1
vote
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 ...
0
votes
2answers
38 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/ ...
0
votes
2answers
132 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 ...
0
votes
0answers
28 views

Pound: address already in use

Below is the config that I use in pound for load-balancing a set of Tomcat. To get started I just used one tomcat instance. The URLs that I want pound to forward is of the type ...
0
votes
1answer
59 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
votes
1answer
147 views

Load balancing and failover for streaming solutions

I have a content distribution system which most of the time delivers VOD and audio. However, recently we have also moved into the live-streaming business. This however has raised a few issues ...
2
votes
1answer
242 views

What is the best way to load balance multiple sock5 proxys on seperate VM's in the same datacenter?

I am currently trying to figure out the best way to load balance multiple sock 5 proxy servers for my new project. I was looking into programs like HA proxy, but it seems to only load balance HTTP ...
1
vote
0answers
30 views

Prevent NGINX from rerouting to a backend that was previously down

I'm using NGINX's ip_hash directive to ensure that client requests always end up at the same backend server. In the case of a backend server outage, NGINX will reroute to the available server, and ...
3
votes
2answers
423 views

Do multiple Nginx servers load balance the same IP address to the same backend with the ip_hash directive?

I have two separate Nginx machines. The domain uses round-robin DNS and has two A records, one for each of the two frontend Nginx server. Both Nginx servers use the ip_hash directive and proxy ...
1
vote
3answers
297 views

reverse proxy and load balance server architecture

While creating a load balanced and reverse proxy based architecture, how would the two be placed? Is this the correct architecture? First LB server, then proxy: - When client hits a URL, it is ...
3
votes
1answer
116 views

Appears to be “randomly” switching between the acl matched backend and the default backend

I have HAProxy acting as a proxy in front of: An NGinx instance An in-house load balancer in front of multiple dynamic services exposed with socket.io (websockets) My problem is that from time to ...
2
votes
1answer
687 views

Nginx + Haproxy + Thin + Rails - 503 Service Unavailable -

I don't know how troubleshoot this. I get "503 Service Unavailable" http error for all "nginx upstreams" proxy passing calls to haproxy fast_thin and slow_thin ( server 127.0.0.1:3100 and server ...
0
votes
2answers
222 views

Do proxies and/or load balancers alter HTTP query strings by default?

Introduction to the problem Recently I was working on some request signing algorithm and it came out the opinions about including query string in the part that is then signed are "diversified". Long ...
0
votes
3answers
558 views

HTTP load balancer with support for dynamic backend membership?

I would like to deploy a reverse proxy/HTTP load balancer in front of a number of backend application servers. The hitch is that the set of backends may change over time, and new application servers ...
0
votes
2answers
545 views

Apache Balancing by source IP

I am using Apache's Proxy Balancer to balance one sub domain (e.g. subdomain.domain.com) to an application which is located on 2 servers. Here an extract from my Apache configuration file: <Proxy ...
0
votes
1answer
298 views

Tomcat 7 won't allow me to have 2 Connector elements in configuration?

I need to have Tomcat 7 listen on 2 different ports for HTTP requests (the 2nd port makes webapps think it's receiving https requests because that's what's happening on the load balancer). But the ...
0
votes
1answer
1k views

What IP does nginx use for ip_hash sticky sessions?

Does nginx use the direct client's IP for ip_hash, or does it also observe X-forwarded-for HTTP header to use as the IP address to ip_hash? For example, in a situation where some clients using a ...
0
votes
1answer
734 views

HAProxy first direct all trafic to primary if off direct to secondary if primary back redirect back to primary

How can i achive the following with HAProxy with regards to its simple tutorial found here: http://www.webhostingtalk.com/showthread.php?t=627783 I would to use HAProxy first direct all trafic to ...
3
votes
1answer
153 views

Suggestions for swapping out a production server

Background My team has been investigating an issue in our production environment (see Stack Overflow post). We've looked thoroughly at application layer (i.e., code, logs, etc.) and also have done ...
1
vote
1answer
97 views

Proxy Bandwidth

If I put a reverse proxy in front of a load balancer Then does it take thrice the bandwidth to do requests? E.g. request 100mb video from http://site.com/ site.com gets request from proxy <- load ...
2
votes
3answers
642 views

Proxy to load balancer, bandwidth?

I have an Amazon Elastic Load Balancer. I can't set my domain apex -- domain.com to the ELB because Amazon doesn't provide an IP. If I: set up a new EC2 instance (whih has its own IP) set up a ...
0
votes
1answer
445 views

Apache Clustering via mod_proxy_balancer

I am using a load balancer to server a cluster. I can't get it to function. LoadModule authz_host_module modules/mod_authz_host.so LoadModule mime_module modules/mod_mime.so LoadModule ...
1
vote
1answer
199 views

Reverse proxy HTTP requests using database information

We have a slightly irregular web server: it serves user details based on the user's IP address. The user details are stored in several databases; each database stores information about a subset of ...
0
votes
2answers
66 views

Look through Apache Requests

is there any way to grab REQUEST variables as well as other apache information for each request processed? This would especially be handy through a load balancer and proxy as well in order to track ...
5
votes
2answers
820 views

Apache mod_proxy to another server

I am using the proxy_balancer in Apache2 to proxy requests to a Rails application to my rails server on the port the application is running on. This is how its set up... Rails Server Mongrel running ...
1
vote
2answers
868 views

FTP Load Balancer

I need an EC2 instance to balance all incoming FTP connections to a list of FTP servers (EC2 instances too). This list will be changed dynamically due to the load of the FTP servers (launch a new FTP ...
2
votes
1answer
889 views

Proxy SSL from load balancer

A server admin who is setting up a load balancer asked me if I wanted to: Host SSL certs directly on web servers or, Proxy SSL from the load balancer I've only done the former implementation. Can ...
10
votes
2answers
7k views

How to divert traffic based on hostname using HAProxy?

I've had some initial success with HAProxy setting up a bunch of app servers listening on various other ports. I now have another webserver listening on one port, and i'd like to what changes to make ...
0
votes
2answers
258 views

Proxy Server for Multiple Unreliable Links

A small LAN (15-20 users) has 3-4 internet connections on a mix of DSL / Cable / EVDO modems. All internet connections are connected to a unique interface on a linux box, which is in turn connected to ...
2
votes
4answers
1k views

What caching strategies can I implement between my web load balancer and my web farm?

I've got a web farm of IIS7 machines. works great. We're about to release an API to the wild. It's pretty simple but we know it's going to get hit pretty hard from day one (we have at least one signed ...
2
votes
6answers
2k views

HTTP load balancer with header-based routing?

I am looking for a HTTP load balancing solution that will provide the following: 1) Accept HTTP connections on port X and forward them to one of multiple other hosts (and/or ports), either randomly ...
10
votes
4answers
2k views

Load balancing using IIS7 request routing and load balancing module

Microsoft has a lot of documentation about their somewhat new load balancing and request routing module for IIS7 located here: ...