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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Azure load balancer security group attached to NAT pools

I'm looking to lock down a set of Azure load balancer NAT rules to certain CIDR address ranges via network security groups, for the purpose of not directly exposing SSH/RDP ports to the internet. The ...
2
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1answer
29 views
+50

Autoscaling containers through consul and registrator

I am using an infrastructure platform consisting of docker containers running on centOS host. Scaling multiple containers through docker compose. Consul for service discovery. Registrator for ...
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2answers
40 views

How to setup failover with rabbitmq cluster with a loadbalancer like f5

I have been trying to find information on f5 developer central and internet regarding the following setup with no luck. We want to have a rabbitmq cluster with 3 nodes. 1 node will always be primary/...
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How do I load balance between my dedicated servers? [closed]

I'm renting three dedicated servers in a data center. The data center does not offer any load balancing services, so I need to look elsewhere for that. My need is simple; I'm running a website and I ...
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1answer
35 views

Why is X_FORWARDED_FOR preferred over REMOTE_ADDR when fetching the user's IP? [closed]

Since X_FORWARDED_FOR can be easily spoofed, I think the normal way to get the user IP is using REMOTE_ADDR. I have heard that in case of using the last one, you can't have access to IP of people ...
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1answer
29 views

Security of SSL certs on AWS ELBs / SSL offloading

I have some concerns about security and am wondering how AWS will store an SSL certificate deployed to an ELB. I have a wildcard SSL cert for my domain that I want to make sure doesn't persist ...
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1answer
14 views

HaProxy Listen for both MySQL and HTTP

I realise that using HAPROXY for databases and servers works better if the database servers are external and separate but is it possible to have 2 servers replicating database and files to each other ...
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1answer
30 views

Reducing HTTPS handshake by http-keepalive behind a load balancer - possible?

I have an api into which ill get quite a few requests in https. Since its restful, each time the api is sent , it requires a full ssl handshake. On enabling http-keepalive , the latency of the request ...
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1answer
39 views

How can I configure an HAProxy server running behind a firewall?

I am having trouble with the following: I am setting up an HAProxy load balancer on CentOS 7 behind a firewall. The firewall on the HAProxy server as well as the outside firewall are configured so ...
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8 views

What happens to user sessions in ASPState DB when SQL Server Cluster DB is failed over from one box to another

One of our customers have a Production Cluster SQL Server architecture with two nodes. Our customer have an ASP.NET based web application which uses ASPState database to manage sessions. We need to ...
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2answers
37 views

Scalable way to install SSL certificates without downtime

We have a SaaS application that allows customers to use their own domain – pretty typical. At its core, the architecture has a simple catch-all virtual host (apache) and the software does the work of ...
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18 views

How can I control GCE LB to create max N TCP connections with my backend instance?

For each request that a client makes through a load balancer, the load balancer maintains two TCP connections. One connection is with the client and the other connection is to a back-end instance. GCE ...
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84 views

google load balancer + nginx + symfony2

i'm trying to configure a scalable symfony2 app, so i read this page https://cloud.google.com/compute/docs/load-balancing/http/cross-region-example i did every thing like they said, is working with a ...
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25 views

Google Cloud LoadBalancer is unable to map tcp connection between client and LB with tcp connection between LB and backed instance

I am seeing an issue during performance testing of our application. The issue is LoadBalancer is unable to map tcp connection between client and LB with tcp connection between LB and backed instance. ...
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29 views

Apache LoadBalancer goes into 302 infinite loop

I do see thousandths posts on Apache LoadBancer and quite a few on infinite loop with 302, but so far could not be able to fix my issue and would appreciate a comment/suggestion. I have installed ...
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2answers
41 views

Load Balancing & High Availability Network Limitations

I'm in the process of coming up with a highly available Apache / MySql group of virtual servers using HAProxy Reverse Proxy & Keepalive. I'm aware that I'm going to be using a floating public ip, ...
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8 views

litespeed webserver files and database replication

we are going to switch our webservers into litespeed...So now we have tried in trial version. Now, we have configured litespeed load balancer and two litespeed webservers with database replication ...
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6 views

In LVS with keepalived, should different virtual servers have different virtual routers?

I have LVS with Keepalived in a master/backup configuration, used as a load balancer for several virtual IPs. Currently the Keepalived configuration has a separate vrrp_instance for each VIP. Each ...
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41 views

Bizspark Azure - How to enable load balancer to see instance from multiple accounts

We have recently gained access to bizspark and want to create a load balancer which would use instances from all 5 accounts. I’ve tried several approaches, but could not figure out how to get the load ...
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1answer
62 views

Keepalive setting for Gunicorn behind ELB without Nginx

Our app's REST API is served by Gunicorn (not behind Nginx) running on AWS EC2 instances with a typical auto-scaling/load balancing setup. The load balancer's idle timeout is 60 seconds, and Gunicorn'...
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0answers
20 views

Monitoring HAProxy to determine need to scale

I'm learning about load-balancing and auto scaling at the moment. I have a VM running HAproxy with 3 nodes under it to distribute traffic. My endgoal is to spam it to overload number of requests it ...
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0answers
80 views

Nginx web server not displaying web content. Only showing the Default Nginx Page in my browser

This is the page appears when I call my webpage I configured two Nginx web server nodes with a Nignx load balancer. 192.168.0.100 - Nginx loadbalancer 192.168.0.101 - Nginx webserver1 192.168.0.102 - ...
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20 views

ProxyPass on Amazon EC2 behind a load-balancer

I am using ProxyPass on my local machine with following directive in apache conf and it works fine: ProxyPass /v2/ http://localhost:1337/ I need to do the same on Amazon EC2 instances which are ...
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1answer
53 views

Nginx upstream block nondefault port

experts. I am trying to configure nginx/1.10.0 for upstream to 2 https web servers on non standart port with ssl termination. Here is my current website setup in sites-available/ upstream backend {...
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2answers
48 views

Is it possible to point an IP address to a domain name?

Normally you point a domain name to an IP address(A record), but I want to do the opposite. There's a firm that needs to call my API at www.example.com but the firm says it can't call a domain name, ...
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1answer
41 views

Nginx upstream never flagged as down in vts status

We have 2 physical server which are basically identical (for load balancing and failover) One physical server consist of a bunch of docker containers including 1 x NginX 2 x WebSphere 8.5.5.8 ...
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0answers
17 views

DSR on a DNS Cache Server… How

I have a doubt/problem. I have to set a DNS Cache Server that is behind a LB F5, i was asked to set 2 types of IPs, 1 IP is on 10.xx.xx.xx and its used to listen and reply all the cache store queries, ...
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1answer
64 views

How to config nginx as sticky loadbalancer for both http and https

I have the config below. However, when user switch from http to https, the session doesn't stick no more. Eg. homepage http but payment page is https. How do I solve this? upstream backend { ...
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1answer
43 views

pacemaker virtual ip loadbalancing with clone and clusterip

I am trying to make a loadbalanced gateway for a group of natted machines. I have 3 centos nodes. Initially only one node was supposed to have the internal gateway ip and that works well. Traffic ...
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1answer
19 views

Application Gateway Load balancing mode

I have read in the docs (https://azure.microsoft.com/en-us/documentation/articles/application-gateway-introduction/) that the Load Balancers support sticky sessions where the client will always be ...
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30 views

NGINX PROXY 0000 1204 0000 0000 0000 0300 0000 8000

After last update of nginx all my pages are getting: 0000 1204 0000 0000 0000 0300 0000 8000 0400 0000 0000 0500 ffff ff00 0004 0800 0000 0000 7fff 0000 0000 0807 0000 0000 0000 0000 ...
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How to configure ELB load-balancer over HTTPS for two sites deployed to the same pair of servers?

I would appreciate immensely if you shed some light into what we might be missing or doing wrong. I am not completely in charge of the configuration, and I'm not an expert on the subject, but have ...
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1answer
36 views

Load balancer questions

I have a website (ex: www.website.com) on aws that uses a large amount of streaming data (up to 10mbps / user). Lets say that my website is slowing down because the server simply cannot handle that ...
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2answers
64 views

High CPU load of my VPS [closed]

I use VPS from digitalocean. The configuration is: 8GB RAM, 4 Core Processor, 80GB SSD with cpanel installed. Most visitors are in the site http://www.secretdiarybd.com/bn . Which is on wordpress ...
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0answers
10 views

Java applet blocked?

I have a server application on GCE and is failing to load a Java applet to client side. Is there any GCE configuration to set? This happened after configure Load Balance with https and session ...
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0answers
30 views

HAProxy ACL with map 'src_http_req_rate' is neither a number nor a supported operator

I am using a map for storing the maximum request rate an IP can do in HAProxy. For example: ips.map #ip count 172.17.0.1 5 In HAProxy I want to limit the average number of requests to the ...
3
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1answer
141 views

Create a multi-homed linux load balancer with two internet connections and one LAN connection

OK,... this has possibly been answered, unfortunately, I have not found anything that looks like it might be the resolution. Ive looked at these pages and they have some useful information, but not ...
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42 views

Load balance two ADSL connections Centos 7

I have centos 7 server working as a gateway for my network with three LAN cards and two internet connections from different ISPs , i want to combine the two connections and balance the network load ...
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1answer
17 views

What is the exact Juniper and Cisco router per-packet balancing hash algorithm?

Due to JunOS and Cisco documentation there is ability to configure hashing algorithm choosing one of the next-hop from the several multiple equal-cost paths. There is information about fields that ...
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101 views

AWS ELB with SSL backend adds proxy protocol inside SSL stream

Note, this has been also posted in http://thread.gmane.org/gmane.comp.web.haproxy/27737 we are trying to configure this architecture: ELB terminating SSL, using preconfigured certificates. (this ...
2
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1answer
18 views

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 ...
0
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1answer
141 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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1answer
23 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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0answers
21 views

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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0answers
12 views

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

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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1answer
25 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
112 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 ...
1
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1answer
49 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 /...
1
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1answer
36 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 ...