This is a common thing. 'Hackers' will be using a list of azure IPs and will attempt brute force SSH to gain access to your server. As the log above shows, only failures were made. Your IP was most likely unassigned from another Azure VM.
Nearly every sever I've setup online has this issue. There are two actions I recommend you do.
Change your SSH port to ...
You have to understand the capabilities of the root user and sudo user. Root user has a user id of 0 and unlimited privileges. You can access any file, execute any system call, run any program if you're a root user. This is the reason a root user is call as superuser. Normally su command represents a superuser.
The sudo command(short for superuser do), ...
As per the Microsoft documentation, for Ubuntu you need :
sudo apt-get install krb5-user samba sssd sssd-tools libnss-sss libpam-sss ntp ntpdate realmd adcli
See Join an Ubuntu virtual machine in Azure to a managed domain
If you face difficulties troubleshooting SSH or application access to a Linux virtual machine (VM) in Azure, redeploying the VM may help. When you redeploy a VM, it moves the VM to a new node within the Azure infrastructure and then powers it back on. All your configuration options and associated resources are retained. This article shows you how to redeploy ...
Unfortunately, you cannot attach the VM-A system disk to VM-B even if the VM-A is in the stopped state.
If you want to attach the VM-A system disk to VM-B, you should delete the VM-A so that the disk is free and can attach to other VMs in the same region.
Was having the same error today, I resolved it using this command (to not try to directly add it to a specific folder, and then move it):
scp -r myFile.jar username@hostname:~/.
Hope this will help someone...
I download VHD from Azure VM(ubuntu 16.04.2 LTS), and run it on Hyper-v, I can use my original account to login it:
Could you please tell me which account are you use to login? By default, we can't use root to login it.
By the way, several mouths ago, I can't use original account to login this VM on Hyper-v. If your VM create in that time, we should use OS ...
Can I upload it directly to Azure and use it to spin up new instances? Any links or method will be highly welcome.
Of course you can. But you need to generalize the VM to remove the unique ID.
For detail information, please follow this article.
If you want to create a VM with this VHD instead of uploading it as a template, then, please follow the guide ...