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Taikun OCP Guide

Table of Contents

Injecting the administrator password

Compute can generate a random administrator (root) password and
inject that password into an instance. If this feature is enabled, users
can run ssh to an
instance without an ssh keypair. The random password appears in the
output of the openstack server create command. You can also view
and set the admin password from the dashboard.

Password injection using the dashboard

For password injection display in the dashboard, please refer to the
setting of can_set_password in Horizon doc

Password injection on libvirt-based hypervisors

For hypervisors that use the libvirt back end (such as KVM, QEMU, and
LXC), admin password injection is disabled by default. To enable it, set
this option in /etc/nova/nova.conf:


When enabled, Compute will modify the password of the admin account
by editing the /etc/shadow file inside the virtual machine


Linux distribution guest only.


Users can only use ssh to access the instance by using the admin
password if the virtual machine image is a Linux distribution, and it
has been configured to allow users to use ssh as the root user with password authorization.
This is not the case for Ubuntu
cloud images
which, by default, does not allow users to use ssh to access the root
account, or CentOS cloud
which, by default, does not allow ssh access to the
instance with password.

Password injection and Windows images (all

For Windows virtual machines, configure the Windows image to retrieve
the admin password on boot by installing an agent such as cloudbase-init.