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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IIS 6 on Windows 2003 to IIS 8 on Windows 2012 migration RSS

We are migrating applications on Windows 2003 IIS 6 Webfarm to IIS 8 on Windows 2012 as W2K3 has reached EOS. We have a single website under which there are 40 applications on a intranet web farm (4 ...
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21 views

How to run a Parse Live Query Server (Web Sockets) behind an AWS Load Balancer?

ParseLiveQuery depends on Websockets. More generically this question could be about getting web sockets to work behind an AWS ELB. I'm using the new Parse Server configured in AWS using Elastic ...
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10 views

Can we implement Least Connection algorithms simulation using NS-2? [closed]

I am searching for this algorithm to make a simulation on ns2 but on my friend google has not to much information.
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22 views

Use haproxy to redirect *.domain1.com/* to *.domain2.com/*

I am struggling with some HAproxy rules for a while with no luck unfortunately. Let's say I have domain1.com and domain2.com. I want to redirect everything from domain1.com to domain2.com, including ...
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Is there any latest release or other option to use LVS load balancing? [duplicate]

i checked the official linux virtual server website and they havent updated or discontinued since 2014.So, i cant find documentations for 4.5.X kernels. Is squid or HA proxy better alternative to LVS ...
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Why does benchmarking from a different virtualbox give 1/4 of req/s compared to from localhost?

I am trying to make sense of benchmarking results and how I should loadbalance in a way that makes sense performance wise but the more I try the more I am frustrated. I have set up two Go/Golang ...
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14 views

Disable load balancing fortigate 100D

I have wan1 with static ip, wan2 ppoe Port 1 with address 192.168.1.0/24 Port 2 with address 10.0.0.0/24 I just want port 1 go through wan1 and port 2 go through wan 2. No load balancing Every time I ...
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DNS - Load Balancer - SINGLE Apache Server - Tomcat

This is my configuration, I have bought a domain in godaddy.com. Linked my Load Balancer[in Rackspace] IP in domain setting. Behind the Load Balancer, there is one active server which responds all ...
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22 views

Initial Elastic Load Balancer connections hang

I have an elastic load balancer running in front of a Go-based docker service that is on two machines. Every time I restart the Go service, the initial connections from some clients take minutes ...
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1answer
27 views

Is it possible to do direct server return DSR load balancing using virtual servers in the cloud?

Is it possible to do this kind of load balancing in the cloud say for example in Digital Ocean if all of my droplets are from the same data center? Or do I need some sort of physical device to do this ...
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1answer
38 views

Load balancer displays Error 404 page

I got the following configuration: upstream backend { server xx.azurewebsites.net; server xxx.azurewebsites.net; } server { listen 80 default_server; listen [::]:80 default_server; root ...
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1answer
23 views

How can I TCP (layer 4) load balance with haproxy and still do roundrobin or leastconn balancing?

I am trying to load balance with haproxy on VirtualBox just to see that things work as they should before I go on to set it up on Digital Ocean. I am able to decide how to balance requests when I ...
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How to maximize utilization of fluentd server?

I have a fluentd server that is processing an average of 1000 req/s. This server is composed by 32 cpus. In this server are running 32 fluentd docker containers with the same configuration. The entry ...
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1answer
36 views

SAVE IP ROUTE RULES AFTER REBOOT

I have two internet connections from two different ISPs and I need to balance & failover the traffic originating to and from my network between the two ISPs. My settings: FIRST ISP (eth0): ...
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11 views

Can I use twemproxy for load balancing by redis queue size?

Can I use twemproxy as a load balancer for a pool of redis instances, according to size of redis queue (amount of keys per instance)? Is twemproxy able to turn off from the upstream one of the redis ...
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1answer
38 views

Access local website without dns?

I got an nginx loadbalancer setup with 2 sites. The ip address of the loadbalancer is 192.168.123.10 I want to locally access the two sites to check if everything is working. But I'm a little puzzled ...
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1answer
25 views

Joining two layer-3 interfaces for failover

I have a Linux machine with two USB modems each with its own SIM card and public IP address. One of the modems may lose connectivity at some point and I want the connections to be as resilient as ...
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33 views

Load Balancing System For 2 Servers on Different Datacenters [closed]

I am using Ubuntu 15 and I need to implement simple/effective Load Balancer / Fail Over System as per the below requirements: It should balance the load between two different public IPs (two ...
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1answer
15 views

Putting ELB in from of my ECS Cluster / Service

I’m trying to put an ELB in from of my ECS service, using this terraform file But applying it, gives the below error. Any ideas on the setup that I’ve gotten wrong? $ terraform apply ... ...
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1answer
22 views

Windows Server 2012 WSFC and NLB together

I am looking to run a combination of WSFC and NLB in my service stack. I have a stateless service that I want to load-balance with NLB, and several "singleton" services that need to be run with ...
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12 views

Redis & HAProxy - updated configuration settings?

Have gotten 2 Redis instances installed, with one being a master. That is working remarkably well and with no headaches. I'm now trying to get my HAProxy/keepalived nodes to handle some sort of ...
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15 views

Why do I see external requests in my Apache server status?

I enabled Apache server status, so I see all URL requests at mysite.com/stats. I created a separate sub-domain hosted on another server, it is like: download.mysite.com And from main site, I link to ...
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1answer
17 views

AWS autoscaling triggers

I am going to move a very big wordpress website (in terms of DB) to AWS. And I would like to understand the autoscaling triggers in order to find the best balance between costs and performance. Are ...
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26 views

TCP Balancer active/standby active/passive

I have two Servers, Server A,ServerB. running as TCP socket server. I want to a active/standby or /active/passive failover. that means: 1:Server A and Server B Running, route ALL connection to ...
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Forbid reviving dead peers in Squid

How, I'm using Squid v3.3.8 and I need to create HTTP rotating proxy server to send all requests through set of predefined proxies (I'm automatically updating squid config to update set of working ...
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Docker UCP setting up loadbalancer problems :(

I'm having trouble configuring the proxy on my test docker UCP setup. I've got a 3 node test setup and only a single controller (so no HA) I downloaded the UCP client bundle inside my controller node ...
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Unable to find high RAM utilization on Linux server [duplicate]

I am having high RAM utilization issue with a dedicated Linux server used for shared hosting purpose. I am sharing the outputs of some commands which will make the issue more clear. root@live ...
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1answer
41 views

Squid cache_peer round-robin algorithm not working as expected

I have number of peer-to-peer HTTP proxies and I need to distribute my requests among them evenly, so I added multiple cache_peer directives and set round-robin as peer selection algorithm. This is my ...
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1answer
25 views

One domain, multiple apps, multiple load balancers on AWS?

The current setup looks like On a single EC2 instance, foo.web http/https traffic is handled by nginx, and routed based on: foo.web/bar/* requests are handled by app #2 all other foo.web requests ...
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1answer
19 views

Making HAProxy Pass a Host Name in HTTPCHECK

I am trying to perform HTTP Checks in HAProxy with a specific host name. Here is a snippet from my backend configuration: option httpchk HEAD / HTTP/1.1\r\nHost: example.com http-check expect ...
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1answer
16 views

Automatic CPU load balancing for program or program group under Linux?

assume the following setup: system (Ubuntu 14.04 LTS) with 40 cores, lots of RAM. Additionally a program which is only partly multithreaded. That is, it constantly switches between running on multiple ...
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Azure two VM's in cloud load balance service, but can only see one set of end-points

I have created two VM's in Azure and each sharing three LoadBalance EndPoints but in the Cloud Service I only see ONE set of end-points. Rechecked all the config but not sure why both VM endpoints ...
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34 views

Nginx upstream returns «site unavailable», while they work

I use upstream and proxy for load balancing. [root@192.168.1.135 ~]# cat /etc/nginx/nginx.conf user nginx; worker_processes auto; error_log /var/log/nginx/error.log; pid /run/nginx.pid; events { ...
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1answer
10 views

How to load balance streaming connection on the client side

I'm not entirely sure whether this is even possible, but I thought I'd ask all the same. So we have a service that connects to a streaming API which keeps a connection open and we receive JSON ...
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40 views

Increase RAM usage for IIS server

I am running a large scale ERP system on the following server configuration. The application is developed using AngularJS and ASP.NET 4.5 Dell PowerEdge R730 (Quad Core 2.7 Ghz, 32 GB RAM, 5 x 500 GB ...
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1answer
31 views

Server got blank with error: -bash: fork: Cannot allocate memory [closed]

My Vps is not executing any command. Server load is high and memeory usage is 100% due to which this error occured -bash: fork: Cannot allocate memory. I just want to what is this process PHP and ...
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1answer
51 views

How can a system hold more then 65535 concurrent TCP connections?

As far as I know, a TCP/IP stack can only maintain an absolute maximum of 65535 concurrent connections; while reading the white-paper for some F5 BigIP load balancers, I see that these can hold open ...
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1answer
46 views

Is there a performance impact to using Round Robin DNS with many offline endpoints?

I'm currently running a MeteorJS application on Amazon. MeteorJS has a plugin that allows each server to act as a load balancer or a worker for said load balancers. I can spin up any number of workers ...
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1answer
34 views

UDP Server behind Gcloud load balancer: receive ok, reply fails

I have a UDP server set up (on a VM) behind the Google Cloud network load balancer. The server is bound to 0.0.0.0. The UDP server can receive messages that were sent to the balancer, but replies do ...
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1answer
18 views

Load Balance Azure VM Classic and new Azure VM

Can you load balance the classic virtual machine and the new Azure virtual machines in the resource manager concept?
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Mapping multiple URLs via Google Cloud HTTP Load Balancer to Docker containers on CoreOS

Seeing as CoreOS is designed to run docker containers, I was wondering if there's a way to map Backend Services on a HTTP Load Balancer directly to Docker Images running on a single CoreOS instance. ...
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How to define multiple domains in ldirectord.cf?

I'm using ldirectord as a loadbalancer. I defined a virtual host for an IP but I want to define another virtual host for the same IP. My conf file content is: virtual = loadbalance_ip:80 ...
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1answer
47 views

nginx proxy_pass is being ignored

I have an Nginx server which works as a proxy server. I also have 3 different NodeJS Express servers running on ports 8080, 9090 and 8888 (all working correctly). Servers 8080 and 9090 execute the ...
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1answer
59 views

Load Balancer and Proxy for Meteor not passing to 127.0.0.1 - Too Many Redirects?

I have the following setup, but see 302 Moved Temporarily when I curl the load balancer. In a browser it reports Too Many Redirects: 1 load balancer with SSL 2 web servers I request ...
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35 views

Configure Apache DirectorySlash to honor X-Forwarded-Host set by load balancer

Is there a way to configure the DirectorySlash behavior of Apache to honor the X-Forwarded-Host header set by a load balancer? For example, assume my load balancer host is example.com but it forwards ...
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Load balancing based on header value

I have apache2 load balancing working perfectly based on session affinity. Traffic does get directed properly to appropriate tomcat server. We are trying to use same servers to serve some REST API ...
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29 views

PgPool2 alternative for load balancing in Postgresql cluster

I'm using PgBouncer for connection pooling, native psql replication in master-slave mode and PgPool2 for load balancing. After a few (many) attempts to get PgPool2 playing nice I give up. To many ...
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1answer
56 views

Procedure for GoDaddy and AWS Route53

My boss host a domain e.g. example.com in GoDaddy. (I do not have access to GoDaddy this case) In AWS, I want to setup a load-balancer (ELB) and point to 2 EC2 servers. Unfortunately, I can't setup ...
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2answers
35 views

Using a load balancer in front of many sites

Is there any reason not to use a software load balancer / proxy in front of many small websites for admin purposes. I work for a web design agency where we have maybe 30-40 small to medium websites ...
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1answer
32 views

Haproxy rules(set-header) not working and it's not changing base url of request

I am trying to integrate cloud foundry adminui application. Url which I access is https://myexample.com/adminui/ It works as follows: Request https://myexample.com/adminui/ Response ...