Questions tagged [amazon-ec2]
Amazon Elastic Compute Cloud (EC2) is a cloud-based computing platform.
486
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How to sync an Ubuntu machine inside AWS using NTP
I have an Ubuntu instance inside AWS, which communicates with a third-party instance, also in AWS. I would like to ensure my instance's system time matches their's as close as possible.
They have told ...
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93
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port 22: Connection refused, but only 60% of the time
I am running this:
ssh_command = f'ssh -vvv -o StrictHostKeyChecking=no -i {private_key_file} ubuntu@{public_ip}'
# Use os.system to execute the SSH command in a subshell
os.system(ssh_command)
...
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0
answers
98
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Ubuntu Pro on AWS | Temporary failure in name resolution
I created a new EC2 instance with Ubuntu Pro 22.04 image. After 1st access, I updated system packages and Audited/fixed using usg command.
After usg fix command, I rebooted the system and upon 1st ...
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1
answer
192
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AWS userdata does not run on custom Ubuntu AMI
I've created a custom Ubuntu ISO with Autoinstall and userdata to set up a virtual machine (VM) in our VMware setup. This VM is then converted to OVA format, uploaded to AWS S3, and converted to an ...
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101
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AWS EC2 Ubuntu Instance tightvncserver with RealVNC on Win11Home
I've followed the tutorial step by step
Ubuntu VNC on AWS EC2
ubuntu@ip-172-31-17-214:~$ uname -a
Linux ip-172-31-17-214 6.2.0-1015-aws #15~22.04.1-Ubuntu SMP Fri Oct 6 21:37:24 UTC 2023 x86_64 ...
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0
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234
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Deploying multiple flask app aws + gunicorn + nginx
I am trying to deploy multiple Flask applications in a AWS EC2 without success :(.
I'm following this tutorial, the steps seems to be simple enough, however I haven't managed to make it work. This is ...
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0
answers
86
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Could not install packages due to an Environment Error: [Errno 28] No space left on device
I am trying to install the terserflow. I have a t2.xlarge instance type but every time I get an error.
Can you please help me with how much storage I have to take?
ERROR: Could not install packages ...
1
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1
answer
893
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Cron not working in the new EC2 instance. If run manually then it's working
I have set up a new EC2 instance. Everything is working perfectly. Now this morning I have set the cron and below is an example of cron
*/5 * * * * /usr/bin/php https://www.xyz.in/api/cron/index.php
...
1
vote
2
answers
222
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Partition UUID was changed automatically
I have an EC2 running on AWS cloud with the following specifications:
Operating System: Ubuntu 22.04.1 LTS
AMI ID: ami-07651f0c4c315a529
AMI Name: ubuntu/images/hvm-ssd/ubuntu-jammy-22.04-amd64-server-...
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732
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setup cuda , Cudnn nvcc version 11.8 in AWS ec2 Ububtu 22.04 instance
Trying to setup Cudnn with nvcc --version 11.8 in EC2 g4dn UBuntu 22.04 LTS with T4 GPU
setps followed .
sudo apt update && sudo apt upgrade -y
sudo apt install nvidia-driver-535
sudo reboot
...
1
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1
answer
4k
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Server refused our key - No supported authentication methods available (server sent: publickey) - Permission denied (publickey): Ubuntu server
I have an AWS EC2 instance running. I was able to connect using my chomed (-r--------) keys using MobaXTerm and SSH (Ubuntu for Windows) (.pem key) and putty (.ppk key).
I'm also working on the server ...
0
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0
answers
106
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Upgrade to Python3.9 cannot ssh to the Ubuntu EC2 instance
I'm creating a custom AMI using packer and ansible. The base AMI is an Ubuntu 20.04 provided by the Canonical and it's customized using an ansible playbook.
I'm installing python3.9 and setting it as ...
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246
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How to fix Trojan:EC2/DGADomainRequest.B
I have an EC2 instance which had some WordPress websites. My Ubuntu version is 20.04. A few days ago they were affected by malware and I have removed all malware from these websites, but in my AWS ...
0
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1
answer
185
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AWS EC2 ubuntu box authentication by using Azure AD
I need your help to integrate user account on AWS EC2 ubuntu box by using Azure AD Credentials.
We have an azure account where we have created users which in used by email and other SSO services.
we ...
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0
answers
299
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Header set Access-Control-Allow-Origin code added but nothing is happening
I am trying to solve the below option on my website
Strict-Transport-Security
Content-Security-Policy
X-Frame-Options
X-Content-Type-Options
Referrer-Policy
Permissions-Policy
I found the below ...
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0
answers
19
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how to set up proxy for ubuntu on ssh with private key file [duplicate]
i have an ec2 instance with ubuntu 22.04 and i connected with ssh using the password file but i need to set up the proxy in order to use sudo apt update, how can i set this up if my password is a ppk ...
0
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0
answers
29
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Giving loopback device another IP in EC2 user_data.sh?
On an AWS EC2 instance, I would like to configure my loopback device with another IP, e.g. 10.0.0.100/32. The configuration would need to happen in the user_data.sh script, so is there a simple ...
1
vote
1
answer
753
views
Connecting to IPSec IKEv2 VPN from CLI
I have set up an IPSec VPN on an AWS ec2 instance following this https://github.com/hwdsl2/setup-ipsec-vpn. The VPN works fine I am able to connect to it from my Phone and Laptops ( Android, Windows, ...
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356
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The connection has timed out error after installing apache2 in Ubuntu 22.04.2 LTS
I have installed apache2 in Ubuntu 22.04.2 LTS. When I hit my IP address in the browser to check the Apache page, I get the below error.
The connection has timed out
I have tried the below command
...
1
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2
answers
326
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getting permission denied when ssh to an instance from ubuntu 23.04 wsl
I recently updated in Ubuntu 23.04 wsl. I use the same certificate for both a very old 2017 aws linux instance and also for new aws linux instance. I am not able to ssh to the old 2017 aws linux ...
1
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1
answer
758
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Docker doesn't seem to be running. Did you start it?
I try to install DataHub together with Docker on a t2.large AWS EC2 Instance running Ubuntu.
I am following a installation guide for Docker and a guide for DataHub.
The tests proposed by the guides ...
0
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0
answers
818
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How do I restart a web server used by WordPress running on AWS EC2
I have inherited ownership of an AWS EC2 instance running WordPress.
I am unfamiliar with Unix.
I do not know how WordPress was installed.
I do not know how to check what web server is running.
...
0
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1
answer
165
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How I can restore/reset the /etc/fstab on amazon AWS EC-2 ubuntu 22.04?
In an amazon EC-2 instance I accidentally overwrote the /etc/fstab while I was adding a setting fro swapfile:
echo "/swapfile none swap sw 0 0" | sudo tee /etc/fstab
But I ...
0
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0
answers
25
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How APT finds a package from a repository? [duplicate]
I am currently using an AWS ec2 instance ubuntu 20.04.
When i am checking the /etc/apt/sources.list file, i can see the the repositories in the below format,
deb http://us-east-1.ec2.archive.ubuntu....
1
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0
answers
88
views
How can I pass the FQDN hostname to systemd?
I have an Ubuntu 20.04 system in AWS. The %H flag in systemd is replaced with the hostname as expected, but I need a way to capture the output of hostname --fqdn.
%H outputs ip-10-0-0-188 on my ...
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answers
62
views
create and configure SSL certificate not vaild certificate https red error
create SSL certificate and configure apache2 server in AWS EC2 instance
Create SSL using openssl
sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/my-domain.key -out /...
1
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0
answers
345
views
How relevant is Grub password protection in the cloud?
I see a recommendation from a vulnerability scanning tool running in AWS EC2, targeting an instance running Ubuntu 20.04:
GRUB bootloader is not password protected. An attacker can use the GRUB ...
1
vote
1
answer
245
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systemd service won't boot at start
I'm running a service on a EC2 instance that should boot at start and whenever the script associated fails.
So I wrote the service like this:
[Unit]
Description=Test
[Service]
User=ubuntu
Type=simple
...
1
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0
answers
108
views
Download from multiple backup apt repository in ubuntu
I have AWS auto scaling group which scales out in peak hours. I'm facing unhealthy instances due to do AWS's apt servers being unresponsive sometimes.
Err:68 http://ap-northeast-1.ec2.archive.ubuntu....
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2
answers
975
views
how to get the ip of my Ubuntu instance in AWS
How can I see the public IP address assigned to an EC2 instance, from within (i.e. after connecting) the EC2 instance? I can see the public IP address that is assigned to it, simply by looking in the ...
0
votes
1
answer
382
views
How to setup port to subdomain in AWS?
I have a domain (e.g. example.com) registered with godaddy.com and use AWS for hosting. Nameserver on Godaddy later added to AWS
I have an ubuntu (t2.medium) apache server installed. My project in ...
1
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0
answers
594
views
Unable to apt-get update on IPv6-only ubuntu server
Whenever I try to apt-get update on my IPv6-only ubuntu server, the command fails with connect (101: Network is unreachable) Cannot initiate the connection to us-east-2.ec2.archive.ubuntu.com:80 (52....
2
votes
1
answer
2k
views
SSH connection fails after upgrade from 20.04 to 22.04
A team member just upgraded our AWS EC2 instance from 20.04 LTS to 22.04 LTS, and ssh connections broke as a result. Now when I try to open a session (in MobaXterm) I get:
Server refused our key
No ...
0
votes
1
answer
494
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Ubuntu 22.04 AWS import initramfs/initrd issue
I'm working on a multi-cloud deployment for Ubuntu 22.04 and I haven't done this since 16.04, I've got a raw image created with QEMU, and I'm trying to get it into AWS, the import is telling me:
&...
0
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0
answers
163
views
How to configure a crontab to rsync via ssh on AWS using a pem file
I have two AWS EC2 server. One is production and the other is a replica.
This command works from the command line.
rsync -razv -e "ssh -i /home/ubuntu/migration/healthy.pem" /home/ubuntu/...
0
votes
2
answers
913
views
Proper way to shutdown an Ubuntu AWS EC2 instance?
Sometimes I need to shutdown an Ubuntu AWS EC2 instance so my company does not get changed for the time if I'm not going to use it for a few days. I'm not sure what is the proper or ideal way to do ...
0
votes
1
answer
332
views
Cannot SSH into AWS EC2 Instance, Blinking Cursor
I cannot ssh into an EC2 instance I have created in AWS console.
I just get blinking cursor when I typed this command:
ssh -i "ansible.pem" [email protected]....
1
vote
0
answers
549
views
Amazon Workspaces on ubuntu: copy / paste issue between multiple monitors
I am using Amazon workspaces on a Linux client: ubuntu.
The Amazon workspaces are Windows 10.
My issue is that I cannot copy / past anything across multiple monitors. I can copy and paste between the ...
0
votes
1
answer
236
views
Root Directory Keeps Changing Permissions (EC2), 403 NGINX Error
I am running a flask application using gunicorn/nginx. One of the issues I'm running into is that the permissions of my EC2 instance's root directory keeps changing permissions to drwxr-x--- which ...
0
votes
1
answer
439
views
How to shrink the volume of an ubuntu ec2 instance on aws
I have an issue trying to shrink a 5TB EBS volume that runs ubuntu on AWS to a 200GB EBS volume. I created the snapshot and use it to create a new volume. Create a new volume of the size I want to use....
5
votes
3
answers
9k
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For new AWS instance, "Using username "ubuntu". Server refused our key."
I have been using Amazon EC2 instances in AWS. I have been successful connecting with WinSCP to a variety of instances, including Amazon Linux, Rocky Linux, SUSE, and CentOS 6, 7, and 8. All of ...
1
vote
0
answers
111
views
How to connect EC2 instance to Netbeans remote server?
I am trying to connect my AWS ec2 ubuntu instance to the Netbeans.
While I am trying to connect with Netbeans Remote server then, It is showing the following error message. I have searched all the ...
0
votes
0
answers
2k
views
Permission Denied (publickey) when using SSH
I have Ubuntu 20.04 running in VirtualBox as my control node. I am using AWS EC2 instances (Ubuntu) for my remote servers.
Every time I try to ssh into one of my EC2 instances I get " Permission ...
0
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0
answers
374
views
RDP on EC2 works until logging out and back in RDP, SSH works without issue - must reboot to get RDP to work again
I have a Ubuntu 18.x that I have installed XRDP on and GNOME so I can configure Security Onion 2 for my org. This is a VM running in AWS on a EC2. I have whitelisted my public IP for SSH and RDP in ...
1
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2
answers
725
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AWS EC2 Ubuntu 20.04.4 LTS STARTUP taking too long because of cloud-init / url_helper.py issue
Everytime I restart my server I get this cloud-init related error that slows the startup by 5 minutes.
Where this error comes from and how can I fix this?
[ 5.458859] cloud-init[869]: Cloud-init v. ...
0
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1
answer
2k
views
Ubuntu 20.04 Terminal Using the Screen Command
I've been using the "screen" linux command on an AWS EC2 instance to keep code running 24/7. Recently I tried the command in my ubuntu terminal and found that if I make a screen, run a ...
0
votes
1
answer
2k
views
Help with adding secondary IPs to Netplan on Ubuntu 20.04 AWS EC2 instance
I have a Ubuntu 20.04 ec2 instance. I need to add three more persistent private IP addresses in addition to the primary. I'm familiar with the old way of doing this, but I have no experience with ...
2
votes
1
answer
151
views
Unable to change permissions inside AWS Docker ubuntu instance
I'm trying to run a discord bot in an AWS ubuntu docker container.
My Dockerfile looks like this:
FROM ubuntu
ADD hydrabot.exe /
ADD bot_config.json /
ADD client_secrets.json /
ADD Cyberbit.ttf /
ADD ...
1
vote
0
answers
952
views
Cloud-init doesn't run as first boot for instance launched from an AMI created from another instance
We configure AWS EC2 instances (Ubuntu 20.04) with cloud-init using user-data scripts. We're noticing the user-data scripts don't execute if they are run on instance which is launched from a custom ...
0
votes
0
answers
311
views
pointing sub domain to AWS EC2 server, website not displaying
The main domain is pointed on other AWS EC2 instance and due to the subdomain is a staging site so I launch another AWS EC2 instance, installed Apache, added the subdomain vhost to default .conf at /...