Amazon Web Services (AWS) delivers a set of services that together form a reliable, scalable, and inexpensive computing platform "in the cloud". If you have a question about a specific web service, consider asking on its tag, e.g., amazon-ec2.

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Storing AWS credentials securely on a personal machine

How can I securely store AWS credentials on personal machines? In detail: Everybody in our team requires AWS security credentials for doing administrative tasks (credentials are separated by role). ...
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How do I attach an Elastic IP to an Elastic Beanstalk app?

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. How can I get these features ...
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515 views

Moving all internal servers to the cloud

Background One of my clients is an IT-dependent workflow-driven law firm with about 50 seats. They have been audited by one of their clients (an FSA regulated mortgage lender) and told that their ...
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1answer
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XFS: no space left on device, (but I have 850GB available!)

I'm using a combination of mdadm, lvm2, and XFS on Amazon EC2. So far, I've had success running a RAID 5 volume built from a number of EBS volumes. The EBS volumes are attached and used with mdadm to ...
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How to change assigned letter for Ephemeral drives automatically?

I have an AWS Windows box (Windows 2008 R2) with the following disks: C:\ 60 Gb (EBS) D:\ 200 Gb (EBS) Y:\ 40 Gb (Ephemeral SSD) Z:\ 40 Gb (Ephemeral SSD) Every time it boots I change ephemeral ...
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3k views

RDS Replication across regions

We are using Amazon AWS for our web services but given the recent instabilities in their infrastructure, we are trying to figure out how to run our application across multiple regions for additional ...
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840 views

Has anyone achieved Level 1 PCI compliance on AWS?

All the FAQs, documents and statements published by AWS aside, did any Level 1 merchant actually achieve PCI compliance on AWS yet? We're evaluating moving some of our services to EC2/VPC, but our ...
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Easy way to convert custom 32-bit AMI into 64-bit one?

I have customised (EBS-backed) AMI for running a demo version of an application of ours. (The AMI contains Ubuntu 11.04 with a Tomcat & MySQL setup for the app itself, and Jenkins for easy ...
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AWS EC2 and build-essential

I am trying to compile Node.js on Amazon EC2, but I can't even install "build essential". Where's the problem? Thanks. sudo yum install build-essential Loaded plugins: fastestmirror, security ...
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If I shut down Amazon EC2 instance then start it again, will everything be ok?

I have a web site that runs on an Amazon EC2 Linux-based instance, and is mapped to a regular domain name (x.com). This site talks to a database on a second EC2 instance. I need to shut down this ...
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401 views

How to address an EC2 instance from both inside and outside datacenter?

I'm trying to find a good way of being able to address my EC2 database instance from both inside and outside of the datacenter. Other EC2 instances need to be able to call into it, and other clients ...
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1answer
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Can I SSH into my Amazon EC2 server instance if I don't have .pem file from when instance was created?

I am working with some Amazon EC2 servers that are up and running, and I need to SSH into the servers. I don't have any keys that were generated when the servers were first set up (someone else did it ...
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3answers
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Forcing CloudFront to pass-through the latest HTML file from S3

Background I'm hosting a static site on S3, with CloudFront over the top. The issue I have is with my HTML files. According to CloudFront's FAQ: Amazon CloudFront uses these cache control ...
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5k views

Amazon RDS Instances: db.m1.large vs db.m3.large

Recently, Amazon announced new instance types for RDS. Currently, we are running db.m1.large, and it looks like the new db.m3.large is comparable but cheaper. We're new to AWS, so before moving ...
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511 views

Does Amazon EC2 and RDS have ECC memory?

I know that Amazon's Cluster GPU Instances have ECC memory as mentioned on their blog but there's no mention of other instance types. There's a forum post from back in 2007 that went unanswered. Does ...
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1answer
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Does anyone have any experience when it comes to speed of Amazon RDS vs MySQL on a Small server?

EC2 Small vs Amazon RDS - which is faster for MySQL? (I have one database, well-indexed and tuned. About 10,000 rows on each table.) How's the performance like?
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3answers
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How to allow elastic load balancer through port 80 in security groups?

I want to temporarily block port 80 for the outside world, but want the load balancer to pass through the firewall (via security group) so it won't see the instance as unhealthy. How can I do that? ...
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Automated snapshots of EBS-backed EC2 instance running Ubuntu

I'm running an EBS-backed instance which acts as a software development team's build server (running Jenkins and host of other services). The server is running Linux (latest Ubuntu from the official ...
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How to get the amount of free disk space with CloudWatch?

Is it possible to get the amount of free disk space (df) with CloudWatch? If so, what metric represents the free disk space?
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311 views

AWS - how to serve faster to oversea users

We have our infras relying on AWS in the us-east-1 region. (EC2, CloudFront, RDS, ElastiCache) We are now having more and more users from the APAC. Users start to complain about network speed to our ...
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EC2: multiple ssh keys for an instance?

Is it possible to create more than one private key to SSH into an EC2 instance? What's the general best practice for this? We have multiple users who need to SSH into the servers and distributing one ...
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3answers
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Is there a way to set an AWS instance's name from command line tools?

In the web console there is a field "Name" which you can edit to associate useful context with an instance, is there a way to set or retrieve this info from the command line?
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/etc/security/limits.conf soft nproc limit appears to be ignored

My MongoDB database was running into problems under load, with the following errors spamming the logs: [initandlisten] pthread_create failed: errno:11 Resource temporarily unavailable [initandlisten] ...
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894 views

What are common strategies for configuration management on EC2?

Without using a 3rd party cloud configuration service, what are common patterns/strategies or whitepapers written on the subject of configuration management with EC2? Specifically on how to configure ...
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AWS - Assign an Elastic IP to a ELB

Is it possible to assign an Elastic IP to a Load Balancer?
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How to automate an Amazon EC2 instance startup, execution of some commands and shutdown?

I need to download 100 GB of files (it’s in about 150 files) within a 7 day period before they expire. The download is rate-limited by the host so it takes MUCH longer than the theoretical transfer ...
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554 views

Cannot create a EC2 server root volume greater than 8 GB

I am trying to create an EC2 large instance. AWS claims to say I shall get 850 GB instance storage if I go for Large Instance. I configure the VM to have the Root Volume size of 100 GB. But, when I ...
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How can I access instance storage on a Windows EC2 instance with an ebs root device?

I have created an AMI, but I would like to use instance storage for some scientific programs I want to run. They basically read a bunch of stuff from disk, write it back out to disk and then ...
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3k views

How do you recover you RDS master user username?

Resetting the RDS master user's password is simple enough, but how do you find your master users username?
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AWS S3 Backup Strategies - How should I approach backing up S3 buckets?

I am in the process of building a web-app with potential for a massive amount of storage requirements which can be satisfied by amazon S3. My main concern is the usage of API keys on the server, and ...
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1answer
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Amazon SES e-mails ending in Yahoo & Hotmail Spam folders, even though SPF and SenderID and DKIM are set correctly

This is incredibly frustrating. My Amazon SES e-mails are ending in Yahoo & Hotmail Spam folders, even though my SPF, SenderID, and DKIM are setup correctly. Since this particular site requires ...
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1answer
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At what point is EBS usage the bottleneck?

I've got a site hosted on Amazon using a EC2 instance backed by an EBS volume. On the weekends, traffic spikes and I make the instance larger which helps quite a bit -- I'm no longer seeing CPU usage ...
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439 views

Running docker in VPC and accessing container from another VPC machine

I'm having issues while running docker in AWS VPC. Here is my setup: I've got two machines running in VPC: 10.0.100.150 10.0.100.151 both having an elastic IPs assigned to them, both running in ...
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2answers
407 views

Strategy for maintaining Amazon RDS instance on prod vs development

How do you folks manage your Amazon RDS instances? In production I obviously want to use Amazon RDS with a master-slave replication setup going. Unfortunately this incurs substantial costs to bring ...
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EC2 IP Address : How can a web server identify db server ip address at startup?

I have a simple 2-tier arrangement - one web server (Websphere hosted on windows), and one oracle db server. The web server needs to connect the oracle database server. I am trying to write a script ...
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Why Can't I Reach My Amazon EC2 Instance Via It's “Elastic IP Address?”

The server works fine via the Amazon assigned DNS entry, but I cannot reach it (using a browser) via the Elastic IP address Amazon assigned the box. Ping does not work either. I am trying to confirm ...
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does having dedicated instances completely prevent noisy neighbor issues?

Due to sharing of hardware, AWS instances can be prone to 'noisy neighbor' issues, where one or more of your neighbor's instances hog resources from your instance. This article suggests: The most ...
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CNAME record for Amazon S3 — any drawbacks?

I'd like to make a CNAME record for my Amazon S3 domain, to have nicer URLs. There's not much discussion of this out there on the web, and nothing at all in the Amazon documentation (unless I'm ...
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1answer
2k views

No targets available when trying to set alias target from Route 53 to S3

I'm trying to setup a simple Amazon AWS S3 based website, as explained here. I've setup the S3 bucket (simples3websitetest.com), gave it the (hopefully) right permissions: { "Version": ...
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On AWS do I have to open ports in an EC2 instance's firewall as well as security group?

If I change my SSH port from 22 to 23453, I can no longer ssh in. In more detail, I'm using a Red Hat EC2 instance on Amazon Web Services. This is the second change I've on a fresh install (first ...
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560 views

Is it feasible/common for people to use only AWS to host PHP/MySQL websites?

What are the drawbacks/limitations when compared to a more traditional managed shared/virtual/dedicated host?
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2answers
926 views

Load Balancing on Amazon (AWS) and staying up to date

I would like to have a load balancer for my site and have the site up to date. The load balancer will take the AMI I select and spin up more of those instances when processing power hits a certain ...
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4answers
1k views

Best Amazon AWS region for Australian website?

What is the best Amazon AWS region to host a website for an Australian audience? Amazon's marketing material seems to suggest that Singapore is the best place, but the ping tests I've performed have ...
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1answer
496 views

Lost passwordless sudo and no root access

I have a running AWS vm. The only access I have is using the ssh key (.pem file) to log in as ec2-user which is an unprivileged user. From there, I could user the sudo command without a password. ...
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3answers
2k views

Amazon AWS EC2 + Puppet, get Puppet to know AWS instance tags

I am having a problem with my AWS deployment, fairly new to AWS and Puppet. So coming to my question - can you distinguish puppet nodes with AWS machine tags or CNAME domains? A little background ...
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4answers
1k views

Multiple AWS instances and one database

I have a web app that lives on two AWS instances - one instance hosts the site, and the other hosts the actual database (MySQL). The instance hosting the site has an elastic IP pointing to it, which ...
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1answer
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Could not call sign: Could not find certificate request for puppet

I'm getting started with puppet on ec2 using the following guide. https://help.ubuntu.com/12.04/serverguide/puppet.html In the very last step when I try to sign the puppet client from the puppet ...
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Keep alive timeout not being respected on Amazon ELB

I'm using Tomcat 6.0.24 on Ubuntu (JDK 1.6) with an app that does Comet-style requests on an HTTPS connector (directly against Tomcat, not using APR). I'd like to set the keep-alive to 5 minutes so I ...
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5answers
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AWS: Multi-region setup using single RDS instance

I'm trying to scale our web application (PHP, MySQL, memcache) in a multi-region scheme. Currently we are using a setup with two EC2 instances behind an ELB and an RDS instance, all of them in US-EAST ...
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10k views

How to schedule automatic (daily) snapshots of AWS EC2 Windows Instance?

I have some Windows servers hosted on Amazon EC2. Some run Windows Server 2003 and other run Windows Server 2008. These are EBS-backed instances. Most of the instances also have some additional ...