load Balancing cluster, keepalived can also detect the running state of the background server.Ii. Introduction to the principle of VRRP protocolVRRP (Virtual Router Redundancy protoc

An example of Haproxy Server Load balancer cluster Architecture Design

Recently, the company had a project where users worried that a single machine could not afford the most users, and they required to use the application cluster. We designed the application cluster architecture based on the application situation. The architecture diagram is as follows: 650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; margin: 0px; border-top: 0px; border-right: 0px "title =" logical architecture "border =" 0 "alt =" logical architecture "src =" http://www.bk

Nginx reverse proxy and load balancer (analog)

* Simulation (with a domain name to get different server corresponding) This domain name is simulated by modifying the local host fileModifies the IP address of the domain name specified by the host file. Host file location: C:\Windows\System32\drivers\etc* Brief introduction of reverse proxy concept: The reverse proxy server is a reference on the service side. Decide which server provides the service. * Reverse Proxyused here One virtual machine

MySQL HA load Balancer

Tags: mysqlDrbd+heartbeat + LVS + keepalived+ MySQLHardware: Master *: Install DRBD, Heartbeat,mysqlSlave*3: Installing MySQLKeep Alived Host * 2: Install LVS, keepalived (real server is slave)Application HostIP: Two master has an ha VIP1Two keepalived hosts have a LVS VIP2Write operation:Application Host (AS)->VIP1->DEV/DRBD (two master DRBD will synchronize in real time)MySQL copy operation:0) Start slave1) 3 Slave an I/O thread sends a request to VIP1, requesting master to send Binlog;2) Mast

Load Balancer Lvs_dr_tcp_http Single Dispatch

Prepare for three virtual, all CentOS6.5 x86_64Note that the port consistency is maintained during the configuration process.Director (Eth0 192.168.1.189, VIP eth0:0: 192.168.1.18) Director 78Real Server1 (eth0 192.168.1.207, VIP lo:0:192.168.1.18) Server1 78Real Server2 (eth0 192.168.1.208, VIP lo:0:192.168.1.18) Server2 781, configure the static IP, installation test httpd (two sets of realserver to do)[email protected] ~]# Yum install-y httpd[[emai

MySQL master-slave replication with lvs+keepalived single-point write read load balancer High availability experiment "go"

Tags: des blog http io os ar for strong dataFirst, the environmentMaster (Host a): 192.168.1.1Slave (Host B): 192.168.1.2W-VIP (write): 192.168.1.3R-VIP (Read): 192.168.1.4Client (test): 192.168.1.100Operating system version: CentOS release 6.4MySQL database version: 5.6.14Keepalived version: 1.2.7LVS Version: 1.26All environments are virtual machinesSecond, design ideas1. Server A and B, synchronize the data through the MySQL slave process.2. Enable

BasePath problems-nginx Server Load balancer Configuration

BasePath problems-nginx Server Load balancer Configuration After configuring nginx + tomcat, add the project to webapps. Css and js cannot access the homepage, leading to an error in homepage layout. After carefully analyzing the cause, we found that the css and js addresses were obtained by basePath. BasePath is defined as follows: String basePath = request. getScheme () + request. getServerName () + req

Detailed description of lvs dr Mode Server Load balancer configuration (configuration 1)

/arp_ignore Echo "2">/proc/sys/net/ipv4/conf/lo/arp_announce Echo "1">/proc/sys/net/ipv4/conf/all/arp_ignore Echo "2">/proc/sys/net/ipv4/conf/all/arp_announce Sysctl-p>/dev/null 2> 1 Echo "RealServer Start OK" ;; Stop) Ifconfig lo: 0 down Route del $ SNS_VIP>/dev/null 2> 1 Echo "0">/proc/sys/net/ipv4/conf/lo/arp_ignore Echo "0">/proc/sys/net/ipv4/conf/lo/arp_announce Echo "0">/proc/sys/net/ipv4/conf/all/arp_ignore Echo "0">/proc/sys/net/ipv4/conf/all/arp_announce Ec

Large architecture. NET platform (web-level load balancer)

index.php; # fastcgi_param script_filename/ Scripts$fastcgi_script_name; # include Fastcgi_params; #} # Deny access to. htaccess files, if Apache ' s document Root# concurs with Nginx ' s one##location ~//.ht {# Deny All;#}}# Another virtual host using mix of ip-, name-, and port-based configuration##server {# Listen 8000;# Listen somename:8080;# server_name somename alias Another.alias;# location/{# root HTML;# index index.html index.htm;# }#

Nginx reverse proxy, load balancer

the vhosts directory need to build two files, one is the servername list file, one is a virtual host configuration fileThe contents of two files were(1) servernameserver_name aaa.com 111.com // in this simple line, of course, this server_name can continue to add (2) virtual Host configuration fileserver {Listen 80;Include Vhosts/servername; The file here is the top servername list file .Location/{Proxy

NET Distributed System two: the CentOS system to build the Nginx load balancer (bottom)

The previous article introduced the VMWare12 virtual machine, Linux (CentOS7) system installation, deployment Nginx1.6.3 Proxy service to do load balancing. The next step is to distribute the request through Nginx to each Web application processing service.First, Web application development  1. ASP. MVC5 Development(1) Create a new MVC5 project, create a new controller, in the index method to save the curre

Analysis of Nginx Server Load balancer application cases

Analysis of Nginx Server Load balancer application cases Lab environment 11. test hardware preparationThree virtual machines, two for load balancing, and one for RS 2. test software preparationSystem: Red Hat6.4 x86_64Software: nginx-1.8.1.tar.gz3. Install the basic environment package (some systems already have it) be

Nginx entry-level introduction, including installation, basic usage, Server Load balancer, dynamic/static separation, reverse proxy, and cache applications.

This article is an entry-level introduction to nginx, including installation, basic usage, Server Load balancer, dynamic/static separation, reverse proxy, and cache applications. Dependency preparationYou can download the dependent libraries from the official website as follows:PCREHttp://www.pcre.org/ ZlibHttp://zlib.netHttp://sourceforge.net/projects/libpng/files/zlib/Zlib.net cannot be accessed... Is i

Debian + nginx + php environment for reverse proxy and server load balancer tutorial

and parameters of the backend server. The server name can be a domain name, IP address, port number, or UNIX Socket.Specify proxy_pass in VM host configurationServer {Listen 99;Location /{# If the backend server returns an error of 502 or 504 execution timeout, it will be forwarded to another service in the upstream server load balancer pool for failover.# Proxy_next_upstream http_502 http_504 error timeou

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