node js load balancer

'; Upstream web_app { Server 127.0.0.1: 8080 Weight = 1 max_fails = 2 fail_timeout = 30 s; Server 127.0.0.1: 8081 Weight = 1 max_fails = 2 fail_timeout = 30 s; } #### Chinaapp.sinaapp.com Server { Listen 80; SERVER_NAME chinaapp.sinaapp.com; Index index. jsp index.html index.htm; # Release directory/data/WWW Root/data/WWW; Location/ { Proxy_next_upstream http_502 http_504 error timeout invalid_header; Proxy_set_header host $ h

index.htm; # Release directory/data/www root/data/www; location/{proxy_next_upstream http_502 http_504 error timeout invalid_header; proxy_set_header Host $ host; proxy_set_header X-Real-IP $ remote_addr; proxy_set_header X-Forwarded-For $ proxy_add_x_forwarded_for; proxy_pass http: // web_app; expires 3d ;}}}# Note * The web_app defined in the server segment proxy_pass must be consistent with the web_app defined in upstream. Otherwise, the server cannot find a balance.# In the preceding config

One of the simplest load-balancing tests, which does not involve session replication, simply assigns the request to a different server.1. Create a simple Web application. There is only one index.jsp page, the content is as follows. hello,nginx! System.out.println ("*****************nginx do load Balancing to assign requests to this server *****************");

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

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=

LVS Load Balancing cluster + NAT Mode NAT Mode 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131228/05364K554-0.jpg "title =" 9.jpg" alt = "162659736.jpg"/> I,BuildLVSServer Load balancer Cluster(Address translation modeLVS-NAT) 1. Configure the Network Environment Web1: Enable route forwarding. Configure Gateway: route add default gw gate

Haproxy Load Balancer Web650) this.width=650; "height=" 342 "src=" http://a4.qpic.cn/psb?/594581eb-e62e-4426-a878-953c87dd5729/ suj1slfp2wqz7foekuw0bjl6a*1fkp5xpwyqbju2tdi!/b/dgcbaaaaaaaaek=1kp=1pt=0bo=kgjxaqaaaaadafs! su=0225277713tm=1481871600sce=0-12-12rf=2-9 "width=" 553 "style=" margin:0px;padding:0px; border-width:0px;border-style:none;vertical-align:top; "Alt=" dgcbaaaaaaaaek=1kp=1pt=0bo= Kgjxaqaaa "

In Linux Streaming Server Load balancer, Layer7 identifies data streams (Connection Tracking ).1. the nf_conntrack that supports Layer7 does not really need to be destroyed. After that, you will feel that you need to change "data streams based on quintuple" to "data streams with fixed offsets based on application layer protocols, the sooner the better! Therefore, this person added several fields for nf_conn

Identification of Layer7 data streams (Connection Tracking) in Linux Streaming Server Load balancer 1. nf_conntrack supporting Layer7 is really unnecessary After the fire, you will feel the need to quickly change "data streams based on quintuple" to "data streams with fixed offset based on the application layer protocol". The sooner the better! Therefore, this person added several fields for nf_conn in the

DocumentRootDocumentRoot "/data/wwwroot/polyguide"About 477 lines, remove comments, enable Apache to turn on the virtual host functionInclude/etc/httpd/extra/httpd-vhosts.conf(2) Edit httpd virtual Host configuration fileVim/etc/httpd/extra/httpd-vhosts.confServerName a.pl.com #基于域名的虚拟主机DocumentRoot "/data/wwwroot/polyguide"Options Noneallowoverride NoneRequire all granted #允许所有用户访问Rewriteengine onRewriterule ^/static/(. *)/static/$1 [L]Rewriterule ^/uploadtmp/(. *)/uploadtmp/$1 [L]Rewriterule

method master server does not provide services):User www www;Worker_processes 10;PID Nginx.pid;events{Use Epoll;Worker_connections 51200;}HTTP {Include Mime.types;Default_type Application/octet-stream;Keepalive_timeout 120;Tcp_nodelay on;Upstream nginx.cn {#ip_hash;#server 192.168.1.228:80 weight=5;#server 192.168.1.224:80 weight=5;Server 192.168.1.228:80;Server 192.168.1.240:80;}server{Listen 80;server_name nginx.cn;Location/{Proxy_pass http://nginx.cn;if ($request _uri ~* ". *\. (

Use rhel5.8, mysql, keepalived, and haproxy to build a cluster with high availability and load balancing. Also, use mysql binary replication to maintain data consistency. Avoid Use rhel5.8, mysql, keepalived, and haproxy to build a cluster with high availability and load balancing. Also, use mysql binary replication to maintain data consistency. Avoid Abstract: rhel5.8, mysql, keepalived, and haproxy a

=192.168.56.110case$1instart) echo "1" >/proc/sys/net/ipv4/conf/lo/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/sbin/ifconfiglo:0 $VIP netmask 255.255.255.255broadcast $VIP up;; Stop) /sbin/ifconfiglo:0down 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

shunt, the rest of the other back end.4) Upstream_hashTo solve some of the ip_hash problems, you can use Upstream_hash, the third-party module, which is used in most cases as url_hash, but does not prevent it from being used for session sharing:If the front end is squid, he will add IP to x_forwarded_for this http_header, with Upstream_hash can use this head to do the factor, the request directed to the specified backend:This document is visible:http://www.oschina.net/discuss/thread/622In the d

Ngigx + Tomcat configure static/dynamic separation, Server Load balancer, and ngigxtomcat Since the company used Ngnix, I felt a little curious about Nginx, So I studied it. My version used in windows is nginx-1.8.1: 1. Start Ngnix Double-click nginx-1.8.1. nginx.exe in the folder. If two nginx processes exist in the task manager, the startup is successful! 2. Common Ngnix commands Forced nginx-s stop Shutd

also has a lot of articles explained very detailed, I also refer to this piece of article, written quite detailed, nginx+iis to achieve load balancingConfiguration, I am the server node added configuration server_name www.xxx.com a.xxx.com; Easy access by domain name.External network unreachable?After the configuration is complete, the server access is very normal, with IP, the domain name access is also n

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) before installation)Yum install opensslYum inst

IP address and port are repairedUpstream servers: Which nodes in the back-end of the proxy server are actually serving clients, such servers are called upstream serversDownstream server: The client is the downstream node vhttps://baobao.baidu.com/article/8e250ea7127f8a5d0b52c0881407017a.htmlHttps://baobao.baidu.com/article/8e250ea7127f8a5d0b52c0881407017a.htmlHttps://baobao.baidu.com/article/8e250ea7127f8a5d0b52c0881407017a.htmlHttps://baobao.baidu.c

, 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

1. Introduction to HAproxy HAproxy is a high-performance proxy server. It provides Lay4 and Lay7 proxies, featuring Healthcheck, Server Load balancer, and access control. It can support tens of thousands of concurrent connections with excellent performance. In addition, the HAproxy operating mode enables it to be easily and securely integrated into the current architecture, while protecting the web servers