aws network load balancer

Introduction to load Balancing clusters Main open source software LVs, keepalived, Haproxy, Nginx, etc. The LVS belong to 4 layer (network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be considered as 4 layer, can also be used as 7 layer The Keepalived load balancing function is actually the LVS LVS This 4-tier

;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, but t

support: YesUse VRRP Framework: YesUse LinkWatch: NoUse Debug flags: NoMakeMake install Mkdir/etc/keepalivedLn-s/usr/local/keepalived/etc/rc. d/init. d/keepalived/etc/init. d/Ln-s/usr/local/keepalived/etc/keepalived. conf/etc/keepalived/Ln-s/usr/local/keepalived/etc/sysconfig/Ln-s/usr/local/keepalived/bin/*/bin/Ln-s/usr/local/keepalived/sbin/*/sbin/ Vi/etc/rc. localModprobe ip_vs Vi/etc/keepalived. conf ! Configuration File for keepalivedGlobal_defs {Notification_email {Root@example.com # email

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

In "high concurrency, massive data, distributed, nosql, cloud computing ...... I believe many of my friends have heard of and even often talked about "clusters and Server Load balancer". But not all of them have the opportunity to really come into use these technologies, not everyone really understands these technical terms. The following is a brief explanation. Cluster) A cluster is a loosely coupled mult

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

bindings on the RS side, do not set 0 even if the VIP bindings are stoppedif [${#VIP [@]}-le 1];thenecho "0" >/proc/sys/net/ipv4/config/lo/arp_ignoreecho "0" >/proc/sys/net/ipv4/config/lo/arp_announceecho "0" >/proc/sys/net/ipv4/config/all/arp_ignoreecho "0" >/proc/sys/net/ipv4/config/all/arp_announceFi Inspection of the service provided by the RS node itself Auxiliary exclusion Tool Tcpdump Ping Load balancing and reverse proxy clusters

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

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 primary server, and the real server IP will not be ping can be obtained, add a certain security.Third, the IP in the upstream is not necessarily the intranet, the external

HAProxy for Server Load balancer HAProxy provides high availability, Server Load balancer, and TCP and HTTP application-based proxy. It supports Virtual Hosts and is a free, fast, and reliable solution. HAProxy is especially suitable for websites with extremely high loads, which usually require session persistence or l

I. LVS principles 1. The full name of LVS is Linux Virtual Server, that is, Linux Virtual Server. It is an open-source project of Dr. Zhang Wenyu from our country. In linux memory 2.6, it has become a part of the kernel. in earlier versions, the kernel needs to be re-compiled ., LVS is mainly used for multi-server load balancing. It works at the network layer to implement high-performance and high-availabil