Load balancing is a group of techniques used to ensure that loads are spread between multiple systems. The term is used on networking and server environments, with similar results. Network load balancing involves using multiple connections or links to spread speed or high demand between those ...
0
votes
0answers
17 views
Getting 502 instead of 503 when all backend servers are down running HAProxy behind Apache
I'm testing running HAProxy as a dedicated load balancer behind Apache 2.2, replacing our current configuration where we use Apache's load balancer. In our current, Apache only, set-up if all the ...
-4
votes
1answer
57 views
How to setup a multi-server network for a web application [closed]
I am experienced with development, but not with servers and networking. I am developing an application and stability is critical. What I am wondering is how my network should be structured and how it ...
-2
votes
0answers
32 views
Which linux distribution is advisable to setup a server? [closed]
There are Many distributions of Linux, I have no idea for Used to mount a web server (load balancers, MySQL, Apache) and so on.
1
vote
1answer
25 views
Programatically blocking a url to rate limit, unblocking or expiring the block
My requirements are to be able to rate limit or temporarily hard block any requests to our server for a particular URL if the client sends more than x requests per hour.
There are about 250K urls ...
1
vote
1answer
41 views
Load balancing ISPs on Ubuntu Server
I have a Dell server with Ubuntu 11.10 Server installed on it. The server has 3 Ethernet cards eth0, eth1 and eth2.
I have two ISPs say ISP1, ISP2
eth0 has a public IP (provided by ISP1 - we require ...
-2
votes
2answers
56 views
Simple IP load balancer for web service that runs on Windows XP or Windows 7 Professional?
I've a closed code application that needs to connect to a web service that needs to run on XPs or Windows 7 (desktop). The application can only connect to a single IP address. The application is low ...
0
votes
0answers
36 views
Linode Nodebalancer - is this based on third party software?
Does anyone know what software Linode's node balancers are based on?
2
votes
2answers
61 views
DNS loadbalancing
I have several server. We want set up new big service (word 'big' came from my boss :P ).
I want use two Cisco LoadBalancer ACE 4700 but what will it happen if one of ACE is down?
So I want setup DNS ...
0
votes
0answers
9 views
AWS App server downscale causes overload to other app server
I'm running a high traffic service on AWS/Scalr.
The application side has nginx as load balancer with app server(s) downstream. It is managed by scalr including dns updates.
When the traffic gets ...
1
vote
1answer
35 views
How to inspect load balancer L7 Injected Headers
There is a hardware LB redirecting http to an Nginx SSL Offloader listening only at 443. I have no access to the LB, but I need to verify if it is injecting the X-Forwarded-For header.
Why? I'm ...
0
votes
0answers
25 views
Software Proxy & LB options. Must be layer 3 and redundant
Currently we have good ol' LVS running in the same subnet as our webservers. We use Piranha for automatic redundancy and take full advantage of the status check scripts to not only automatically ...
-3
votes
1answer
44 views
Using ClearOS virtual machine for multi-WAN setup [closed]
I created a Virtual Machine with ClearOS to set up two internet connections, but I'm having a little trouble to divide the two, someone would have some guide for me to support me?
0
votes
1answer
31 views
Configuring Internet links on different servers
In the company I work at we use two internet links which used to be balanced by a D-link router, but the router recently failed.
To temporarily solve the problem I have set up one of the links ...
1
vote
0answers
50 views
Amazon EC2 Elastic Load Balancing - strategy for zero downtime server restart
I have 5 web servers (Apache/mod_perl) behind Amazon EC2 Elastic Load Balancing, when I deploy codes to the web servers, I am doing this..
For each machine, shutdown the Apache
Update the code
Start ...
0
votes
2answers
60 views
load balancer topology
I am setting up a Load balancer with two backend webservers and one backend mysql server.
Is it a good idea to have dedicated mysql server ? or will it impact sql queries?
all the servers are ...
0
votes
1answer
56 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 ...
1
vote
1answer
51 views
Load Balancing, Active-Active config and dynamic server addition
Right.
I'm looking into setting up a system something like this:
/ [Load Balancer] \ /\/\/\/\/\/\/\
[LAN1] - ----- | Server Pool |
\ [Load Balancer] / ...
0
votes
1answer
45 views
Configure HAProxy for rabbitmq
I want to use HAProxy as a load balancer. I want to put two rabbitmq server behind haproxy. Both the rabbitmq server are on different instance of EC2. I have configure HAProxy server by following this ...
4
votes
2answers
77 views
Load Balance Mail Gateways
I am currently trying to find a way to Load Balance our 4 Mail Gateways ( Running Mail Cleaner). I was able to bring up HAProxy and use tcp mode to load balance without issue. The only real problem ...
-1
votes
0answers
60 views
nginx as load balancer
I am running into a very wierd problem, ( may be I have misconfigured something in nginx)
here is my scenario
I have a nginx server listening on front end and acting as only load balancer.
Two ...
1
vote
2answers
56 views
Load balancers and going with dedicated over ec2
One mental block I have is load balancers, and I like how AWS/ec2 handles this for you.
BUT, I like dedicated servers for the performance and cost benefits etc.
I'd love if someone who is well ...
0
votes
1answer
82 views
AlwaysOn SQL Server 2012 - any option for true active/active?
I'm about to upgrade and consolidate a group of SQL Server 2008R2 to a single SQL Server 2012.
I want have high availability and looking for the different options. The number of databases is fairly ...
2
votes
0answers
48 views
Log response body in nginx
How do you log the response body (not request body) in nginx? I could not find such a variable in any of the modules (only the request body).
We are using nginx as a reverse proxy/loadbalancer and ...
2
votes
1answer
87 views
Load balance HTTP based on a percentage of traffic or requests?
I want to have v1 of my application in one pool and version v1.1 in another pool and then slowly ramp up the traffic going to pool two and reduce it to pool one.
Can anyone show some concrete ...
1
vote
1answer
44 views
Load balancing setup
Server 1(Proxy) -> Server2/Server3(Apache) -> Server4(mySQL)
For server 1 I would setup HARproxy with something like?
global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
...
3
votes
1answer
63 views
Active Active failover
I have an application which is handling UDP traffic. Need to run the setup in active-active mode with two machines and only one IP exposed to external world.
Will LVS be helpful in this scenario or ...
6
votes
3answers
89 views
Does having a load balancer allow you to re-use socket connections?
I have a service where servers upload 20kb xml files to my server.
There is no session, it is a single POST request and that's it. Each individual request is authenticated based on the contents of ...
0
votes
1answer
27 views
Grails and Tomcat 7 load balancing
I have deployed a grails 1.37 app on to tomcat. May I know how to do load balancing and clustering?>
0
votes
2answers
56 views
Active-active load balancers
I have a requirement to setup two load balancers in ACTIVE-ACTIVE mode distributing UDP traffic to back-end processing servers.
I found a tool saru with ultramonkey but it seems project saru is not ...
-3
votes
4answers
112 views
Can all routers do load balancing?
I want to use a Cisco 877 router to load balance two WAN connections, each coming in on a different ethernet port. The ISP tells me this isn't possible.
My understanding is that all routers are ...
0
votes
0answers
39 views
Configuration issue with load balancer | SSL received a record that exceeded the maximum permissible length
I am facing and issue while accessing my webserver/application through load balancer, I have configured my application for both http and https ports. Everything works fine if I am directly accessing ...
0
votes
1answer
87 views
nginx proxy_cache: limit parallel requests to a backend
I am using nginx as a reverse proxy to my backend(s). Configuration is pretty basic, e.g. the core is just:
upstream myservice {
server 127.0.0.1:80;
server 123.123.123.123:80;
}
location / ...
1
vote
1answer
38 views
Limit requests per minute in nginx
I would like to set a limit on the number of requests a single client IP address can make to my server, based on their IP address. Nginx has a limit_req_zone directive. However, this directive will ...
0
votes
1answer
78 views
haproxy and persistant connections
I am using HAproxy to load balance between more web server. Those webservers are using PHP and sessions to keep one's session open.
Now, I think that when a user refreshes the page, it is sent to one ...
0
votes
2answers
56 views
Rackspace RackConnect Configuration
We currently have a dedicated web server and database server with Rackspace.
We have a new web app that we would like to bring up on the Rackspace Cloud service. We are looking at the RackConnect ...
-1
votes
1answer
64 views
Load balancing email server [closed]
Possible Duplicate:
DNS e-mail load balancing
My scenario is:
php-script(mail originating) -> DNS load balancer (vps server).--vps1(relayhost 1)
...
3
votes
2answers
47 views
Mongo database replicas on the same machines as load balanced webservers?
We're testing deployment of a web app on Amazon's EC2 which uses MongoDB for the database. Mongo recommends using at least 3 nodes for replication for data integrity. Although this is testing, we'd ...
0
votes
2answers
27 views
Load balancing between windows 2003 standard (4GB) and enterprise 64GB
Does anyone know if its possible to windows load balance between windows 2003 standard (4GB) and enterprise 64GB?
Its for a web farm running iis
0
votes
1answer
51 views
Akamai Website Fail-over trigger
My organisation currently has 2 data centres from which it hosts its corporate website, with Akamai providing load-balancing, and other CDN services. Now, I'm told that if our server stack in 1 data ...
1
vote
2answers
175 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 ...
1
vote
2answers
62 views
nginx load balancing issue with 301 from backend
I am running into an odd problem for which I am not sure if it is a configuration issue or a bug in nginx. My setup is a nginx reverse proxy which has Apache2 backend servers. The load balancer is ...
1
vote
3answers
92 views
Shared PHP Sessions in Load Balanced httpd environment
I have two httpd servers running PHP on RHEL 5.7. Initially I was sharing PHP sessions between the servers using a common NFS share that was hosted on a third server. This was causing slow downs and ...
1
vote
1answer
55 views
Non-HTTP traffic on port 80 across Cisco load balancer
Is it possible to configure port 80 on a Cisco load balancer as being general TCP, rather than specifically HTTP, in order to support more protocols on that port?
I am attempting to get Websockets ...
0
votes
1answer
26 views
sasl and tls with dns load balancing
I am using DNS load balancing in my centOs 5 server.The mail sent to the load balancer server are balanced by sending them to 4 more servers who then pass the mails to their destinations in the ...
5
votes
4answers
219 views
Is there an advantage to load balancing using multiple VMs all on the same hardware?
Some collegues are suggesting a web load balancing schema with multiple web servers (IIS7) on different virtual machines all running on the same hardware.
Is this a truly advantageous setup? All ...
2
votes
1answer
56 views
Magento - Users unable to login from corporate networks with Bluecoat / F5 Load balancers
Hoping someone has come across this issue before with Magento and corporate clients.
We have two clients for our Magento site who both have their internal networks setup using bluecoat security ...
1
vote
0answers
23 views
ServerIron: How do I configure a real server to be in 3 VIPs at the same time?
I'm forced to work on an old piece of hardware: Foundry ServerIron 450
I have a host that needs to be in 3 VIPs at the same time: 10.1.1.21:3333 aka (host-a:3333)
The problem I'm having is that when ...
1
vote
1answer
67 views
Direct Routing in Load Balancer
I wish to set up an load balancer via direct routing switching technique.I installed ipvsadm via
$ sudo apt-get install ipvsadm
Setup
Virtual IP is 172.17.10.173 subnet mask 255.255.240.0
linux ...
0
votes
0answers
21 views
Handling Bandwidth Bottlenecks with Multiple IP Addresses in IIS Hosting
I have a virtual server which has 3 IPs assigned to one nic(1GB). And this server hosts a website by IIS 7.0. Normally, one IP address is assigned to "www" host name in the DNS Server. And sometimes, ...
1
vote
3answers
82 views
Redirecting specific traffic to amazon AWS
My server has recieved sudden increase in the (read) web traffic, requesting many map image tiles, and apache cannot handle it.
Apache cannot even handle the redirections! The average load I get in ...
