Default Parameters for CorOSContImgTest

This test reports the total number of images that are available on the CRIO Container Engine. Using this test, administrators can figure out those images that are mapped to the containers and those that are not mapped to any containers. Likewise, administrators can also figure out the disk space utilization of the images that are mapped to the containers and the disk space utilization of the images that are not mapped to the containers. This way, administrators can figure out the images that are sparsely utilized, the images that are consuming too much of disk space etc and take remedial actions to restrict the disk space utilization of the images.

This page depicts the default parameters that need to be configured for the CorOSContImgTest.

• The TEST PERIOD list box helps the user to decide how often this test needs to be executed.

• By default, USE SUDO flag is set to No. This indicates that, by default, this test will report the metrics by executing the crictl command. However, in some highly secure environments, the eG agent installed user may not have the permissions to execute this command directly. In such cases, do the following:

  • Edit the SUDOERS file on the target host and append an entry of the following format to it:

    <eG_agent_install_user> ALL=(ALL) NOPASSWD:<Command>

    For instance, if the eG agent install user is eguser, then the entries in the sudoers file should be:

    eguser ALL=(ALL) NOPASSWD: crictl

  • Finally, save the file.

  • Then, when configuring the test using the eG admin interface, set this parameter to Yes. This will enable the eG agent to execute the sudo crictl command and retrieve the relevant metrics for this test.

• The DD FREQUENCY refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 1:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD FREQUENCY.

• Once the necessary values have been provided, clicking on the UPDATE button will register the changes made.

When changing default configurations of tests, the values with “$” indicate variables that will be replaced by the eG system according to the specific server being managed - for instance, $hostName is the host/nickname of the target host, $port is the port number of the server being monitored. E.g., for a server xyz:80, $hostName will be changed automatically by the eG manager to “xyz*” and $port will be changed to “80” when configuring a test.