HP CloudSystem Foundation Guide de l'utilisateur Page 114

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Interpreting the Dashboard data
Data refresh
Dashboard information for both the top and bottom graphs is refreshed every 15 seconds.
The graphs along the bottom of the Dashboard represent dynamically refreshed data presented
in two ways:
Just-in-time data: Every 15 seconds, the data point on the right side of the graph (labeled
now) is updated, representing the resources that have been successfully created or deleted
since the top of the current hour. For example, at 1:15pm, the now indicator shows the
resources created or deleted in the 15 minutes since 1:00pm.
Historical data: The remainder of the graph shows the hourly totals for the 23 hours prior to
the current hour. At the top of each hour, the oldest data point is dropped and the remaining
data points shift to the left. A new now indicator is started with a value of zero. This shift
provides a consistent view of historical activity.
Compute
Compute nodes host virtual machine instances, providing the CPU, memory and storage resources
that instances require. The Dashboard displays horizontal graphs that indicate the amount of
compute resources consumed by all instances across all compute nodes. A green graph indicates
that there are compute nodes available for instance consumption.
When a resource enters a critical state, then 90% or more of the resource has been consumed.
The horizontal usage graph color changes from green to red when a critical state is reached. You
should plan to add additional compute nodes when a usage graph enters a critical state.
Compute node storage differs from the other storage type shown on the Dashboard. Compute
node storage is the amount of space an instance consumes when it is created. Compute node
storage cannot be added from the Storage area of the CloudSystem Console. You must add
additional compute nodes to provide additional compute node storage.
The Compute graph on the bottom portion of the screen tracks the number of instances created or
deleted during a 24-hour period. These instances could be created in Foundation, Enterprise or
from REST APIs. The graph shows the total number of all instances created or deleted, regardless
of their point of origin. You can use this information to track activity and use the results to plan for
additional resource needs.
Network
The Dashboard displays information about the availability of provider and private network IP
addresses. Provider networks enable you to provision existing data center networks to the cloud.
Private networks enable groups of end-users to exclusively share virtual machine instances
provisioned inside the cloud using VLANs that you select for that purpose.
The Provider ports horizontal graph shows the amount of Provider Network IP addresses that are
assigned to instances. A port is defined as a specific IP address, created from the subnet allocation
pool on the Provider Network screen.
The Private network horizontal graph shows the number of Private network IP addresses that are
assigned to instances. Private network VLAN IDs and ranges are defined on the Private Network
screen of the CloudSystem Console. The OpenStack Networking service assigns VLANs from this
pool to Private Networks when they are created by end users using the CloudSystem Portal.
A green graph indicates that network IP addresses are available to attach to instances. When
network availability reaches a critical state (90% or more of the available network IP addresses
are consumed), then the graph changes to red. You should plan to add additional networks when
a usage graph enters a critical state. See Add Provider Network (page 74) and Add VLAN IDs
(page 76) (for Private Network assignments).
114 Monitor resource use and allocation in CloudSystem Console
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