Load balancing deal with the techniques involved on using multiple systems to deal with high demands, balancing the load between those multiple systems. Questions deal with networking and server load balancing, using dedicated hardware or not.

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1answer
945 views

HAProxy stops accepting connections

I've been using HAProxy to loadbalance my appservers for many months without problems. Recently some traffic spikes have lead me to setting the maxconn parameter to rate-limit connections to my ...
3
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2answers
68 views

Windows Server 2008 R2 Network Load Balancing no balance

I set up a NLB cluster given two servers (WS 2008 R2). Each server has one NIC card which I set up for a static ip address. I assigned the cluster an internet name (MyCluster), and assigned it a ...
1
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1answer
30 views

Nginx drops connections

I'm having a setup where I use the linode nodebalancer (loadbalancer) for my nginx/php5-fpm servers. This balancer passive checks. These passive checks, check the status code of requests. If there are ...
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0answers
29 views

Optimzing Web Server [on hold]

I'm trying to increase connection speed and at the same time reduce server load for my web application. I'm looking at setting up something similar to a CDN (Content Delivery Network) but that's able ...
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0answers
20 views

load balance without default route

I am trying to set up load balancing using static routes configured in the /etc/network/interfaces file which is as follows: auto eth0 iface eth0 inet static address 192.168.1.2 netmask 255.255.255.0 ...
0
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1answer
46 views

NGINX+Windows how to serve a static html file (100kb) to 10k concurrent users [on hold]

This is the NGINX config file: gzip on; gzip_disable "MSIE [1-6]\."; gzip_vary on; gzip_proxied any; ...
3
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1answer
1k views

HAProxy: Display a “BADREQ” | BADREQ's by the thousands

My HAProxy Configuration. #HA-Proxy version 1.3.22 2009/10/14 Copyright 2000-2009 Willy Tarreau <w@1wt.eu> global maxconn 10000 spread-checks 50 user haproxy group haproxy ...
0
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1answer
16 views

Caching (memcache/redis) and multiple servers - best strategy

We're considering best strategy for using cache (memcache or redis based) in our application (Symfony2). It will be deployed on multiple (so far 3) separate machines with load balancing and separate ...
0
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0answers
26 views

HAProxy configuration for RabbitMQ

I have an API that sends messages to RabbitMQ. I have a high availability RabbitMQ cluster behind HAProxy. When I load test my API I start seeing lots of this: Recovering from a network failure... ...
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2answers
600 views

Reverse Proxy Server Cloud Architecture (AWS + nginx)

Currently I cache responses using nginx + fastcgi. I'm in the process of moving my app to AWS. I'm architecting a horizontally scaled approach, but trying to determine where best to put nginx + ...
-1
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0answers
34 views

What specifications or protocols should I look for in a router to achieve WAN as well as LAN load balancing? [closed]

My requirement for a router is that it should: Have 2 nos of gigabit WAN ports. Have 4 nos of gigabit LAN ports. Be able to configure load balancing and fail over for both WAN as well as LAN. I ...
1
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0answers
11 views

haproxy - use acl in backend / shrink my config

in my scenario i must switch servers based on an containing url string &mode=edit or &mode=create between my servers to balance the load. my config is created via script from about 100 ...
1
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2answers
23 views

Cannot access my GitHub Pages website by IP Address

My custom domain works with GitHub Pages but I would like to understand how it actually works. For this example I am not using my custom domain at all. My GitHub Pages repository does not ...
2
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3answers
682 views

ARR servers in the Load Balancing pool automatically go from unavailable to available

I have 3 IIS web servers in an ARR web farm. When we do rolling releases, we take one server offline as a backup server and move it into an "Unavailable State" I have noticed that with ARR, servers ...
2
votes
2answers
19 views

Get hostname from url using Trafficscript

I'm looking to get the hostname from a URL as it comes through Zeus and I've looked through the documentation on Trafficscript and it seems like the only option is regex. Doe Trafficscript have a ...
0
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2answers
244 views

HAProxy Url pattern forwarding

I am using HAProxy for load balancing a couple of web servers (HTTP mode). The web servers are strictly dynamic, ie, there isnt any static content, only web services. The URLs of the type (analogous) ...
0
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1answer
47 views

How to configure HAProxy to route by port without using multiple frontend or listeners

I am trying to configure Haproxy v1.5 for Jabber connections which run on several ports on the same IP. To keep the configuration as simple as possible, I would like to use a single frontend and one ...
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0answers
14 views

Keep doing TCP Retransmission with ACK, PSH

here is my situation: I got two servers, a loadbalancer (prowered by softlayer) and a web server running apache 2.2 and php 5.4. My web application only serve android mobile device. I was tested 2 set ...
1
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1answer
1k views

301 redirect Rule For Load Balance F5 BigIp

I have a load balancer F5 Big ip for my website. Currently, I am having 302 redirect in place; however, I wanted to apply 301 but dont know how. For example: My website (abc.com) when typed 302 ...
1
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2answers
2k views

Pfsense: Inbound Load Balancing https with sticky connection

first of all I'm very sorry for my English... This is my scenario: Internet Firewall+LB: pfsense_1(Active) + pfsense_2(Passive) in CARP Pool servers: 3 x nginx(PHP5+HTTP+HTTPS) Pfsense 1 and 2 ...
0
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1answer
2k views

Simple setup for load-balanced and fail-over tomcat?

Being new to Tomcat infrastructure, I am wondering what an advisable setup would be to have two physical machines each running a tomcat instance to be load-balanced and capable of failover to each ...
1
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1answer
23 views

HAProxy returns error if server goes down before health check has occured

Let's say I have web01 in my list of backend servers, and web01 goes down. It will take a few seconds for HAProxy to notice the server is down (depending on the health check interval and how long the ...
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0answers
25 views

firewall and load balancer vmware on one physicall server [duplicate]

I have 2 unit server series Rainer SV311C4-2.4 SATA 35 NR, processor Intel Xeon X3430 Quad Core 2.4Ghz 8Mb L3 Cache memory 8GB. Each unit I will install two virtual mechine for firewall and load ...
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0answers
14 views

best logic to Load balancing YiiFramework web app

I'm going to launch a Yii framework app next days, and i'm currently searching the best way to deploy it in order to scale and support high traffic. I use Amazon RDS to host the DB, and 2 Memcached ...
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0answers
21 views

ELB Health Checks incorrectly failing / being unhealthy

Over the weekend, our instances have started being marked as unhealthy, and not being enabled within the load balancer. When going to the public DNS of the instance, followed by the healthcheck.html ...
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3answers
50 views

Get AWS ELB name from an attached instance

I created one ELB and attached a few instances to this ELB. So when I login into one of these attached instance, I would like to type a command or run a nodejs script that can return me the its ELB ...
1
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1answer
25 views

Load Balancer and using multiple SSL certificates

Here is our current production configuration at a 3rd party data center: •2 LINUX/CentOS tomcat web servers behind a shared load balancer •DNS entries point to the load balancer •Web apps are ...
2
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0answers
129 views

Varnish 3.0.5 round robin director not balancing

I have an architecture with two varnish servers sitting in front of 5 webheads. Each varnish server is configured with a round robin backend director, but at times of moderate to high load varnish ...
2
votes
3answers
594 views

Is a load balancer used once per new client or all the time?

I have 2 servers (S1, S2) at IP's1.1.1.1 and 1.1.1.2, and I would like to load balance traffic on www.example.com to them. I am thinking of having a machine at 1.1.1.3 that would be the load balancer ...
1
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3answers
1k views

Ubuntu Pound Reverse Proxy Load Balancing Based off active server load?

I have Pound installed on a loadbalancer. It seems to work okay, except that it randomly assigns the backend server to forward the request to. I've put 1 backend machine under so much load that it ...
0
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2answers
1k views

Apache load balancer with https real servers and client certificates

Our network requirements state that ALL network traffic must be encrypted. The network configuration looks like this: ------------ ...
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2answers
698 views

Unexpected behaviour when dynamically add node in HAproxy server

I wanted to use HAProxy for my web app for load balancing purpose. I am trying to add a new rabbitmq node dynamically in HAProxy server using command : haproxy -p /var/run/haproxy.pid -sf $(cat ...
0
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1answer
41 views

Scaling Multiple SSL Domains on Multiple EC2 instances in AWS ELB

I'm setting up server that will host multiple SSL domains across a wide range of load balanced EC2 instances and being a programmer who really sucks at network/infrastructure stuff I had some ...
6
votes
3answers
14k views

Load balancing & NAT-ing multiple ISP connections on Linux

I have two internet connections from two different ISPs and I need to balance the traffic originating to and from my network between the two ISPs. I am using Debian GNU/Linux. My set-up is like this ...
1
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3answers
67 views

Load Balancing - PHP/Mysql [closed]

I have a server which relies heavily on a MYSQL database. Recently, there have been load issues and max mysql connection issues. My idea is to have a primary server with the php code and files and a ...
0
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0answers
20 views

Redundant load balancing using Apache

I have a cluster of 5 application servers with a single Apache HTTP server sitting in front of them acting as a load balancer (using mod_proxy_ajp). This works well, but the problem is that the load ...
2
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2answers
122 views

How to find out whether Linode NodeBalancer takes nodes out of rotation

Sometimes my NodeBalancer takes a node out of rotation and I would like to find out about it so I can reboot it. How do I do this? This is the background: I have two websites of the same type, which ...
1
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2answers
55 views

How can I synchronize 2 web server files with load balance?

I need to setup a website with load balance to accommodate more visitors, I've seen on forums that varnish(balance)->apache(web1&2)->mysql(dbserver) is the way to go. I know how to setup ...
0
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1answer
24 views

Apache mod_wl encoding issue for URI part

I'm using Apache2 in combination with mod_wl_20.so to loadbalance to 2 weblogic instances. Apache is listening on 7070. This plugin is partialy removing the encoding of my URI of some searches which ...
3
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3answers
1k views

Need help troubleshooting intermittant TCP timeout in HAProxy

I have an application where the client connects to a server via a simple TCP based protocol over TLS/SSL. In development, this has worked great for many months while we were building our application ...
0
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3answers
74 views

Software load balancer for Windows

I'm looking for a simple load balancing solution for Windows. I have two machines (say host0 and host1), any of them is hosting TCP service (so it can be either host0 or host1, but never host0 and ...
1
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1answer
68 views

Any problems with having an active/active HAProxy setup with Keepalived

Apologies if this has been asked before, but I can't seem to find much on it. We're going to be using HAProxy to load balance our MariaDB Galera Cluster. All the articles/tutorials I have seen on ...
3
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3answers
695 views

Best Solution for Load Balancing geographically distributed NFS File Access?

I'm trying to find an optimum solution for accessing the NFS file share in my company. We have a central file server in North America and has 30GB~50GB of updated data everyday. And it's very slow for ...
2
votes
1answer
50 views

Load balancing SDSL + ADSL with Zyxel USG-100

I have a Zyxel gateway/firewall, and two Internet connections : SDSL (4MB up, 4MB down) and ADSL (15MB down, 1MB up). I'm trying to configure my Zyxel to use the two connections, and to use the SDSL ...
1
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1answer
107 views

How to create basic load balancer?

guys. I'd like to deploy my app on two different servers, located in US and Germany. As I suppose, I need to set up some kind of load balancer, that would deternime from which country my user is, and ...
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0answers
16 views

“API” to halt server with HAProxy (by loadbalancer.org) [duplicate]

I have a HAProxy load balancer by loadbalancer.org. I have 3 servers in the cluster and have to halt a server once in a while, for example when I release new code on the server. I would like to be ...
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0answers
24 views

TCP load balance authentication

Impala is a piece of Cloudera software which implements an ODBC driver on a desktop, which then connects directly to a Hadoop cluster. In our implementation, our Hadoop cluster sits behind a DMZ, in ...
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0answers
16 views

File access randomly breaks returning 500.19 erros on IIS

We have two web servers running IIS 8.5 on Windows Server 2012 R2. The two servers are located behind a load balancer. The web servers are running a ASP.NET MVC application which, among other ...
1
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1answer
69 views

Is this load balancing / horizontal scaling scheme naive?

I offer my solution to the following problem, and ask you networking and server admin professionals to validate it or poke holes in it. I am interested in any obvious attack vectors or scalability ...
1
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1answer
33 views

How to prevent load balancer from failing?

sorry if the question is a bit ambiguous but it is the first time for me to set up a load balancer and I am a little worried. I want to create a Glassfish Cluster, at the moment I am following this ...