f5 virtual load balancer

Lab Environment:redhat6.5 version Virtual machine 3 units:server1:172.25.44.10, Memory 1024m,cpu dual Coreserver2:172.25.44.20, Memory 512m,cpu single coreserver3:172.25.44.30, Memory 512m,cpu single coreThese three virtual machines iptables are off and SELinux is disabled state.the difference between Apache and Nginx :Nginx's advantages over Apache: Lightweight, also Web services, Nginx consumes less memor

variety of load balancing policies, can achieve SQL statement-level load balancing; The automatic fault monitoring, virtual IP and failover technology are integrated to meet the requirements of high-availability system construction. When data is replicated, synchronous and asynchronous replication modes are used to realize real-time synchronization of data betwe

(192.168.60.200:80) (Weight set to 1)LDIRECTORD|2563] Deleted fallback server:127.0.0.1:80 (192.168.60.200:80)LDIRECTORD|2563] Added Real server:192.168.60.144:80 (192.168.60.200:80) (Weight set to 1)As can be seen from the log, Ldirectord first loaded a virtual IP 80 port, then loaded two real server node 80 port and the Director server Native 80 port, while the real server two node weight is set to 1, Since two nodes are available, the 80 port of t

fastcgi_params; #}# deny access. 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; #}#}# HTTPS server # server {# listen 443 ssl; # server_name localhost; # ssl_certificate

=" float: none; "title=" Tomsamlee1.png "alt=" Wkiom1f3coztf69naac-raenpug512.png "/>650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/88/6C/wKioL1f3cO_jPD00AADBjw-xilA024.png "style=" float: none; "title=" Tomsamlee2.png "alt=" Wkiol1f3co_jpd00aadbjw-xila024.png "/>Configure HTTPD to implement load balancing reverse proxy tomcatThe configuration file looks like this:# vim/etc/httpd/conf.d/proxy.confRestart the HTTPD service access test as fo

the proxy function of the Apache load balancer mod_proxy moduleThis is just the first time in the experimental environment to achieve Apache Agent, the implementation of the process is relatively simple, I am on a virtual machine (IP:192.168.1.116) using yum installed httpd,php and Tomcat,apache-tomcat-7.0.56. First step:yum installs httpd,php. After installation

Objective　　First to the big guys for a year, I wish you all: the New Year health Kang, safe!　　　　The formation of this article refers to a lot of people's blogs, the most should be the green years of the brother of this blog, we can first go to see, familiar with some content, because this article is direct practice, some theoretical knowledge needs to be supplemented by their own.This article is in my previous environment LVS + keepalived + Nginx + Tomcat to achieve master-slave hot standby +

1. Introduction to Linux virtual serversLinux virtual server (LVS) is a high-availability server Load balancer cluster system. The system can provide Load Capacity proportional to the number and performance of server nodes, effectively improving service throughput, reliabili

One, reverse proxyDescription: There should be an Nginx server with multiple application servers (which can be Tomcat), this article uses a virtual machine, installs an nginx, multiple tomcat, to simulateUpstream Tomcats{server 192.168.25.148:8080;server 192.168.25.148:8081;} server { listen ; server_name tomcat.taotao.com; #charset Koi8-r; #access_log logs/host.access.log main; Location/{ proxy_p

Tags: nginx mysql tomcat load balancer amoeba read/write separationNginx Load Balancer +mysql master-slave copy, read/write Separation +tomcat ProjectArchitecture: (only two virtual machines due to limited resources)1 192.168.137.3 Nginx, Mysql (master), TOMCAT1, TOMCAT22 19

Build LVS Load Balancer Pre-set on Linux,centos7 Prepare five virtual machines Four sets of Centos7 One to do scheduling one to do NFS cache Two do Wed clusters One windows7 begins to be configured individually Configure Server for NFS (CENTOS7 is used to download the source code package online, but in order to do the experimen

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/

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

From: http://blog.s135.com/post/307/ DNS round robinDNS round robin refers to interpreting the same domain name to different IP addresses and randomly using a host technology. However, it has obvious disadvantages: Once a server fails, even if the DNS settings are modified in time, it still takes enough time (refresh time) to take effect. During this period, the client computer that saves the address of the faulty server cannot access the server normally. DNS

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

: 9003 loadfactor = 1 route = jvm4 The above four BalancerMember members are the tomcat cluster we configured. It will be explained later. 1.2. httpd-vhosts.conf settings are followed by virtual host settings. APACHE's VM settings are as follows: first modify conf/httpd. conf to find (# Include conf/extra/httpd-vhosts.conf) and remove the comments. # Virtual hostsInclude conf/extra/httpd-vhosts.conf add at

First, about the CentOS system introductionCentOS (Community Enterprise Operating System, Chinese means: Community Enterprise operating system) is one of the Linux distributions, it comes from Red Hat enterprise Linux is compiled according to the source code released by the open source rules. Based on Red Hat's continuous upgrade, and fixes for known bugs, CentOS is more used to build large enterprise-class servers. At present the newer version is 7.0, this article uses the CentOS7 64bit to buil

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

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

, which is the VIP address above, is shared by the director server and all real servers,If there is an ARP request VIP address, the Director server responds with all real servers, and the problem occurs.Therefore, the real server needs to be prevented from responding to ARP requests.Third, configure the Tomcat service on the real server, slightly. To build an HTML file in 192.18.8.5, the contents are:This is the test pageFrom server 192.168.8.5To build an HTML file in 192.18.8.6, the contents ar