f5 network load balancer

Article Title: about dual-connection server load balancer. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Save everyone's time. First, let's talk about the theme: 　　 Packet-level TCP/UDP load balancing and NAT (

server can be added here IP192.168.5.149 or 127.0.0.1 can both represent access to themselves.Restart Nginx, and then visit a.com to see if it will be assigned to the primary server.The primary server is also able to join the service normally.At lastOne, load balancing is not nginx unique, famous dingding Apache also have, but performance may not be as nginx.Second, more than one server to provide services, but the domain name only resolves to the pr

:80;Server 127.0.0.1:8080;}Since the main server can be added here IP192.168.5.149 or 127.0.0.1 can both represent access to themselves.Restart Nginx, and then visit a.com to see if it will be assigned to the primary server.The primary server is also able to join the service normally.At lastOne, load balancing is not nginx unique, famous dingding Apache also have, but performance may not be as nginx.Second, more than one server to provide services, bu

192.168.16.16; # Charset koi8-r;Charset UTF-8;# Set access logs for the current virtual hostAccess_log logs/host. access. log main;# If you access/img/*,/js/*,/css/* resources, you can directly obtain the local document without passing squid# If there are many documents, this method is not recommended because the squid cache has better results.# Location ~ ^/(Img | js | css )/{# Root/data3/Html;# Expires 24 h;#}# Enable Server Load

ngx_posted_accept_events queue can be processed first. After processing, the ngx_accept_mutex lock will be released, and then the time in the ngx_posted_events, this greatly reduces the time occupied by the ngx_accept_mutex lock. Server Load balancer When establishing a connection, when multiple sub-processes compete for a new connection time, only one worker sub-process will eventually connect the resume,

html; index index.html index.htm; proxy_pass http://nginxDemo; #配置方向代理地址 }Such as:3. Start Nginx and Tomcat to accessI am a Windows system, so just double-click Nginx.exe in the nginx-1.10.1 directory.can be viewed in Task ManagerFinally enter the address in the browser: http://localhost:8080/nginxDemo/index.jsp, each visit will take turns to access Tomcat (if F5 refresh is not used, it is recommended to try to put the mouse point

requestsDoRouting.First, assume that each request is processed by a computer on the server. If the external request load is evenly distributed to each computer node, the server load balancer will be successful.Without considering the backend technology of distributed databases, the core of server load

code:Upstream A.com {Server 192.168.5.126:80;Server 192.168.5.27:80;Server 127.0.0.1:8080;}Since the main server can be added here IP192.168.5.149 or 127.0.0.1 can both represent access to themselves.Restart Nginx, and then visit a.com to see if it will be assigned to the primary server.The primary server is also able to join the service normally.At lastOne, load balancing is not nginx unique, famous dingding Apache also have, but performance may not

I used nginx to implement the website load balancing test. In windows, IIS performs load measurement. If your website traffic (pv) is getting higher and higher, and one server is no longer able to withstand the traffic pressure, increase the number of WEB servers for load. Website load can be achieved by buying hardw

: % M: % S % Y]"# JkMount/*. * controller7./Etc/httpd/conf/Create and configure the workers. properties fileWorker. list = controller, statusWorker. tomcat129.port = 8009Worker. tomcat129.host = 192.168.152.129Worker. tomcat129.type = ajp13Worker. tomcat129.lbfactor = 1Worker. tomcat130.port = 8009Worker. tomcat130.host = 192.168.152.130Worker. tomcat130.type = ajp13Worker. tomcat130.lbfactor = 1Worker. controller. type = lbWorker. controller. balance_workers = tomcat129, tomcat130Worker. c

LVS is the abbreviation for Linux virtual server, which is the Linux virtualization server. Now LVS is already part of the Linux standard kernel, Prior to the Linux2.4 kernel, the LVS had to be recompiled to support the LVS function module, but since the Linux2.4 kernel, the various functions of LVS have been built-in, without any patching of the kernel, and the functions provided by LVS can be used directly.LVS since 1998, has developed into a more mature technology project now. LVS technology

Lvs-nat model: Similar to Dnat, but supports multi-target forwarding, which is multi-objective DnatIt is forwarded by modifying the destination address of the request message to a certain RS rip selected by the scheduling algorithm.Architectural Features:(1) RS should use a private address, that is, RIP should be a private address, each RS gateway must point to the dip(2) The request message and the response message are forwarded through the Director; in high-

Considering the shortcomings of LVS and Nginx (because LVS uses synchronous request forwarding policy and Nginx is the asynchronous forwarding policy, combined with the disadvantage of both: as the Load Balancer server nginx and LVS processing the same request, all requests and response traffic will go through the Nginx server, However, when using LVS, only request traffic through the LVS

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/M02/74/4E/wKioL1YY3QbTEdf8AAFbNDovCbk650.jpg "title=

This article tries to explain the operation steps and simple configuration of using keepalived + Nginx + Tomcat to build a high-availability load balancing environment in Ubuntu Server environment, which does not involve performance tuning. Let's talk about their respective roles: tomcat– Application Server nginx– reverse proxy server, as a load balancer