0
votes
1answer
123 views

Configuring Azure Internal Load Balancer

I am attempting to configure a VNET using the new Internal Load Balancing feature in Azure. I plan to have 2 frontend servers communicating with 2 backend servers over an ILB (Internal Load ...
-1
votes
3answers
93 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 ...
1
vote
2answers
110 views

Cannot access my GitHub Pages website by IP Address

My custom domain works with GitHub Pages but I would like to understand how it actually works. For this example I am not using my custom domain at all. My GitHub Pages repository does not ...
1
vote
3answers
393 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 ...
1
vote
2answers
402 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 ...
2
votes
3answers
155 views

Is there a way to redirect an IP to another IP on Amazon EC2?

We're migrating our deployment from regular EC2 into a VPC, we have two load balancers in the public cloud that we have a number of domain "A" records pointed at, however I didn't realize that a ...
1
vote
2answers
143 views

What DNS servers to use with multiple connections

I have a complex configuration of multiple ADSL connections from multiple ISPs being load balanced by a Draytek Vigor 3300V+ My question is what DNS settings should I use. Should I use the ISP ...
1
vote
1answer
64 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
52 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
3answers
121 views

One Alias to point to multiple IP addresses

The problem I have is the following: I have distributed application (3 geographically spreader nodes), which on request returns large data sets. In order to reduce the network traffic, I need to ...
0
votes
0answers
139 views

Can someone guide me with setting up Network Load balancing for RDP connections?

We have two servers web3 and web4 and a domain controller mws. I have been trying to set up load balancing for users who use remote desktop connection to connect to web3 and web4, but have failed ...
3
votes
3answers
397 views

How can I create a “fail whale” for my website?

I have a website that we load-balance across a few machines. The load-balancer (a Brocade ServerIron ADX) is on the local network. I know it has the capability to configure a "backup" ip address to ...
-1
votes
2answers
90 views

Global DNS loadbalancing [closed]

Is it that the DNS queries from a particular region goes to DNS servers located nearest? How DNS servers are made aware of the geographical location of requesting IP address? Is that how the CDN ...
1
vote
1answer
72 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. ...
6
votes
9answers
1k views

Is there any DNS system or Service that is HTTPS aware?

Basically I need for DNS to respond with different CNAMES depending if the request was made for HTTPS or HTTP object. s.test.com -> IF(https) RESPONSE special.domain.com ELSE simple.domain.com ...
0
votes
1answer
151 views

Using Amazon route53 for high availability

Using Amazon Route53 DNS, is it possible to build a highly available setup pointing to multiple web servers not on Amazon? I don't need to worry about session stickyness. Let's assume I have two web ...
2
votes
2answers
146 views

Ways to do simple failover with one server and two IPs

The setup is one server (Windows 2008) at one location with two incoming connections. As the server has to interface with various on-site devices, and will have a small number of incoming ...
1
vote
1answer
170 views

Failover at the DNS Level (2 LB and 2 Static IP)

I'm building 2 boxes, each will be Static Content Server (NginX) + Load-Balancer (HAproxy) + DNS Server (NSD). The TTL on each DNS server for (A) records will be something like 30-60 seconds. ...
1
vote
1answer
38 views

Configure domain for 2 IP [closed]

I am doing a service that for each user creates subdomain. So for example I have 2 servers, each with own IP. For example www.example.com is only one IP. But all others should have proj1.example.com ...
3
votes
2answers
820 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 ...
2
votes
2answers
2k views

How does one point a domain to a load balancer that doesn't have a stable IP?

I'm trying to point mydomain.eu to an AWS load balancer, which, by its nature, does not have a stable IP, so I think I'm supposed to point the A record to a subdomain at Amazon, but as far as I can ...
2
votes
1answer
61 views

Assigning multiple public ips for a website

if we are having 3 webservers with same domain name and each with different public ip. Will this setup bring minimal load balancing. as we do a lookup of google.com it get resolved to 10+ ip.can this ...
3
votes
1answer
145 views

How to find out the location of Google IP number: e.g. 209.85.143.94

I am building DNS service and I need to find out location of DNS servers querying me. Apparently anyone who is using Google public DNS like 8.8.8.8 is coming from Google /17 network, and if I do geoip ...
2
votes
3answers
651 views

DNS Load Balancing over 20 servers with sticky session and security

I have 20 servers in 1 location and I would like to do load balancing. This can go up to 100 in any case. Is there any known method for doing this? I would like also to have some kind of mechanism ...
1
vote
1answer
303 views

create a CNAME record for AWS LoadBalancer DNS name

I am trying to setup a loadBalancer on AWS. The A-Record it gave me looks like myLoadBalancer-**********.us-east-1.elb.amazonaws.com however when i try to put that in my domain registrars A-Record, i ...
2
votes
1answer
494 views

Using LVS (Linux Virtual Server) for doing DNS HA

I have been trying to create an LVS DNS HA using CentOS 6.x: Piranha GUI to configure the DNS Pulse is the HA heart of CentOS LB IPTables to configure marks on the packets since DNS uses TCP and UDP ...
0
votes
1answer
106 views

Load balancing email server [duplicate]

Possible Duplicate: DNS e-mail load balancing My scenario is: php-script(mail originating) -> DNS load balancer (vps server).--vps1(relayhost 1) ...
0
votes
1answer
95 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 ...
7
votes
5answers
724 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 ...
0
votes
1answer
673 views

Connecting to Redundant NFS Servers (Load Balancers or Round-Robin DNS?)

In a typical NFS setup with redundant servers (multiple boxes), do people use a load balancer or round-robin DNS to achieve a single connection vector for clients? Is there a better way to do this ...
3
votes
2answers
309 views

Elastic Load Balancing using a chain of domains/hosts

I've setup an elastic load balancer on EC2 which (for example) has the public DNS (A Record) of: LB-165746761.eu-west-1.elb.amazonaws.com I've then registered a domain which I want to act as my ...
2
votes
2answers
154 views

Increasing load capacity for growing website

My website currently runs on a dedicated web server (with LiteSpeed) and dedicated MySQL database server. It's a download based site with a lot of user-generated content, which can be streamed and ...
1
vote
2answers
2k views

what IP address can I ping as a watchdog target for load balancer?

I'm setting up a load balancer for my network. I have three options to select as a verification method if WAN is still alive: Link Up (whether a modem is alive). This doesn't work for me because ...
2
votes
3answers
363 views

what is the best way to avoid DNS propogation delay while changing IP addresses ?

We have a situation where we'll be introducing a Load balancer in between the world and our pool of app servers. The DNS for our domain should point to the load balancer and it redirects traffic ...
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 ...
0
votes
2answers
251 views

Problems with bare domains and DNS load balancing?

Can using a bare domain as server address (i.e. using example.com not www.example.com) make DNS based load balancing harder in some manner? Load balancing examples: Round robin DNS load ...
1
vote
1answer
119 views

DNS load balancing with algorithm

I have 2 web servers that I want to load balance between them using the DNS technique. But the kind of load balancing I want to implement is a little bit different: When a request comes in to the ...
1
vote
3answers
446 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 ...
0
votes
1answer
385 views

Load Balancing in Amazon EC2 DNS,CNAME etc

I have a portal on amazon ec2. Which Many domains and also cname's point to this server elastic IP. Like aaa.com, bbb.com, ccc.com, *.abc.com. now I want to take to behind load balancer. The main ...
0
votes
2answers
1k views

Load Balancing in Amazon EC2 with multiple CNAME

My portal have multiple cname record, all point to same server. Like aaa.com, bbb.com and alson *.abc.com. I need this url in my web application to give proper content. Now I want move Amazon Load ...
0
votes
2answers
265 views

Basic EC2 Load Balancing Concepts [duplicate]

I am creating a site that I expect to receive DDoS attacks on occasion. I have created two EBS AMIs on Amazon EC2. One AMI for a MySQL Database and one for the web host. I have added an elastic IP ...
2
votes
3answers
159 views

DNS Load balancing vs Incremented DNS

I don't know much about DNS administration, etc, however I know about best practices in application programming. Currently, in my company, we have 6 servers respectively named : s1.domain.com ...
5
votes
2answers
3k 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
5answers
904 views

How can I serve a static landing page if my server is down?

I would like to fallback to a static webpage if my main web server is down (currently a Rackspace Cloud instance). This would be a sort of worse-case scenario that shouldn't happen, but has before ...
2
votes
1answer
439 views

DNS management: Route mydomain.com to www.mydomain.com using an Amazon loadbalancer

I mistakenly asked this question in stackoverlow however, it probably makes more sense here. My application is on amazon and i am using their EC2 loadbalancer. Amazon states on their site: DNS ...
0
votes
1answer
75 views

Load Sharing Regarding Large Websites

I have a question regarding Load Sharing for large websites. My Understanding: So if you have a website that has millions of fits a day you will need to have an architecture that can support this ...
1
vote
3answers
557 views

What other ways can I load balance EC2 servers without using Elastic Load Balancing?

I have a web application that consists of a web server managed by a web hosting firm, a set of EC2 instances in amazons cloud and a MySQL database (hosted on the webserver). MySQL is behind a firewall ...
0
votes
2answers
537 views

Help - since adding an elastic load balancer to my EC2 web application I cannot connect with the MySQL database (not in AWS)

I have a web application that uses an EC2 instance to receive uploaded images, resize and store on S3 and update my MySQL database with the image record. This database is hosted outside Amazon Web ...
2
votes
2answers
166 views

How can one domain route to an always-changing pool of servers?

I'm sure this is an easy solution, I'm just not too familiar with how DNS works or if that's even related to this problem. If I'm running a web service on amazon ec2, distributed across many ...
3
votes
6answers
2k views

How do I set up failover for a single web server using two ISPs?

I have one web server and two WAN connections (1 cable, 1 DSL). DNS is run offsite, and points to the IP address assigned by one of the ISPs. How can I have the second connection take over when the ...