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aws ec2 elastic ip to multiple instance

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http://serverfault.com – i am new to ec2, just finished setting up my micro instance and ready for production. i want to start w/ 2 medium instances. How do i assign my elastic IP to both of them so they act as 1? also would they share dB as well? my visualization is like a pair of raid drives where you have multiple machines acting as 1 am i going about it the right way? i have read that you should have 1 more instance than you need for redundancy. (HowTos)

u85500's picture
Submitted by u85500 on 05/17/2012

Stories similar to aws ec2 elastic ip to multiple instance

I can give a single instance an Elastic IP. No problem.

But I have an Elastic Beanstalk app. It can create and remove instances as needed. It has a load balancer.

I want to assign a reserved IP for an instance on EC2 so that I can use it in my configuration files. I associated an elastic IP with that instance but it changed when I stopped the instance. I have to setup application which depends on IP of instance, if IP changes, my application will fail to work. Please suggest a way so that the IP remains associated with instance permanently.

I am using AWS Elastic Beanstalk, it is easy to start with deploying Java based web app, which is great.

However, I want to install Memcached on every instance locally so they can be used for caching, but seems it validated the principle of Elastic Beanstalk?

EC2 instance communication 21 weeks 5 days ago

I currently have one EC2 instance that is starting to send alerts for high CPU usage. I want to create another instance and use this instance for the database and keep my existing instance for the web server.

I have assigned AutoScaling to my instance.

The problem is that I have to use a given DNS which is associated with my ElasticLoadBalance.

Not the DNS with the single instance.

Also I know that I cannot assign an elastic IP to the ElasticLoadBalance but only to a single Instance.

Q1. How can I register ElasticLoadBalance DNS to my domain since I cannot use Elastic IP?

Q2.

I modified an alestic ubuntu image on a t1.micro sized instance, saved the EBS boot image, and am now trying to re-start it using a slightly larger instance.

The only instances available (for regular and spot requests) are:

t1.micro m1.large etc...

Why can I not start an m1.small or m1.medium sized instance?

Micro instances are too weak, but a m1.large is too powerful...

Does AWS Elastic Load Balancer support having a single load Balancer to multiple EC2 Instance Pools?

I have three domains:

www.example.com api.example.com stats.example.com

And I'd like to serve them all behind a single load balancer, but with different EC2 instances. My Web site gets ultra light traffic, my api servers get light-traffic, and my stats servers get heavy traffic.

I can't seem to find the option to assign a newly created key pair to an amazon ec2 instance after deleting away the original key pair. I wanted to "deny" the first key pair from access to the instance, which i think i succeeded, however, i am unable to reassign the instance with another key pair.

I can't seem to find the option to assign a newly created key pair to an amazon ec2 instance after deleting away the original key pair. I wanted to "deny" the first key pair from access to the instance, which i think i succeeded, however, i am unable to reassign the instance with another key pair.