load balancer appliance

Docker + nginx + Tomcat 7 Simple Server Load balancer ConfigurationThis article describes how to configure Simple Server Load balancer on Docker. The host machine is Ubuntu 14.04.2 LTS, two CentOS containers, Nginx installed on the host machine, and tomcat 7 installed on the two containers. The architecture is as follo

Transparent load Balancer http forward Proxy* Master-workers architecture, HTTP positive justification for separate DNS requests and buffering processes* Use Epoll (ET) mode, adopt the full asynchronous mode (double cache, realize bidirectional forwarding at the same time);* Event management mechanism (event pool, event object separation)* Use red black tree timeout management* Flexible and simple configura

This article describes how to configure Simple Server Load balancer on Docker. The host machine is Ubuntu14.04.2LTS, two CentOS containers, Nginx for the host machine, and tomcat 7 for the two containers. The architecture is as follows: the principle of this solution is to map the host machine port and the docker container port (that is, a port accessing the host machine will be mapped to the corresponding

Since the release of this series, I have received replies from many friends! Thank you very much. At the same time, many friends have asked some questions, some of which are basic questions. Due to the time, they will not reply to them one by one. If they do not understand, I hope you will learn by yourself! Although this series is not difficult, many of the knowledge is required by default, such as the concept, principle, and Web farm of Server Load

Next, this section describes the network architecture and configuration process of the RADWARE project. Radware works in active/standby mode. The corresponding networking methods are divided into single-arm networking, dual-arm networking, and triangular transmission. I. Single-arm networkingThe following networking is called single-arm networking, which is a widely used networking method. This networking mode enables complete master-slave switchover. Generally, the gateway of the server must po

If you have experience in cluster, server load balancer, and dual-machine hot standby, you will be able to answer the question: I am using a mysql database web script written in php. If cluster, server load balancer, and dual-machine hot standby are implemented, is there an all-in-one solution? I mean, what I know now

I know what server load balancer and high concurrency should be used to solve this problem, but I don't know how to do it even though I have no experience in the concept of server load balancer and high concurrency, I searched for nginx to achieve load balancing and high con

1 overviewIn order to guarantee the stable operation of the bastion host-instruction channel, it is necessary to implement the load balance of instruction channel, and study to determine the use of LVS software.LVS is the abbreviation for Linux virtual server, that is, the Linux server, the official site is: www.linuxvirtualserver.org2 LVS ArchitectureLVS set up server cluster to achieve load balancing has

; # Fastcgi_send_timeout 300; # Fastcgi_read_timeout 300; # fastcgi_buffer_size 64k; # fastcgi_buffers 4 64k; # fastcgi_busy_buffers_size 128k; # fastcgi_temp_file_write_size 128k; # gzip on; # Gzip_min_length 1k; # gzip_buffers 4 16k; # Gzip_http_version 1.0; # gzip_comp_level 2; # gzip_types Text/plain application/x-javascript text/css application/xml; # gzip_vary on; #limit_zone crawler $binary _remote_addr 10m; Upstream tomca

/nginx/conf.d/*.conf; Upstream Ken {server 172.20.10.8 weight=1 max_fails=3 fail_timeout=5; Server 172.20.10.9 weight=2 max_fails=3 fail_timeout=5; } server {Listen default_server; Listen [::]:80 default_server; server_name _; root/var/www/html; Index index.php index.html; # Load configuration files for the default server block. # Include/etc/nginx/default.d/*.conf; Location/{Proxy_passhttp://ken/;

Recently, using Apache as a load balancer for a cluster, according to the relevant configuration, after adjusting the relevant content, the Apache httpd.conf file is adjusted. Add the following content:After adding such as content, the original normal Apache can not start!Looking at Apache's backend log error.log, we found the following:[Tue Dec 09 10:34:51 2014] [Notice] parent:received Restart Signal--res

'; 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

Nginx + Tomcat server Load balancer ConfigurationGuideNginx + tomcat is the mainstream Java Web architecture of Internet companies. nginx + tomcat can work stably at the same time. How can I use nginx to reverse proxy tomcat backend balancing? Directly install the configuration as follows:Install JAVA JDK # Download the appropriate jdk software package, and then unzip the installation, here I package name:

Solutions for LVS Server Load balancer tcp persistent connection Distribution Although the application keepalived solves the backend server Load balancer and high availability problems, you must pay attention to many problems in specific applications. Many applications use tcp or http persistent connections. Because th

Detailed configuration of Server Load balancer in lvs dr mode in CentOS 1. Prepare for LVS installation: 1. Prepare four Centos 6.2 x86_64 Note: SELinux and IPtables firewalls are disabled in this experiment. Management IP address role remarks 192.168.1.101LVS Master scheduler (Master ctor) provides external services with VIP 192.168.1.180192.168.1.114LVS slave scheduler (Backup Director) which can be used

The LVS server load balancer environment is set up, and SYN_RECV state processing is successful when the LVS + KEEPALIVED environment is set up for the first time. after a while, a problem occurs when the environment is set up again. no matter how you configure and modify parameters, the client is always unable to connect to the realserver, and can be viewed through ipvsadm-lc ,... the LVS server

1. set the bonding module vi/etc/modprobe to be loaded upon startup. d/bonding. add the following two lines to the conf file: aliasbond0bondingoptionsbond0miimon100mode0 # mode0 indicates that server load balancer 2 modifies the Nic configuration file cd/etc/sysconfig/n... 1. set the bonding module vi/etc/modprobe to be loaded upon startup. d/bonding. add the following two lines to the conf file: alias bon

Article Title: instance resolution: Lvs Server Load balancer experiment in a virtual machine. 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. Environment, three virtual machine systems, debian, centos, and rhel. SLB Based on ipvsadm adopts the DR mode. rhel is the lctor

Nginx Load Balancer monitoring node status v plug-in (ngx_http_upstream_check_module) Upstream_check_module Introduction: The module can provide Tengine with proactive backend server health checks.The module is not enabled by default before the Tengine-1.4.0 version, it can be opened when the compile option is configured:./configure--with-http_upstream_check_module Upstream_check_mo

Problem logging-load Balancer equalizer configured for high availability causes problemsProblem Description:Using PHP to develop a awards program, to call the server interface to the person to send props, but this item must be strictly controlled only sent onceThat is, the request can only be sent once, but there will always be a chance to trigger a number of cases, analysis of the background web write logs