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

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79 views

AWS autoscaling and ec2 t2

I use t2.medium as a front servers at my architecture. Usually AWS autoscaling use "CPU Utilization", but for t2 it's a bit tricky. When "CPU Credit Balance" is low, t2.medium "CPU Utilization" can ...
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51 views

Can't connect to VPN through ec2

I have created a VPC (private and public subnet) and VPN connection with the AWS wizard. Unfortunately, I can't connect to the host in the VPN outside AWS. When I try, I get a timeout. I have ...
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52 views

AWS EC2 replacement instance

I've inherited our AWS management duties for the time being and I've received a notice from AWS about some of our instances needing regular maintenance. The EC2 instances are pretty primary, a proxy ...
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42 views

AWS EC2 Instance with Windows 2008 R2 Datacenter Not Using All of Memory

I have an m1.large EC2 instance running with Amazon Web Services. The OS is Windows 2008 R2 Datacenter. It should have 7.5 GB of memory, and the desktop background indeed says: Total Memory : 7.5 ...
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19 views

Apache bad performance

I have Apache 2.4 on CentOs with mod_php (PHP 5.4). This runs on an Amazon EC2 large machine (m3.large) with a load balancer in front of it. There are 3 requests/second to a PHP file that returns ...
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105 views

failed ssh logins DOS: pam_systemd Failed to connect to system bus

After a couple of weeks of script kiddies attempting to login via SSH to my CentOS 7 box on EC2, it eventually stops responding on that port (and to http on port 80), and I have to reboot it. The ...
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86 views

forward subdomain with route 53 to ec2 instance with node js

I have node js serving both root site (non prefix) and app.mydomain with node js subdomain npm . how can I point to both of them using Route 53? as for now the root domain get request's from Route 53 ...
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78 views

Fabric: Using ssh_config settings on env.gateway

I have a relatively standard AWS setup, that looks like this: [ App server ] \ [ App server ] -- [ Dev gateway ] [ App server ] / Where the servers are only accessible over 22 from the gateway's ...
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47 views

EC2 CFN IAM: allow instances in ASG to manage their own volumes

I have an auto scaling group defined in a CloudFormation template. The launch configuration associated with the auto scaling group has an IAM instance profile attached. Is there any way to define a ...
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26 views

Multiple static IPs Amazon EC2

I want to have multiple sites with SSL on IIS (Windows 2008 R2 on Amazon AWS). I've read this other question and the documentation in Amazon where it explains how to add another IP. My question is, ...
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77 views

can't ssh on ubuntu, ec2 suddenly. stuck on “Sending env LANG = en_IN”

Suddenly I am not able to ssh (with pem file passwordless login & with password both) My pem file has not been changed, It was working fine till yesterday. Here is ssh -v output ...
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121 views

How to auto assign public IP for VMs imported from vSphere in AWS - EC2

I was trying to import a Linux VM running in my VMware infrastructure to my AWS-EC2 account using the ec2-import-instance CLI. The VM gets successfully imported to EC2, but on starting it up its not ...
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28 views

OpenSSH Won't Start on Ubuntu EC2 Instance

My Amazon EC2 instance's openssh server fails on boot ever since I scaled my instance. I have tried following these instructions here: ...
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91 views

can' t access ec2 instance for additional user with sftp or ssh - key refused

I keep getting server refused our key error with putty/public key rejected error in filezilla when trying to access my ec2instance with a new user. Access works fine for both ssh and sftp with the ...
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24 views

appropriate traffic to load test couchdb horizontal scaling

I'm designing the CouchDB backend to my web application, and I want to estimate how many GETs and PUTs per second I can achieve with a given number of instances. (Arguably I should be testing view ...
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61 views

Connect to a Server from my AWS EC2 instance

I have a app running on AWS EC2 which connects to a database in another server. The database connection Uri is as following, jdbc:XXX:172.18.2.107:3306/database This is what I got form my ...
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183 views

502 Bad Gateway from relocated instance on AWS EC2

I tried to move some instance from tokio region (which by the way, it's working normally) to sao paulo region, then I followed this basic steps to perform but when I launch the instance from the ...
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135 views

amazon ec2 - opencart seo url not working

I have installed opencart on my amazon ec2 server. I am trying to activate the seo url feature but it is not working. I have renamed .htaccess.txt to .htaccess in folder directory ...
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15 views

Cannot configure RD Gateway

I have a windows server 2012 base ec2-instance. This is joined to a domain. Have installed RDS service, but I need to make it a RD Gateway server. I was trying to configure session based desktop ...
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43 views

An ADDC for the domain could not be contacted

It's not first time I am installing AD server (2012) and connecting client to domain, but yes!! its the first time doing in AWS ec2 instances. The scenario is I have 2 instances, one with AD services ...
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70 views

How to tell if disk volume is instance store or EBS?

I have a number of volumes (same size) attached to a Windows instance in Amazon AWS. One of them is told to be an instance store. How do I tell which one? PS. testing the speed did not help, one of ...
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604 views

can't connect aws VPC private instance to internet through NAT

trying to install a LAMP stack on an aws instance in a VPC private subnet using Scenario 2 described here: http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario2.html I've set everything ...
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200 views

FreeIPA Install on CentOS 7 - “Cannot contact any KDC”

I am trying to install a new stand alone instance of FreeIPA on CentOS 7. I am doing this in an Amazon AWS EC2 environment. The install completes flawlessly every time, however, when I attempt to ...
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104 views

customize instance store Centos7 AMI

I am attempting to customize a base instance-store Centos7 AMI. Image I am using is: RightImage_CentOS_7.0_x64_v14.1.4_HVM - ami-d34b02e3 (instance store hvm) I start the instance, I customize it, I ...
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80 views

Amazon ELB + EC2 Header mismatch

Preamble: I have an AWS Elastic Load Balancer in front of a Single Amazon EC2 instance. I have 3 other EC2 instances sending requests via curl to the Load Balancer. Direct requests to the EC2 ip has ...
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138 views

EC2 instance can't connect to RDS

I have created an EC2 instance and an RDS instance. Using Ubuntu and MySQL, RDS instance is public and not A-Z. I have created a security group that allows 3306 from anywhere on both Ingoing and ...
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39 views

Can you use isolcpus or other kernel parameters in AWS?

We have recently started using cpuset for certain network intensive processes and I want to set a system-wide default for everything else so it doesn't use the designated cores. After a few seconds ...
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25 views

Mount the other half of instance store volume

I have a running c3.xlarge EC2 instance on AWS. As listed in http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/InstanceStorage.html#StorageOnInstanceTypes , it should provide 2 x 40GB SSD instance ...
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19 views

SQL Server 2012 Web uses max 4CPUs. AZ RDS allows deployment on R3.2xLarge (8vCPU) instance. Why?

According to MS documentation, SQL Server 2012 Web Ed. is limited to use 4CPUs. However, Amazon RDS allows it to be deployed on R3.2xLarge instance. BTW, R3.2xLarge offers 8vCPUs. So is it helpful ...
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121 views

Unable to open redis 6379 for inbound on AWS EC2

I have two servers on EC2. One hosting my php application and other hosting my redis server. I am managing my php session and data on redis server. So on my php server I gave the ip:port as session ...
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67 views

Elastic Load Balancer connection draining causes a blank page for some web sessions

I'm running 3 EC2 instances behind an ELB with connection draining enabled (set to 300ms). When I remove an instance from it, I can see fewer and fewer web requests in the server log until eventually ...
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68 views

Best practice of using MongoDB Replica Set on AWS EC2

MongoDB needs at least three replica set members on independent locations to work automatic failover correctly. However, some of AWS Regions (such as ap-northeast-1) have only two Availability Zones. ...
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119 views

VPN to Windows Server 2012 on ec2 not routing

I have a Windows Server 2012 instance on EC2 so I can VPN into the private network to access machines not exposed via a public IP. I can connect to the Windows Server VPN by its public IP and ...
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109 views

crontab at reboot for EC2 instance

I'm trying to mount an EBS volume after restart. It does not work. I set the mount after reboot, in the following manner: echo "@reboot 'sudo mount $DEVICE_PATH $TARGET_PATH -O noatime,noexec'" | ...
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271 views

'end_request: I/O error, dev xvda1' after rebooting AWS EC2 instance

I rebooted one of our Amazon EC2 instances after having some performance problems and had a look at the Actions > Instance Settings > Get System Log to see this: Amazon Linux AMI release 2014.09 ...
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39 views

Logging into an AWS EC2 instance from another machine in EC2

I have a few AWS EC2 instances that can SSH into each other. They are not in a VPC as this is an older AWS account and was active before VPC. One particular EC2 instance (zeta) is not able to SSH into ...
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98 views

Ansible fails to create Amazon EBS-ctorage

I have a problem - trying to automate the purchase of new EC2 instances. Here's my playbook: --- - name: Provision new EC2 instance hosts: local connection: ...
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50 views

AWS EC2 Instance Shutting Down Prematurely (Possible Xen Driver Issue)

Currently trying to run a JSON Script using CloudFormation via the AWS Console and we're coming across a very frustrating error. The Instance seems to start up, and gets past the 2/2 Check in the GUI ...
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80 views

Unable to traceroute on Amazon EC2 Ubuntu

I have setup a brandnew Ubuntu 14.04 instance, with a public IP, with a security groups that allows all inbound and outbound traffic using all protocols on all ports from/to any IP. I have installed ...
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75 views

Django/Tastypie: RDS is damn slow compared to EC2-MySQL

Initially my setup was: EC2 (Apache -> Django -> Tastypie) -> MySQL on EC2 itself. One of our API (Tastypie) does almost 80 SQL SELECT queries to fetch related resources and attributes. For local ...
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290 views

AWS EC2 instance hyperthreading

I am currently doing some performance testing of web-apps that we have moved to AWS. One of the things we have noticed is that vCPU performance doesn't seem to be nearly as good as we'd expected. In ...
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89 views

Port not opening even after adding security group rules on Amazon EC2 instance

I have an Amazon EC2 Linux instance. I recently installed SmartFoxServer in my instance. For that I needed to open 9933 port. So I just created inbound rules on Amazon EC2 Manager console website. My ...
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67 views

How can I use AWS placement groups with ironfan?

I would like to use AWS placement groups in order to decrease latency between my front-end server and back-end servers in a particular availability zone. We use the Chef orchestration layer Ironfan, ...
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29 views

Sharing between EC2 Instances not working

I want trying to setup a render farm in AWS where I created all my instances using my 'Windows 2008 Base' based AMI. I will have one manager instance which is attached to EBS drive (D drive) and this ...
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29 views

not able to map domain name 53 to EC2 instance

I am facing the issue with assigning the new domain name I brought in route 53. I followed the instructions in http://coenraets.org/blog/2012/01/setting-up-wordpress-on-amazon-ec2-in-5-minutes/ and ...
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346 views

How to deploy in amazon ec2 through bitbucket

I have a django project and have my repository in bitbucket and locally (windows 7). Now I want to deploy the changes to amazon ec2 instance (ubuntu 14.04) by doing git push and git pull. I did git ...
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81 views

EC2 Ubuntu 12.04 refuses do-release-upgrade

I'm running Ubuntu 12.04 on EC2 and I want to upgrade to 14.04. do-release-upgrade returns that there are no upgrades. do-release-upgrade -d begins to work and then halts stating: Calculating the ...
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126 views

Windows VPN Server on Amazon EC2 Instance

we are small software company. Our web/db servers were in different networks. Recently we decided to create small network on Amazon EC2 and move all those servers to EC2. I have created several ...
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69 views

EC2 and Mailgun DNS setting

I'll preface this by saying I'm very much a newbie when it comes to servers, so please bear with me. I'm trying to configure an Amazon EC2 instance to allow me to send e-mail through Mailgun but I ...
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29 views

selinux-policy update prevents ssh into ec2. Now what?

I created a new EC2 instance using the official CentOS 7 (x86_64) HVM image. I ran: yum upgrade At: Running transaction Warning: RPMDB altered outside of yum. Updating : ...