Amazon Elastic Compute Cloud (EC2) provides self-service, on-demand, pay-for-what-you-use computing infrastructure resources.

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Why does my Amazon EC2 instance becomes unresponsive when the system's date is wrong?

I'm running some tests and I need to change the system's date, adding or removing some days. The problem is that sometimes the instance becomes unresponsive a while after I set the date. I get nothing ...
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65 views

Amazon EC2 instance “sudo reboot” not coming back up

I did a "sudo reboot" on my EC2 CentOS and now my instance is not coming back up! It is a web server and I know there is nothing wrong with my configs to make it not come back up! The only thing I did ...
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37 views

Amazon EC2 instance “sudo reboot” not coming back up

I did a "sudo reboot" on my EC2 CentOS and now my instance is not coming back up! Did I lose everything? How can I bring it back up? Any help is greatly appreciated.
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75 views

Examples of running VPN clients in Amazon EC2

There are a thousand examples of VPN server setups on EC2 - but what are the limitations for running VPN clients on ec2? (to an existing VPN concentrator outside of EC2, for example). OpenVPN is known ...
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364 views

nginx is running . . . but it isn't — ubuntu EC2

I set up an EC2 instance using Ubuntu 13.10 64 bit. The instance has a security group with http 80 open to 0.0.0.0/0. I installed nginx, restarted the server, and confirmed that nginx was running: ...
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84 views

Intermittent FireFox Post hangs with Apache / PHP in EC2 with Load Balancer

I have a relatively large 55K Ajax Post that is intermittently hanging in my server (Apache/2.2.25 (Unix) DAV/2 PHP/5.3.6) running in EC2 with a Load Balancer. About once every 15 posts, Firebug will ...
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50 views

Amazon ELB timeout on multiple instances but not on single instance

I have an Amazon load balancer and one EC2 web instance behind it, and websites work fine, all my websites do not require long processing time, they are just some basic PHP sites, then I spun up ...
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40 views

Postfix mailserver 550 bogus response

So I have a mail server setup on my Amazon EC2 Debian instance and it's been fine for months however recently I received this response from a customer: <user@customer.co.uk>: host ...
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334 views

Gmail rejecting IMAP calls from AWS EC2 hosted James server

I have James server (SMTP server) hosted on AWS EC2. I have small application running on this AWS instance which fetches certain emails from my Gmail account. Gmail rejecting any IMAP request from my ...
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49 views

Bootstrapped Ubuntu 12.04 EC2 instance. Where to find log?

So I bootstrapped a shell script to install and run a bunch of tasks. Looks like the it ran for the most part, but I added one part and that was formatting an extra EBS volume. Pretty ...
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91 views

Amazon EC2 Nat Instance - goes out but not back in

I've followed Amazon's steps and list what I've done. I've created 6 subnets (4 private SN1: 10.50.1.0/24, SN2: 10.50.2.0/24, SN3: 10.50.3.0/24, SN4: 10.50.4.0/24) and 2 public (SN5: 10.50.101.0/24 ...
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56 views

Issue with Setting up Amazon SES using VPS/Ec2

So, I currently have a VPS and a EC2 instance. The VPS is a completely separate company that hosts my domain, email, etc. But, I recently pointed these to my Ec2 instance as: MX Record: The ...
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88 views

How to determine if my AWS/EC2 server has been compromised / resolution?

I have recently seen an increase in network in/out activity on my server and am trying to determine if my AWS/EC2 instance has been compromised, and if so, how to resolve? In my security group I ...
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47 views

Restoring WordPress EC2 instance from snapshot results in 403 Forbidden error

This problem has been perplexing me for weeks now. Here's how the issue goes: Launch Amazon Linux 64-bit instance, successfully install WordPress, and site is active w/ no issues Create snapshot ...
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49 views

Unable to stop instance in Amazon EC2

I am developing a java web application and deploying to Amazon EC2. I have deployed with default micro small ec-2 server. Now i have to move this ec-2 server from small to large server. I have gone ...
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121 views

Can I forward my godaddy domain to Load Balancer DNS' name?

My domain is hosted on GoDaddy. Is it possible to forward my domain to LoadBalancer's DNS? Example steps: Add Domain Forwarding on GoDaddy Forward to: ...
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68 views

Weird consistent EC2 CPU spikes

One of our m1.small EC2 instances, running a Node.js web server, regularly gets some CPU spikes. It doesn't seem to matter what the peak CPU reaches, but whenever our traffic approaches the max for ...
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82 views

setting haproxy servers to use AWS public name server

I'm trying to configure haproxy to cluster a couple of mysql servers (galera cluster), but it seems that haproxy does not accept dns name in the server directive. e.g. config listen mysql ...
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140 views

Creating N EBS volumes with CloudFormation/AutoScaling

I can explicitly create an EBS volume in a CloudFormation template using a resource of type AWS::EC2::Volume. I can also create per-instance EBS volumes using BlockDeviceMapping properties on ...
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27 views

How to install latest version of ec2-api-tools?

Downloading ec2-api-tools from Amazon gives version 1.6.7.2. Following these directions to get Amazon's PPA shows version 1.5.0.0, which is so old you can't use the access key/secret access key ...
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87 views

clone/transfer EC2 instance (AMI) between AWS accounts

I am trying to clone/transfer an EC2 instance from one AWS account to another by creating an AMI on the first account and sharing it with the second account. Then I can use that AMI to start another ...
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138 views

Partition missing on ephemeral storage on ec2 after reboot (not restart)

I had a software RAID 0 on an ec2 instance. I needed to make some changes so I stopped the RAID, unmounted it, and rebooted the instance. What's troubling is, I don't see a partition for one of the ...
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33 views

Transport Large Directory Structure to AWS EC2

I need to transport just less than 6 TB of data from one Windows Server 2008 R2 (located locally) to a second instance on a customer AWS EC2 instance. The customer configuration does not allow Device ...
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44 views

Upgrading from m1.medium to m1.large amazon instance

Is there anything I need to watch out for when upgrading from m1.medium to m1.large? Is it as simple as turning the machine off, changing it to m1.large and switching it back on again?
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101 views

What exactly mean “potentially inconsistent EBS volumes” and “impaired EBS volumes”?

At Amazon doc one can read an explanation about EBS status check in abstract. I said in abstract cos they don't details what kind of tests they executed, they just mentions the fact they execute ...
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46 views

Accidentally mounted / in two places. How do I fix this? (And how do I mount it correctly to the device I want?)

I'm using a test Amazon EC2 server with a small (~10GB) disk at /dev/xvda1. I also have a block device (~500GB) attached at /dev/xvdb. I want to use the larger device (/dev/xvda1) for everything so ...
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89 views

How to deploy my new application to an existing environment AWS-EB

Could anyone help me on how to deploy an application in an existing environment. I've been given a task on how to deploy our application to an existing environment using AWS Elastic-beanstalk CLI but ...
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47 views

securing ec2 interinstance communication with ssh

I would like to be able to have instances from one of my ec2 clusters to talk to instances in another ec2 cluster in real time (not via a rdbms or messaging queue). I'm thinking the best way to do ...
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115 views

How to deal with Amazon EC2 network input bytes spikes

I have an Amazon EC2 instance which will periodically receive a spike in network input - always at around 6:45am. It sounds like exactly the same issue in this thread (Analyzing a periodic network ...
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572 views

Cant mount GlusterFS volume on EC2 client

After a few days of trial and error I have successfully created my gluster volume on an EC2 instance (a single one at the moment) and it is successfully started… [root@domU-12-31-39-10-26-7E ...
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290 views

Configuring passive-ftp on Amazon AWS with PureFTPD?

I see with Google this is bothering a lot of people, but I can't seem to get it working. Here is what I've tried, echo myip > /etc/pure-ftpd/conf/ForcePassiveIP echo "30000 30100" > ...
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102 views

Copy files from EC2 instance to remote dedicated server

I'm having trouble copying several very large sql dumps via SSH I used this command: /usr/bin/scp -P 2382 /ec2/path/file.sql root@$123.45.67.890:/remote/file/path/ And also /usr/bin/scp -P 2382 -i ...
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123 views

configure heartbeat HA on Amazon VPC instance

I'm trying to implement HA with Heartbeat (and monit) on two Amazon VPC instances. I read many articles about it and I tried all possible options I can think of. few articles I read (don't work for ...
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175 views

SSH won't work after associating Elastic IP on Amazon Ubuntu 12.04 32 bit micro instance

This morning my EC2 and elastic IP were working fine. All of a sudden, all hell broke loose and my EC2 won't access through my elastic IP anymore. When I did a ssh -vvv I get debug1: Connecting ...
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162 views

nagios volatile service and system time change warning

I have a nagios service with volatile option on (executes event handler every time it encounters a non-ok hard state). Problem is that if the event handler executes for 2-3 times (that is the expected ...
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139 views

Replacing my ec2 root esb volume resulting in no SSH connectivity

I have 2 Amazon EC2 on demand instances running. Instance A - micro - Root Device = EBS backed Instance B - large - Root Device = EBS backed Both instance are accesible using SSH. Both instances ...
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42 views

Elastic IP changed temporarily, now internal messages don't work

I recently setup virtual hosting on my ec2 instance and tried assigned to IPs to it(didn't work, switched back). However my mysql database couldn't be accessed(I fixed it) and my php mailing scripts ...
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2k views

AWS SES: “Email address is not verified” error with Postfix relay

I've setup Amazon SES, verified my domain, and have been approved for Production mode. When an email from the outside world is sent to an address in my domain, my server forwards it back out to a ...
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120 views

Command Line FTP out of EC2 to Webserver

I need some help, I'm trying to automate a folder (100 or so files) via windows Command line. I would like my EC2 windows server to go out and grab a folder from my web host Hostgator. When I ...
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181 views

Load balanced solution on EC2 with IIS app servers behind single IP address

I need to create an auto scaling, load balanced solution on EC2 behind a single IP address with IIS 7.5 as an app server(s). I've got a pretty good working setup with haproxy (as a reverse proxy) ...
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49 views

Testing web box behind a https load balance

I have a 3-tier system setup 2 Load balancers n amount of app servers database boxes / slave boxes. I have SSL setup on the load balancers. Normally when I test a specific server I change my host ...
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68 views

Route HTTP requests to subdirectory to another server

I have a situation where there is a server running IIS7 - it contains a mix of .ASP, .NET and PHP solutions in separate directories. I'd like to install a copy of Wordpress at: ...
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66 views

Strange lockups on Amazon virtual server

The server today had some difficult times - the load suddenly grows up to 5000%, but I did not find any local processes that cause extensive CPU load. But I've found following in vmstat 1 listing. ...
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98 views

Cannot see an EC2 VPN server from another EC2 instance

I'm using openVPN to connect to one EC2 instance from another. The client cannot see the server, however, despite that servers outside of AWS can see the server and successfully negotiate with it. ...
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74 views

Multiple domains going to one IP on an IP based virtual host

We just tried to do a launch and when we started changing the "a records" for multiple domains to point to the new IP. The server had one domain pointing to the IP for days and it was working fine ...
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869 views

ssh with cygwin for amazon ec2 gives permission denied (publickey)

I looked at all other posts that are similar. I'm probably missing something simple since I'm relatively new to this. I have an Amazon-EC2 instance with Amazon Linux. I'm using Cygwin on Windows 7. ...
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47 views

Compiling libraries for Amazon linux

Since Amazon Linux can't run outside of EC2 (if it can please explain) what is the closest platform that I should use when compiling code that should run on a EC2 instance running Amazon Linux? I ...
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291 views

Redirect to HTTPS from my Amazon Elastic Load Balancer

I have a rails app on 2 EC2 Instances running nginx behind an Amazon Elastic Load Balancer. I'd like to force HTTPS, which was working fine before I added in the Load Balancer. Now I can't quite ...
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574 views

nginx with django 502 bad gateway

I have a django installation on my EC2 server which sometimes is working fine. But some other times i keep getting those 502 Bad Gateway errors which don't seem to be a fault in the code because when ...
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80 views

Cannot access data from hbase with amazone ec2

I have a single node Hadoop machine in which HBase is running in the Amazon EC2 instance. Due to some reason the server got restarted. So i need to start Hadoop and Hbase again. Then it's working ...