Root login Ubuntu VM on Azure

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Installed Ubuntu Server LTS 14.04 from Azure library on Azure VM. Logged in as standard "azureuser" created by Azure with my password. Changed root password:

sudo passwd root

If I try to login as "root":

Access denied

What do I miss? And yes, the password is correct.


by default, Ubuntu disables the root account. Since root is godmode, disabling it means that all of the hackers with automated scripts that try to break the root account are wasting their time.

I highly recommend against this. (There are many reasons, here are some: https://askubuntu.com/questions/16178/why-is-it-bad-to-login-as-root) However, the steps to do so are Over on askubuntu.com

According to that page, to unlock the root account you must execute sudo passwd -u root. To relock the root account, use sudo passwd -l root

To reiterate: this is kinda a bad idea. A better solution would be to create a new user that has unlimited permissions ONLY WITHIN THE SCOPE OF WHAT YOU REQUIRE. Root is godmode; if you screw something up too bad for you. An elevated user for your scope, on the other hand, would only be able to destroy what it has access to...not your entire system.

Access denied: Root login Ubuntu VM on Azure, Installed Ubuntu Server LTS 14.04 from Azure library on Azure VM. Logged in as standard "azureuser" I miss? And yes, the password is  Two RBAC roles are used to authorize VM login: Virtual Machine Administrator Login: Users with this role assigned can log in to an Azure virtual machine with Windows Administrator or Linux root user privileges. Virtual Machine User Login: Users with this role assigned can log in to an Azure virtual machine with regular user privileges.


Just run sudo -s, you will get the root terminal.

Become root user on Linux servers in Azure – mohitgoyal.co, root is the user name or account that by default has access to all First, you need to login to Azure VM with the account that has admin  Once VM is created, you cannot login to the VM as root, as you don’t know its password. However, there is quick workaround on this. First, you need to login to Azure VM with the account that has admin privileges. Then you can simply use sudo -i to login as root user. It will only ask for password of current user.


To enter into a Azure VM using SSH...

First, You need to enable the root account:

#sudo passwd root

Then you need to enable the root login for ssh editing the file /etc/ssh/sshd_config (the default value in Azure VMs is PermitRootLogin without-password, so you need to change/comment it):

...
#PermitRootLogin without-password
PermitRootLogin yes
...

Finally, you need to reload/restart the ssh service:

#sudo service ssh reload

Reset access to an Azure Linux VM, Introduce the steps to reset the local Linux password on Azure VM. to create a new local admin account and re-gain access to the VM. Run the following SSH command on the troubleshooting VM to become a super-user. I just raised ubuntu on an azure vm and try to run some commands from the same console that includes the azure page panel, for example: sudo apt-get update but I get the following error: bash:


It's easier just to do sudo <command>. Then you don't have the full terminal for the super user. This will just execute the command with root privileges. See this article.

How to reset local Linux password on Azure VMs, How to enable root access on Azure Linux Virtual Machine. August 12, 2016 / Eason. Login via ssh; Enter sudo su –; Check the current root access is configured  How to enable root access on Azure Linux Virtual Machine Login via ssh. Enter sudo su –. Check the current root access is configured or not by command grep root /etc/shadow (LOCK means root access is disabled (default)). Enable root access by command passwd and your should define to root password


It's an old post but it happens sometimes. Here is what I solved after research.

sample log

$ azure vm extension set hm hm  CustomScript Microsoft.Azure.Extensions 2.0 --auto-upgrade-minor-version  -i '{"commandToExecute": "cp /tmp/sudoers.org /etc/sudoers"}' info:    Executing command vm extension set
+ Looking up the VM "hm"
+ Installing extension "CustomScript", VM: "hm" info:    vm extension set command OK

For macOS user, here is simple steps. (at least you need node installed)

npm install -g azure-cli
azure login
azure config mode arm  

or asm, depends on your VM

azure vm list    

change mode if no VM listed

copy sudoers file from other machine to /tmp/sudoers.default of you target machine

backup sudoers

azure vm extension set hm hm  CustomScript Microsoft.Azure.Extensions 2.0 --auto-upgrade-minor-version  -i '{"commandToExecute": "cp /etc/sudoers /tmp"}'

copy default sudoers to /etc/sudoers

azure vm extension set hm hm  CustomScript Microsoft.Azure.Extensions 2.0 --auto-upgrade-minor-version  -i '{"commandToExecute": "cp /tmp/sudoers.default /etc/sudoers"}'

How to enable root access on Azure Linux Virtual Machine, I don't know much about Azure but I'd assume you can change the password with administrator access. In linux: sudo passwd root. In windows: (in administrator  Go back to the root and unmount the disk. cd / umount /tempmount In Azure portal, detach the disk from the troubleshooting VM. Change the OS disk for the affected VM. Next steps. Troubleshoot Azure VM by attaching OS disk to another Azure VM. Azure CLI: How to delete and re-deploy a VM from VHD. Related Articles


How to reset root password on a Linux VM on Windows Azure , The Cloud Shell UI in the portal is not your VM, this is an admin tool, running in a container that allows you to execute things like Azure CLI in  by default, Ubuntu disables the root account. Since root is godmode, disabling it means that all of the hackers with automated scripts that try to break the root account are wasting their time. I highly recommend against this. According to that page, to unlock the root account you must execute sudo passwd -u root.


no root access on ubuntu vm azure, I create an azure ubuntu 1804 vm with no root user and ssh public key. Then I try to use the script of how to enable root ssh public key login with  These JSON files can also be called from Azure templates. Reset user access. If you have lost access to root on your Linux VM, you can launch a VMAccess script to update a user's SSH key or password. To update the SSH public key of a user, create a file named update_ssh_key.json and add settings in the following format.


“Please login as the user ”xx“ rather than the user ”root" on azure, looking to generate SSH keys and use them to login to an Azure Linux VM then good on that's the recommended and most secure method to access your VMs. ssh <vm username>@<vm ip address>Example command from Ubuntu terminal. Login with the password you created in the Azure portal and you’re in. Your local terminal now acts as the terminal of your VM. You may be warned that the machine is untrusted and you’ll need to type “yes” to add it to list of known hosts.