diff --git a/doc/training-guides/common/section_vm-provisioning-walk-through.xml b/doc/training-guides/common/section_vm-provisioning-walk-through.xml index a08623ab..74ed1609 100644 --- a/doc/training-guides/common/section_vm-provisioning-walk-through.xml +++ b/doc/training-guides/common/section_vm-provisioning-walk-through.xml @@ -137,20 +137,20 @@ OpenStack. Instances are the individual virtual machines running on physical compute nodes. The OpenStack Compute service manages - instances. Any number of instances maybe started from the same + instances. Any number of instances may be started from the same image. Each instance is run from a copy of the base image so runtime changes made by an instance do not change the image it is based on. Snapshots of running instances may be taken which create a new image based on the current disk state of a particular instance. - When starting an instance a set of virtual resources known + When starting an instance, a set of virtual resources known as a flavor must be selected. Flavors define how many virtual CPUs an instance has and the amount of RAM and size of its ephemeral disks. OpenStack provides a number of predefined flavors which cloud administrators may edit or add to. Users must select from the set of available flavors defined on their cloud. - Additional resources such as persistent volume storage and + Additional resources such as persistent volume storage and a public IP address may be added to and removed from running instances. The examples below show the cinder-volume service which provide persistent block storage as opposed to the @@ -217,10 +217,10 @@ storage rather than local disk. The details are left for later chapters. End State - Once the instance has served its purpose and is deleted + Once the instance has served its purpose and is deleted, all state is reclaimed, except the persistent volume. The ephemeral storage is purged. Memory and vCPU resources are - released. And of course the image has remained unchanged + released. The image remains unchanged throughout. Figure 2.3. End state of image and volume after instance exits @@ -236,6 +236,6 @@ going on in the background. To understand what's happening behind the dashboard, lets take a deeper dive into OpenStack's VM provisioning. For launching a VM, you can either use - the command-line interfaces or the OpenStack dashboard. + the command-line interface or the OpenStack dashboard.