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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2answers
94 views

best way to load balance dual esxi

Im hosting a few websites on a single ESXi box that runs Windows Server 2008 R2 with IIS 7. Now I would like to make sure that if the host goes down, the websites will still be live, so I've ordered a ...
0
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2answers
48 views

Server sends back its own IP instead of the Proxy's IP

I'm currently trying to add a new dedicated application server. I have a Load Balancer, that dispatch the traffic : LB -- apache2.conf <Location /> ProxyPass balancer://my-cluster/ ...
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2answers
2k views

One single balancer-manager page for multiple virtual hosts

We're using currently an Apache 2.4 as load-balancer for a multi-master-cluster of three Tomcats-Servers. We can access the internal IP-Address of this load-balancer with an web-browser and change the ...
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1answer
175 views

Simple Load Balancing Questions for 2 Web and 1 DB server

We currently have one web server and one DB server to serve our websites. Things have been fine but slowly getting worse as the sites consume more and more CPU on the web server. We've reached the ...
4
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1answer
1k views

Load balancing Wordpress on Amazon Web Services: Managing changes

I am relatively new to Amazon Web Services and I am trying to get my head around how Elastic Load Balancing will work in context of my wordpress setup. In addition, I would like some advice on ...
0
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1answer
66 views

Nginx load balancing based on vhosts

Well, I've a setup with 1 load balancers and 2 backends (with nginx). They are both serving two website, beta.xxx.fr and xxx.fr. I want my load balancer to serve both websites. Have you got any idea ...
0
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1answer
107 views

Nginx load-balancing & geographic latency

I've recently been inspired by a blog post from AudioBox highlighting some of their experiences with Amazon EC2 and why they switched over to a self-managed VPS. While the EC2 services certainly look ...
0
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0answers
171 views

Load-balancing PPTP connections

I'm trying to load balance two PPTP connections, connected to the same server. I use the following script, but there is no send and receive via PPTP connections. What part am I doing wrong? Are there ...
0
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0answers
151 views

nginx loadbalancer is redirecting to the wrong port

I am trying to get the nxinx load balancer to work. I have the following configuration: upstream backend { server app-1.example.com:8001 max_fails=3 fail_timeout=60s; server ...
0
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1answer
662 views

HAProxy pgsql-check error

I use HAProxy 1.5-dev21 to load balance PostgreSQL connections over some read-only Postgresql 9.2 servers. Version 1.5 of HAProxy implements a pgsql-check option, similar to mysql-check. Here is my ...
2
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1answer
259 views

HAProxy: routing by Basic Auth credentials

I have many requests coming in from a single IP with credentials supplied in the HTTP Header in Basic Auth format. Even though the origin is the same, the credentials vary frequently across requests. ...
1
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2answers
255 views

Load Balancing MongoDB

I have an application written in java with tomcat that I am ready to start scaling for production. As I understand it, i shouldn't use a load balancer with mongodb router instances as it can cause ...
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2answers
1k views

Force DHCP Reservation Updates to Secondary DHCP Server in Windows Server 2012 R2

I have setup and configured two DHCP servers on my private network in load balancing mode as outlined in the following technet article: http://technet.microsoft.com/en-us/library/dn338979.aspx Both ...
1
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1answer
30 views

“Connection” HTTP header in load balancers

Do load balancers remove the HTTP header indicated in the "Connection" header? As far as I know, headers indicated in the "Connection" header are not supposed to be populated further than the first ...
0
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0answers
110 views

Tomcat fails to return syn requests to F5

I have an F5 LTM sitting in front of two tomcat servers which host 4 applications. When I initially create the pools and add the members to the LTM I can hit all applications. This is the weird part, ...
0
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1answer
128 views

Multiple Amazon EC2 instances for a single application [closed]

I'm new to AWS and currently using a single m1.medium EC2 instance to run an application. I've been reading up on AWS terminology, but there's one thing I haven't gotten a clear answer on. I know how ...
1
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1answer
277 views

Load balancing architecture: sticky sessions and dynamic backends

I'm struggling to find a solution to a specific load balancing requirement. It seems that various combinations of HAProxy, Nginx, Varnish and Apache's mod_proxy_balancer can do some but not all of ...
-1
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1answer
73 views

separate mysql server and webserver and consequences [closed]

I have a web application. bought a pretty strong server for it. Server specification is below: CPU: DUAL E5-2620 RAM: 32 GB DDR3 HDD: 2 x 300GB SAS 10K Network: 100mbps/10TB internet. WebServer ...
1
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2answers
2k 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) ...
2
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0answers
99 views

Pound sticky sessions between HTTP and HTTPS

I have pound setup for http and https, and have sticky sessions based on cookie for both. However, sessions are not sticky when jumping from http to https. Is there anyway to do this in Pound? It's ...
0
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1answer
377 views

Load balancing with Piranha+Pulse stopped working after 'yum update'

We have been successfully using the load balancing system Piranha+Pulse for 15 months on our CentOS 6 system. We use it to load balance two web servers. Note that our web servers are also our load ...
1
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2answers
78 views

Solution to download multiple files for thousands of users

We have a business need and should allow 2000 PCs to download 150 - 200 Mb (10 - 20 files) as fast as possible. The download will start when something from server will trigger it. All PCs are pooling ...
0
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2answers
324 views

how to configure Apache httpd.conf for x-forward logger

I would like to configure my httpd.conf to see the client IP address and some more information. this is what I have: LogLevel warn LogFormat "%{X-Forwarded-For}i %l %u %t \"%r\" %>s %b ...
2
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2answers
165 views

LoadMaster shows server as “UP” but I can't access

I'm setting up load balancing through KEMP LoadMaster. I've setup everything and got to the point where real servers are up, virtual server is up, ping works but http request doesn't go through. ...
0
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1answer
295 views

Nginx byte-serving http requests

I know it is possible to use Nginx to spread requests over multiple web servers thus doing load balancing. This solution requires back-end servers having high bandwidth and is effective when dealing ...
0
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1answer
258 views

Issues Load balancing .Net web app using State Server

We have multiple web servers behind a Netscaler load balancer. The (Win2008) servers each host an ASP.Net application (using iis 6.1) that are configured to use a central server running the .Net ...
1
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3answers
74 views

How to share Apache2 virtual host configuration between two linux servers?

What is the best option to share configuration directives between Apache2 servers. This is required in order to employ stable load balancing. The most important directives are those that define the ...
4
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1answer
258 views

Preserve response headers in NGINX load balancer

I have set up NGINX as a load balancer for two Domino servers this way: http { upstream www.mydomain.com { server 1.1.1.1; server 2.2.2.2 backup; } server { listen ...
1
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0answers
576 views

Nginx load balancing redirects to upstream “name”

Introduction: Please read this serverfault question on nginx load balancing issue with 301 from backend. Somewhat similar to my problem, but the answer doesn't work. Nginx is redirecting to the ...
4
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2answers
708 views

How to scale up a web server supporting long polling

I am planing to add more web application servers to support increasing clients, deploying HAproxy and Keepalived for load balancing and High availability. My server usage has the following ...
3
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2answers
532 views

Nginx choose upstream depending on args

I need to two different sets of upstreams. But all my requests come from the same URL (same path). The difference is that some request will have a special argument and some won't. Depending on that, I ...
1
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1answer
612 views

Nginx Reverse proxy leading to Redirect loop

I have a load balancer (Nginx) and another Apache server which is hosting a wordpress blog (at /blog). I want all my traffic on my load balancer at /blog to go to this Apache server. I have the ...
1
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2answers
603 views

HAproxy for postfix

I want to setup HA postfix mail servers with 2 postfix instances. I have two postfix servers and I configured two postfix instances on these servers. Now I want to know how to configure HAproxy ...
2
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0answers
73 views

Multiple httpd with JBoss cluster: provide httpd HA

I have a working configuration like this: +-----+ +-----+ +-----+ +-----+ | i1 | | i2 | | i3 | ... | in | JBoss Cluster +--+--+ +--+--+ +--+--+ +--+--+ | ...
0
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1answer
65 views

nginx load-balancing doesn't neglect nonworking ip

Iam new to nginx and I have this issue I can't understand. Iam using nginx as a load balancer to three cloud servers.This is nginx configuration : upstream dummyname { server #.#.#.# ...
0
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1answer
36 views

Network Load Balancing - Server 2008 R2

I have 2 virtual Windows Server 2008 R2 instances that I am load balancing with Widnows Network Load Balancing. Since they are on vmware, each machine has 1 nic and uses multicast mode. With ...
1
vote
1answer
328 views

How does HAProxy loadbalancing forward the request?

I'm trying to understand how the loadbalancing in HAProxy works so that I can do some capacity planning. So which one is the right way the HAProxy load balancing works? Scenario A: Request from ...
1
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1answer
2k views

View Current State of Keepalived

Is there a way to view the current state (Master/Backup) in a command line on a server instance? Thanks.
1
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1answer
465 views

MPIO Issue With Server 2012 R2 iSCSI Target

The Setup. We just got 2 HP DL360 g6's Server 2012, running Hyper-V, server1 has an additional P800 controller for an MSA70 sas storage, and is hosting iscsi targets for hyper-v's on server 2. both ...
1
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1answer
5k views

HAproxy 503 Service Unavailable No server is available to handle this request

I'm new to this load balancing scenario and I'm being tasked to figure out how to make this load balancing works. My environment: Centos 6.4 64 Bit Webserver: Lighttpd All running in ESXI virtual ...
0
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0answers
175 views

SSL Integration with apache used for load balancing

We are using apache mod-proxy on top of tomcat to achive load balancing. It is working fine , now we are planning to move to https from httpd . For that my configuration looks as follows ...
2
votes
0answers
53 views

Load balancing inconsistencies & AD server causing network crawl

We've configured a TS load balancing farm consisting of the Active Directory server which acts as the TS Broker and 6 Terminal Servers who are members of the farm. The load balancing is set to basic ...
2
votes
1answer
165 views

split web traffic 10% to a new site version and 90% to old?

What if a have a site: test.com and I've developed a new version of that site. And I need to test-drive it first before launching it full-scale. So I want to split web traffic 10% to a new site ...
8
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4answers
1k views

How to limit number of sessions?

I need a way to track and limit web sessions to a web app. A "session" is loosely defined as the single user browsing the pages of the said web app. I think it can be translated to: a session is ...
1
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3answers
868 views

Modern DNS load-balancing solutions [closed]

I'm learning distributes systems and now I'm researching the DNS load-balancing topic. I have few Linux servers and I want to setup next configuration: one DNS load-balancer that resolves IP ...
0
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1answer
575 views

Trying to setup transparent, load balancing, SSL reverse proxy. Is it possible?

I've done a few weeks worth of research on this topic for a project, and unfortunately I'm a simple code monkey, my knowledge of networking and SSL are limited. Pretty much every search I've done so ...
1
vote
2answers
945 views

Failover for server with dual WAN

I have one mail server, one SonicWall firewall, two Internet providers, and an internal DNS server. I have WAN failover set up on the SonicWall so in the event that the primary connection is down ...
0
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1answer
208 views

How to implement High Availability easily?

I have a website that is currently hosted in a single DigitalOcean region. DO are great, but occasionally they have routing issues in a region and the website goes down. The stack is very simple - a ...
1
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2answers
240 views

Load balancing across uneven links (Cisco\OSPF)

I know that OSPF will load balance across equal cost paths such as: R1 ------------------ R3 | 100mbit | | | | 1gbit| |100mbit | | ...
0
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1answer
55 views

How to evaluate if my Apache needs another server and/or load balancer? [duplicate]

I have an Apache web application which is serving ~2k Requests Per Minute. The current infrastructure includes two servers, one acting as Apache + database, and the second one just database. I'm ...