Questions tagged [amazon-ec2]

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

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Solution for PHP / MySQL website loading fast in multiple regions [closed]

I host am ExpressionEngine based website on a single Amazon EC2 instance in the US East (Virginia) region. I use Ubuntu. The website allows members to post their content, and displays it for other ...
Dimitri Vorontzov's user avatar
0 votes
1 answer
4k views

Setup Domain Controller and Active Directory on Amazon EC2 as Primary AD [closed]

I am planning to deploy an Active Directory and Domain Controller on AWS for my company. It will primarily be used for these: User Authorization (Login/Logoff Process) File Sharing / Management (...
Jeremy's user avatar
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1 answer
83 views

Do you need separate IP addresses for each nameserver for an EC2 webserver?

Do you need separate elastic IP addresses for each nameserver - say NS1, NS2 - for an EC2 webserver?
inac's user avatar
  • 519
0 votes
1 answer
108 views

Making webpages on the server accessible

I have just set up a LAMP EC2 instance using rightscale when I got to the link: "http://ec2-xxx.compute-1.amazonaws.com/" I get the standard apache welcome page. Now on my server I have the ...
one's user avatar
  • 135
0 votes
2 answers
3k views

Dig -x equivalent for AWS Route 53

I have an IP number associated with an AWS Elastic IP (EIP). I'd like to know, what DNS records in my Route 53 domain are associated with that A record's IP. In a traditional DNS service, I would ...
dmourati's user avatar
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1 answer
544 views

EC2 Instance Store to EBS Can't connect to SSH

I followed every line on this tutorial: http://webkist.wordpress.com/2010/03/16/creating-an-amazon-ec2-ebs-ami-from-a-running-instance/ to create a EBS instance using a AMI based on a Instance Store ...
James Gu's user avatar
  • 195
0 votes
1 answer
2k views

Can someone help me figure out an efficient auto scaling configuration? [closed]

This is my first time releasing a web app. I'm going to using Django with Nginx and a couple of other scripts that have been piped. I wanted to know which auto scaling strategy I can use. Right now,...
Suhas's user avatar
  • 13
0 votes
6 answers
3k views

realtime sync of files between instances

In my scenario, i have 2 ec2 instances and need to sync the files between them in realtime. Can I do this with rsync? Can anyone please suggest how to schedule a rsync?
kabeer's user avatar
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120 votes
7 answers
159k views

What Linux distribution is the Amazon Linux AMI based on?

Amazon Web Services (AWS) offers an officially supported Amazon Machine Image (AMI), but it doesn't indicate which Linux distribution it's based upon. Is the official Amazon Linux AMI based on ...
Trevor Sullivan's user avatar
89 votes
4 answers
18k views

Why is TCP accept() performance so bad under Xen?

The rate at which my server can accept() new incoming TCP connections is really bad under Xen. The same test on bare metal hardware shows 3-5x speed ups. How come this is so bad under Xen? Can you ...
cgbystrom's user avatar
  • 1,061
58 votes
5 answers
74k views

How to delete Instances in Amazon EC2 ? Change Pair Key?

How to remove Instances ? I test some Instances and now I terminate it. So, I want to remove it. I can't find delete or remove action. I just found terminate. How to change the pair key ? I don't ...
saturngod's user avatar
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50 votes
5 answers
48k views

Can't connect to EC2 instance in VPC (Amazon AWS)

I've taken the following steps: Created a VPC (with a single public subnet) Added an EC2 instance to the VPC Allocated an elastic IP Associated the elastic IP with the instance Created a security ...
Ryan Lynch's user avatar
49 votes
7 answers
63k views

How can I prevent a DDOS attack on Amazon EC2?

One of the servers I use is hosted on the Amazon EC2 cloud. Every few months we appear to have a DDOS attack on this sever. This slows the server down incredibly. After around 30 minutes, and ...
cwd's user avatar
  • 2,793
48 votes
8 answers
90k views

Why can't I connect to Amazon RDS after setting it up?

So, I just created the Amazon RDS account. And I started an instance of database. The "endpoint" is: abcw3n-prod.cbmbuiv8aakk.us-east-1.rds.amazonaws.com Great! Now I try to connect to it from one ...
Alex's user avatar
  • 8,591
46 votes
5 answers
98k views

Why can't I reach my Amazon EC2 instance via its 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 ...
Guido Anselmi's user avatar
44 votes
3 answers
40k views

What's best practice for communication between Amazon EC2 instances?

I've been setting up Amazon EC2 instances for an upcoming project. They are all micro instances, running Ubuntu Server 64bit. Here's what I've setup so far: Web Server -- Apache Database Server -- ...
ks78's user avatar
  • 849
42 votes
5 answers
104k views

Bandwidth limits for Amazon EC2

I have a micro instance on Amazon EC2 cloud. Also the instance is small and it has vary low CPU and EAM usage but it generates a lot of content, so it can be considered like a web server serving ...
Artyom's user avatar
  • 754
35 votes
4 answers
62k views

How to make EC2 user data script run again on startup?

After cloud-init runs a user data script on the first boot of an EC2 instance, a state file is presumably written so that cloud-init won't run the script again on subsequent reboots. There are cases ...
Mike Conigliaro's user avatar
35 votes
4 answers
52k views

Where does Amazon publish the range of IP addresses used for EC2 instances by region?

How can I keep updated of changes to the range of IP addresses that Amazon will use for EC2 instances. I want to add a range of IPs to my firewall settings to allow access to my 'ground based' mysql ...
undefined's user avatar
  • 654
32 votes
2 answers
33k views

AWS, Bandwidth and content delivery

My question is about Virtual Machines and delivering their content over the servers connection to the internet. I have an Ec2 windows instance, and its network connection appears to be 100mbps If I ...
Keeno's user avatar
  • 611
29 votes
5 answers
78k views

amazon linux 2 ami - aws - How to install mysql in Amazon Linux 2?

I am trying to install mysql in amazon linux 2 ami and am not able to do it. sudo yum install mysql56-server -> doesn't work amazon-linux-extras list -> doesn't list mysql I do not want ...
Jey Geethan's user avatar
28 votes
5 answers
38k views

How to download public key from Amazon AWS?

I have a running amazon ec2 linux instance associated with a keypair (p1) and I have downloaded the private key to my home desktop. Now at work, I created a keypair (p2) on my work desktop and ...
Jus12's user avatar
  • 405
28 votes
3 answers
40k views

Nginx Solution for AWS Amazon ELB Health Checks - return 200 without IF

I have the following code that is working on Nginx to keep the AWS ELB healthcheck happy. map $http_user_agent $ignore { default 0; "ELB-HealthChecker/1.0" 1; } server { location / { if ($...
Adam's user avatar
  • 515
26 votes
8 answers
50k views

Why can't I ssh into my new EC2 Instance?

I created a new instance (tiny, 64 bit AMI linux from Amazon) Created a new key pair called "mir". I downloaded mir.pem and put it in my ~/.ssh folder. I even did ssh-add mir.pem. Then I tried to ...
Alex's user avatar
  • 8,591
25 votes
6 answers
24k views

Windows Password won't decrypt on AWS EC2 even with the correct private key

I created a new Windows instance on AWS EC2, using a keypair I created by uploading my public key from my local machine. The instance launched fine, but it won't decrypt the password. It reports: I'...
Craig Ringer's user avatar
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25 votes
5 answers
86k views

Why can't I ping my freshly set up amazon web service EC2 instance?

I was following this tut on how to set up a EC2 instance on Ubuntu but qhen trying to execute ssh command on my IP address, I had an operation Timeout. So I tried to ping it but no chance neither. ...
Miles M.'s user avatar
  • 381
23 votes
9 answers
29k views

How to get Autoscaling group Instances IP adresses

How can I get private IP adresses of all the instances which are part of an AutoScaling group. I am trying to do some operation on all the instances which are part of an autoscaling group.
Ramesh Kumar's user avatar
  • 1,780
22 votes
3 answers
69k views

How to SSH to ec2 instance in VPC private subnet via NAT server

I have created a VPC in aws with a public subnet and a private subnet. The private subnet does not have direct access to external network. So, there is a NAT server in public subnet which forward all ...
jasonfungsing's user avatar
21 votes
3 answers
41k views

EC2/Route53: How do I assign my new domain name to an instance?

I have an EC2 instance. It's up and running with an Amazon IP that looks something like this: //ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com/ I am sure it works fine. I bought a domain and then set ...
KevinDeus's user avatar
  • 321
21 votes
3 answers
39k 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 ...
Hadi Salem's user avatar
21 votes
3 answers
38k views

Unable to connect to the AWS EC2 instance - "Host key verification failed"

I had set up a Ubuntu instance with a Rails package, deployed my app, and it is working fine. But when I try to do SSH, it's not allowing me for the remote login and throws errors like: Host key ...
Jeevan Dongre's user avatar
21 votes
1 answer
24k views

How can I run the Ubuntu EC2 AMI images locally?

I've downloaded the Amazon Ubuntu EC2 AMI images (from http://uec-images.ubuntu.com/releases/10.04/release/) and I am trying to run it locally on my linux desktop. Is it possible to run the AMI using ...
Abtin Forouzandeh's user avatar
21 votes
2 answers
53k views

How to specify an IAM role for an Amazon EC2 instance being launched via the AWS CLI?

I am using the "aws ec2 run-instances" command (from the AWS Command Line Interface (CLI)) to launch an Amazon EC2 instance. I want to set an IAM role for the EC2 instance I am launching. The IAM ...
Skaperen's user avatar
  • 1,114
20 votes
2 answers
15k views

ec2 rebooted my instance?

I found out that my CentOS 5 server on EC2 was rebooted, without my command to do so. I did not even log in on the day it was rebooted. When I look at 'last' in linux, it says: jeroen pts/0 ...
Jeroen Ooms's user avatar
  • 2,239
20 votes
2 answers
15k views

AMI with or without reboot on AWS EC2

When creating AMI's from an EC2 instance I always check "no reboot", I've been wondering, what are the pros/cons of creating images with/without a reboot? Does keeping the server live affect the ...
Jamie Taylor's user avatar
20 votes
3 answers
78k views

How to set up port forwarding on Amazon EC2

I have a web application running on Amazon EC2. It listens on port 9898. I can access it by entering the ip address and port number. e.g 1.2.3.4:9898 However, what I'd really like to be able to do ...
ksl's user avatar
  • 325
19 votes
3 answers
36k views

Issues with EC2 Elastic Load Balancer DNS and routing

We're trying to run a fairly straightforward setup on Amazon EC2 - several HTTP servers sitting behind an Amazon Elastic Load Balancer (ELB). Our domain is managed in Route53, and we have a CNAME ...
Cera's user avatar
  • 553
18 votes
3 answers
40k views

Where do I find my EC2 private key?

I'm trying to set up the EC2 API tools and I'm stuck because I cannot figure out where I can obtain the file pointed to by the EC2_PRIVATE_KEY environment variable (I believe I have the EC2_CERT). Of ...
user avatar
17 votes
4 answers
32k views

Fastest time to get an EC2 instance running

I am considering moving from a VPS to EC2. EC2 is elastic and so is its pricing; I could boot my instance on demand, then let it shut down if it isn't active by the end of some hourly period. How ...
Tobu's user avatar
  • 4,466
16 votes
5 answers
25k views

How to make s3fs work with IAM roles?

We are using IAM roles to maintain the machines. We now planning to mount the s3 to our ec2 instances and do the processing as per our need. We been using s3fs tool for mounting. But that doesn't ...
sriram's user avatar
  • 297
15 votes
2 answers
29k views

How to create a local backup of a remote Amazon RDS MySQL database?

How do I create a local backup of a remote Amazon RDS MySQL database? What I need to know is how to make a complete full local backup of a MySQL database (not a remote Amazon snapshot) that can be ...
djangofan's user avatar
  • 4,200
14 votes
3 answers
20k views

How do you create a zone apex alias that points to a Elastic Load Balancer in the Route 53 GUI?

I created aliases for my domain name's zone apex using the ELB CLI as described in Elastic Load Balancing Developer Guide. I also added a AAAA record using the --rr-type AAAA flag, which is not ...
Jeff Loughridge's user avatar
14 votes
3 answers
4k views

Amazon EC2 Backup Strategy

I have a couple Web server/DB server setups using Amazon's EC2. I am currently taking daily snapshots of all my system and EBS drives that contains all of my application files, DB files, source code ...
Jim's user avatar
  • 141
14 votes
1 answer
20k views

Where's my ephemeral storage for EC2 Instance

I have looked through the following questions, notably How to use "Instance Store Volumes" storage in Amazon EC2? However, it didn't answer. I created a EC2 small instance with EBS as the ...
Jason McCreary's user avatar
14 votes
3 answers
18k views

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 ...
imaginative's user avatar
  • 1,981
14 votes
1 answer
51k views

How do I link a security group to my AWS RDS instance

I have a postgres db setup on RDS. It is running great. However, I want to link this to a set of autoscaled EC2 instances sitting behind an ELB that all reside in a single EC2 security group. I've ...
nu everest's user avatar
13 votes
4 answers
1k views

Is it dangerous to reveal my EC2 instance ID?

In Stack Overflow answers (like this), I often take screenshots which include Instance ID's belonging to me. Is it a bad idea to reveal these?
user avatar
13 votes
6 answers
26k views

Setting up Amazon Cloudwatch to get an alert when you server is down

I have an instance running on Amazon EC2 that I turned into a webserver. Now I have been looking at cloudwatch, but I do not know if it is the correct tool for the job. Basically I want to get ...
Saif Bechan's user avatar
13 votes
4 answers
27k views

Allow scp/ssh for www-data user

I am on Amazon EC2 using Ubuntu 10.04.2 My web folder is owned by www-data so I want to be able to log into my server as www-data for ssh and scp. Thanks! Adding the line to my /etc/ssh/sshd_config ...
ambiguousmouse's user avatar
12 votes
3 answers
6k views

Automatically mount SSD instance storage on AWS EC2 in Ubuntu 16.04

I am using an Ubuntu 16.04 EC2 from AWS on c5d.2xlarge HW. It comes with a 200 GB SSD called /dev/nvme1n1. I am able to mount this drive using: $ sudo mkfs.ext4 -E nodiscard /dev/nvme1n1 $ sudo ...
John Corson's user avatar

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