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

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Why is there a delay with executing queries on my RDS instance

I have an application running on an ec2 m3 instance and mysql running on an dRDS instance. They're both in the same, region, VPC hwoever they appear to be in different availability Zones. The issue ...
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81 views

how to install bittorrent sync on amazon ec2 using nginx

I have been trying to install and configure bittorrent sync on ec2 instance running ubuntu 14.04 and nginx. I have followed this article https://www.digitalocean.com/community/tutorials/how-to-use-...
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51 views

auto instance type changer for amazon ec2?

Basically, I'd like to take large and x-large instances on EC2 and have them scale down to smalls during the late hours and on weekends automatically. A few minute downtime wi. I think this would ...
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2answers
132 views

Ubuntu 14.04 HVM on EC2 t2.medium

I've searched everywhere but can't find a definitive answer: Is there an official Ubuntu 14.04 AMI for HVM that runs on T2.medium? (Or T2.any, actually) It looks like the answer is "no". So the ...
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11 views

Linux “free” command gives different answer than AWS Memory Metric [duplicate]

When I run a "free -om" on our Linux server (hosted on Amazon), the total available is 7,483 MB and the used is 7,125 MB for a 95% usage. But the Amazon MemoryUtilization statistic shows 73%. Why the ...
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1answer
42 views

Handling highly CPU intensive process on server

I have a Windows server machine on Amazon EC2 (m4.2xlarge) which handles web requests, does some processing using an app A and returns the results. Problem is, this app A is highly CPU intensive and ...
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1answer
66 views

Amazon EC2 Snapshot corrupt

The snapshots for one of our AWS volumes are corrupt. We use these snapshots as backup, and in the past they have been a great help. (NB: This is not our only backup method!) A corrupt snapshot is ...
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33 views

How can I set up mongodb to scale it quickly on AWS

I want to deploy a database using mongodb on AWS, and I think this database will receive a lot of data making necessary to think on the possibility that one server is not enough, so my questions is: ...
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1answer
53 views

Unable to access Amazon EC2 Centos 6 web server with Elastic IP

I'm new to linux and AWS. What I've done: 1. I've setup a Centos 6 instance from the AWS store. 2. I just installed the web server and configured the web server with the basics. 3. I've setup the ...
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1answer
44 views

How to set a timezone of an E2 instance?

I have a Ubuntu server on Amazon AWS EC2. When I log in there, I see there the following system information: System information as of Mon Apr 11 06:42:30 UTC 2016 I am currently in LA, CA - so here'...
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90 views

Is there a performance impact to using Round Robin DNS with many offline endpoints?

I'm currently running a MeteorJS application on Amazon. MeteorJS has a plugin that allows each server to act as a load balancer or a worker for said load balancers. I can spin up any number of workers ...
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36 views

Elb healthcheck fails for Https

Im using a url for ELB healthcheck in AWS. This health check is working with Http:1140/<myurltoapplication> and the attached Ec2 Instance were showing as Inservice but when i use Https:...
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49 views

What could cause system failure in sysctl and how to test values safely?

On AWS ec2, ubuntu t2.micro. I tried implement suggested improvements in sysctl listed here: https://gist.github.com/devster31/5900ab23b50a5a57f025#file-sysctl-conf and also added from other ...
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1answer
25 views

AWS: By what IP address should I reference on an EC2 instance where is running Redis?

I have 2 EC2 instances - on one is the production app, on the other one is Redis. I connect from the first one to Redis. This is how I set Sidekiq: Sidekiq.configure_server do |config| config....
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31 views

open_file_cache causes slow response every x times

I'm testing a server on t2.micro ec2 I set this in nginx.conf open_file_cache max=2000 inactive=20s; open_file_cache_valid 60s; open_file_cache_min_uses 5; ...
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1answer
166 views

I can not attach additional network interface to an existing amazon EC2 instance

I need three network interfaces in one instance for my work.By default there is one eth0 but I want to add eth1 and eth2 in an instance. I created network interfaces using the same security rule that ...
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25 views

ECS VPC and EC2 Classic, how do they talk?

say that we have a number of instances on EC2 Classic (without a VPC) and a number of instances within a VPC. The Security Group on the EC2 Classic machines allow TCP only for all the machines within ...
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28 views

Why isn't my EC2 Instance online after reboot? [duplicate]

I rebooted my Amazon EC2 Linux Instance today, though Amazon's AWS website. Now if I go to my website Safari says it can't find the server, AWS says my IP has stayed the same. What is wrong here? ...
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25 views

amazon EC2 network connectivity setup

I have two VM's on an amazon VPC (same region/availability zone) - they have the same VPC and subnet ID. Should I be able to use the private IP address from one VM to another (as is) or do I need to ...
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12 views

Ofbiz Ubuntu Server Vulnerability [duplicate]

My EC2 Instance is running ubuntu 14.04 and apache ofbiz-14.02. I found a python file was uploaded to server in ofbiz installation folder which I highly suspect it is the fraud by ofbiz which allowed ...
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36 views

AWS Elastic Beanstalk - Node not found after creating NodeJS instance

Using AWS Elastic Beanstalk I chose to launch an instance that runs NodeJS. EC2 instance launched but when I check what version of node is running I get this: node --version -bash: node: command ...
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33 views

New EC2 instances unreachable when deployed to Ireland

I am new in AWS. I have a few running EC2 instances in Virginia without any issue. Those where created mostly by previous sysadmin I only added 2 extra machines. Now I decided to start a few VMs in ...
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115 views

Whitelist or disable rate limit of CloudFlare IPs for AWS EC2

I have two AWS EC2 instance in Sydney, serving sites sitting behind CloudFlare. I'm not using ELB. Over the last week I have started seeing CloudFlare serving 522 Timeout errors fairly regularly. ...
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2answers
87 views

Problems on migrating Parse.com app to AWS EC2 Ubuntu

I have an EC2 machine with Ubuntu installed on it. On the machine, I have installed Node.js, MongoDB, and Github version of Parse Server. I have created a database called euro. In this database, I've ...
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56 views

nginx port 443 access denied

I am trying to use ssl on nginx /django in ec2 . This is the config server { listen 443; ssl on; ssl_certificate /apps/cert-chain.crt; ...
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53 views

How to get a static IP for an EC instance? Or, how to use

I am just setting our Rails app on Amazon AWS. We have 2 EC2 instances, one for the Rails app, the second one for Redis. And then Amazon RDS for MySQL. When I connect our Rails app with Redis, I need ...
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1answer
52 views

AWS EC2 and OpenVPN

I've been trying for a few hours to get OpenVPN working with AWS EC2 without any luck. Its the same setup as anyone would think of: Openvpn running on a server to gain access to resources within the ...
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120 views

AWS EC2 - Clone Windows Server Machines That Are Domain Joined

Firstly, I am using these as a base guide: http://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/ami-create-standard.html http://reduktor.net/2014/09/autoscale-ec2-instances-ad-aws/ Secondly, our ...
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1answer
59 views

Only allow access to a port when connected to VPN

I am running a Centos 7 server with OpenVpn on an amazon ec2 server. How can I configure it to only allow access to ports 2087 and 2083 when I am connected to the VPN, but not when I am not connected. ...
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4answers
196 views

How can I set AWS EC2 TimeZone?

I have two EC2 instances operating in the Oregon location (us-west-2c). Each of these when I issue the command date returns a value 7 hours ahead of what I would expect. I have tried adjusting the ...
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39 views

Proper way to set limit in mongodb on log files

It more beginner question. I trying to set limit on mongo log file in AWS linux instance. I found some question that was asked here. And tryed to do that as was suggest from someone for mongo 3.0. ...
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21 views

Amazon Ec2 Data Transfer Out vs Data Transfer In

I have read similiar questions , But I am not getting any answers.I am planning to host a site with domain name at EC2.I am using https://calculator.s3.amazonaws.com/index.html to calculate my price. ...
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2answers
99 views

Static Public IP Address on Amazon EC2

I am running Ubuntu on a Amazon EC2 Server. I have a Public IP Address (52.38.20.76). I am unable to bind the public ip address to UDP Port: udp listen 52.38.20.76:3478: Cannot assign requested ...
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28 views

IPsec: hide private IP behind Gateway IP

I have an IPsec Gateway to a customer, and the VPN tunnel is up, the problem is that they don't allow me to use my private address because it used by another VPN they use. Our gateway is an EC2 ...
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1answer
101 views

Automatically start an AWS EC2 instance from network request (wake-on-LAN)

I'd like to start an EC2 instance on-demand, and to take it down when it is idle for some period of time (e.g. no network activity for >= 1 hour), but I can't tell what a standard way of doing this in ...
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12 views

Amazon EC2 instance lacking libraries when installing WAMPP server

PROBLEM I've been using Amazon EC2 for the past six months and once in a while I need to create another instance. I'm not a Linux user so I always go for the Windows Windows_Server-2008-SP2-English-...
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41 views

Amazon AWS load balancer sending me to wrong instances

I'm very new to AWS, and am trying to forward internet-facing traffic to two EC2 instances that are up and running with a load balancer. I already have one LB running (let's call it the "first" LB) ...
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16 views

aws ec2 instance memory utilization in cloudwatch

I have been trying to get memory utilization for aws ec2 instances through an IAM role with permissions to read and write memory utilization metrics to cloud watch. So can any one help in creating a ...
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1answer
155 views

Route53 not resolving domain name to an ec2 instance

Elastic IP associated with an EC2 instance I had made a transfer of domain name from one aws account to a another, the domain name worked with my previous account and it resolved to an S3 bucket ...
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86 views

Too Many database connections on Amazon RDS dropping connection

I need to import a large user base in my application. But while stress and load testing I found that, after 200-300 concurrent requests, mysql starts rejecting the calls and gives the below error. ...
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1answer
24 views

AWS: How can we avoid EBS outages on a constantly updating ec2 files (ie, not a static AMI)

Recently we experienced Ec2 downtime due to AWS EAST outages. I was told that only RDS allows "multi-az" failover, and they have no plans for that feature for EBS storage. So the question is now: ...
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1answer
116 views

Running nginx on AWS is sending back 'ERR_CONNECTION_TIMED_OUT' responses

I have installed nginx on an Ubuntu AWS (EC2) node and confirmed it is running via ps -aef | grep nginx. In the server section I have: server { listen 8080; server_name ec2-<blah&...
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1answer
21 views

Wordpress - images not syncing in AWS EBS

I think I know the answer, but I'd like to confirm. I've a 2-servers load balancer that's hosting a Wordpress website. When the content managers create new content, specially IMAGES: intermittently ...
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39 views

My server went offline only for few regions?

I am using Amazon AWS service for hosting my website, as of my website is hosted in EC2 free-tier with 1GB ram only. It has been working fine for a while, but today suddenly my website was not ...
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78 views

Copying an EBS Snapshot to S3 for low-cost storage

Goal: Be able to copy an EBS snapshot to S3 and have it be treated like an arbitrary object that I could download to a local on-prem machine if I so wished. I understand that EBS Snapshots are ...
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44 views

How to Export Amazon EC2 Instance to Local Server running Xen Project Hypervisor

I'm interested in the possiblity of exporting an AWS EC2 Instance running linux OS to completely open source Xen Project Hypervisor ( See http://xenproject.org/ : Also Just to be clear this is NOT the ...
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17 views

MariaDB on Amazon RDS - Initial setup user grants and permissions

I'm trying to learn more AWS, and have an EC2 setup and an RDS setup running MariaDB. When I created the RDS instance, it asked for user/pass for the initial user, and created 'rdsadmin'@'localhost' ...
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72 views

Programmatically Check AWS EC2 CPU and Memory usage

Does boto3 make it possible to access EC2 CPU and Memory usage? I looked here, but couldn't find anything in the docs. How do I programmatically check memory and CPU usage on an EC2 server running ...
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1answer
34 views

After change, puppet now runs as the “ubuntu” user, and auditd is freaking out

This is a very strange question and I don't even know how to Google for it, so I'm posting here to see if anyone has encountered this sort of situation before. I have multiple Ubuntu 14.04 systems ...
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2answers
111 views

Amazon Lambda for video and image processing?

The service I am building the architecture for has a video processing part in it. Basically, some people can upload videos (stored in S3) that will be split into frames with high resolution. From ...