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

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Windows Server 2012 R2 Windows update process running even though Automatic updates disabled

I came in this morning to a catastrophe as all our servers (AWS EC2 boxes) were pinned at 100% cpu. I remoted on to one of the machines to grab the iis logs and noticed in task manager that the ...
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10 views

Jsp on Tomcat https port displaying incorrectly

I have a tomcat 8 server with http and https ports. All the jsp files run fine on http, but on https the jsp tags are getting output to the page and I'm seeing something like this. <%@ page ...
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10 views

Websocket proxy on Apache connecting, but not returning data to client

I've almost got a working websocket to share port 443 with both WSS and HTTPS requests via Apache's mod_proxy module. The websocket client (in a browser) shakes hands, and connects. But then the ...
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10 views

How to add Virtual host on ec2 wiith Apache 2.4.18?

I'm trying to domain to point specific document root of EC2 instance. I've set Route 53 and and also set DNS to domain. Now domain points fine. I have also added host to host file of server. Now I ...
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25 views

How to keep ec2 instance running in auto-scaling group for at least an hour?

In ASG it makes no sense to terminate an on-demand instance until it runs (1, 2, n) hour(s) 59 mins because you pay for time to full hour anyway. How to configure termination to make sure that billed ...
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9 views

How to update a running CoreOS instance's user-data through AWS CloudFormation?

I have a running CoreOS instance triggered by AWS CloudFormation. I updated the CloudFormation template via CF designer, but found out that user-data of the existing instance was not updated. Is there ...
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33 views

Difference in telnet of amazon ec2 instance using internal and public IP

I have a 4 node hadoop cluster on ec2. We have configured Hortonworks Hadoop (HDP version 2.4) through Ambari. I have opened all traffic for our all four instances internally and the office external ...
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15 views

Does Data Pipeline supports schema transformation/evolution between RDS postgrey and amazon Redshift? Does it alter tables in Redshift accordingly?

I see Redshift is used as a data warehouse infra for large data set and I want to load postgrey sql data to Redshift for analytics. To copy the data I followed script method. What my script does is? ...
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20 views

AWS EC2 Policy - Describe own properties

When creating AWS Policies, is there a way to create a policy that, when assigned to an EC2 Instance, allows querying its own tags without granting access to other instances tags? Is there a sense of ...
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34 views

How to restrict access to EC2 from outside but allow from Elastic Beanstalk instances?

This is the situation: We have an EC2 server which runs Elasticsearch and an Elastic Beanstalk (EB) environment. They both are in the same VPC. This is my goal: Allow access to EC2 (9200 port) only ...
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21 views

IPsec with EC2 client and Elastic IP, but nat_traversal=no

After researching this quite a bit, I feel I may be asking the impossible here, but I thought I'd give it a shot. I'm trying to configure an Openswan IPsec client on an EC2 server (inside VPC, if it ...
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23 views

Elastic IP intercepting DNS request

I have a machine on EC2 which has an elastic IP assigned to it. I ran the following command on it to listen to udp port 53 nc -u -l 53 I then ran from a local machine (not on ec2): nslookup blah....
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14 views

Use EC2 instance as proxy to client's VPN

I have a client who has given me access to their database over a VPN. I need my web application to also connect to the same database. My current approach is: Create a new EC2 micro instance (...
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7 views

cloud-init fails to reboot server

I am launching CentOS 7 EC2 instances in AWS and have the following cloud-init config: manage_etc_hosts: true package_upgrade: true final_message: "The system is ready after $UPTIME seconds." ...
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15 views

AWS Windows SQL EC2/EBS application consistent snapshot

Has anyone found a way to take a EBS snapshot for a Windows Server that maintains Application Consistency? In my case it's with SQL and I'd like to maintain SQL app consistency. Either via quiescing ...
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18 views

Best practice/way to manage Elasticsearch cluster nodes in EC2 cloud with Ansible

I have to deploy cluster for production environment in EC2 cloud and want to be able to: 1. Remove/Add nodes from/to cluster 2. Assign roles to nodes (dedicated master node, data node, and client ...
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66 views

AWS hosted website: Connection Reset & Connection Timed Out Errors

I am facing an issue on my website since the last one month. There are intermittent 'Connection Reset/Connection Timed Out' errors. Screenshot: Sometimes the website works fine, most of the other ...
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46 views

Roundcube: AUTHENTICATION PLAIN: Authentication failed

I installed Postfix, Dovecot, Roundcube, Postfixadmin on Amazon EC2 Linux. I configured Postfix, Dovecot, Roundcube and Postfixadmin one-by-one, and I can create new mailbox via Postfixadmin. However,...
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28 views

AWS private hosted zone setup

I'm trying to set up a pair of VPC peers on Amazon. One of the VPCs has been in use for some time, and the other is a new VPC I've just set up. As part of this effort, I've associated an existing ...
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14 views

How to upload a certificate to Amazon ELB?

I've generated the pem files for a new certificate which we recently purchased from comodo, using this link as a guide: "https://guillaumemaka.com/2015/05/06/install-your-comodo-certificates-to-amazon-...
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60 views

Shrink aws ec2 instance root volume (ubuntu 14.4)

I read from some link and applied these things lsblk xvda 202:0 0 32G 0 disk / = this disk attahced to new instance from old one xvdb 202:16 0 80G 0 disk /mnt xvdc 202:32 0 80G 0 disk xvdg 202:96 0 ...
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22 views

samba - EC2 instance - Samba share fail

I have two EC2 instance Windows server with ip : xxx.xxx.xxx.xxx Linux server with ip : yyy.yyy.yyy.yyy I also install and config samba server on Linux server ,smb service start normaly On Linux ...
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36 views

Shrink Disk aws ec2

I used this link for shrink Volume. (Ubuntu 14.4) https://www.thatsgeeky.com/2011/11/shrink-ebs-root/#comment-446979 I have completed all the steps I used dd command and 13 GB data copied on /dev/sdg ...
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36 views

How to configure ELB load-balancer over HTTPS for two sites deployed to the same pair of servers?

I would appreciate immensely if you shed some light into what we might be missing or doing wrong. I am not completely in charge of the configuration, and I'm not an expert on the subject, but have ...
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25 views

Slow file transfer using eclipse Saros RTC plugin with an openfire xmpp server

I set an Openfire xmpp server on Windows Server 2012 R2, using Amazon ec2. When trying to share file over an IM client (such as Psi) the file transfer speed between two clients can reach over 1Mb/s, ...
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25 views

Getting a custom package to install properly on Elastic Beanstalk

I'm trying to get an elastic beanstalk worker environment set up, but one of the packages in the project's requirements.txt file comes from a private pypi server that I've got set up on EC2. I can ...
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48 views

Configure SFTP with OpenSSH and an AWS S3 Bucket mounted via S3FS on Amazon EC2

How do I allow multiple SFTP Users with S3FS and OpenSSH? Everything works, except SFTP Users don't have permission to write to their Chrooted Home Directory: remote open("/some_file"): Permission ...
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15 views

Webserver failed after restart

I run my web server in AWS on Centos 6.3 version. Recently I had a restart, After then,No response from a web server when I pinged. I have already allowed HTTP port open. Still I don't get a response. ...
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94 views

EC2 Cloudformation - userdata using powershell to retrieve powershell scrips from GitHub

I have a AWS cloudforamtion - whih build my entire VPC with subnets etc - within this CF builds a windows 2012 server - we want to bootstrap this server under user data so it become a domain ...
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25 views

Amazon ec2-bundle-vol - unbootable image

Here are the steps I've done: Source: Enterprise Linux 6 running on EC2 Target: Centos4 Image to run on EC2 Created a new 10GB volume, with ext3 FS and mounted on /centos4 Created directories for ...
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103 views

clamav installation with pcre in Amazon Linux

When we install ClamAV in our Amazon Linux ElasticBeanstalk instance with yum install clamav it gets installed without PCRE support, although the libraries are present in the instance. LibClamAV ...
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19 views

Tomcat instance inadvertently down in amazon ec2

I am running a tomcat instance in my ec2-instance, and it is frequently down for some reason. I checked the logs at {tomcatinstance}/logs/ , like catalina.out, localhost*.log, myapplication.log; but ...
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11 views

why is ifcfg-lo renamed to vmimport.ifcfg-lo when importing a linux image to AWS EC2?

I notice that when importing a linux image to EC2 via vmimport, the file /etc/sysconfig/network-scripts/ifcfg-lo will be renamed to vmimport.ifcfg-lo, which results failure in local traffic, i.e. you ...
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75 views

AWS Encrypted EBS Boot Volumes for Windows Instances

Is it possible to create an encrypted ebs boot volume for a windows ec2 instance? This AWS example shows how to copy an unencrypted boot volume, creating an encrypted boot volume: aws ec2 copy-image ...
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44 views

Unable to RDP into new and old Windows instances

Since this morning, I'm unable to RDP into my new and old Windows EC2 instances. Below are the things I have tried already: I've tried creating instances using: a. Windows Server 2012 R2 Base b. ...
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26 views

How can I copy an AMI between regions in AWS?

We are having difficulty copying an AMI we have created in our California VPC to our Oregon VPC as the AKI and ARI are not available in Oregon. The AKI/ARI we are using in California are as follows. ...
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26 views

Auto associate an elastic ip to a ec2 instance started by ecs task

There is a way to auto associate an elasticip to an ec2 instance that was started by an ecs task? I'm trying to create a mongodb cluster with replicaset (3 nodes) and I would like to "plug" a new ec2 ...
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22 views

AWS EC2 Instance Metadata service fails to respond

Environment, system details, and tools: AWS EC2 EC2 Instance Metadata service (i.e. http://169.254.169.254/latest/meta-data/) Cloudwatch wget bash Ubuntu 14.04 Has anyone ever seen this? We have a ...
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53 views

Is it Possible to Configure Receive-Side Scaling on an EC2 Instance Running Windows Server 2012 R2

Currently, I am experiencing some problems on getting a server to run efficiently on an EC2 instance. On my local machine everything runs as expected, but on AWS the servers experience some latency, ...
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26 views

Amazon EC2 openVPN instance connection issues

Currently trying to connect to an openVPN server set up on an EC2 instance that is also running a web application. My client establishes a connection with the server and I can ping the gateway (10.8....
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39 views

ERR_CONNECTION_REFUSED Amazon EC2 instance with node.js backend

I have a website running in Elatic Beanstalk. In default-environment url, it is working totally fine. But, when I try to access it with my domain from GoDaddy it is showing ERR_CONNECTION_REFUSED. I ...
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28 views

Webserver always too slow in AWS EC2 instance

I started a simple python server on port 4444 in one of my ec2 instance.and tried to access it by curl. It takes more than 5 seconds for server to respond. Below is the tcpdump output on port 4444 ...
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29 views

Can't connect Cisco 2621 to AWS EC2 Openswan site to site vpn

I am configuring Site-to-Site vpn between my home Cisco 2621 router and Amazon EC2 instance running openswan. I keep on getting the following message on the openswan server: " NO_PROPOSAL_CHOSEN " My ...
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33 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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48 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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30 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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30 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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100 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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39 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 ...