Thank you all who use their time to help others. Thank you in advance.
I am taking a class on EDX for Linux command line. I have attached the instructions I have followed to set up Red hat using Windows 10. But the SSH for isn't working it says that RSA Key not found. (Attachment didn't work)
I paste it here
"The recommended way to access your Red Hat Enterprise Linux cloud instance for this course is
to use Secure Shell (ssh) to get an interactive shell on the system.
Step 1: Getting SSH
If you are using macOS or Linux: The OpenSSH command (ssh) should already be installed on
your computer. Start a terminal program to get a shell, and proceed to the next step.
If you are using Microsoft Windows, you will need to get an SSH client as follows:
● Option 1: Download Git for Windows from https://git-scm.com/download/win and install
it using the default settings. When it is installed, right-click on your desktop (not an icon
or a file) and select Git Bash Here to open a Git Bash command prompt. An SSH client is
provided with Git Bash and you can continue with Step 2.
● Option 2: If you have the PuTTY client, which can be downloaded from
http://www.chiark.greenend.org.uk/~sgtatham/putty/, and you are familiar with that
tool, you can use that to connect to your instance. AWS provides a tutorial on this at
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/putty.html.
Step 2: Connecting to your instance with SSH
From the Amazon EC2 console, in the left-side menu under INSTANCES, click Instances to
display a list of the instances you have running. This is probably just the one you set up for this
course. Select its checkbox and click Connect:"
Also, I have another PC I built running on Ubuntu. Can I use that PC with the RSA by logging into AWS account if there is no solution.
I have researched this question and I am stuck here trying to find a solution so I can start class.
Related
I launched an instance & downloaded my secret key. I've attempted this on 2 different devices and instances. Im trying to connect to the instance so I can upload files. Whenever I attempt to connect, this permission denied message displays.
Note I've downloaded and used openSSH
PS C:\WINDOWS\system32> ssh -i C:\Users*\Downloads*key.pem #ec2----.us-west-2.compute.amazonaws.com
The authenticity of host 'ec2----.us-west-2.compute.amazonaws.com (...)' can't be established.
ECDSA key fingerprint is SHA256:.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'ec2----.us-west-2.compute.amazonaws.com,...' (ECDSA) to the list of known hosts.
*#ec2----**.us-west-2.compute.amazonaws.com: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
PS C:\WINDOWS\system32>
P.S. This is my first post, so constructive criticism on etiquette is welcome :)
Recently started my first job (an internship really) in the IT field. 3 months ago working for a start-up. Im hoping to migrate eventually to something in the field of cloud security, OSINT, DevSecOps, Web Development. Passionate about information security, open source software.
I followed this tutorial from amazon on how to connect to my instance
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/openssh.html
Looks like it's an issue with .pem file permissions. Check this video & see if you can resolve the error.
You can use puttygen to get ppk file which is helpful to SSH from windows.
If you want to use .pem files, mobaxterm is good software to use
You are very welcome to the community, it's nice to know you started your first Job!
To get you started on how to connect to the AWS Linux instance there is a nice KB article Connect to your Linux instance from Windows using Windows Subsystem for Linux and another one using putty look at here & another SO thread.
There are a few thing you need to learn as Prerequisites:
Verify that the instance is ready
Verify the general prerequisites for connecting to your instance
Install the Windows Subsystem for Linux (WSL) and a Linux distribution on your local computer
Copy the private key from Windows to WSL
Then use :
ssh -i /path/key-pair-name.pem instance-user-name#instance-public-dns-name
OR
ssh -i /path/key-pair-name.pem instance-user-name#instance-IPv6-address
From using your Windows CMD:
PS C:\WINDOWS\system32> ssh -i C:\Users\<user_name>\Downloads\testkey.pem ec2-user#ec2----.us-west-2.compute.amazonaws.com
OR
PS C:\WINDOWS\system32> ssh -i C:\Users\<user_name>\Downloads\testkey.pem ec2-user#<Some_IP_Address>
Better Use mobaexterm and copy user key in there and you will there:
I have google cloud VM with Ubuntu installed along with various services and libraries. I need to make a similar bootable VM with the same OS and all the data, libraries etc in the already configured VM. How do I clone the VM with these requirements?
I tried to create an image from the already existing VM and could not SSH into it.
So I retraced my installations step by step trying to figure out which step is breaking the image.
I created an Ubuntu(18.04) VM and used that to create an image. The instance I created using the image did allow me to SSH into.
Next installed Ubuntu desktop and xorg server and created an image after that. Using that image, I created a new VM and tried to SSH into it.
But unfortunately, the SSH connection could not be established. So I think it is these installations that are causing the error if it is not some sort of system error.
Below are the exact commands I ran to install these after creating an Ubuntu(18.04) VM:
sudo passwd username
sudo su -
passwd
apt update && apt upgrade -y
adduser username root
adduser username admin
adduser username sudo
apt-get install ubuntu-desktop -y
apt-get install xserver-xorg-video-dummy
nano /etc/X11/xorg.conf
and pasted the following into the .conf file
Section "Device"
Identifier "Configured Video Device"
Driver "dummy"
EndSection
Section "Monitor"
Identifier "Configured Monitor"
HorizSync 31.5-48.5
VertRefresh 50-70
EndSection
Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1600x900"
EndSubSection
EndSection
After this state, I created the image using which I could not instantiate a VM that I could SSH into.
Since you have your VM ready and running; backup your image as per this GCP document. Follow the guidelines before you begin the process which were mentioned in the document like updating Google cloud CLI setting default region and zone and for general image guidelines.
Few networking features may require guest operating system mode. You can also check how to export a custom image to cloud storage.
You can also consider the Snapshot Approach.
Follow this process in order to create the image exactly as the one you have already set up and you know is working correctly. As you may already know, this is a custom image so they are available only to your Cloud project. You can create a custom image from boot disks and other images if you would like also. Then, use the custom image to create an instance.
I will also suggest you to give a look at this document which would give you a deeper knowledge on the task.
Regards,
Just spin up a new container from a disk snapshot, if you need an exact copy. And if you cannot SSH, you may either not have a SSH public key provisioned, no external IP assigned, or :22 closed.
gcloud ssh always works. One can as well provision project-wide SSH keys, which all VM in the project will inherit then. The documentation below: About VM metadata explains this all in detail.
My personal favorite are rather startup scripts, which describe the configuration, instead of copying it.
And it's not so difficult to get started with these: cat ~/.bash_history > rocky8_startup.sh. In a software-defined data-center, it might make sense to use software-defined configurations (one simply cannot alternate the installation per VM instance, when starting with a disk snapshot).
xserver-xorg-video-dummy is questionable, because one can enable display device -but unless recording the screen, this driver might still suffice; eg. for VNC sessions.
I am currently following the Coral Dev Board configuration guide using a MacOS machine running Catalina as my host machine. As per the instructions, for me to use the MDT command line tools on my specific host machine I must manually configure mdt. I used the following guide step-by-step but end up with the following error when I try to connect to the board.
Waiting for a device...
Connecting to jumbo-goose at 192.168.0.78
Key not present on jumbo-goose -- pushing
It looks like you're trying to connect to a device that isn't connected
to your workstation via USB and doesn't have the SSH key this MDT generated.
To connect with `mdt shell` you will need to first connect to your device
ONLY via USB.
Cowardly refusing to attempt to push a key to a public machine.
I would greatly appreciate if someone would be able to assist me in debugging this issue. I have reflashed my device a few times so I am unsure where the issue is emerging.
On the Coral Dev Mini I had similar issues with generating ssh keys, especially when I switched from a Windows to Linux machine. The easiest was (though not as secure) is to follow these steps and allows ssh with a password. First you will need to connect with a USB cable.
https://serverpilot.io/docs/how-to-enable-ssh-password-authentication/
To edit use sudo nano /etc/ssh/sshd_config
The key is to set: PasswordAuthentication yes
Check the sha25sum of the key file transferred to the dev board is the same as on MacOS, mine didn't match i.e the cut and paste wasn't quite right. With key file transferred manually using a SD card it worked first time on mdt devices/mdt shell commands.
I am stuck in a technical issue on a project and I think you the forum could help me out.
I have an EC2 Instance Type:p2.xlarge running on AWS, I cloned a repository in this instance which requires pytorch and cuda dependencies(this point has been taken care of).
Now, The issue is that I wanna work & run this code-base(which is is AWS instance now) somehow in my local pyCHARM IDE. In short, I didn't have proper resources on my laptop to run the repository, so I have to run in an AWS instance but for debugging purposes the local IDE would be a great option.
Is it possible to do that?. In other words, we can do SSH into AWS instance and run code, but all will be done through command line, if we could SSH through PYCHARM and can see the code in AWS here in local machine within PYCHARM and change, debug or run it as it was local but actually it gets executed in the instance.
Please suggest a solution to it.
Thanks in advance.
EDIT-1:
After following, #Cromulent suggestion, I have arrived here
Setting the remote:
Upload happening within the local & remote repo.
I still didn't understand the requirement of syncing the local and remote folders, when I only want to open the remote folder in my PYCHARM IDE and work on it.
I think after this setup, I have to change the code in local copy and the PYCHARM will sync the code in remote copy. How will I be running(using resources-GPUs of the remote Instance, not my local machine.) the remote code in PYCHARM in this scenario, I am just syncing it, for running again I have to ssh through command line and run the script(This does not serve the purpose)?
EDIT-2:
After #Cromulent suggestions.
Actually, it did work, but still, I am not able to run the remote code locally.
I am getting the below error while running any remote script. If I run the same script using ssh in the terminal, the scripts run normally. I tried to fix the problem using this post on StackOverflow, but it didn't work too.
ssh://ubuntu#ec2-52-41-247-169.us-west-2.compute.amazonaws.com:22/home/ubuntu/anaconda3/bin/python -u <08ad9807-3477-4916-96ce-ba6155e3ff4c>/home/ubuntu/InsightProject/scripts/download_flownet2.py
/home/ubuntu/anaconda3/bin/python: can't open file '<08ad9807-3477-4916-96ce-ba6155e3ff4c>/home/ubuntu/InsightProject/scripts/download_flownet2.py': [Errno 2] No such file or directory
The below is the screenshot for the above problem:
PyCharm Professional supports remote Python interpreters (either the globally installed Python interpreter or a virtualenv). It works by creating an SSH connection to the server and then running the code on the remote host. The results are then displayed locally in PyCharm Professional. You can also do remote debugging as well.
You MUST be using the professional version of PyCharm though. The free community version does not support this feature.
You can find the documentation here:
https://www.jetbrains.com/help/pycharm/configuring-remote-interpreters-via-ssh.html
One more solution is to deploy a Jupyter Notebook on your remote server. Then you will be able to use it from PyCharm Professional Edition.
Don't forget to make rules for the jupyter ports (e.g. allow all 8888) in your AWS console and in your instance.
To configure a remote interpreter for your notebook do this (source):
Open the Jupyter Notebook page of the Settings/Preferences dialog.
On this page, select or clear the Markdown cells rendering enabled option, and specify the username and password. Note that for the
single-user notebooks these fields are optional - leave them blank.
Fill in the username (for JupyterHub) and password.
Click the link Configure remote interpreter. You'll find yourself at the Project Interpreter page.
Configure the remote interpreter, as described in the section Configuring Python Interpreter.
You will want to configure a remote interpreter.
I tried the above approach but it didn't work for me. I have edited my post so that I can get additional input from the community, but I didn't any after the first answer was posted.
My friend actually figured out a secondary way to fix the issue. He actually uses "NOMACHINE" on the local machine and open connection to the remote desktop. Then you can directly install PYCHARM in the remote machine and work in there. I hope this will help others.
The solution is in his blog post. (Thanks to Shaobo Guan)
Another solution would be to use VNC instead of NoMachine
I am working on my graduation project and It's my first time dealing with spark and EC2
so I am following the steps in this blog
http://www.supergloo.com/fieldnotes/apache-spark-cluster-amazon-ec2-tutorial/#comment-3843
The problem is he is working on MAC and I don't know how to make these commands work on Windows (CMD).
for example this command
ec2/spark-ec2 –key-pair=courseexample –identity-file=courseexample.pem launch spark-cluster-example
Any Help ?!
try running it in the following way (from the same folder):
python -Wdefault "ec2\spark_ec2.py" –key-pair=courseexample –identity-file=courseexample.pem launch spark-cluster-example
if you don't know how to open console in windows - just press "Start->Run", type cmd and hit enter, then you would need to havigate to your Spark home folder, and execute the above command.
NOTE: I don't currently own a Windows machine, so I haven't tried this command myslef.