View vCloud Director VS Statistics

This section provides the info on how you can manage statistics of virtual servers imported from your vCloud Director.

You can set the vcloud_stats_batch_size parameter in the onapp.yml file. This parameter defines the number of VSs in a batch during statistics collection.

To have all vCloud Director statistics delivered to OnApp, you need to set the vCenter password(s):

  1. Go to your Control Panel's Settings menu and click the Compute resources icon.
  2. Click the label of the Compute resource you want to set vCenter password(s) for.
  3. On the screen that appears, click the Tools > vCenter passwords.
  4. On the page that loads, fill in the vCenter password and Save. If valid vCenter password is entered and connection is successful, you will see green dot in Connection status under vCenter password field. If connection fails, the dot is red.



Virtual Server CPU Usage Statistics



OnApp tracks CPU usage for virtual servers and generates charts that help analyze VS performance. The charts show the total CPU usage for all the cores of this particular VS for a specified time period.

The vertical axis shows the CPU usage percentage (CPU percentage is the core-independent quantity). The horizontal axis defines a time period.

To see CPU usage statistics:

  1. Go to your Control Panel's Virtual Servers menu.
  2. Click the label of the virtual server you're interested in.
  3. Click the Overview tab > CPU Usage.
  4. On the screen that appears, the top chart shows CPU usage for the last 24 hours. The bottom chart shows usage for the last three months (if there is enough data). If there less data available, the chart will show utilization for the time available.
  5. Tick the Show in My Timezone box to show bandwidth statistics according to your profile's timezone settings.
  6. To zoom into a time period, click and drag in a chart. Click the Show All button to zoom out again.

To see what percentage of compute resource's CPU resource a VS takes, go to your Control Panel's Virtual Servers menu and click the label of the VS you're interested in. On the screen that appears, the CPU(s)/Shares parameter displays the amount of CPU resource given to this VS.


Virtual Server Disk IOPS Statistics



The system tracks IOPS (Input/Output Operations per Second) for virtual servers and generates charts that help analyze VS disk performance. The data presented in the chart are for the periods during which the statistics was gathered, typically 3 minutes. To see IOPS for a virtual server:

  1. Go to your Control Panel's Virtual Servers menu.
  2. Click the label of the virtual server you're interested in.
  3. Click the Storage -> Disks tab.
  4. Click the Actions button next to the required disk, and then choose IOPS. 
  5. Click the Statistics (chart) icon next to the disk you're interested in. There are four charts on the screen that appears:
    • IOPS for the last hour
    • IOPS for the last 24 hours
    • Data written/read for the last 24 hours
    • Data written/read for the last hour
  6. To zoom into a time period, click and drag in a chart. Click the Show All button to zoom out again.

The OnApp API allows you to limit the Hourly IOPS and Hourly data by setting the limit=N parameter, where the N variable is the number of hours for which the charts will display the info.


Virtual Server Network Interface Statistics



OnApp tracks network usage for virtual servers and generates charts that help analyze network performance. To see network utilization statistics for a virtual server:

  1. Go to your Control Panel's Virtual Servers menu.
  2. Click the label of the virtual server you're interested in.
  3. Click the Networking -> Network Interfaces tab.
  4. Click the Statistics (chart) icon next to the network you're interested in.
  5. On the screen that appears, the top chart shows bandwidth usage for the last 24 hours. The bottom chart shows usage for the last three months.
  6. To zoom into a time period, click and drag in a chart. Click the Show all button to zoom out again.