VMs that have been created from Azure or Azure Stack using an Ubuntu template do not allow for single logon after restoring the VM from a Commvault backup.
Symptom
An Ubuntu VM logon fails after a restore from a Commvault backup.
Cause
The Linux guest agent for Ubuntu uses cloud-init for provisioning the VM after a restore operation. In this scenario, the cloud-init configuration locks the password of the default user.
Resolution
The workaround for this issue is to edit the VM's cloud configuration file (/etc/cloud/cloud.cfg), or reset the password with same user credentials from the Azure portal.
Edit the configuration file as follows: (The lock_passwd field is set to True by default.)
# System and/or distro specific settings
# (not accessible to handlers/transforms)
system_info: # This will affect which distro class gets used distro: ubuntu # Default user name + that default users groups (if added/used) default_user: name: ubuntu lock_passwd: False