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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Is there a way to get tcp retransmit count PER PORT/SOCKET?

We hit an issue with one of our Kafka brokers (running over AWS EC2) suffering from many TCP retransmits. We'd like to know which of the TCP connections it has open suffers from this. Is there a way ...
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18 views

Which EC2 Instance to hash a large amount of 25gb files

I have an EBS (elastic block storage) on AWS with large amount of 25GB files (1000). I would like to calculate a SHA256 sum for each file. Which EC2 instance would be the best for such task (cpu ...
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29 views

Issues connecting to aws ec2 instance behind eip

I have an ec2 instance on which I'm running a dev server via parcel index.html --host 0.0.0.0 that ultimately listens on 0.0.0.0:1234. Before creating and associating an eip to my instance, I wanted ...
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Is it safe to allow inbound 0.0.0.0/0 on EC2 security group?

I created an EC2 instance on AWS, and I was assigned a default "security group". I understand that this acts as a virtual firewall for my server. I had trouble connecting into this EC2 ...
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28 views

Is it possible to install Jitsi meet on my existing EC2 instance?

I have decided to install jitsi meet on AWS. I have an an elastic beanstalk site with [ Python 3.6 running on 64bit Amazon Linux ] platform. The EC2 instance is t2.micro, but in production I will ...
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15 views

Can't RDP Into EC2 After Running Systems Manger Command

I ran a very simple powershell script (setting up odbc) on a bunch of EC2 instances using AWS Systems Manager. The script worked but now I am unable to RDP into any of the instances. I have tried ...
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1answer
53 views

Unable to resolve postfix connection timed out on all outgoing [closed]

I have been beating my head over this for a while now. I've been all over the internet and have read this post and this post regarding similar issues. However I cannot seem to resolve this issue at ...
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22 views

How can I get my webserver to load content from a secondary server securely? [closed]

I have two AWS EC2 servers: one is an apache webserver and the other is a grafana server which serves data to the webserver. My problem is that when accessing the webserver via https, no content from ...
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15 views

Tomcat spontaneously updated when spinning up an AWS EC2 instance. What just happened?

I am once again attempting to get our development AWS box switched over to Let's Encrypt. This time, I've managed to get the httpd server working with the Let's Encrypt cert. And this time, I've even ...
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1answer
30 views

Let's Encrypt problems with Bitnami stack and Lego, on an Amazon Linux (not 2) instance

We have an Amazon Linux (not Amazon Linux 2) instance, running a fairly old Bitnami Trac/SVN stack, and also running a Tomcat server. It has two instances of httpd: the one that's part of the Bitnami ...
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1answer
38 views

“edit health check” is greyed out on AWS EC2 Load Balancers

The default AWS EC2 Load Balancer Health Check hits "/" but I'd rather have it hit somewhere where. In the Load Balancer settings the "edit health check" is greyed out and I'm not ...
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25 views

Laravel events behind load balancer - how to make the event visible to all the servers in the autoscale group

I have an application running Laravel 6.1. There are clients which connect to it via laravel websockets and listen for events. I have an external service which sends post requests to this server which ...
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1answer
35 views

How can I use provided keys to get root shell access?

I have been given values, for an AWS instance, for the keys of AWSAccessKeyId and AWSSecretKey provided in the hope that I may be able to do some stuff with Apache. Is there any way, on this ...
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1answer
22 views

Setting up autoscaling based on network throughput

I need help in setting up autoscaling based on network throughput. Our front instances are placed inside an autoscaling group. We want the number of instances to increase as a function of network ...
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1answer
47 views

Application stop/start during EC2 autoparking [closed]

I need to autopark EC2 instance on weekends, this requires stopping application during shutdown and starting the same on EC2 startup on Monday. How do I and where should I put the stop/start ...

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