All Questions
Tagged with amazon-ec2 amazon-web-services
2,704
questions
146
votes
3
answers
190k
views
How can I upgrade to Java 1.8 on an Amazon Linux Server?
I tried sudo yum update but it just keeps java "1.7.0_75". I need 1.8 for it to work with another application but can't figure out how to upgrade it.
Do I need to manually install it somehow? There's ...
- 1,463
125
votes
7
answers
167k
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 ...
- 2,133
91
votes
4
answers
63k
views
How to change the name and description of an AWS EC2 security group?
How do you change the name and description of a security group in AWS EC2?
My security group is named quick-start-1 (the default) and I want to change it to "HTTP, HTTPS and Limited SSH".
- 1,295
71
votes
3
answers
70k
views
Search ec2 instance by its name from aws command line tool
I have an instance named dev-server-03. Now how can I search all dev-server-* instances from command line?
I am using aws cli tool.
- 923
63
votes
4
answers
92k
views
Download SSL certificate from aws certificate manager
I am using aws certificate manager for managing SSL. Recently I purchased a wildcard ssl *.example-private.com Now I need that SSL certificate to deploy on enterprise git instance on aws.
How can i ...
- 1,587
61
votes
4
answers
46k
views
Multiple EC2 security groups - permissive or restrictive?
What happens when I assign multiple security groups to an instance? Is it permissive in the sense that the traffic is allowed in if any one of the security groups allows it. OR is it restrictive in ...
- 865
58
votes
2
answers
57k
views
Are EC2 security group changes effective immediately for running instances?
I have an EC2 instance running, and it belongs to a security group. If I add a new allowed connection to that security group through AWS Management Console, should that change be effective immediately?...
- 3,061
57
votes
7
answers
67k
views
How to delete EC2 AMI
I know that the command ec2-create-image instance-id will be creating an image of the ec2 instance, creating snapshots file and registering as an AMI. But what is the equivalent command to delete the ...
- 769
51
votes
5
answers
132k
views
How to install Docker on AWS EC2 instance with AMI (CE/EE Update)
What is the current way of installing Docker on an AWS EC2 instance running the AMI?
There has been an announcement of Docker Enterprise Edition and now I want to know if anything has changed.
Until ...
- 692
50
votes
5
answers
49k
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 ...
- 603
47
votes
5
answers
100k
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 ...
- 573
35
votes
4
answers
53k
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 ...
- 654
35
votes
2
answers
48k
views
Fundamental difference between t3 and t3a EC2 instances
Both T3 and T3a instances offer the same configuration, CPU credits and network performance. The only difference that I find is T3 uses Intel processor while T3a uses AMD processor, while both are ...
- 803
34
votes
3
answers
66k
views
Cannot mount an existing EBS on AWS
I tried mounting an existing EBS Storage (which has data) to an instance, but it keeps throwing this error.
mount: wrong fs type, bad option, bad superblock on /dev/xvdf,
missing codepage or ...
- 343
33
votes
5
answers
50k
views
Nginx set_real_ip_from AWS ELB load balancer address
I have a set of Nginx servers behind an Amazon ELB load balancer. I am using set_real_ip (from the HttpRealIpModule) so that I can access the originating client IP address on these servers (for ...
- 640