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2
votes
1answer
18 views

bind zone file setup for dns round robin

I would like to set up load balancing for my website using DNS round robin. My DNS is managed by my own CentOS 6 server running bind. I added the following into my zone file: @ ...
1
vote
1answer
44 views

Setup an intelligent Round-Robin strategy

According to a lot of research - I discovered the design pattern Round Robin. It basically solves the idea I want to adopt. I want to have a pool with physical servers, each their own IP address ...
0
votes
0answers
76 views

Load Balancing Nginx

Okay I have edited my question :) I would like to point all traffic at my dedicated server running Nginx and have that handle 70-80% of the load while also distributing the traffic to some other VPS ...
1
vote
0answers
77 views

Can stunnel be used to round robin tcp connections without SSL?

Today, I'm already using stunnel to provide SSL termination to a set of TCP services where the connections are round-robin'ed, this is done, for example, like follows: [myserv] accept = 443 connect = ...
2
votes
2answers
2k views

HAProxy with SSL and sticky sessions

We're trying to set up HAProxy (v1.5.1) to use SSL. While we managed to do that, we're having some issues with the round robin settings: We do want to have stick sessions, but haproxy seems to send ...
0
votes
0answers
53 views

Nginx: Simple(r) solution to round robin rewrite URL; appending an identifier (for A/B testing)?

For A/B testing I'd like to alternately rewrite a URL and append an identifier as query string. Scenario: -> GET /path <- HTTP/1.1 302 Moved <- Location: /path?a [redirected request ...
0
votes
1answer
112 views

round-robin director ALWAYS directs request to the same backend

I've set up one server with Varnish as a load balancer and two servers running nginx/unicorn/sinatra for demo purpose. All three servers are accessible! My varnish vcl file: backend web2 { .host = ...
-1
votes
3answers
227 views

Pros and Cons of dedicated Load Balancer vs Round Robin DNS [closed]

2 Apache web servers with identical vhosts to serve a few hundred clients. RHEL 6 on all boxes. What are the pros and cons to having a load balancer with a VIP, and pointing all of the DNS A records ...
2
votes
0answers
464 views

Varnish 3.0.5 round robin director not balancing

I have an architecture with two varnish servers sitting in front of 5 webheads. Each varnish server is configured with a round robin backend director, but at times of moderate to high load varnish ...
0
votes
1answer
132 views

Puppet Master does not seem to be receiving certificate to sign from agent

I wanted to configure DNS round robin on my Puppet 2.7.23 Master servers. I configured 2 Red Hat 6.5 servers with Puppet running via Rack with Passenger on Apache 2.2.15 with mod_ssl. I configured ...
5
votes
3answers
1k views

Is round-robin DNS a possible solution for high availability?

Let's say I have 2 IPs for a given domain (round-robin DNS). If one the IPs becomes unresponsive, will clients try to connect to the other IP? or they will just fail to establish comunication with the ...
2
votes
0answers
46 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 ...
1
vote
2answers
3k views

Is it possible to have round-robin DNS with /etc/hosts file?

Is it possible to have round-robin DNS with the follwing configuration in /etc/hosts? 192.168.4.10 shaakunthala.local 192.168.4.20 shaakunthala.local I'm on Linux.
0
votes
1answer
110 views

Load balancing of recipients email adresses on Linux SMTP servers

Background information: We are a provider of web-hosting and email (among other services) and we need several load balanced SMTP servers to fix all our customers needs. The problem: Every once and a ...
1
vote
1answer
77 views

Round Robin with single source

We have built ourselves an API and are busy scaling it. At current we have 6 hosts and we use DNS Round Robin to spread the load. However a lot of our traffic comes from single source. We plug into ...
0
votes
1answer
57 views

DNS Load Balance for Static Website

This is more of a educational question in comparison to a production environment. I have an AD environment with two IIS servers hosting the identical website content. For arguements sake lets say it ...
2
votes
0answers
173 views

How does Round robin policy of MPIO work in Windows 2008 R2

I have a Dell server with a 1G dual port iSCSI adapter. I have installed the NIC driver and using Microsoft iSCSI initiator, map few luns to both the ports and enable MPIO. The target I used was ...
0
votes
2answers
52 views

Using dual isp and static ip [closed]

what are the options to increase/backup bandwidth of a load balanced web farm gaining bandwidth from more isps? What are hardware/ip requirement to benefict from the 2 lines? ...
-2
votes
2answers
276 views

How can I use multiple ISPs to increase bandwidth and redundancy for my website? [closed]

I have an HTTP server behind Microsoft load balancing. DNS is provided by the hosting provider. I want to increase the available bandwidth by adding another internet ISP. How can I ensure ...
1
vote
1answer
76 views

Can I Repeat Records in DNS Load Balancing?

I would like to bring up the load on a new server slowly over time. Unfortunately there is no front-end load balancer we can use to adjust this, so I just insert a new DNS record for the domain name. ...
0
votes
1answer
207 views

Multi-level wildcard DNS matched by *.domain.com?

Q1: Does a DNS rule for *.domain.com match multi-level domain names? In other words, if I just set *.domain.com in my DNS records, will it match all of: a.domain.com b.a.domain.com c.b.a.domain.com ...
3
votes
2answers
952 views

DNS Round-robin, Load Balancing, Load sharing, and failover in 2012

I have been reading many posts on serverfault as well as on other sites regarding all these. What I understand is, Multiple A records(round-robin dns) can be used for both : Load sharing ...
1
vote
2answers
145 views

Multiple DNS A records referencing the same host

If I create multiple DNS A records for the same hosts, for example: my-domain.com A 1.2.3.4 3600s my-domain.com A 4.5.6.7 3600s my-domain.com A 7.8.9.0 3600s Do queries really ...
0
votes
4answers
756 views

Avoiding 502 Bad gateway in a round robin webserver process restart

I have a load balancer/reverse proxy (either nginx or cherokee, does not matter which) deployed on my server and it points to multiple background webserver processes (either gunicorn or cherrypy, does ...
0
votes
1answer
229 views

Using Round Robin DNS on simple VPN setup

We have two internet connections which are load balanced to share the load between the two. We set this up after one of the internet provider proved to be less than reliable but great speed and ...
1
vote
2answers
2k views

PowerDNS CNAME with multiple A records produces unexpected results

This problem from what i can tell is isolated to PowerDNS. The servers are running two packages pdns-static-3.0.1-1.i386.rpm and pdns-recursor-3.3-1.i386.rpm on the most recent version of Amazon ...
3
votes
2answers
742 views

DNS Round-robin does not load balance SSH

I tested DNS round-robin with SSH, and I noticed amazing results of the SSH client on my testing environment. I am using 3 nodes with RHEL 6.2 (openssh-5.3p1, bind-9.7.3-8.P3). Things like the host ...
0
votes
1answer
504 views

2 MX dns round robin for with same domain name for Exchange 2010

I have an Exchange 2010 server that is visible under 2 MX records mx.acme.com and mx1.acme.com with 2 different IP addreses from 2 different network providers. They both report as mx.acme.com when ...
2
votes
1answer
259 views

Best practice to connect to Citrix XenApp

What is best practice to connect to your Citrix XenApp servers? Putting the addresses of all servers in a client, or putting one dns entry with multiple a-records?
7
votes
5answers
913 views

Weighted round robins via TTL - possible?

I currently use DNS round robin for load balancing, which works great. The records look like this (I have a TTL of 120 seconds) ;; ANSWER SECTION: orion.2x.to. 116 IN A 80.237.201.41 ...
4
votes
4answers
3k views

DNS Round Robin: Do browsers stick to one IP as long as it is online?

How do most browsers behave if they get multiple A-records from the DNS server? Do the stick to one IP as long as it is reachable (and only use another if the IP is down)? Or do they switch all the ...
1
vote
1answer
144 views

Can the DNRD master file contain multiple records for a name?

I am trying to get DNRD to serve certain records from the master file in a round robin manner. I have tried several combinations e.g.: 1.1.1.1 hostnameA 2.2.2.2 hostnameA 1.1.1.1 2.2.2.2 ...
2
votes
2answers
2k views

Load balancing / Failover for multiple VPS's set across different datacenters

I know many variants of this question has been asked already, but I still can't find a good answer to my needs. What I want to do is setup a few (2 at minimum) VPS's to host my web apps on. I'd like ...
-1
votes
1answer
497 views

Bonding Virtual Server with an Apache Proxy Gateway

I have two situations. Individually they work great, but together, the system will not resolve my websites. A general overview of my test environment: Proxmox VE server that has multiple VMs for ...
1
vote
3answers
506 views

DNS Round Robin only if one goes down?

I've got two servers, equal capabilities in terms of processing power and load. What I am trying to accomplish is this: (I already own and run DNS servers so this shoudln't be a problem). Server A ...
-2
votes
2answers
681 views

DDoS Mitigation with round robin DNS? [duplicate]

Alright, so my friend and I are setting up a new website. We expect heavy DDoS attacks, so our plan is to use nginx to proxy from various cloud servers so that people can't find our actual server's ...
0
votes
1answer
343 views

ns1/ns2 for multiple cpanel web servers

this is the scenario I have access to 2 Cpanel/WHM Web Servers (server1, server2) My domain registrar is Name.com Current name servers on server1 ns1.maindns.com 1.1.1.1 ns2.maindns.com 1.1.1.2 ...
3
votes
4answers
357 views

Looking for a loadbalancer [closed]

I am looking for an open source loadbalancer for linux. My requirements are simple. I want One load balancer infront of multiple webservers. It should be able to split the load evenly among the ...
6
votes
2answers
4k views

Load Balancing Best Practices for Persistence

We run a web application serving up web APIs for an increasing number of clients. To start, the clients were generally home, office, or other wireless networks submitting chunked http uploads to our ...
2
votes
2answers
611 views

Does my BIND zone really provide redundancy and load balancing?

We have the following IP addresses (for example): 1.1.1.1 2.2.2.2 Each hosts the same website, but on a different server. We want to do some really simple load balancing by having web users visit a ...