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2answers
20 views

AWS EC2 Auto Scaling Groups, RDS, Route 53 and Constantly changing IP addresses

I setup an auto scaling group on EC2 along with an RDS Postgres instance. I am not using ELB. Maybe I should be... The challenge is that every time a new EC2 instance is created it assigns a unique ...
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0answers
12 views

Advice on hosting multiple instance of web application with auto scaling as new users are added [on hold]

We are planning to host a web app which would be charged on per user basis. The idea is that as user signs up resources must be provisioned and the application be installed. But as a new user is ...
1
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1answer
23 views

How to get IP addresses from auto-scaled instances on AWS

We're working on setting up an auto-scalable web service on AWS. One of our requirements is that we can reload the web server configuration via SSH. Usually, this isn't very hard, as it's only a ...
1
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1answer
21 views

Automatically scale a Gluster cluster

I'm trying to configure a proof of concept where a server automatically gets spun up and joins a replication cluster. When the server is no longer needed, it gets spun down, and automatically removed ...
2
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2answers
50 views

Add/remove backend servers from HAProxy with command line

I've been searching for a way to add and remove backend servers from HAProxy dinamically, is there a wrapper or even an API to handle it? I want to make an auto-scale system with HAProxy and ...
1
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0answers
23 views

How are autoscaling group termination policies combined?

When creating an autoscaling group I can choose an ordered list of termination policies for its instances. Amazon's documentation states that You can use these policies individually, or combine ...
0
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2answers
120 views

EC2 autoscalling and code deployments

I'm just starting with EC2 load balancer and trying to implement autos-calling and fault-tolerance. The database is hosted in RDS, sessions are shared, files are shared using S3. I can't seem to ...
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1answer
561 views

Static IP address for outgoing traffic from AWS autoscaling group

I'm going to have a number of EC2 instances in an Elastic Beanstalk autoscaling group in a default subnet in a VPC. The app on these EC2 instances needs to connect to a third party service who uses an ...
0
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1answer
115 views

OpsWorks Auto Healing instances that fail ELB (load balancer) test

From the AWS documentation I understand that some kind of unresponsiveness from an instance will cause it to be terminated. There is nothing in the docs that would suggest that ELB health checks can ...
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0answers
59 views

Available Instance types for marketplace ami's

I based my autoscaling AMI's on the Turnkey Linux nginx AMI from the marketplace. I am now unable to select any of the newer generation instance types; for instance, my autoscaling uses m3.large type ...
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1answer
64 views

How can I level out my auto scaling checks?

So, I have been playing around with my auto scaling config and my Cloudwatch alarms to try and keep all my instances purring but not roaring. I can't seem to get rid of a constant yoyo. CPU usage ...
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0answers
52 views

How can I use ELB load balancing metrics in autoscaling group policy?

How do I configure an auto-scaling policy to work off the latency cloud watch metric of an associated ELB. I have looked at all the example cloud formation scripts and they only work upon metrics from ...
0
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1answer
41 views

Tools for heterogeneous systems and way to start MySQL cluster automatically

I'm trying to auto start of MySQL Cluster. There are several nodes and several distinct processes, and I must start them in the proper order. Firstly, I must start ndb_mgmd on management nodes, ...
0
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0answers
54 views

AWS Autoscale termination policies

I'm attempting to add an existing EC2 instance to an autoscale group I created as the initial instance. I've set the termination policy to 'NewestInstance' and if I understand correctly, when a new ...
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votes
1answer
264 views

AWS autoscaling. Launch Config/Auto Scaling Group and VPC instance with two ifaces

I want create an Launch Config/Auto Scaling Group to build instances inside an VPC with two subnets ("frontend" and "backend") I need these auto-scaled instances to have an interface in each of ...
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1answer
347 views

How do I create DNS entries for EC2 instances created by Auto Scaling?

I'm looking into using auto scaling groups for a tier of webservers that would be fronted by an ELB. One of the things I'm having a hard time with is how to give each new instance the proper DNS ...
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2answers
726 views

Spot instances frequently terminated in AWS auto scaling group (failing system health check)

We have 2 auto scaling groups (one for on-demand and one for spot instances) which are both set to a static number of instances (min, max, and desired are all the same - 5 in our case). The instances ...
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1answer
82 views

Elect which instance to tear down in Azure

Suppose I want to scale up/down my Azure Cloud Service Programmatically. The scaling up case is easy. But when scaling down, can I control which instance gets torn down? Is this predictable? In my ...
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0answers
18 views

Silencing a CloudWatch alarm when MinServers is not exceeded

We have two CloudWatch alarms used to scale up and down an AutoScaling group based on CPU usage. We also have a minimum of two instances running at a time. This means that when CPU load is low on both ...
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0answers
254 views

AWS Cloudformation Bootstraping with S3 File and Autoscaling

I just started trying to use CloudFormation and am using it for some autoscaling. I am new to all this so bare with me. I am using the sample template for autoscaling found here. ...
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1answer
150 views

m/monit and ec2 autoscaling

I've been using monit for some time and have really liked it thus far. I recently decided to give m/monit a try and the UI looks great and is super informative. My only hang up is monitoring servers ...
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votes
1answer
342 views

How do I autoscale windows servers w/ amazon ec2

I'm building a distributed app which consists of a load balancer, web-server, database server, messaging queue, and backend workers. Workers consume messages off the queue, perform tasks and then ...
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2answers
252 views

The Foreman EC2 Auto Scaling Cleanup

OK, so I have setup in the user-data section of my launch configuration, a way for an instance to automatically register itself with Foreman, and put itself into the correct host group through API ...
2
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1answer
782 views

AWS EC2 Instance Auto Scaling Confusion

So first off I'm completely new to AWS so bear with me. I have had one instance running for a few months now and I now need to autoscale it as I am getting bigger traffic spikes and it gets ...
0
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1answer
129 views

AWS Alarms in “ALARM” state not triggering Policy actions

Today I created an AutoScaling Group with several policies, each with an Alarm associated with a CloudWatch metric. The AutoScaling Group launched two instances, because that the minimum that I ...
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1answer
600 views

Can Amazon Elastic Beanstalk auto-scale Amazon RDS?

I'm planning to run a PHP/MySQL application using Amazon Elastic Beanstalk. In the settings I can define when it should launch new instances automatically (Auto-Scaling). However, as I understand ...
4
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2answers
1k views

EC2 Update my existing AMI

I'm using Elastic Load Balancing to load balance my Auto Scaling Group, for that I have a private AMI that hold my application server (Tomcat) and my web app deployed to it as war ... Now everything ...
1
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1answer
141 views

When EC2 instance goes down, how to bring up new machine with existing EBS volume?

We've got an app where customers upload data and documents to a number of EC2 instances. We store the uploads on EBS volumes. Occasionally our app will fail. Sometimes it's something in our app ...
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1answer
290 views

High Availability on Windows Azure Websites

One of my main apps is hosted on Windows Azure's Websites platform. Given Friday's downtime, I realized that I need something that allows my app to stay online if Azure has an outage again. My ...
0
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1answer
366 views

Cloud formation - updating a stack behind an elb doesnt update the AMI

We are powering our AWS EC2 instances using cloud formation. We have 3 different stacks - testing, staging and production. Our workflow to update the images for any of the stacks is as follows: ...
4
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1answer
940 views

How to automatically update nginx upstream server list when aws ec2 hostname changes or increases?

I want to setup autoscaling in AWS. I don't want to use Elastic Load Balancer. Autoscalling in Amazon creates EC2 instances seamlessly during demand spikes to maintain performance, and decreases ...
1
vote
1answer
724 views

AWS auto scaling setup bootstrap script and ssh access

I'm not a specialist in networking and I'm struggling at the moment trying to setup auto scaling for a web application. I have one server - we can call it master - (outside the auto scaling group) ...
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votes
1answer
323 views

Is memory usage the main cause of instance churn on Google App Engine? [closed]

I am experiencing sharp drops and spikes in instance count every 30 minutes although the request rate has been stable for 2h at 2.4k RPS. Periodically there are a lot of warmup requests after many ...
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1answer
185 views

Creating auto scale group fails, “Launch configuration name not found”

I'm trying to create an autoscale group on Amazon. The load balancer is created and is up n' running. I've successfully created the launch configuration in eu-west-1 and it shows up when I run ...
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1answer
62 views

Amazon Auto Scaling and IP access control

We hava a project where we have to access a SOAP WS that is access-restricted via IP firewalling. So each one of our machines need to be added to the firewalling rules by our clients' security team. ...
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2answers
42 views

What tooling already exists to scale down Azure Web and Worker roles during off peak times?

Having inherited a large number of Dev, Test, UAT and Integration environments I notice that a very large number of deployments are left idle during evenings and weekends. We have done what we can to ...
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0answers
151 views

SVN and NFS architecture

I have linux servers autoscaled and each mounts NFS drive on boot. The NFS is synced using SVN. When i change something in my files the changes only propagate to new servers. I have a lot of traffic ...
0
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1answer
540 views

Approach to auto scale celery servers based on broker(redis) queue size

I am working on a project which requires rolling out new celery servers if the broker(redis) queue is consistently higher than a predetermined threshold size and killing the new boxes when the queue ...
0
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2answers
70 views

AWS Autoscaling Not Launching Correct Instance

I have an instance in AWS that I set up my entire environment (I'll call it my ready instance) on and is running perfectly. I then created a load balancer (ELB) with an autoscaling policy. When I ...
3
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1answer
1k views

ELB Instance Out of service

After implementing ELB and Autoscalling on Amazon AWS. There's a wierd issue happens and we don't know either the reason or the fix. We installed Auto Scalling configuration to add instance of AMI ...
1
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1answer
80 views

Control ELB by Traffic load

We recently used Amazon AWS. Now our application is on the cloud. And we configured ELB with Auto Scalling and it works fine. We need to modify the ELB and control how it works. I checked all the ...
3
votes
1answer
209 views

EC2 Autoscale policy to terminate instances if not needed but before 1 hour

I have setup EC2 Autoscale policies along CPU monitors and it's working well. I have occasional bursts that triggers autoscale and more servers are added. If the servers are experiencing a burst ...
0
votes
1answer
138 views

Switching between ondemand and spot instances depending on spot price

We are using EC2 spot instances for crawling data. At any given time we need to have 20 instances running. We are aiming for high availability as well as cost optimization. The scheme we want to ...
0
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1answer
663 views

What will happen to my EBS data when autoscaling my EC2 instance?

I have various websites hosted on 1 same single EC2 instance so far. In the root EBS volume of such instance I have: Codes and files of the websites which change every hour if not every minute Apache ...
0
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1answer
226 views

Time between AWS Notifying of Scale Down and Terminating instance

Here is the scenario, there are multiple EC2 instances behind a load balancer. When traffic dies down, the SCALE_DOWN policy is triggered from a CloudWatch alarm. What I would like, is for the ...
4
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1answer
1k views

EC2 Auto-Scaling with Spot and On-Demand Instances?

I'm looking to optimize the cost of our auto-scaling EC2 groups by having them launch spot instances instead of on-demand instances. What I really want is to be able to keep some servers in the group ...
3
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2answers
891 views

Auto-scaling EC2 Servers and Updating Code

We've come to the point where we need to set up autoscaling for our web server and I'm unsure how to go about the process of scaling servers and updating the the existing code without remaking a new ...
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1answer
697 views

Autoscaling EC2 with NFS mounts

I'm trying to set up a shared filesystem on EC2 and I've read tutorials such as this: http://blog.ronaldmccollam.com/2012/07/configuring-nfs-on-ubuntu-in-amazon-ec2.html In step 2 it talks about ...
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2answers
142 views

AWS AutoScaling as a robust unit of deployment?

Some of our apps have a requirement that they "work most of the time". They don't the full multi-AZ & ELB treatment for high availability. The irritating thing with EC2 is that, when a single ...
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1answer
496 views

Need a recommendation for shared storage on auto-scaling ec2 w/ scalr

I have come across so many answers to this question that I am completely lost! I am moving our 2 sites to a load balanced ec2 system with scalr as our cloud manager. Now the question is coming up ...